Network Deployment (Distributed operating systems), v8.0 > Reference > Developer detailed usage information
AccessIntent interface
The AccessIntent interface is available to bean-managed persistence (BMP) entity beans.
A BMP entity bean can get and use an instance of the AccessIntent interface. For more information see Use the AccessIntent API.
AccessIntent interface
package com.ibm.websphere.appprofile.accessintent; /** * This interface defines the essential access intents * available at run time. */ public interface AccessIntent { /** * Returns the concurrency control intent, which indicates * the application prefers either pessimistic or optimistic * concurrency control when accessing the current component * in the context of the current transaction. */ public int getConcurrencyControl(); public final int CONCURRENCY_CONTROL_PESSIMISTIC = 1; public final int CONCURRENCY_CONTROL_OPTIMISTIC = 2; /** * Returns access type intent, which indicates the application * intends either update or read access of the current component * in the context of the current transaction. */ public int getAccessType(); public final int ACCESS_TYPE_UPDATE= 1; public final int ACCESS_TYPE_READ = 2; /** * Returns an integer value that indicates that the run time should * assume that there will be no collision on retrieved rows. */ public int getPessimisticUpdateLockHint(); public final static int PESSIMISTIC_UPDATE_LOCK_HINT_NOCOLLISION = 1; public final static int PESSIMISTIC_UPDATE_LOCK_HINT_WEAKEST_LOCK_AT_LOAD = 2; public final static int PESSIMISTIC_UPDATE_LOCK_HINT_NONE = 3; public final static int PESSIMISTIC_UPDATE_LOCK_HINT_EXCLUSIVE = 4; /* * Returns an integer value that indicates that the run time should * assume that there will be collisions on retrieved rows. */ public int getPessimisticUpdateLockHint(); public final static int PESSIMISTIC_UPDATE_LOCK_HINT_NOCOLLISION = 1; public final static int PESSIMISTIC_UPDATE_LOCK_HINT_WEAKEST_LOCK_AT_LOAD = 2; public final static int PESSIMISTIC_UPDATE_LOCK_HINT_NONE = 3; public final static int PESSIMISTIC_UPDATE_LOCK_HINT_EXCLUSIVE = 4; /** * Returns the collection access intent, which indicates the * application intends to access the objects returned by the * currently executing finder in either serial or random fashion. */ public int getCollectionAccess(); public final int COLLECTION_ACCESS_RANDOM = 1; public final int COLLECTION_ACCESS_SERIAL = 2; /** * Returns the collection scope, which indicates the maximum * lifespan of a lazy collection. */ public int getCollectionScope(); public final int COLLECTION_SCOPE_TRANSACTION = 1; public final int COLLECTION_SCOPE_ACTIVITYSESSION = 2; public final int COLLECTION_SCOPE_TIMEOUT = 3; /** * Returns the timeout value in seconds when collectionScope is Timeout. */ public int getCollectionTimeout(); /** * Returns the number of elements the application requests be contained * in each segment of the element collection returned by the currently * executing finder. */ public int getCollectionIncrement(); /** * Returns the ReadAheadHint requested by the application for the currently * executing finder. */ public ReadAheadHint getReadAheadHint(); /** * Returns the number of elements the application requests be contained in * each segment of a query made on a database. */ public int getResourceManagerPreFetchIncrement();
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