ERXEntityDependencyOrderingDelegate Class Reference

Collaboration diagram for ERXEntityDependencyOrderingDelegate:

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List of all members.

Public Member Functions
boolean	databaseContextShouldHandleDatabaseException (EODatabaseContext dbCtxt, Throwable exception)
NSArray	databaseContextWillPerformAdaptorOperations (EODatabaseContext aDatabaseContext, NSArray adaptorOperations, EOAdaptorChannel adaptorChannel)
	ERXEntityDependencyOrderingDelegate ()
Static Public Attributes
static final String	ERXEntityDependencyOrderingDelegateActiveKey = "com.webobjects.eoaccess.ERXEntityDependencyOrderingDelegate.active"
Protected Member Functions
NSComparator	adaptorOpComparator ()
Protected Attributes
NSComparator	adaptorOpComparator
Static Private Attributes
static Logger	logger = Logger.getLogger(ERXEntityDependencyOrderingDelegate.class)

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Detailed Description

EODatabaseContext delegate to order adaptor operations by FK constraints. This prevents most ordering operations on databases like MS SQL that do not support deferred constraints like a real database. The easiest way to use this is:

 ERXDatabaseContextMulticastingDelegate.addDefaultDelegate(new ERXEntityDependencyOrderingDelegate());
 

To turn this on for a Wonder application, just set this property:

 com.webobjects.eoaccess.ERXEntityDependencyOrderingDelegate.active = true
 

Author:

chill

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Constructor & Destructor Documentation

ERXEntityDependencyOrderingDelegate

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)

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Member Function Documentation

NSComparator adaptorOpComparator

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)

[protected]

Lazy creation of an EOAdaptorOpComparator that uses a list of entities that are in FK dependancy order. Enable DEBUG logging to see the ordered list of entity names.

See also:

com.webobjects.eoaccess.EOAdaptorOpComparator

Returns:

EOAdaptorOpComparator that uses a list of entities that are in FK dependancy order

boolean databaseContextShouldHandleDatabaseException	(	EODatabaseContext	dbCtxt,
		Throwable	exception
	)

NSArray databaseContextWillPerformAdaptorOperations	(	EODatabaseContext	aDatabaseContext,
		NSArray	adaptorOperations,
		EOAdaptorChannel	adaptorChannel
	)

EODatabaseContext.Delegate method to order a list of adaptor operations. Uses adaptorOpComparator() for the ordering.

Parameters:

	aDatabaseContext	EODatabaseContext that the operations will be executed in
	adaptorOperations	list of operations to execute
	adaptorChannel	the adaptor channel these will be executed on

See also:

com.webobjects.eoaccess.EODatabaseContext.Delegate.databaseContextWillPerformAdaptorOperations(EODatabaseContext, NSArray,EOAdaptorChannel)

Returns:

operations in an order that should avoid FK constraint violations

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Member Data Documentation

NSComparator adaptorOpComparator [protected]

final String ERXEntityDependencyOrderingDelegateActiveKey = "com.webobjects.eoaccess.ERXEntityDependencyOrderingDelegate.active" [static]

Logger logger = Logger.getLogger(ERXEntityDependencyOrderingDelegate.class) [static, private]

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The documentation for this class was generated from the following file:

• /opt/source/Wonder/Frameworks/Core/ERExtensions/Sources/com/webobjects/eoaccess/ERXEntityDependencyOrderingDelegate.java