Class StringTrimMethod

java.lang.Object

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

org.datanucleus.store.rdbms.sql.method.StringTrimMethod

All Implemented Interfaces:

SQLMethod

public class StringTrimMethod
extends SimpleStringMethod

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

Constructor Summary

Constructors

Constructor	Description
StringTrimMethod()

Method Summary

Modifier and Type	Method	Description
SQLExpression	getExpression(SQLStatement stmt, SQLExpression expr, List args)	Return the expression for this SQL function.
protected String	getFunctionName()

Methods inherited from class Object

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

Constructor Details

StringTrimMethod

public StringTrimMethod()

Method Details

getFunctionName

protected String getFunctionName()

Specified by:

getFunctionName in class SimpleStringMethod

getExpression

public SQLExpression getExpression(SQLStatement stmt,
 SQLExpression expr,
 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:

stmt - SQLStatement that this expression is for

expr - The expression that it is invoked on

args - Arguments passed in

Returns:

The SQL expression using the SQL function