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, LOCALISER, stmt

Constructor Summary

IndexFunction()

Method Summary

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