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ojb.broker.query
Class QueryByExample  

java.lang.Object
  ojb.broker.query.QueryByExample

All Implemented Interfaces:

Query, java.io.Serializable

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public class QueryByExample

extends java.lang.Object

implements Query

represents a search by example. "find the article with id 7" could be represented as: Article example = new Article(); example.setId(7); Query qry = new QueryByExample(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 QueryByExample(xyz);

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Field Summary
private  java.lang.Object	exampleObject

 

Constructor Summary

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

 

Method Summary
Criteria	getCriteria()           Method declaration
java.lang.Object	getExampleObject()           Method declaration
java.lang.Class	getSearchClass()           Method declaration
boolean	isDistinct()           return true if select DISTINCT should be used

 

Methods inherited from class java.lang.Object

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

 

Field Detail

exampleObject

private java.lang.Object exampleObject

Constructor Detail

QueryByExample

public QueryByExample(java.lang.Object example_or_identity)

QueryByExample can be generated from example Objects or by Identity Objects

Method Detail

getCriteria

public Criteria getCriteria()

Method declaration

Specified by:

getCriteria in interface Query

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getExampleObject

public java.lang.Object getExampleObject()

Method declaration

Specified by:

getExampleObject in interface Query

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getSearchClass

public java.lang.Class getSearchClass()

Method declaration

Specified by:

getSearchClass in interface Query

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isDistinct

public boolean isDistinct()

Description copied from interface: Query

return true if select DISTINCT should be used

Specified by:

isDistinct in interface Query

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