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Tomcat10 Slf4j Logback Integration

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/**
 * 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 org.apache.juli.logging.ch.qos.logback.classic.joran.action;

import org.xml.sax.Attributes;

import org.apache.juli.logging.ch.qos.logback.classic.model.LevelModel;
import org.apache.juli.logging.ch.qos.logback.core.joran.action.Action;
import org.apache.juli.logging.ch.qos.logback.core.joran.JoranConstants;
import org.apache.juli.logging.ch.qos.logback.core.joran.action.BaseModelAction;
import org.apache.juli.logging.ch.qos.logback.core.joran.action.PreconditionValidator;
import org.apache.juli.logging.ch.qos.logback.core.joran.spi.SaxEventInterpretationContext;
import org.apache.juli.logging.ch.qos.logback.core.model.Model;

/**
 * Action to handle the  element nested within  element.
 * 
 * 
 * This action is deprecated. Use the level attribute within the logger
 * element.
 * 
 * @author Ceki Gulcu
 */
public class LevelAction extends BaseModelAction {

    @Override
    protected boolean validPreconditions(SaxEventInterpretationContext interpcont, String name, Attributes attributes) {
        PreconditionValidator pv = new PreconditionValidator(this, interpcont, name, attributes);
        pv.validateValueAttribute();
        addWarn(" element is deprecated. Near [" + name + "] on line " + Action.getLineNumber(interpcont));
        addWarn("Please use \"level\" attribute within  or  elements instead.");
        return pv.isValid();
    }

    @Override
    protected Model buildCurrentModel(SaxEventInterpretationContext interpretationContext, String name,
            Attributes attributes) {
        LevelModel lm = new LevelModel();
        String value = attributes.getValue(JoranConstants.VALUE_ATTR);
        lm.setValue(value);

        return lm;
    }

}