org.hsqldb.dbinfo

Class DatabaseInformation

java.lang.Object

org.hsqldb.dbinfo.DatabaseInformation

public class DatabaseInformation
extends java.lang.Object

Base class for system tables. Includes a factory method which returns the most complete implementation available in the jar. This base implementation knows the names of all system tables but returns null for any system table.

This class has been developed from scratch to replace the previous DatabaseInformation implementations.

Since:

1.7.2

Method Summary

Modifier and Type	Method and Description
Table	getSystemTable(Session session, java.lang.String name) Retrieves a table with the specified name whose content may depend on the execution context indicated by the session argument as well as the current value of withContent.
static DatabaseInformation	newDatabaseInformation(Database db) Factory method returns the fullest system table producer implementation available.
void	setStore(Session session, Table table, PersistentStore store) Sets the store for the given session, populates the store if necessary.
void	setWithContent(boolean withContent) Switches this table producer between producing empty (surrogate) or contentful tables.

Methods inherited from class java.lang.Object

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

Method Detail

newDatabaseInformation

public static final DatabaseInformation newDatabaseInformation(Database db)

Factory method returns the fullest system table producer implementation available. This instantiates implementations beginning with the most complete, finally choosing an empty table producer implemenation (this class) if no better instance can be constructed.

Parameters:

db - The Database object for which to produce system tables

Returns:

the fullest system table producer implementation available

getSystemTable

public Table getSystemTable(Session session,
                            java.lang.String name)

Retrieves a table with the specified name whose content may depend on the execution context indicated by the session argument as well as the current value of withContent.

Parameters:

session - the context in which to produce the table

name - the name of the table to produce

Returns:

a table corresponding to the name and session arguments, or null if there is no such table to be produced

setStore

public void setStore(Session session,
                     Table table,
                     PersistentStore store)

Sets the store for the given session, populates the store if necessary.

setWithContent

public final void setWithContent(boolean withContent)

Switches this table producer between producing empty (surrogate) or contentful tables.

Parameters:

withContent - if true, then produce contentful tables, else produce emtpy (surrogate) tables