org.jpox.store.mapping
Class Mappings

java.lang.Object
  org.jpox.store.mapping.Mappings

public class Mappings
extends java.lang.Object

Helper class for doing many tasks with mapping

Version:

$Revision: 1.28 $

Constructor Summary

Mappings()

Method Summary

static int[]	getParametersIndex(int initialPosition, JavaTypeMapping mapping) Get the indexes/position for Mapping columns in a given the initial position.
static void	selectMapping(QueryExpression qs, DatastoreIdentifier tableIdentifier, StatementExpressionIndex[] statementExpressionIndex) Add columns to a query.
static void	selectMapping(QueryExpression qs, StatementExpressionIndex[] statementExpressionIndex) Add columns to a query.

Methods inherited from class java.lang.Object

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

Constructor Detail

Mappings

public Mappings()

Method Detail

selectMapping

public static void selectMapping(QueryExpression qs,
                                 StatementExpressionIndex[] statementExpressionIndex)

Add columns to a query. Columns added to the query are obtained from the mappings included in the statementExpressionIndex passed as parameter. After adding columns to the query, statementExpressionIndex is updated with the index/position of the columns in the query.

Parameters:

qs - the Query Statement

statementExpressionIndex - the list of mapping/column indexes to be included in the query

selectMapping

public static void selectMapping(QueryExpression qs,
                                 DatastoreIdentifier tableIdentifier,
                                 StatementExpressionIndex[] statementExpressionIndex)

Add columns to a query. Columns added to the query are obtained from the mappings included in the statementExpressionIndex passed as parameter. After adding columns to the query, statementExpressionIndex is updated with the index/position of the columns in the query.

Parameters:

qs - the Query Statement

tableIdentifier - the Identifier for the table which the columns are from (may be null, if TODO)

statementExpressionIndex - the list of mapping/column indexes to be included in the query

getParametersIndex

public static int[] getParametersIndex(int initialPosition,
                                       JavaTypeMapping mapping)

Get the indexes/position for Mapping columns in a given the initial position. Used to set parameters in PreparedStatements

Parameters:

initialPosition - the initialPosition

mapping - the Mapping

Returns:

an array containing indexes for parameters