Documentation of 'org.apache.derby.impl.sql.catalog.DataDictionaryImpl' Java class
DataDictionaryImpl
org.apache.derby.impl.sql.catalog

Class DataDictionaryImpl

    • Constructor Detail

      • DataDictionaryImpl

        public DataDictionaryImpl()
    • Method Detail

      • canSupport

        public boolean canSupport(java.util.Properties startParams)
        This is the data dictionary implementation for the standard database engine.
        Specified by:
        canSupport in interface ModuleSupportable
        Returns:
        true if this service requested is for a database engine.
      • boot

        public void boot(boolean create,
                         java.util.Properties startParams)
                  throws StandardException
        Start-up method for this instance of the data dictionary.
        Specified by:
        boot in interface ModuleControl
        Parameters:
        startParams - The start-up parameters
        Throws:
        StandardException - Thrown if the module fails to start
        See Also:
        Monitor, ModuleFactory
      • startWriting

        public void startWriting(LanguageConnectionContext lcc)
                          throws StandardException
        Description copied from interface: DataDictionary
        Inform this DataDictionary that we are about to start writing to it. This means using the various add and drop methods in the DataDictionary. Generally, this is done during execution of DDL.
        Specified by:
        startWriting in interface DataDictionary
        Parameters:
        lcc - The LanguageConnectionContext to use.
        Throws:
        StandardException - Thrown on error
      • getAuthorizationDatabaseOwner

        public java.lang.String getAuthorizationDatabaseOwner()
        Get authorizationID of Database Owner
        Specified by:
        getAuthorizationDatabaseOwner in interface DataDictionary
        Returns:
        authorizationID
      • getCollationTypeOfUserSchemas

        public int getCollationTypeOfUserSchemas()
        Description copied from interface: DataDictionary
        Return the collation type for user schemas. In Derby 10.3, this is either UCS_BASIC or TERRITORY_BASED. The exact value is decided by what has user asked for through JDBC url optional attribute COLLATION. If that atrribute is set to UCS_BASIC, the collation type for user schemas will be UCS_BASIC. If that attribute is set to TERRITORY_BASED, the collation type for user schemas will be TERRITORY_BASED. If the user has not provided COLLATION attribute value in the JDBC url at database create time, then collation type of user schemas will default to UCS_BASIC. Pre-10.3 databases after upgrade to Derby 10.3 will also use UCS_BASIC for collation type of user schemas.
        Specified by:
        getCollationTypeOfUserSchemas in interface DataDictionary
        Returns:
        the collation type for user schemas
        See Also:
        DataDictionary.getCollationTypeOfUserSchemas()
      • getSystemSchemaDescriptor

        public SchemaDescriptor getSystemSchemaDescriptor()
                                                   throws StandardException
        Get the descriptor for the system schema. Schema descriptors include authorization ids and schema ids. SQL92 allows a schema to specify a default character set - we will not support this.
        Specified by:
        getSystemSchemaDescriptor in interface DataDictionary
        Returns:
        The descriptor for the schema.
        Throws:
        StandardException - Thrown on failure
      • getSystemUtilSchemaDescriptor

        public SchemaDescriptor getSystemUtilSchemaDescriptor()
                                                       throws StandardException
        Get the descriptor for the SYSCS_UTIL system schema. Schema descriptors include authorization ids and schema ids. SQL92 allows a schema to specify a default character set - we will not support this.
        Returns:
        The descriptor for the schema.
        Throws:
        StandardException - Thrown on failure
      • getSysIBMSchemaDescriptor

        public SchemaDescriptor getSysIBMSchemaDescriptor()
                                                   throws StandardException
        Get the descriptor for the SYSIBM schema. Schema descriptors include authorization ids and schema ids. SQL92 allows a schema to specify a default character set - we will not support this.
        Specified by:
        getSysIBMSchemaDescriptor in interface DataDictionary
        Returns:
        The descriptor for the schema.
        Throws:
        StandardException - Thrown on failure
      • getSchemaDescriptor

        public SchemaDescriptor getSchemaDescriptor(java.lang.String schemaName,
                                                    TransactionController tc,
                                                    boolean raiseError)
                                             throws StandardException
        Get the descriptor for the named schema. Schema descriptors include authorization ids and schema ids. SQL92 allows a schema to specify a default character set - we will not support this. Will check default schema for a match before scanning a system table.
        Specified by:
        getSchemaDescriptor in interface DataDictionary
        Parameters:
        schemaName - The name of the schema we're interested in. Must not be null.
        tc - TransactionController
        raiseError - whether an exception should be thrown if the schema does not exist.
        Returns:
        The descriptor for the schema. Can be null (not found) if raiseError is false.
        Throws:
        StandardException - Thrown on error
      • getSchemaDescriptor

        public SchemaDescriptor getSchemaDescriptor(UUID schemaId,
                                                    int isolationLevel,
                                                    TransactionController tc)
                                             throws StandardException
        Get the SchemaDescriptor for the given schema identifier.
        Specified by:
        getSchemaDescriptor in interface DataDictionary
        Parameters:
        schemaId - the uuid of the schema we want a descriptor for
        isolationLevel - use this explicit isolation level. Only ISOLATION_REPEATABLE_READ (normal usage) or ISOLATION_READ_UNCOMMITTED (corner cases) supported for now.
        tc - transaction controller
        Returns:
        The descriptor for the schema, null if no such schema exists.
        Throws:
        StandardException - thrown on error
      • existsSchemaOwnedBy

        public boolean existsSchemaOwnedBy(java.lang.String authid,
                                           TransactionController tc)
                                    throws StandardException
        Return true of there exists a schema whose authorizationId equals authid, i.e. SYS.SYSSCHEMAS contains a row whose column (AUTHORIZATIONID) equals authid.
        Specified by:
        existsSchemaOwnedBy in interface DataDictionary
        Parameters:
        authid - authorizationId
        tc - TransactionController
        Returns:
        true iff there is a matching schema
        Throws:
        StandardException
      • getTableDescriptor

        public TableDescriptor getTableDescriptor(java.lang.String tableName,
                                                  SchemaDescriptor schema,
                                                  TransactionController tc)
                                           throws StandardException
        Get the descriptor for the named table within the given schema. If the schema parameter is NULL, it looks for the table in the current (default) schema. Table descriptors include object ids, object types (table, view, etc.)
        Specified by:
        getTableDescriptor in interface DataDictionary
        Parameters:
        tableName - The name of the table to get the descriptor for
        schema - The descriptor for the schema the table lives in. If null, use the system schema.
        tc - Transaction context.
        Returns:
        The descriptor for the table, null if table does not exist.
        Throws:
        StandardException - Thrown on failure
      • getTableDescriptor

        public TableDescriptor getTableDescriptor(UUID tableID)
                                           throws StandardException
        Get the descriptor for the table with the given UUID. NOTE: I'm assuming that the object store will define an UUID for persistent objects. I'm also assuming that UUIDs are unique across schemas, and that the object store will be able to do efficient lookups across schemas (i.e. that no schema descriptor parameter is needed).
        Specified by:
        getTableDescriptor in interface DataDictionary
        Parameters:
        tableID - The UUID of the table to get the descriptor for
        Returns:
        The descriptor for the table, null if the table does not exist.
        Throws:
        StandardException - Thrown on failure
      • isSchemaEmpty

        public boolean isSchemaEmpty(SchemaDescriptor sd)
                              throws StandardException
        Indicate whether there is anything in the particular schema. Checks for tables in the the schema, on the assumption that there cannot be any other objects in a schema w/o a table.
        Specified by:
        isSchemaEmpty in interface DataDictionary
        Parameters:
        sd - descriptor
        Returns:
        true/false
        Throws:
        StandardException - on error
      • dropColumnDescriptor

        public void dropColumnDescriptor(UUID tableID,
                                         java.lang.String columnName,
                                         TransactionController tc)
                                  throws StandardException
        Given a column name and a table ID, drops the column descriptor from the table.
        Specified by:
        dropColumnDescriptor in interface DataDictionary
        Parameters:
        tableID - The UUID of the table to drop the column from
        columnName - The name of the column to drop
        tc - TransactionController for the transaction
        Throws:
        StandardException - Thrown on error
      • updateSYSCOLPERMSforAddColumnToUserTable

        public void updateSYSCOLPERMSforAddColumnToUserTable(UUID tableID,
                                                             TransactionController tc)
                                                      throws StandardException
        Need to update SYSCOLPERMS for a given table because a new column has been added to that table. SYSCOLPERMS has a column called "COLUMNS" which is a bit map for all the columns in a given user table. Since ALTER TABLE .. ADD COLUMN .. has added one more column, we need to expand "COLUMNS" for that new column Currently, this code gets called during execution phase of ALTER TABLE .. ADD COLUMN ..
        Specified by:
        updateSYSCOLPERMSforAddColumnToUserTable in interface DataDictionary
        Parameters:
        tableID - The UUID of the table to which a column has been added
        tc - TransactionController for the transaction
        Throws:
        StandardException - Thrown on error
      • updateSYSCOLPERMSforDropColumn

        public void updateSYSCOLPERMSforDropColumn(UUID tableID,
                                                   TransactionController tc,
                                                   ColumnDescriptor columnDescriptor)
                                            throws StandardException
        Update SYSCOLPERMS due to dropping a column from a table. Since ALTER TABLE .. DROP COLUMN .. has removed a column from the table, we need to shrink COLUMNS by removing the corresponding bit position, and shifting all the subsequent bits "left" one position.
        Specified by:
        updateSYSCOLPERMSforDropColumn in interface DataDictionary
        Parameters:
        tableID - The UUID of the table from which a col has been dropped
        tc - TransactionController for the transaction
        columnDescriptor - Information about the dropped column
        Throws:
        StandardException - Thrown on error
      • getSPSDescriptor

        public SPSDescriptor getSPSDescriptor(java.lang.String stmtName,
                                              SchemaDescriptor sd)
                                       throws StandardException
        Get a SPSDescriptor given its name. Currently no cacheing. With caching we need to be very careful about invalidation. No caching means invalidations block on existing SPSD instances (since they were read in
        Specified by:
        getSPSDescriptor in interface DataDictionary
        Parameters:
        stmtName - the statement name
        sd - The SchemaDescriptor
        Returns:
        The SPSDescriptor for the constraint.
        Throws:
        StandardException - Thrown on failure
      • getAllSPSDescriptors

        public java.util.List<SPSDescriptor> getAllSPSDescriptors()
                                                           throws StandardException
        Get every statement in this database. Return the SPSDescriptors in an list. The returned descriptors don't contain the compiled statement, so it it safe to call this method during upgrade when it isn't known if the saved statement can still be deserialized with the new version.
        Specified by:
        getAllSPSDescriptors in interface DataDictionary
        Returns:
        the list of descriptors
        Throws:
        StandardException - Thrown on failure
      • getTriggerActionString

        public java.lang.String getTriggerActionString(Visitable actionStmt,
                                                       java.lang.String oldReferencingName,
                                                       java.lang.String newReferencingName,
                                                       java.lang.String triggerDefinition,
                                                       int[] referencedCols,
                                                       int[] referencedColsInTriggerAction,
                                                       int actionOffset,
                                                       TableDescriptor triggerTableDescriptor,
                                                       int triggerEventMask,
                                                       boolean createTriggerTime,
                                                       java.util.List<int[]> replacements)
                                                throws StandardException
        Get the trigger action string associated with the trigger after the references to old/new transition tables/variables in trigger action sql provided by CREATE TRIGGER have been transformed eg DELETE FROM t WHERE c = old.c turns into DELETE FROM t WHERE c = org.apache.derby.iapi.db.Factory:: getTriggerExecutionContext().getOldRow(). getInt(columnNumberFor'C'inRuntimeResultset) or DELETE FROM t WHERE c in (SELECT c FROM OLD) turns into DELETE FROM t WHERE c in (SELECT c FROM new TriggerOldTransitionTable OLD)
        Specified by:
        getTriggerActionString in interface DataDictionary
        Parameters:
        actionStmt - This is needed to get access to the various nodes generated by the Parser for the trigger action sql. These nodes will be used to find REFERENCEs column nodes.
        oldReferencingName - The name specified by the user for REFERENCEs to old row columns
        newReferencingName - The name specified by the user for REFERENCEs to new row columns
        triggerDefinition - The original trigger action text provided by the user during CREATE TRIGGER time.
        referencedCols - Trigger is defined on these columns (will be null in case of INSERT AND DELETE Triggers. Can also be null for DELETE Triggers if UPDATE trigger is not defined on specific column(s))
        referencedColsInTriggerAction - what columns does the trigger action reference through old/new transition variables (may be null)
        actionOffset - offset of start of action clause
        triggerTableDescriptor - Table descriptor for trigger table
        triggerEventMask - TriggerDescriptor.TRIGGER_EVENT_XXX
        createTriggerTime - True if here for CREATE TRIGGER, false if here because an invalidated row level trigger with REFERENCEd columns has been fired and hence trigger action sql associated with SPSDescriptor may be invalid too.
        replacements - a list that will be populated with objects that describe how triggerDefinition has been transformed into the returned SQL text. Each element in the list will contain four integers. The first two describe the begin and end offset of the replaced text in the triggerDefinition. The last two describe the begin and end offset of the replacement text in the returned string. The begin offsets are inclusive, whereas the end offsets are exclusive. The list can be null if the caller does not care about this information.
        Returns:
        Transformed trigger action sql
        Throws:
        StandardException
      • updateTriggerDescriptor

        public void updateTriggerDescriptor(TriggerDescriptor triggerd,
                                            UUID formerUUID,
                                            int[] colsToSet,
                                            TransactionController tc)
                                     throws StandardException
        Update the trigger descriptor in question. Updates every row in the base conglomerate that matches the uuid.
        Specified by:
        updateTriggerDescriptor in interface DataDictionary
        Parameters:
        triggerd - The Trigger descriptor
        formerUUID - The UUID for this column in SYSTRIGGERS, may differ from what is in triggerd if this is the column that is being set.
        colsToSet - Array of ints of columns to be modified, 1 based. May be null (all cols).
        tc - The TransactionController to use
        Throws:
        StandardException - Thrown on failure
      • getConstraintDescriptor

        public ConstraintDescriptor getConstraintDescriptor(java.lang.String constraintName,
                                                            UUID schemaID)
                                                     throws StandardException
        Get a ConstraintDescriptor given its name and schema ID. Please use getConstraintDescriptorByName() if you have the constraint's table descriptor, it is much faster.
        Specified by:
        getConstraintDescriptor in interface DataDictionary
        Parameters:
        constraintName - Constraint name.
        schemaID - The schema UUID
        Returns:
        The ConstraintDescriptor for the constraint.
        Throws:
        StandardException - Thrown on failure
      • getStatisticsDescriptors

        public java.util.List<StatisticsDescriptor> getStatisticsDescriptors(TableDescriptor td)
                                                                      throws StandardException
        Returns all the statistics descriptors for the given table.

        NOTE: As opposed to most other data dictionary lookups, this operation is performed with isolation level READ_UNCOMMITTED. The reason is to avoid deadlocks with inserts into the statistics system table.

        Specified by:
        getStatisticsDescriptors in interface DataDictionary
        Parameters:
        td - TableDescriptor for which I need statistics
        Returns:
        A list of tuple descriptors, possibly empty.
        Throws:
        StandardException
      • getConstraintDescriptors

        public ConstraintDescriptorList getConstraintDescriptors(TableDescriptor td)
                                                          throws StandardException
        Load up the constraint descriptor list for this table descriptor and return it. If the descriptor list is already loaded up, it is retuned without further ado. If no table descriptor is passed in, then all constraint descriptors are retrieved. Note that in this case, the constraint descriptor objects may be duplicates of constraint descriptors that are hung off of the table descriptor cache.
        Specified by:
        getConstraintDescriptors in interface DataDictionary
        Parameters:
        td - The table descriptor. If null, all constraint descriptors are returned.
        Returns:
        The ConstraintDescriptorList for the table
        Throws:
        StandardException - Thrown on failure
      • getActiveConstraintDescriptors

        public ConstraintDescriptorList getActiveConstraintDescriptors(ConstraintDescriptorList cdl)
                                                                throws StandardException
        Convert a constraint descriptor list into a list of active constraints, that is, constraints which must be enforced. For the Core product, these are just the constraints on the original list. However, during REFRESH we may have deferred some constraints until statement end. This method returns the corresponding list of constraints which AREN'T deferred.
        Specified by:
        getActiveConstraintDescriptors in interface DataDictionary
        Parameters:
        cdl - The constraint descriptor list to wrap with an Active constraint descriptor list.
        Returns:
        The corresponding Active ConstraintDescriptorList
        Throws:
        StandardException - Thrown on failure
      • activeConstraint

        public boolean activeConstraint(ConstraintDescriptor constraint)
                                 throws StandardException
        Reports whether an individual constraint must be enforced. For the Core product, this routine always returns true. However, during REFRESH we may have deferred some constraints until statement end. This method returns false if the constraint deferred
        Specified by:
        activeConstraint in interface DataDictionary
        Parameters:
        constraint - the constraint to check
        Returns:
        The corresponding Active ConstraintDescriptorList
        Throws:
        StandardException - Thrown on failure
      • getConstraintTableDescriptor

        public TableDescriptor getConstraintTableDescriptor(UUID constraintId)
                                                     throws StandardException
        Return a table descriptor corresponding to the TABLEID field in SYSCONSTRAINTS where CONSTRAINTID matches the constraintId passsed in.
        Specified by:
        getConstraintTableDescriptor in interface DataDictionary
        Parameters:
        constraintId - The id of the constraint
        Returns:
        the corresponding table descriptor
        Throws:
        StandardException - Thrown on error
      • getForeignKeys

        public ConstraintDescriptorList getForeignKeys(UUID constraintId)
                                                throws StandardException
        Return a list of foreign keys constraints referencing this constraint. Returns both enforced and not enforced foreign keys.
        Specified by:
        getForeignKeys in interface DataDictionary
        Parameters:
        constraintId - The id of the referenced constraint
        Returns:
        list of constraints, empty of there are none
        Throws:
        StandardException - Thrown on error
      • getConstraints

        public java.util.List<UUID> getConstraints(UUID uuid,
                                                   int indexId,
                                                   int columnNum)
                                            throws StandardException
        Return an List which of the relevant column matching the indexed criteria. If nothing matches, returns an empty List (never returns null).
        Parameters:
        uuid - The id of the constraint
        indexId - The index id in SYS.SYSCONSTRAINTS
        columnNum - The column to retrieve
        Returns:
        a list of UUIDs in an List.
        Throws:
        StandardException - Thrown on error
      • updateConstraintDescriptor

        public void updateConstraintDescriptor(ConstraintDescriptor cd,
                                               UUID formerUUID,
                                               int[] colsToSet,
                                               TransactionController tc)
                                        throws StandardException
        Update the constraint descriptor in question. Updates every row in the base conglomerate.
        Specified by:
        updateConstraintDescriptor in interface DataDictionary
        Parameters:
        cd - The Constraint descriptor
        formerUUID - The UUID for this column in SYSCONSTRAINTS, may differ from what is in cd if this is the column that is being set.
        colsToSet - Array of integers of columns to be modified, 1 based. May be null (all columns).
        tc - The TransactionController to use
        Throws:
        StandardException - Thrown on failure
      • getSubKeyConstraint

        public SubKeyConstraintDescriptor getSubKeyConstraint(UUID constraintId,
                                                              int type)
                                                       throws StandardException
        Get a SubKeyConstraintDescriptor from syskeys or sysforeignkeys for the specified constraint id. For primary foreign and and unique key constraints.
        Specified by:
        getSubKeyConstraint in interface DataDictionary
        Parameters:
        constraintId - The UUID for the constraint.
        type - The type of the constraint (e.g. DataDictionary.FOREIGNKEY_CONSTRAINT)
        Returns:
        SubKeyConstraintDescriptor The Sub descriptor for the constraint.
        Throws:
        StandardException - Thrown on failure
      • hashAllConglomerateDescriptorsByNumber

        public java.util.Hashtable<java.lang.Long,ConglomerateDescriptor> hashAllConglomerateDescriptorsByNumber(TransactionController tc)
                                                                                                          throws StandardException
        Get all of the ConglomerateDescriptors in the database and hash them by conglomerate number. This is useful as a performance optimization for the locking VTIs. NOTE: This method will scan SYS.SYSCONGLOMERATES at READ UNCOMMITTED.
        Specified by:
        hashAllConglomerateDescriptorsByNumber in interface DataDictionary
        Parameters:
        tc - TransactionController for the transaction
        Returns:
        A Hashtable with all of the ConglomerateDescriptors in the database hashed by conglomerate number.
        Throws:
        StandardException - Thrown on failure
      • hashAllTableDescriptorsByTableId

        public java.util.Hashtable<UUID,TableDescriptor> hashAllTableDescriptorsByTableId(TransactionController tc)
                                                                                   throws StandardException
        Get all of the TableDescriptors in the database and hash them by TableId This is useful as a performance optimization for the locking VTIs. NOTE: This method will scan SYS.SYSTABLES and SYS.SYSSCHEMAS at READ UNCOMMITTED.
        Specified by:
        hashAllTableDescriptorsByTableId in interface DataDictionary
        Parameters:
        tc - TransactionController for the transaction
        Returns:
        A Hashtable with all of the Table descriptors in the database hashed by TableId
        Throws:
        StandardException - Thrown on failure
      • getConglomerateDescriptor

        public ConglomerateDescriptor getConglomerateDescriptor(UUID uuid)
                                                         throws StandardException
        Get a ConglomerateDescriptor given its UUID. If it is an index conglomerate shared by at least another duplicate index, this returns one of the ConglomerateDescriptors for those indexes.
        Specified by:
        getConglomerateDescriptor in interface DataDictionary
        Parameters:
        uuid - The UUID
        Returns:
        A ConglomerateDescriptor for the conglomerate.
        Throws:
        StandardException - Thrown on failure
      • getConglomerateDescriptors

        public ConglomerateDescriptor[] getConglomerateDescriptors(UUID uuid)
                                                            throws StandardException
        Get an array of ConglomerateDescriptors given the UUID. If it is a heap conglomerate or an index conglomerate not shared by a duplicate index, the size of the return array is 1. If the uuid argument is null, then this method retrieves descriptors for all of the conglomerates in the database.
        Specified by:
        getConglomerateDescriptors in interface DataDictionary
        Parameters:
        uuid - The UUID
        Returns:
        An array of ConglomerateDescriptors for the conglomerate. returns size 0 array if no such conglomerate.
        Throws:
        StandardException - Thrown on failure
      • getConglomerateDescriptor

        public ConglomerateDescriptor getConglomerateDescriptor(long conglomerateNumber)
                                                         throws StandardException
        Get a ConglomerateDescriptor given its conglomerate number. If it is an index conglomerate shared by at least another duplicate index, this returns one of the ConglomerateDescriptors for those indexes.
        Specified by:
        getConglomerateDescriptor in interface DataDictionary
        Parameters:
        conglomerateNumber - The conglomerate number.
        Returns:
        A ConglomerateDescriptor for the conglomerate. Returns NULL if no such conglomerate.
        Throws:
        StandardException - Thrown on failure
      • getConglomerateDescriptors

        public ConglomerateDescriptor[] getConglomerateDescriptors(long conglomerateNumber)
                                                            throws StandardException
        Get an array of conglomerate descriptors for the given conglomerate number. If it is a heap conglomerate or an index conglomerate not shared by a duplicate index, the size of the return array is 1.
        Specified by:
        getConglomerateDescriptors in interface DataDictionary
        Parameters:
        conglomerateNumber - The number for the conglomerate we're interested in
        Returns:
        An array of ConglomerateDescriptors that share the requested conglomerate. Returns size 0 array if no such conglomerate.
        Throws:
        StandardException - Thrown on failure
      • getConglomerateDescriptor

        public ConglomerateDescriptor getConglomerateDescriptor(java.lang.String indexName,
                                                                SchemaDescriptor sd,
                                                                boolean forUpdate)
                                                         throws StandardException
        Gets a conglomerate descriptor for the named index in the given schema, getting an exclusive row lock on the matching row in sys.sysconglomerates (for DDL concurrency) if requested.
        Specified by:
        getConglomerateDescriptor in interface DataDictionary
        Parameters:
        indexName - The name of the index we're looking for
        sd - The schema descriptor
        forUpdate - Whether or not to get an exclusive row lock on the row in sys.sysconglomerates.
        Returns:
        A ConglomerateDescriptor describing the requested conglomerate. Returns NULL if no such conglomerate.
        Throws:
        StandardException - Thrown on failure
      • updateConglomerateDescriptor

        public void updateConglomerateDescriptor(ConglomerateDescriptor cd,
                                                 long conglomerateNumber,
                                                 TransactionController tc)
                                          throws StandardException
        Update the conglomerateNumber for a ConglomerateDescriptor. This is useful, in 1.3, when doing a bulkInsert into an empty table where we insert into a new conglomerate. (This will go away in 1.4.)
        Specified by:
        updateConglomerateDescriptor in interface DataDictionary
        Parameters:
        cd - The ConglomerateDescriptor
        conglomerateNumber - The new conglomerate number
        tc - The TransactionController to use
        Throws:
        StandardException - Thrown on failure
      • updateSystemSchemaAuthorization

        public void updateSystemSchemaAuthorization(java.lang.String aid,
                                                    TransactionController tc)
                                             throws StandardException
        Update all system schemas to have new authorizationId. This is needed while upgrading pre-10.2 databases to 10.2 or later versions. From 10.2, all system schemas would be owned by database owner's authorizationId.
        Parameters:
        aid - AuthorizationID of Database Owner
        tc - TransactionController to use
        Throws:
        StandardException - Thrown on failure
      • updateSchemaAuth

        public void updateSchemaAuth(java.lang.String schemaName,
                                     java.lang.String authorizationId,
                                     TransactionController tc)
                              throws StandardException
        Update authorizationId of specified schemaName
        Parameters:
        schemaName - Schema Name of system schema
        authorizationId - authorizationId of new schema owner
        tc - The TransactionController to use
        Throws:
        StandardException - Thrown on failure
      • updateConglomerateDescriptor

        public void updateConglomerateDescriptor(ConglomerateDescriptor[] cds,
                                                 long conglomerateNumber,
                                                 TransactionController tc)
                                          throws StandardException
        Update the conglomerateNumber for an array of ConglomerateDescriptors. In case of more than one ConglomerateDescriptor, each descriptor should be updated separately, conglomerate id is not same for all the descriptors. Even when indexes are sharing the same conglomerate(conglomerate number), conglomerate ids are unique. This is useful, in 1.3, when doing a bulkInsert into an empty table where we insert into a new conglomerate. (This will go away in 1.4.)
        Specified by:
        updateConglomerateDescriptor in interface DataDictionary
        Parameters:
        cds - The array of ConglomerateDescriptors
        conglomerateNumber - The new conglomerate number
        tc - The TransactionController to use
        Throws:
        StandardException - Thrown on failure
      • getDependentsDescriptorList

        public java.util.List<DependencyDescriptor> getDependentsDescriptorList(java.lang.String dependentID)
                                                                         throws StandardException
        Gets a list of the dependency descriptors for the given dependent's id.
        Specified by:
        getDependentsDescriptorList in interface DataDictionary
        Parameters:
        dependentID - The ID of the dependent we're interested in
        Returns:
        List Returns a list of DependencyDescriptors. Returns an empty List if no stored dependencies for the dependent's ID.
        Throws:
        StandardException - Thrown on failure
      • getProvidersDescriptorList

        public java.util.List<DependencyDescriptor> getProvidersDescriptorList(java.lang.String providerID)
                                                                        throws StandardException
        Gets a list of the dependency descriptors for the given provider's id.
        Specified by:
        getProvidersDescriptorList in interface DataDictionary
        Parameters:
        providerID - The ID of the provider we're interested in
        Returns:
        List Returns a list of DependencyDescriptors. Returns an empty List if no stored dependencies for the provider's ID.
        Throws:
        StandardException - Thrown on failure
      • dropDependentsStoredDependencies

        public void dropDependentsStoredDependencies(UUID dependentsUUID,
                                                     TransactionController tc,
                                                     boolean wait)
                                              throws StandardException
        Description copied from interface: DataDictionary
        Remove all of the stored dependencies for a given dependent's ID from the data dictionary.
        Specified by:
        dropDependentsStoredDependencies in interface DataDictionary
        Parameters:
        dependentsUUID - Dependent's uuid
        tc - TransactionController for the transaction
        wait - If true, then the caller wants to wait for locks. False will be when we using a nested user xaction - we want to timeout right away if the parent holds the lock.
        Throws:
        StandardException - Thrown on failure
      • getUUIDFactory

        public UUIDFactory getUUIDFactory()
        Get the UUID Factory. (No need to make the UUIDFactory a module.)
        Specified by:
        getUUIDFactory in interface DataDictionary
        Returns:
        UUIDFactory The UUID Factory for this DataDictionary.
      • getAliasDescriptor

        public AliasDescriptor getAliasDescriptor(java.lang.String schemaId,
                                                  java.lang.String aliasName,
                                                  char nameSpace)
                                           throws StandardException
        Get a AliasDescriptor by alias name and name space. NOTE: caller responsible for handling no match.
        Specified by:
        getAliasDescriptor in interface DataDictionary
        Parameters:
        schemaId - schema identifier
        aliasName - The alias name.
        nameSpace - The alias type.
        Returns:
        AliasDescriptor AliasDescriptor for the alias name and name space
        Throws:
        StandardException - Thrown on failure
      • getRoutineList

        public java.util.List<AliasDescriptor> getRoutineList(java.lang.String schemaID,
                                                              java.lang.String routineName,
                                                              char nameSpace)
                                                       throws StandardException
        Get the list of routines matching the schema and routine name. While we only support a single alias for a given name,namespace just return a list of zero or one item. If the schema is SYSFUN then do not use the system catalogs, but instead look up the routines from the in-memory table driven by the contents of SYSFUN_FUNCTIONS.
        Specified by:
        getRoutineList in interface DataDictionary
        Throws:
        StandardException
      • resetDatabaseOwner

        public void resetDatabaseOwner(TransactionController tc)
                                throws StandardException
        Reset the database owner according to what is stored in the catalogs. This can change at upgrade time so we have factored this logic into a separately callable method.
        Parameters:
        tc - TransactionController
        Throws:
        StandardException - Thrown on error
      • upgradeFixSystemColumnDefinition

        public void upgradeFixSystemColumnDefinition(CatalogRowFactory rowFactory,
                                                     int columnNumber,
                                                     TransactionController tc)
                                              throws StandardException
        Upgrade an existing system catalog column's definition by setting it to the value it would have in a newly created database. This is only used to for a couple of columns that had incorrectly nullability. Other uses (e.g. changing column type) might require more work.
        Parameters:
        columnNumber - The column to change
        tc - Transaction controller
        Throws:
        StandardException - Standard Derby error policy
      • upgrade_addColumns

        public void upgrade_addColumns(CatalogRowFactory rowFactory,
                                       int[] newColumnIDs,
                                       TransactionController tc)
                                throws StandardException
        Upgrade an existing catalog by adding columns.
        Parameters:
        rowFactory - Associated with this catalog.
        newColumnIDs - Array of 1-based column ids.
        tc - Transaction controller
        Throws:
        StandardException - Standard Derby error policy
      • upgrade_addInvisibleColumns

        public void upgrade_addInvisibleColumns(CatalogRowFactory rowFactory,
                                                int[] newColumnIDs,
                                                TransactionController tc)
                                         throws StandardException
        Add invisible columns to an existing system catalog
        Parameters:
        rowFactory - Associated with this catalog.
        newColumnIDs - Array of 1-based column ids.
        tc - Transaction controller
        Throws:
        StandardException - Standard Derby error policy
      • initializeCatalogInfo

        public void initializeCatalogInfo()
                                   throws StandardException
        Initialize catalog information. This method is overridden by children.
        Throws:
        StandardException - Thrown on error
      • getTransactionCompile

        public TransactionController getTransactionCompile()
                                                    throws StandardException
        Get the TransactionController to use, when not passed in as a parameter. (This hides logic about whether or not we're at boot time in a single place. NOTE: There's no LCC at boot time.) NOTE: All methods in the DD should call this method.
        Returns:
        TransactionController The TC to use.
        Throws:
        StandardException - Thrown on error
      • getTransactionExecute

        public TransactionController getTransactionExecute()
                                                    throws StandardException
        Get the TransactionController to use, when not passed in as a parameter. (This hides logic about whether or not we're at boot time in a single place. NOTE: There's no LCC at boot time.) NOTE: All methods in the DD should call this method.
        Returns:
        TransactionController The TC to use.
        Throws:
        StandardException - Thrown on error
      • getSYSCOLUMNSHeapConglomerateNumber

        public long getSYSCOLUMNSHeapConglomerateNumber()
        Get the heap conglomerate number for SYS.SYSCOLUMNS. (Useful for adding new index to the table.)
        Returns:
        The heap conglomerate number for SYS.SYSCOLUMNS.
      • getSystemSQLName

        public java.lang.String getSystemSQLName()
        Returns a unique system generated name of the form SQLyymmddhhmmssxxn yy - year, mm - month, dd - day of month, hh - hour, mm - minute, ss - second, xx - the first 2 digits of millisec because we don't have enough space to keep the exact millisec value, n - number between 0-9 The number at the end is to handle more than one system generated name request came at the same time. In that case, the timestamp will remain the same, we will just increment n at the end of the name. Following is how we get around the problem of more than 10 system generated name requestes at the same time: When the database boots up, we start a counter with value -1 for the last digit in the generated name. We also keep the time in millisec to keep track of when the last system name was generated. At the boot time, it will be default to 0L. In addition, we have a calendar object for the time in millisec That calendar object is used to fetch yy, mm, dd, etc for the string SQLyymmddhhmmssxxn When the first request for the system generated name comes, time of last system generated name will be less than the current time. We initialize the counter to 0, set the time of last system generated name to the current time truncated off to lower 10ms time. The first name request is the only time we know for sure the time of last system generated name will be less than the current time. After this first request, the next request could be at any time. We go through the following algorithm for every generated name request. First check if the current time(truncated off to lower 10ms) is greater than the timestamp for last system generated name If yes, then we change the timestamp for system generated name to the current timestamp and reset the counter to 0 and generate the name using the current timestamp and 0 as the number at the end of the generated name. If no, then it means this request for generated name has come at the same time as last one. Or it may come at a time less than the last generated name request. This could be because of seasonal time change or somebody manually changing the time on the computer. In any case, if the counter is less than 10(meaning this is not yet our 11th request for generated name at a given time), we use that in the generated name. But if the counter has reached 10(which means, this is the 11th name request at the same time), then we increment the system generated name timestamp by 10ms and reset the counter to 0 (notice, at this point, the timestamp for system generated names is not in sync with the real current time, but we need to have this mechanism to get around the problem of more than 10 generated name requests at a same physical time).
        Specified by:
        getSystemSQLName in interface DataDictionary
        Returns:
        system generated unique name
      • setAutoincrementValue

        public void setAutoincrementValue(TransactionController tc,
                                          UUID tableUUID,
                                          java.lang.String columnName,
                                          long aiValue,
                                          boolean incrementNeeded)
                                   throws StandardException
        sets a new value in SYSCOLUMNS for a particular autoincrement column.
        Specified by:
        setAutoincrementValue in interface DataDictionary
        Parameters:
        tc - Transaction Controller to use.
        columnName - Name of the column.
        aiValue - Value to write to SYSCOLUMNS.
        incrementNeeded - whether to increment the value passed in by the user (aiValue) or not before writing it to SYSCOLUMNS.
        tableUUID - Table Descriptor
        Throws:
        StandardException
      • computeSequenceRowLocation

        public void computeSequenceRowLocation(TransactionController tc,
                                               java.lang.String sequenceIDstring,
                                               RowLocation[] rowLocation,
                                               SequenceDescriptor[] sequenceDescriptor)
                                        throws StandardException
        Computes the RowLocation in SYSSEQUENCES for a particular sequence. Also constructs the sequence descriptor.
        Specified by:
        computeSequenceRowLocation in interface DataDictionary
        Parameters:
        tc - Transaction Controller to use.
        sequenceIDstring - UUID of the sequence as a string
        rowLocation - OUTPUT param for returing the row location
        sequenceDescriptor - OUTPUT param for return the sequence descriptor
        Throws:
        StandardException - thrown on failure.
      • updateCurrentSequenceValue

        public boolean updateCurrentSequenceValue(TransactionController tc,
                                                  RowLocation rowLocation,
                                                  boolean wait,
                                                  java.lang.Long oldValue,
                                                  java.lang.Long newValue)
                                           throws StandardException
        Set the current value of an ANSI/ISO sequence. This method does not perform any sanity checking but assumes that the caller knows what they are doing. If the old value on disk is not what we expect it to be, then we are in a race with another session. They won and we don't update the value on disk. However, if the old value is null, that is a signal to us that we should update the value on disk anyway.
        Specified by:
        updateCurrentSequenceValue in interface DataDictionary
        Parameters:
        tc - Transaction Controller to use.
        rowLocation - Row in SYSSEQUENCES to update.
        wait - True if we should wait for locks
        oldValue - What we expect to find in the CURRENTVALUE column.
        newValue - What to stuff into the CURRENTVALUE column.
        Returns:
        Returns true if the value was successfully updated, false if we lost a race with another session.
        Throws:
        StandardException - thrown on failure.
      • getCurrentValueAndAdvance

        public void getCurrentValueAndAdvance(java.lang.String sequenceUUIDstring,
                                              NumberDataValue returnValue)
                                       throws StandardException
        Description copied from interface: DataDictionary
        Get the next number from an ANSI/ISO sequence generator which was created with the CREATE SEQUENCE statement. May raise an exception if the sequence was defined as NO CYCLE and the range of the sequence is exhausted. May allocate a range of sequence numbers and update the CURRENTVALUE column of the corresponding row in SYSSEQUENCES. This work is done in the execution transaction of the current session.
        Specified by:
        getCurrentValueAndAdvance in interface DataDictionary
        Parameters:
        sequenceUUIDstring - String value of the UUID which identifies the sequence
        returnValue - This is a data value to be stuffed with the next sequence number.
        Throws:
        StandardException - if the sequence does not cycle and its range is exhausted
        See Also:
        DataDictionary.getCurrentValueAndAdvance(java.lang.String, org.apache.derby.iapi.types.NumberDataValue)
      • getBulkInsertCounter

        public BulkInsertCounter getBulkInsertCounter(java.lang.String sequenceUUIDString,
                                                      boolean restart)
                                               throws StandardException
        Description copied from interface: DataDictionary
        Get the identity generator used to support the bulk-insert optimization in InsertResultSet.
        Specified by:
        getBulkInsertCounter in interface DataDictionary
        Parameters:
        sequenceUUIDString - UUID of the sequence which backs the identity column.
        restart - True if the counter should be re-initialized to its start position.
        Throws:
        StandardException
      • flushBulkInsertCounter

        public void flushBulkInsertCounter(java.lang.String sequenceUUIDString,
                                           BulkInsertCounter bic)
                                    throws StandardException
        Description copied from interface: DataDictionary
        Flush the updated values of the BulkInsertCounter to disk and to the original, cached SequenceUpdater. This is used for the bulk-insert optimization in InsertResultSet.
        Specified by:
        flushBulkInsertCounter in interface DataDictionary
        Parameters:
        sequenceUUIDString - UUID of the sequence which backs the identity column.
        bic - the BulkInsertCounter which generates identities for bulk insert
        Throws:
        StandardException
      • addTableDescriptorToOtherCache

        public void addTableDescriptorToOtherCache(TableDescriptor td,
                                                   Cacheable c)
                                            throws StandardException
        Add a table descriptor to the "other" cache. The other cache is determined by the type of the object c.
        Parameters:
        td - TableDescriptor to add to the other cache.
        c - Cacheable Object which lets us figure out the other cache.
        Throws:
        StandardException
      • checkVersion

        public boolean checkVersion(int requiredMajorVersion,
                                    java.lang.String feature)
                             throws StandardException
        Check to see if a database has been upgraded to the required level in order to use a language feature.
        Specified by:
        checkVersion in interface DataDictionary
        Parameters:
        requiredMajorVersion - Data Dictionary major version
        feature - Non-null to throw an error, null to return the state of the version match.
        Returns:
        True if the database has been upgraded to the required level, false otherwise.
        Throws:
        StandardException
      • isReadOnlyUpgrade

        public boolean isReadOnlyUpgrade()
        Description copied from interface: DataDictionary
        Check if the database is read only and requires some form of upgrade that makes the stored prepared statements invalid.
        Specified by:
        isReadOnlyUpgrade in interface DataDictionary
        Returns:
        true if the stored prepared statements are invalid because of an upgrade and the database is read only, false otherwise
      • grantPublicAccessToSystemRoutines

        public void grantPublicAccessToSystemRoutines(java.util.HashSet newlyCreatedRoutines,
                                                      TransactionController tc,
                                                      java.lang.String authorizationID)
                                               throws StandardException
        Grant PUBLIC access to specific system routines. Currently, this is done for some routines in SYSCS_UTIL schema. We grant access to routines which we have just added. Doing it this way lets us declare these routines in one place and re-use this logic during database creation and during upgrade.
        Parameters:
        tc - TransactionController to use
        authorizationID - authorization ID of the permission grantor
        Throws:
        StandardException - Standard exception policy.
      • run

        public final java.util.Properties run()
        Specified by:
        run in interface java.security.PrivilegedAction<java.util.Properties>
      • getColumnPermissions

        public ColPermsDescriptor getColumnPermissions(UUID tableUUID,
                                                       int privType,
                                                       boolean forGrant,
                                                       java.lang.String authorizationId)
                                                throws StandardException
        Get one user's column privileges for a table.
        Specified by:
        getColumnPermissions in interface DataDictionary
        Parameters:
        tableUUID -
        privType - (as int) Authorizer.SELECT_PRIV, Authorizer.UPDATE_PRIV, or Authorizer.REFERENCES_PRIV
        forGrant -
        authorizationId - The user name
        Returns:
        a ColPermsDescriptor or null if the user has no separate column permissions of the specified type on the table. Note that the user may have been granted permission on all the columns of the table (no column list), in which case this routine will return null. You must also call getTablePermissions to see if the user has permission on a set of columns.
        Throws:
        StandardException
      • getColumnPermissions

        public ColPermsDescriptor getColumnPermissions(UUID tableUUID,
                                                       java.lang.String privTypeStr,
                                                       boolean forGrant,
                                                       java.lang.String authorizationId)
                                                throws StandardException
        Get one user's column privileges for a table. This routine gets called during revoke privilege processing
        Specified by:
        getColumnPermissions in interface DataDictionary
        Parameters:
        tableUUID -
        privTypeStr - (as String) Authorizer.SELECT_PRIV, Authorizer.UPDATE_PRIV, or Authorizer.REFERENCES_PRIV
        forGrant -
        authorizationId - The user name
        Returns:
        a ColPermsDescriptor or null if the user has no separate column permissions of the specified type on the table. Note that the user may have been granted permission on all the columns of the table (no column list), in which case this routine will return null. You must also call getTablePermissions to see if the user has permission on a set of columns.
        Throws:
        StandardException
      • addRemovePermissionsDescriptor

        public boolean addRemovePermissionsDescriptor(boolean add,
                                                      PermissionsDescriptor perm,
                                                      java.lang.String grantee,
                                                      TransactionController tc)
                                               throws StandardException
        Add or remove a permission to/from the permission database.
        Specified by:
        addRemovePermissionsDescriptor in interface DataDictionary
        Parameters:
        add - if true then the permission is added, if false the permission is removed
        perm -
        grantee -
        tc -
        Returns:
        True means revoke has removed a privilege from system table and hence the caller of this method should send invalidation actions to PermssionDescriptor's dependents.
        Throws:
        StandardException
      • getVTIClass

        public java.lang.String getVTIClass(TableDescriptor td,
                                            boolean asTableFunction)
                                     throws StandardException
        Description copied from interface: DataDictionary
        Return the Java class to use for the VTI to which the received table descriptor maps. There are two kinds of VTI mappings that we do: the first is for "table names", the second is for "table function names". Table names can only be mapped to VTIs that do not accept any arguments; any VTI that has at least one constructor which accepts one or more arguments must be mapped from a table *function* name. An example of a VTI "table name" is the following: select * from SYSCS_DIAG.LOCK_TABLE In this case "SYSCS_DIAG.LOCK_TABLE" is the table name that we want to map. Since the corresonding VTI does not accept any arguments, this VTI table name can be used anywhere a normal base table name can be used. An example of a VTI "table function name" is the following: select * from TABLE(SYSCS_DIAG.SPACE_TABLE(?)) x In this case "SYSCS_DIAG.SPACE_TABLE" is the table function name that we want to map. Since the corresponding VTI can take either one or two arguments we have to use the TABLE constructor syntax to pass the argument(s) in as if we were making a function call. Hence the term "table function".
        Specified by:
        getVTIClass in interface DataDictionary
        Parameters:
        td - Table descriptor used for the VTI look-up.
        asTableFunction - If false then treat td's descriptor name as a VTI "table name"; if true, treat the descriptor name as a VTI "table function name".
        Returns:
        Java class name to which "td" maps, or null if no mapping is found.
        Throws:
        StandardException
        See Also:
        DataDictionary.getVTIClass(TableDescriptor, boolean)
      • existsGrantToAuthid

        public boolean existsGrantToAuthid(java.lang.String authId,
                                           TransactionController tc)
                                    throws StandardException
        Check all dictionary tables and return true if there is any GRANT descriptor containing authId as its grantee.
        Specified by:
        existsGrantToAuthid in interface DataDictionary
        Parameters:
        authId - grantee for which a grant exists or not
        tc - TransactionController for the transaction
        Returns:
        boolean true if such a grant exists
        Throws:
        StandardException
      • getGenericPermissions

        public PermDescriptor getGenericPermissions(UUID objectUUID,
                                                    java.lang.String objectType,
                                                    java.lang.String privilege,
                                                    java.lang.String granteeAuthId)
                                             throws StandardException
        Get permissions granted to one user for an object using the object's Id and the user's authorization Id.
        Specified by:
        getGenericPermissions in interface DataDictionary
        Parameters:
        objectUUID - The id of the protected object
        objectType - Type of the object (e.g., SEQUENCE)
        privilege - The kind of privilege needed (e.g., PermDescriptor.USAGE_PRIV)
        granteeAuthId - The user or role who wants to have permission on this object
        Returns:
        The descriptor of the permissions for the object
        Throws:
        StandardException
      • getIndexStatsRefresher

        public IndexStatisticsDaemon getIndexStatsRefresher(boolean asDaemon)
        Returns the index statistics refresher.
        Specified by:
        getIndexStatsRefresher in interface DataDictionary
        Parameters:
        asDaemon - whether the usage is automatic (true) or explicit (false)
        Returns:
        The index statistics refresher instance, or null if disabled. If asDaemon is false, an instance will always be returned.
      • disableIndexStatsRefresher

        public void disableIndexStatsRefresher()
        Disables automatic refresh/creation of index statistics at runtime.

        If the daemon is disabled, it can only be enabled again by rebooting the database. Note that this method concerns diabling the daemon at runtime, and only the automatic updates of statistics. If wanted, the user would disable the daemon at boot-time by setting a property (system-wide or database property).

        Usage note: This method was added to allow the index refresher itself to notify the data dictionary that it should be disabled. This only happens if the refresher/daemon experiences severe errors, or a large amount of errors. It would then disable itself to avoid eating up system resources and potentially cause side-effects due to the errors.

        Specified by:
        disableIndexStatsRefresher in interface DataDictionary
      • doCreateIndexStatsRefresher

        public boolean doCreateIndexStatsRefresher()
        Tells if an index statistics refresher should be created for this database.

        The only reason not to create an index statistics refresher is if one already exists.

        Specified by:
        doCreateIndexStatsRefresher in interface DataDictionary
        Returns:
        true if an index statistics refresher should be created, false if one already exists.
      • createIndexStatsRefresher

        public void createIndexStatsRefresher(Database db,
                                              java.lang.String dbName)
        Creates an index statistics refresher for this data dictionary.

        The index statistics refresher is used to create and refresh index cardinality statistics, either automatically or on user demand (i.e. by invoking SYSCS_UTIL.SYSCS_UPDATE_STATISTICS).

        Specified by:
        createIndexStatsRefresher in interface DataDictionary
        Parameters:
        db - the database object associated with this data dictionary
        dbName - the name of the database
      • getDependableFinder

        public DependableFinder getDependableFinder(int formatId)
        Description copied from interface: DataDictionary
        Get a DependableFinder instance.
        Specified by:
        getDependableFinder in interface DataDictionary
        Parameters:
        formatId - the format id
        Returns:
        an instance capable of finding Dependables with the specified format id
      • getColumnDependableFinder

        public DependableFinder getColumnDependableFinder(int formatId,
                                                          byte[] columnBitMap)
        Description copied from interface: DataDictionary
        Get a DependableFinder instance for referenced columns in a table.
        Specified by:
        getColumnDependableFinder in interface DataDictionary
        Parameters:
        formatId - the format id
        columnBitMap - byte array encoding the bitmap of referenced columns
        Returns:
        an instance capable of finding Dependables with the specified format id

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