/*
* Copyright 1999,2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.log4j.joran.spi;
import org.apache.log4j.helpers.OptionConverter;
import org.apache.log4j.joran.action.Action;
import org.apache.log4j.spi.LoggerRepository;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
public class SimpleRuleStore implements RuleStore {
// key: Pattern instance, value: ArrayList containing actions
HashMap rules = new HashMap();
LoggerRepository repository;
public SimpleRuleStore() {
}
public SimpleRuleStore(LoggerRepository repository) {
this.repository = repository;
}
/**
* Add a new rule, i.e. a pattern, action pair to the rule store.
* <p>
* Note that the added action's LoggerRepository will be set in the
* process.
*/
public void addRule(Pattern pattern, Action action) {
action.setLoggerRepository(repository);
List a4p = (List) rules.get(pattern);
if (a4p == null) {
a4p = new ArrayList();
rules.put(pattern, a4p);
}
a4p.add(action);
}
public void addRule(Pattern pattern, String actionClassName) {
Action action =
(Action) OptionConverter.instantiateByClassName(
actionClassName, Action.class, null);
if(action != null) {
addRule(pattern, action);
}
}
public List matchActions(Pattern pattern) {
//System.out.println("pattern to search for:" + pattern + ", hashcode: " + pattern.hashCode());
//System.out.println("rules:" + rules);
ArrayList a4p = (ArrayList) rules.get(pattern);
if (a4p != null) {
return a4p;
} else {
Iterator patternsIterator = rules.keySet().iterator();
int max = 0;
Pattern longestMatch = null;
while (patternsIterator.hasNext()) {
Pattern p = (Pattern) patternsIterator.next();
if ((p.size() > 1) && p.get(0).equals("*")) {
int r = pattern.tailMatch(p);
//System.out.println("tailMatch " +r);
if (r > max) {
//System.out.println("New longest match "+p);
max = r;
longestMatch = p;
}
}
}
if (longestMatch != null) {
return (ArrayList) rules.get(longestMatch);
} else {
return null;
}
}
}
}