org.apache.derby.impl.sql.execute

Class ConstantActionActivation

java.lang.Object

org.apache.derby.impl.sql.execute.BaseActivation

org.apache.derby.impl.sql.execute.ConstantActionActivation

All Implemented Interfaces:

Dependable, GeneratedByteCode, Activation, Dependent, CursorActivation

public final class ConstantActionActivation
extends BaseActivation

A pre-compiled activation that supports a single ResultSet with a single constant action. All the execution logic is contained in the constant action.

At compile time for DDL statements this class will be picked as the implementation of Activation. The language PreparedStatement will contain the ConstantAction created at compiled time. At execute time this class then fetches a language ResultSet using ResultSetFactory.getDDLResultSet and executing the ResultSet will invoke the execute on the ConstantAction.

Field Summary

Fields inherited from interface org.apache.derby.catalog.Dependable

ACTIVATION, ALIAS, COLUMNS_IN_TABLE, COLUMNS_PERMISSION, CONGLOMERATE, CONSTRAINT, DEFAULT, FILE, HEAP, INDEX, PERM, PREPARED_STATEMENT, ROLE_GRANT, ROUTINE_PERMISSION, SCHEMA, SEQUENCE, STORED_PREPARED_STATEMENT, TABLE, TABLE_PERMISSION, TRIGGER, VIEW

Constructor Summary

Constructors

Constructor and Description
ConstantActionActivation()

Method Summary

Modifier and Type	Method and Description
void	postConstructor() Called by the class manager just after calling setGC().

Methods inherited from class org.apache.derby.impl.sql.execute.BaseActivation

addWarning, allocateQualArray, checkIfThisActivationHasHoldCursor, checkStatementValidity, clearCurrentRow, clearHeapConglomerateController, clearIndexScanInfo, clearParentResultSets, clearWarnings, close, e0, e1, e2, e3, e4, e5, e6, e7, e8, e9, execute, getAutoGeneratedKeysColumnIndexes, getAutoGeneratedKeysColumnNames, getAutoGeneratedKeysResultsetMode, getClassType, getConstantAction, getContextManager, getCurrentConnection, getCurrentRow, getCurrentValueAndAdvance, getCursorName, getCursorResultSet, getDataValueFactory, getDB2Length, getDDLTableDescriptor, getDependableFinder, getDynamicResults, getExecutionFactory, getForCreateTable, getForUpdateIndexScan, getGC, getHeapConglomerateController, getIndexConglomerateNumber, getIndexScanController, getLanguageConnectionContext, getMaxDynamicResults, getMaxRows, getMethod, getNumSubqueries, getObjectID, getObjectName, getParameterValueSet, getParentActivation, getParentResultSet, getParentResultSetKeys, getPreparedStatement, getResultDescription, getResultSet, getResultSetFactory, getResultSetHoldability, getRowLocationTemplate, getScrollable, getSQLSessionContextForChildren, getTargetResultSet, getTargetVTI, getTransactionController, getWarnings, informOfRowCount, initFromContext, isClosed, isCursorActivation, isInUse, isPersistent, isSingleExecution, isValid, makeInvalid, markUnused, materializeResultSetIfPossible, popConstantAction, prepareToInvalidate, pushConstantAction, reinitializeQualifiers, reset, setAutoGeneratedKeysResultsetInfo, setColumnPosition, setCurrentRow, setCursorName, setDDLTableDescriptor, setForCreateTable, setForUpdateIndexScan, setGC, setHeapConglomerateController, setIndexConglomerateNumber, setIndexScanController, setMaxRows, setParameters, setParentActivation, setParentResultSet, setQualifier, setResultSetHoldability, setSingleExecution, setTargetVTI, setupActivation, setupSQLSessionContextForChildren, throwIfClosed, throwIfMissingParms

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ConstantActionActivation

public ConstantActionActivation()

Method Detail

postConstructor

public void postConstructor()

Description copied from interface: GeneratedByteCode

Called by the class manager just after calling setGC().