org.apache.commons.chain.config
Class ConfigParser

java.lang.Object
  org.apache.commons.chain.config.ConfigParser

public class ConfigParser
extends Object

Class to parse the contents of an XML configuration file (using Commons Digester) that defines and configures commands and command chains to be registered in a Catalog. Advanced users can configure the detailed parsing behavior by configuring the properties of an instance of this class prior to calling the parse() method. It is legal to call the parse() method more than once, in order to parse more than one configuration document.

Version:

$Revision: 482967 $ $Date: 2006-12-06 08:43:48 +0000 (Wed, 06 Dec 2006) $

Author:

Craig R. McClanahan

Constructor Summary

ConfigParser()

Method Summary

Digester	getDigester() Return the Digester instance to be used for parsing, creating one if necessary.
RuleSet	getRuleSet() Return the RuleSet to be used for configuring our Digester parsing rules, creating one if necessary.
boolean	getUseContextClassLoader() Return the "use context class loader" flag.
void	parse(Catalog catalog, URL url) Deprecated. Use parse(URL) on a configuration resource with "factory" element(s) embedded
void	parse(URL url) Parse the XML document at the specified URL using the configured RuleSet, registering catalogs with nested chains and commands as they are encountered.
void	setRuleSet(RuleSet ruleSet) Set the RuleSet to be used for configuring our Digester parsing rules.
void	setUseContextClassLoader(boolean useContextClassLoader) Set the "use context class loader" flag.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConfigParser

public ConfigParser()

Method Detail

getDigester

public Digester getDigester()

Return the Digester instance to be used for parsing, creating one if necessary.

Returns:

A Digester instance.

getRuleSet

public RuleSet getRuleSet()

Return the RuleSet to be used for configuring our Digester parsing rules, creating one if necessary.

Returns:

The RuleSet for configuring a Digester instance.

setRuleSet

public void setRuleSet(RuleSet ruleSet)

Set the RuleSet to be used for configuring our Digester parsing rules.

Parameters:

ruleSet - The new RuleSet to use

getUseContextClassLoader

public boolean getUseContextClassLoader()

Return the "use context class loader" flag. If set to true, Digester will attempt to instantiate new command and chain instances from the context class loader.

Returns:

true if Digester should use the context class loader.

setUseContextClassLoader

public void setUseContextClassLoader(boolean useContextClassLoader)

Set the "use context class loader" flag.

Parameters:

useContextClassLoader - The new flag value

parse

public void parse(Catalog catalog,
                  URL url)
           throws Exception

Deprecated. Use parse(URL) on a configuration resource with "factory" element(s) embedded

Parse the XML document at the specified URL, using the configured RuleSet, registering top level commands into the specified Catalog. Use this method only if you have NOT included any factory element in your configuration resource, and wish to supply the catalog explictly.

Parameters:

catalog - Catalog into which configured chains are to be registered

url - URL of the XML document to be parsed

Throws:

Exception - if a parsing error occurs

parse

public void parse(URL url)
           throws Exception

Parse the XML document at the specified URL using the configured RuleSet, registering catalogs with nested chains and commands as they are encountered. Use this method only if you have included one or more factory elements in your configuration resource.

Parameters:

url - URL of the XML document to be parsed

Throws:

Exception - if a parsing error occurs