QueryByIdentity

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org.apache.ojb.broker.query
Class QueryByIdentity

java.lang.Object
  org.apache.ojb.broker.query.AbstractQueryImpl
      org.apache.ojb.broker.query.QueryByIdentity

All Implemented Interfaces:: Query, java.io.Serializable

public class QueryByIdentity
extends AbstractQueryImpl
implements Query

represents a search by identity. "find the article with id 7" could be represented as: Article example = new Article(); example.setId(7); Query qry = new QueryByIdentity(example); The PersistenceBroker can retrieve Objects by examples as follows: PersistenceBroker broker = PersistenceBrokerFactory.createPersistenceBroker(); Collection col = broker.getObjectByQuery(qry); This Class can also handle working with OJB Identity objects: "find the article with Identity xyz" could be represnted as Identity xyz = new Identity(example); Query qry = new QueryByIdentity(xyz);

Version:: $Id: QueryByIdentity.java,v 1.3 2002/10/05 15:50:58 brj Exp $

Field Summary

private java.lang.Object m_exampleObjectOrIdentity


Fields inherited from class org.apache.ojb.broker.query.AbstractQueryImpl

Fields inherited from interface org.apache.ojb.broker.query.Query

NO_END_AT_INDEX, NO_START_AT_INDEX, NOT_SCROLLABLE, SCROLLABLE

Constructor Summary

QueryByIdentity(java.lang.Object example_or_identity)
          QueryByIdentity can be generated from example Objects or by Identity Objects

Method Summary

Criteria getCriteria()
          no Criteria available

java.lang.Object getExampleObject()
          Answer the example Object

java.lang.Class getSearchClass()
          Answer the search class.

boolean isDistinct()
          return true if select DISTINCT should be used

Methods inherited from class org.apache.ojb.broker.query.AbstractQueryImpl

fullSize, fullSize, getEndAtIndex, getStartAtIndex, setEndAtIndex, setStartAtIndex

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ojb.broker.query.Query

fullSize, fullSize, getEndAtIndex, getStartAtIndex, setEndAtIndex, setStartAtIndex

Field Detail

m_exampleObjectOrIdentity

private java.lang.Object m_exampleObjectOrIdentity

Constructor Detail