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

java.lang.Object
  extended by org.datanucleus.store.rdbms.sql.operation.AbstractSQLOperation
      extended by 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


Copyright © 2009. All Rights Reserved.