org.apache.cayenne.modeler.util.ModelerLogFactory.java Source code

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Here is the source code for org.apache.cayenne.modeler.util.ModelerLogFactory.java

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/*****************************************************************
 *   Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.
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package org.apache.cayenne.modeler.util;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogConfigurationException;
import org.apache.commons.logging.impl.LogFactoryImpl;

/**
 * Factory for creating ModelerLogger instances. LogFactoryImpl is subclassed to
 * save default behavior
 */
public class ModelerLogFactory extends LogFactoryImpl {

    /**
     * Local cache of modeler loggers
     */
    protected Map<String, ModelerLogger> localCache;

    public ModelerLogFactory() {
        localCache = new HashMap<>();
    }

    @Override
    public Log getInstance(String name) throws LogConfigurationException {
        ModelerLogger local = localCache.get(name);
        if (local == null) {
            Log def = super.getInstance(name);

            local = new ModelerLogger(name, def);
            localCache.put(name, local);
        }
        return local;
    }
}