Logback: the reliable, generic, fast and flexible logging framework.
Copyright (C) 1999-2015, QOS.ch. All rights reserved.
This program and the accompanying materials are dual-licensed under
either the terms of the Eclipse Public License v1.0 as published by
the Eclipse Foundation
  or (per the licensee's choosing)
under the terms of the GNU Lesser General Public License version 2.1
as published by the Free Software Foundation.
/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.core.joran.action;

import java.util.HashMap;
import java.util.Map;

import org.xml.sax.Attributes;

import ch.qos.logback.core.CoreConstants;
import ch.qos.logback.core.joran.spi.InterpretationContext;
import ch.qos.logback.core.util.OptionHelper;

public class ConversionRuleAction extends Action {
    boolean inError = false;

    
Instantiates an layout of the given class and sets its name.
/**
     * Instantiates an layout of the given class and sets its name.
     *
     */
    @SuppressWarnings("unchecked")
    public void begin(InterpretationContext ec, String localName, Attributes attributes) {
        // Let us forget about previous errors (in this object)
        inError = false;

        String errorMsg;
        String conversionWord = attributes.getValue(ActionConst.CONVERSION_WORD_ATTRIBUTE);
        String converterClass = attributes.getValue(ActionConst.CONVERTER_CLASS_ATTRIBUTE);

        if (OptionHelper.isEmpty(conversionWord)) {
            inError = true;
            errorMsg = "No 'conversionWord' attribute in <conversionRule>";
            addError(errorMsg);

            return;
        }

        if (OptionHelper.isEmpty(converterClass)) {
            inError = true;
            errorMsg = "No 'converterClass' attribute in <conversionRule>";
            ec.addError(errorMsg);

            return;
        }

        try {
            Map<String, String> ruleRegistry = (Map) context.getObject(CoreConstants.PATTERN_RULE_REGISTRY);
            if (ruleRegistry == null) {
                ruleRegistry = new HashMap<String, String>();
                context.putObject(CoreConstants.PATTERN_RULE_REGISTRY, ruleRegistry);
            }
            // put the new rule into the rule registry
            addInfo("registering conversion word " + conversionWord + " with class [" + converterClass + "]");
            ruleRegistry.put(conversionWord, converterClass);
        } catch (Exception oops) {
            inError = true;
            errorMsg = "Could not add conversion rule to PatternLayout.";
            addError(errorMsg);
        }
    }

    
Once the children elements are also parsed, now is the time to activate
the appender options.
/**
     * Once the children elements are also parsed, now is the time to activate
     * the appender options.
     */
    public void end(InterpretationContext ec, String n) {
    }

    public void finish(InterpretationContext ec) {
    }
}