org.datanucleus.store.rdbms.sql.method
Class StringToLowerMethod

java.lang.Object
  extended by org.datanucleus.store.rdbms.sql.method.AbstractSQLMethod
      extended by org.datanucleus.store.rdbms.sql.method.SimpleStringMethod
          extended by org.datanucleus.store.rdbms.sql.method.StringToLowerMethod
All Implemented Interfaces:
SQLMethod

public class StringToLowerMethod
extends SimpleStringMethod

Expression handler to invoke the SQL LOWER function. For use in evaluating StringExpression.toLowerCase() where the RDBMS supports this function. Returns a StringExpression "LOWER({stringExpr})".


Field Summary
 
Fields inherited from class org.datanucleus.store.rdbms.sql.method.AbstractSQLMethod
clr, exprFactory, LOCALISER, stmt
 
Constructor Summary
StringToLowerMethod()
           
 
Method Summary
 SQLExpression getExpression(SQLExpression expr, java.util.List args)
          Return the expression for this SQL function.
protected  java.lang.String getFunctionName()
           
 
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

StringToLowerMethod

public StringToLowerMethod()
Method Detail

getFunctionName

protected java.lang.String getFunctionName()
Specified by:
getFunctionName in class SimpleStringMethod

getExpression

public SQLExpression getExpression(SQLExpression expr,
                                   java.util.List args)
Description copied from interface: SQLMethod
Return the expression for this SQL function.

Specified by:
getExpression in interface SQLMethod
Overrides:
getExpression in class SimpleStringMethod
Parameters:
expr - The expression that it is invoked on
args - Arguments passed in
Returns:
The SQL expression using the SQL function


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