/*
* 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 joran.implicit;
import org.apache.log4j.joran.spi.Interpreter;
import org.apache.log4j.joran.spi.Pattern;
import org.apache.log4j.joran.spi.RuleStore;
import org.apache.log4j.joran.spi.SimpleRuleStore;
import java.util.List;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
/**
* This example illustrates the usage of implcit actions.
*
* The crucial point to remember about implicit actions is that they
* are not associated with a pattern. Moreover, they are added directly to
* a Joran Interpreter instead of a rule store.
*
* @author Ceki Güulcü
*/
public class PrintMe {
public static void main(String[] args) throws Exception {
// Uncomment the following line in order to enable log statements generated
// from joran itself.
// org.apache.log4j.BasicConfigurator.configure();
RuleStore ruleStore = new SimpleRuleStore();
// we start with the rule for the top-most (root) element
ruleStore.addRule(new Pattern("*/foo"), new NOPAction());
// Create a new Joran Interpreter and hand it our simple rule store.
Interpreter ji = new Interpreter(ruleStore);
// --------------------------+
// Add an implicit action. |
// --------------------------+
ji.addImplicitAction(new PrintMeImplicitAction());
// Create a SAX parser
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser saxParser = spf.newSAXParser();
// Parse the file given as the application's first argument and
// set the SAX ContentHandler to the Joran Interpreter we just created.
saxParser.parse(args[0], ji);
// The file has been parsed and interpreted. We now print any errors that
// might have occured.
List errorList = ji.getExecutionContext().getErrorList();
if (errorList.size() > 0) {
System.out.println("The following errors occured:");
for (int i = 0; i < errorList.size(); i++) {
System.out.println("\t" + errorList.get(i));
}
}
}
}