er.extensions.jdbc

Class ERXJDBCAdaptor.Channel

java.lang.Object

com.webobjects.eoaccess.EOAdaptorChannel

com.webobjects.jdbcadaptor.JDBCChannel

er.extensions.jdbc.ERXJDBCAdaptor.Channel

Enclosing class:

ERXJDBCAdaptor

public static class ERXJDBCAdaptor.Channel
extends JDBCChannel

Channel subclass to support notification posting.

Author:

ak

Nested Class Summary

Nested classes/interfaces inherited from class com.webobjects.eoaccess.EOAdaptorChannel

EOAdaptorChannel.Delegate

Field Summary

Fields

Modifier and Type	Field and Description
static String	COLUMN_CLASS_NAME_KEY

Fields inherited from class com.webobjects.jdbcadaptor.JDBCChannel

_attributes, _fetchColumnCount, _isOpen, _resultSet, _rowsProcessedCount, _rowsUpdateCount, _selectedColumns, _statement, _storedProcedureBindings

Fields inherited from class com.webobjects.eoaccess.EOAdaptorChannel

_context, _debug, _delegate, _delegateRespondsTo_didChangeResultSet, _delegateRespondsTo_didEvaluateExpression, _delegateRespondsTo_didExecuteStoredProcedure, _delegateRespondsTo_didFetchRow, _delegateRespondsTo_didFinishFetching, _delegateRespondsTo_didPerformOperations, _delegateRespondsTo_didSelectAttributes, _delegateRespondsTo_shouldConstructStoredProcedureReturnValues, _delegateRespondsTo_shouldEvaluateExpression, _delegateRespondsTo_shouldExecuteStoredProcedure, _delegateRespondsTo_shouldReturnValuesForStoredProcedure, _delegateRespondsTo_shouldSelectAttributes, _delegateRespondsTo_willFetchRow, _delegateRespondsTo_willPerformOperations, _rawAttributesCache, _rawDictionaryInitializer, AdaptorFailureKey, AdaptorOperationsKey, AdaptorOptimisticLockingFailure, FailedAdaptorOperationKey

Constructor Summary

Constructors

Constructor and Description
Channel(JDBCContext jdbccontext)

Method Summary

Modifier and Type	Method and Description
static Class	columnClass() The class of the JDBCColumn.
int	deleteRowsDescribedByQualifier(EOQualifier eoqualifier, EOEntity eoentity) Overridden to clean up after a transaction fails.
void	evaluateExpression(EOSQLExpression eosqlexpression) Overridden to clean up after a transaction fails.
void	executeStoredProcedure(EOStoredProcedure eostoredprocedure, NSDictionary nsdictionary) Overridden to clean up after a transaction fails.
static ERXJDBCColumn	newERXJDBCColumn(EOAttribute attribute, JDBCChannel channel, int column, ResultSet rs)
static ERXJDBCColumn	newERXJDBCColumn(ERXJDBCAdaptor.Channel channel)
void	performAdaptorOperations(NSArray ops) Overridden to post a notification when the operations were performed.
NSArray	primaryKeysForNewRowsWithEntity(int cnt, EOEntity entity) Batch-fetches new primary keys.
void	selectAttributes(NSArray array, EOFetchSpecification fetchspecification, boolean lock, EOEntity entity) Overridden to switch the connection to read-only while selecting.
void	setAttributesToFetch(NSArray<EOAttribute> attributes)
int	updateValuesInRowsDescribedByQualifier(NSDictionary nsdictionary, EOQualifier eoqualifier, EOEntity eoentity) Overridden to clea up after a transaction fails.

Methods inherited from class com.webobjects.jdbcadaptor.JDBCChannel

addStoredProceduresNamed, attributesToFetch, cancelFetch, closeChannel, describeModelWithTableNames, describeResults, describeStoredProcedureNames, describeTableNames, fetchRow, insertRow, isFetchInProgress, isOpen, openChannel, primaryKeyForNewRowWithEntity, returnValuesForLastStoredProcedureInvocation, rowsProcessedCount

Methods inherited from class com.webobjects.eoaccess.EOAdaptorChannel

_raiseOptimisticLockingExceptionWithReason, _setRawDictionaryInitializerForAttributes, adaptorContext, delegate, deleteRowDescribedByQualifier, dictionaryWithObjectsForAttributes, lockRowComparingAttributes, performAdaptorOperation, setDelegate, updateValuesInRowDescribedByQualifier

Methods inherited from class java.lang.Object

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

Field Detail

COLUMN_CLASS_NAME_KEY

public static final String COLUMN_CLASS_NAME_KEY

See Also:

Constant Field Values

Constructor Detail

Channel

public Channel(JDBCContext jdbccontext)

Method Detail

columnClass

public static Class columnClass()

The class of the JDBCColumn. It must subclass ERXJDBCColumn and provide implementations for the same two constructors as ERXJDBCColumn. It is set using the property er.extensions.ERXJDBCAdaptor.columnClassName If no value is set, then the default class is ERXJDBCColumn.

Returns:

The ERXJDBCColumn subclass

newERXJDBCColumn

public static ERXJDBCColumn newERXJDBCColumn(ERXJDBCAdaptor.Channel channel)

newERXJDBCColumn

public static ERXJDBCColumn newERXJDBCColumn(EOAttribute attribute,
                                             JDBCChannel channel,
                                             int column,
                                             ResultSet rs)

setAttributesToFetch

public void setAttributesToFetch(NSArray<EOAttribute> attributes)

Overrides:

setAttributesToFetch in class JDBCChannel

selectAttributes

public void selectAttributes(NSArray array,
                             EOFetchSpecification fetchspecification,
                             boolean lock,
                             EOEntity entity)

Overridden to switch the connection to read-only while selecting.

Overrides:

selectAttributes in class JDBCChannel

performAdaptorOperations

public void performAdaptorOperations(NSArray ops)

Overridden to post a notification when the operations were performed.

Overrides:

performAdaptorOperations in class EOAdaptorChannel

primaryKeysForNewRowsWithEntity

public NSArray primaryKeysForNewRowsWithEntity(int cnt,
                                               EOEntity entity)

Batch-fetches new primary keys. Set the property er.extensions.ERXPrimaryKeyBatchSize to a number larger than 0. Also, you can fine-tune the size by adding a key ERXPrimaryKeyBatchSize to your model or entity user info.

Overrides:

primaryKeysForNewRowsWithEntity in class JDBCChannel

evaluateExpression

public void evaluateExpression(EOSQLExpression eosqlexpression)

Overridden to clean up after a transaction fails.

Overrides:

evaluateExpression in class JDBCChannel

executeStoredProcedure

public void executeStoredProcedure(EOStoredProcedure eostoredprocedure,
                                   NSDictionary nsdictionary)

Overridden to clean up after a transaction fails.

Overrides:

executeStoredProcedure in class JDBCChannel

deleteRowsDescribedByQualifier

public int deleteRowsDescribedByQualifier(EOQualifier eoqualifier,
                                          EOEntity eoentity)

Overridden to clean up after a transaction fails.

Overrides:

deleteRowsDescribedByQualifier in class JDBCChannel

updateValuesInRowsDescribedByQualifier

public int updateValuesInRowsDescribedByQualifier(NSDictionary nsdictionary,
                                                  EOQualifier eoqualifier,
                                                  EOEntity eoentity)

Overridden to clea up after a transaction fails.

Overrides:

updateValuesInRowsDescribedByQualifier in class JDBCChannel