com.webobjects.webservices.generation
Class WOBeginTransactionOperation

java.lang.Object
  com.webobjects.appserver.WOElement
      com.webobjects.appserver.WOComponent
          com.webobjects.webservices.generation.WOOperation
              com.webobjects.webservices.generation.WOBeginTransactionOperation

All Implemented Interfaces:

Cloneable, NSKeyValueCoding, NSKeyValueCoding.ErrorHandling, NSKeyValueCodingAdditions, NSValidation, Serializable, WOActionResults

public class WOBeginTransactionOperation

extends WOOperation

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class com.webobjects.appserver.WOComponent

WOComponent.Event

Nested classes inherited from class com.webobjects.foundation.NSKeyValueCoding

NSKeyValueCoding.DefaultImplementation, NSKeyValueCoding.ErrorHandling, NSKeyValueCoding.Null, NSKeyValueCoding.UnknownKeyException, NSKeyValueCoding.Utility, NSKeyValueCoding.ValueAccessor

Nested classes inherited from class com.webobjects.foundation.NSKeyValueCodingAdditions

NSKeyValueCodingAdditions.DefaultImplementation, NSKeyValueCodingAdditions.Utility

Nested classes inherited from class com.webobjects.foundation.NSValidation

NSValidation.DefaultImplementation, NSValidation.Utility, NSValidation.ValidationException

Field Summary

Fields inherited from interface com.webobjects.foundation.NSKeyValueCoding

NullValue

Fields inherited from interface com.webobjects.foundation.NSKeyValueCodingAdditions

KeyPathSeparator

Constructor Summary

WOBeginTransactionOperation(WOContext context)

Method Summary

Object	invoke() Creates a session and configures it to handle transactions.
static boolean	requiresEntity() Returns true if this operation must work with an entity.

Methods inherited from class com.webobjects.webservices.generation.WOOperation

aggregateValuesResult, attributeClassNames, classesForKeyPaths, comparisonKeys, d2wContext, editingContext, gidArgumentKey, inputPartKeyPaths, inputPartNames, inputPartValues, outputPartKeyPaths, outputPartNames, propertyNameForPartName, saveChangesInEditingContext, serializationStrategy, setD2wContext, unspecifiedArgumentKey

Methods inherited from class com.webobjects.appserver.WOComponent

appendToResponse, application, awake, baseURL, bindingKeys, canAccessFieldsDirectly, canGetValueForBinding, canSetValueForBinding, clone, context, debugString, descriptionForResponse, ensureAwakeInContext, frameworkName, generateResponse, handleQueryWithUnboundKey, handleTakeValueForUnboundKey, hasBinding, hasSession, invokeAction, isCachingEnabled, isEventLoggingEnabled, isStateless, logString, name, pageWithName, parent, path, pathURL, performParentAction, pullValuesFromParent, pushValuesToParent, reset, session, set_componentUnroll, set_unroll, setCachingEnabled, setValueForBinding, sleep, synchronizesVariablesWithBindings, takeValueForKey, takeValueForKeyPath, takeValuesFromRequest, template, templateWithHTMLString, templateWithName, toString, unableToSetNullForKey, validateTakeValueForKeyPath, validateValueForKey, validationFailedWithException, valueForBinding, valueForKey, valueForKeyPath

Methods inherited from class java.lang.Object

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

Constructor Detail

WOBeginTransactionOperation

public WOBeginTransactionOperation(WOContext context)

Method Detail

invoke

public Object invoke()

Creates a session and configures it to handle transactions. Once this operation is invoked, calls to saveChangesInEditingContext will not result in changes to an operation's editing context being saved until an invocation of a WOCommitTransaction operation. A subsequent invocation of a WORollbackTransaction operation will reset the editing context.

Between the invocation of a begin transaction and either a commit or roll back transaction operation, all other operations invoked by the same client (carrying the proper SOAP headers) share a WOSession and EOEditingContext.

Overrides:

invoke in class WOOperation

Returns:

null

See Also:

WOCommitTransactionOperation, WORollbackTransactionOperation

requiresEntity

public static boolean requiresEntity()

Description copied from class: WOOperation

Returns true if this operation must work with an entity. Subclasses should override this method to return false ONLY if the operation will never return, or accept as input, an EOEnterpriseObject.