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oracle.eclipselink.coherence.integrated.querying
Class ReadAllFromCoherence

java.lang.Object
oracle.eclipselink.coherence.integrated.internal.querying.CoherenceRedirector
oracle.eclipselink.coherence.integrated.querying.ReadAllFromCoherence

All Implemented Interfaces:

java.io.Serializable, QueryRedirector

public class ReadAllFromCoherence

extends CoherenceRedirector

implements QueryRedirector

Purpose: This Query Redirector should be set on any class or query where the user wants Coherence to be checked for data instead of the database. With this Redirector set TopLink will not issue any SQL for Reads unless the query can not be translated into a Coherence filter. Developers should note that Coherence will return only those object that are in the Cache any objects that may fit the query but remain on the database only will not be returned. Developers should set the Coherence Cache name that corresponds to this class in a descriptor property called "coherence.cache.name". Each class should have its own Cache unless the PK's of the instances are unique amoung all classes stored in a single cache This Redirector can be set on the class descriptor through a Session or Descriptor customizer or annotations.

Since:

Oracle TopLink 11g (11.1.1.0.0)

Author:

Gordon Yorke

See Also:

setDefaultInsertQueryRedirector(QueryRedirector), QueryRedirectors, Serialized Form

Field Summary

Fields inherited from class oracle.eclipselink.coherence.integrated.internal.querying.CoherenceRedirector

filterFactory, namedCache, shouldTranslatePKs, translationDelegate

Constructor Summary

ReadAllFromCoherence()

Method Summary

java.lang.Object

invokeQuery(DatabaseQuery query, Record arguments, Session session) REQUIRED: Perform the query.

Methods inherited from class oracle.eclipselink.coherence.integrated.internal.querying.CoherenceRedirector

getFilterFactory, getNamedCache, getTranslationFailureDelegate, shouldTranslatePKs

Methods inherited from class java.lang.Object

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

Constructor Detail

ReadAllFromCoherence

public ReadAllFromCoherence()

Method Detail

invokeQuery

public java.lang.Object invokeQuery(DatabaseQuery query,
                                    Record arguments,
                                    Session session)

Description copied from interface: QueryRedirector

REQUIRED: Perform the query. This must execute the query base on the arguments and return a valid result for the query.

Specified by:

invokeQuery in interface QueryRedirector

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