org.datanucleus.store.rdbms.sql.method

Class IndexFunction

java.lang.Object

org.datanucleus.store.rdbms.sql.method.AbstractSQLMethod

org.datanucleus.store.rdbms.sql.method.IndexFunction

All Implemented Interfaces:

SQLMethod

public class IndexFunction
extends AbstractSQLMethod

Expression handler for JPQL "INDEX" expression to return the index of an element. Returns a NumericExpression.

Field Summary

Fields inherited from class org.datanucleus.store.rdbms.sql.method.AbstractSQLMethod

clr, exprFactory, stmt

Constructor Summary

Constructors

Constructor and Description
IndexFunction()

Method Summary

Modifier and Type	Method and Description
SQLExpression	getExpression(SQLExpression ignore, List args) Return the expression for this SQL function.

Methods inherited from class org.datanucleus.store.rdbms.sql.method.AbstractSQLMethod

getMappingForClass, setStatement

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexFunction

public IndexFunction()

Method Detail

getExpression

public SQLExpression getExpression(SQLExpression ignore,
                                   List args)

Description copied from interface: SQLMethod

Return the expression for this SQL function.

Parameters:

ignore - The expression that it is invoked on

args - Arguments passed in

Returns:

The SQL expression using the SQL function