org.apache.synapse.commons.evaluators
Class Parser

java.lang.Object
  org.apache.synapse.commons.evaluators.Parser

public class Parser
extends Object

This class is used to parse a Given HTTP request against a set of rules.

A Rule has a priority. If a HTTP request matches the Rule, parser returns the priority corresponding to that rule.

Here is the syntax of the configuration used to building the parser

 <conditions [defualtPriority = "int"]>
     <condition priority = "">
        <and/> | <or> | <not> | <match> | <equal>
     </condition>
 </conditions>
 

Constructor Summary

Parser()
Create a parser with the defualt priority set to -1.

Parser(int defaultPriority)
Create a parser with a default priority.

Method Summary

void	init(OMElement conditions) Build the parser from a given XML
int	parse(EvaluatorContext context) Parse the HTTP request against the condition set and return the matching priority.

Methods inherited from class java.lang.Object

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

Constructor Detail

Parser

public Parser()

Create a parser with the defualt priority set to -1. If a HTTP message doesn't obey any of the conditions parser will return -1.

Parser

public Parser(int defaultPriority)

Create a parser with a default priority. If none of the rules matches the given HTTP request, it returns the default priority.

Parameters:

defaultPriority - default priority

Method Detail

parse

public int parse(EvaluatorContext context)

Parse the HTTP request against the condition set and return the matching priority.

Parameters:

context - context used for holding the HTTP information

Returns:

priority as an integer

init

public void init(OMElement conditions)
          throws EvaluatorException

Build the parser from a given XML

Parameters:

conditions - set of conditions

Throws:

EvaluatorException - if the configuration is invalid