com.webobjects.jdbcadaptor

Class DB2PlugIn

java.lang.Object

com.webobjects.jdbcadaptor.JDBCPlugIn

com.webobjects.jdbcadaptor.DB2PlugIn

Direct Known Subclasses:

DB2ForISeriesPlugIn

public class DB2PlugIn
extends com.webobjects.jdbcadaptor.JDBCPlugIn

WO runtime plugin with support for Postgresql.

Author:

ak, giorgio_v

Nested Class Summary

Nested classes/interfaces inherited from class com.webobjects.jdbcadaptor.JDBCPlugIn

com.webobjects.jdbcadaptor.JDBCPlugIn.LobEntry

Field Summary

Fields inherited from class com.webobjects.jdbcadaptor.JDBCPlugIn

_adaptor, _expressionClass, _expressionFactory, _pkTableName, _subprotocolRegistry, _syncFactory, DefaultPlugInClassName, DefaultPlugInSuffix

Constructor Summary

Constructors

Constructor and Description
DB2PlugIn(com.webobjects.jdbcadaptor.JDBCAdaptor adaptor) Designated constructor.

Method Summary

Modifier and Type	Method and Description
protected static String	_sequenceNameForEntity(com.webobjects.eoaccess.EOEntity entity) Utility method that returns the name of the sequence associated with entity
com.webobjects.eoaccess.EOSynchronizationFactory	createSynchronizationFactory() Returns a "pure java" synchronization factory.
String	databaseProductName() Name of the database.
String	defaultDriverName() Name of the driver.
Class<? extends com.webobjects.jdbcadaptor.JDBCExpression>	defaultExpressionClass() Expression class to create.
protected boolean	isPrimaryKeyGenerationNotSupported(com.webobjects.eoaccess.EOEntity entity) Checks whether primary key generation can be supported for entity
NSDictionary	jdbcInfo() This is usually extracted from the the database using JDBC, but this is really inconvenient for users who are trying to generate SQL at some.
String	name() WebObjects 5.4's version of JDBCAdaptor will use this in order to assemble the name of the prototype to use when it loads models.
NSArray	newPrimaryKeys(int count, com.webobjects.eoaccess.EOEntity entity, com.webobjects.jdbcadaptor.JDBCChannel channel) Overrides the parent implementation to provide a more efficient mechanism for generating primary keys, while generating the primary key support on the fly.
protected String	sequenceNameForEntity(com.webobjects.eoaccess.EOEntity entity) Utility method that returns the name of the sequence associated with entity.
protected boolean	shouldUseBundledJdbcInfo() This method returns true if the connection URL for the database has a special flag on it which indicates to the system that the jdbcInfo which has been bundled into the plugin is acceptable to use in place of actually going to the database and getting it.

Methods inherited from class com.webobjects.jdbcadaptor.JDBCPlugIn

_attributeForPath, _couldIgnoreException, _relationshipForPath, _takeValueForKeyPath, adaptor, assignTypeForAttribute, canDescribeStoredProcedure, connectionPropertiesForConnectionDictionary, connectionURL, createAttributeForRow, createExpressionFactory, createSchemaSynchronizationFactory, databaseInformation, expressionFactory, fetchBLOB, fetchCLOB, isDroppedConnectionException, isPseudoColumnName, jdbcTypeForUnknownExternalType, newPrimaryKeySelectString, plugInNameForURL, plugInValueForValue, primaryKeyLockString, primaryKeyTableCreateString, primaryKeyTableName, removePlugInNameForSubprotocol, schemaNameForEntity, schemaSynchronizationFactory, setPlugInNameForSubprotocol, sqlStatementForGettingProcedureNames, sqlStatementForGettingTableNames, sqlStatementForTableNamed, storedProcedureCatalogPattern, storedProcedureNamed, storedProcedureSchemaPattern, synchronizationFactory, tableTypes, updateLOBs, wildcardPatternForAttributes, wildcardPatternForSchema, wildcardPatternForTables

Methods inherited from class java.lang.Object

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

Constructor Detail

DB2PlugIn

public DB2PlugIn(com.webobjects.jdbcadaptor.JDBCAdaptor adaptor)

Designated constructor.

Method Detail

defaultDriverName

public String defaultDriverName()

Name of the driver.

Overrides:

defaultDriverName in class com.webobjects.jdbcadaptor.JDBCPlugIn

databaseProductName

public String databaseProductName()

Name of the database.

Overrides:

databaseProductName in class com.webobjects.jdbcadaptor.JDBCPlugIn

name

public String name()

WebObjects 5.4's version of JDBCAdaptor will use this in order to assemble the name of the prototype to use when it loads models.

Overrides:

name in class com.webobjects.jdbcadaptor.JDBCPlugIn

Returns:

the name of the plugin.

shouldUseBundledJdbcInfo

protected boolean shouldUseBundledJdbcInfo()

This method returns true if the connection URL for the database has a special flag on it which indicates to the system that the jdbcInfo which has been bundled into the plugin is acceptable to use in place of actually going to the database and getting it.

jdbcInfo

public NSDictionary jdbcInfo()

This is usually extracted from the the database using JDBC, but this is really inconvenient for users who are trying to generate SQL at some. A specific version of the data has been written into the property list of the framework and this can be used as a hard-coded equivalent.

Overrides:

jdbcInfo in class com.webobjects.jdbcadaptor.JDBCPlugIn

createSynchronizationFactory

public com.webobjects.eoaccess.EOSynchronizationFactory createSynchronizationFactory()

Returns a "pure java" synchronization factory. Useful for testing purposes.

Overrides:

createSynchronizationFactory in class com.webobjects.jdbcadaptor.JDBCPlugIn

defaultExpressionClass

public Class<? extends com.webobjects.jdbcadaptor.JDBCExpression> defaultExpressionClass()

Expression class to create. We have custom code, so we need our own class.

Overrides:

defaultExpressionClass in class com.webobjects.jdbcadaptor.JDBCPlugIn

newPrimaryKeys

public NSArray newPrimaryKeys(int count,
                              com.webobjects.eoaccess.EOEntity entity,
                              com.webobjects.jdbcadaptor.JDBCChannel channel)

Overrides the parent implementation to provide a more efficient mechanism for generating primary keys, while generating the primary key support on the fly.

Overrides:

newPrimaryKeys in class com.webobjects.jdbcadaptor.JDBCPlugIn

Parameters:

count - the batch size

entity - the entity requesting primary keys

channel - open JDBCChannel

Returns:

NSArray of NSDictionary where each dictionary corresponds to a unique primary key value

sequenceNameForEntity

protected String sequenceNameForEntity(com.webobjects.eoaccess.EOEntity entity)

Utility method that returns the name of the sequence associated with entity. Non Static so we can reuse code.

Parameters:

entity - the entity

Returns:

the name of the sequence

_sequenceNameForEntity

protected static String _sequenceNameForEntity(com.webobjects.eoaccess.EOEntity entity)

Utility method that returns the name of the sequence associated with entity

Parameters:

entity - the entity

Returns:

the name of the sequence

isPrimaryKeyGenerationNotSupported

protected boolean isPrimaryKeyGenerationNotSupported(com.webobjects.eoaccess.EOEntity entity)

Checks whether primary key generation can be supported for entity

Parameters:

entity - the entity to be checked

Returns:

yes/no