Package com.randomnoun.common.jexl.eval.function

Class LikeFunction

java.lang.Object

com.randomnoun.common.jexl.eval.function.LikeFunction

All Implemented Interfaces:

EvalFunction

Direct Known Subclasses:

LikeFunction

public class LikeFunction
extends Object
implements EvalFunction

Defines a like() function.

like() takes a two parameters, the string being matched and the SQL LIKE pattern we are matching on. The LIKE pattern uses the "%" character to represent any sequence of characters, and "_" to indicate a single character. This class automatically deals with conflicts with the Java regex parser, so the pattern may contain any other Unicode or regular expression characters, which will be treated like any other character.

The result of the function is of type Boolean.

Field Summary

Fields inherited from interface com.randomnoun.common.jexl.eval.EvalFunction

logger

Constructor Summary

Constructors

Constructor	Description
LikeFunction()

Method Summary

Modifier and Type	Method	Description
Object	evaluate(String functionName, EvalContext context, List<Object> arguments)	Implements the function as per the class description.

Methods inherited from class java.lang.Object

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

Constructor Details

LikeFunction

public LikeFunction()

Method Details

evaluate

public Object evaluate(String functionName,
 EvalContext context,
 List<Object> arguments)
                throws EvalException

Implements the function as per the class description.

Specified by:

evaluate in interface EvalFunction

Parameters:

functionName - The name of the function to be evaluated (can be disregarded if this class only performs a single function)

context - The context in which the function is being executed (could hold things like local variable values, current line number, etc...)

arguments - The arguments passed to this function

Returns:

The result of the evaluation

Throws:

EvalException - An exception occurred during evaluation