org.datanucleus.store.rdbms.sql.operation
Class Concat3Operation

java.lang.Object
  org.datanucleus.store.rdbms.sql.operation.AbstractSQLOperation
      org.datanucleus.store.rdbms.sql.operation.Concat3Operation

All Implemented Interfaces:

SQLOperation

public class Concat3Operation
extends AbstractSQLOperation

Implementation of CONCAT, using SQL CONCAT operator. Results in

 CAST(expr1 AS VARCHAR(4000)) || CAST(expr2 AS VARCHAR(4000))
 

Field Summary

Fields inherited from class org.datanucleus.store.rdbms.sql.operation.AbstractSQLOperation

exprFactory

Constructor Summary

Concat3Operation()

Method Summary

SQLExpression

getExpression(SQLExpression expr, SQLExpression expr2) Return the expression for this SQL function.

Methods inherited from class org.datanucleus.store.rdbms.sql.operation.AbstractSQLOperation

getMappingForClass, setExpressionFactory

Methods inherited from class java.lang.Object

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

Constructor Detail

Concat3Operation

public Concat3Operation()

Method Detail

getExpression

public SQLExpression getExpression(SQLExpression expr,
                                   SQLExpression expr2)

Description copied from interface: SQLOperation

Return the expression for this SQL function.

Parameters:

expr - Left hand expression

expr2 - Right hand expression

Returns:

The SQL expression for the operation