Module org.refcodes.criteria

Package org.refcodes.criteria

Class ExpressionQueryFactoryImpl

java.lang.Object

org.refcodes.criteria.ExpressionQueryFactoryImpl

All Implemented Interfaces:

QueryFactory<String>

public class ExpressionQueryFactoryImpl
extends Object
implements QueryFactory<String>

The ExpressionCriteriaFactory is capable of creating query String instances from Criteria instances; the query String instances which can be used as parts of SQL statements.

Version:

$Id: $Id

Author:

steiner

Constructor Summary

Constructors

Constructor	Description
ExpressionQueryFactoryImpl()

Method Summary

Modifier and Type	Method	Description
String	fromCriteria(Criteria aCriteria)	Generates a query from the provided Criteria (tree).
String	toQuery(IntersectWithCriteria aCriteriaNode, boolean isCriteriaTreeRoot)	Generates a query string for the given CriteriaNode.
String	toQuery(LessThanCriteria<?> aCriteriaLeaf, boolean isCriteriaTreeRoot)	Generates a query string for the given CriteriaLeaf.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionQueryFactoryImpl

public ExpressionQueryFactoryImpl()

Method Detail

fromCriteria

public String fromCriteria(Criteria aCriteria)

Generates a query from the provided Criteria (tree).

Specified by:

fromCriteria in interface QueryFactory<String>

Parameters:

aCriteria - The Criteria from which to generate the query.

Returns:

A query generated from the provided Criteria (tree).

toQuery

public String toQuery(IntersectWithCriteria aCriteriaNode,
                      boolean isCriteriaTreeRoot)

Generates a query string for the given CriteriaNode.

Parameters:

aCriteriaNode - The CriteriaNode for which to generate the query.

isCriteriaTreeRoot - True in case the CriteriaNode is the root of the Criteria tree. Being root means dedicated handling of the CriteriaNode then not being root.

Returns:

The query generated from the given CriteriaNode.

toQuery

public String toQuery(LessThanCriteria<?> aCriteriaLeaf,
                      boolean isCriteriaTreeRoot)

Generates a query string for the given CriteriaLeaf.

Parameters:

aCriteriaLeaf - The CriteriaLeaf for which to generate the query.

isCriteriaTreeRoot - True in case the CriteriaLeaf is the root of the Criteria tree. Being root means dedicated handling of the CriteriaLeaf then not being root.

Returns:

The query generated from the given CriteriaLeaf.