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

java.lang.Object
  extended by org.datanucleus.store.rdbms.sql.method.AbstractSQLMethod
      extended by org.datanucleus.store.rdbms.sql.method.SimpleStringMethod
All Implemented Interfaces:
SQLMethod
Direct Known Subclasses:
StringToLowerMethod, StringToUpperMethod, StringTrimLeftMethod, StringTrimMethod, StringTrimRightMethod

public abstract class SimpleStringMethod
extends AbstractSQLMethod

Expression handler to invoke an SQL String function that takes in an expression.


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

SimpleStringMethod

public SimpleStringMethod()
Method Detail

getFunctionName

protected abstract java.lang.String getFunctionName()

getExpression

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

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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