ComponentBase.java

package com.pi4j.component;

/*
 * #%L
 * **********************************************************************
 * ORGANIZATION  :  Pi4J
 * PROJECT       :  Pi4J :: Device Abstractions
 * FILENAME      :  ComponentBase.java  
 * 
 * This file is part of the Pi4J project. More information about 
 * this project can be found here:  http://www.pi4j.com/
 * **********************************************************************
 * %%
 * Copyright (C) 2012 - 2013 Pi4J
 * %%
 * 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.
 * #L%
 */


import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

public abstract class ComponentBase implements Component {
    
    private String name = null;
    private Object tag = null;
    private final Map<String, String> properties = new ConcurrentHashMap<String, String>();
    
    @Override
    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String getName() {
        return name;
    }
    
    @Override
    public void setTag(Object tag) {
        this.tag = tag;
    }

    @Override
    public Object getTag() {
        return tag;
    }

    @Override
    public void setProperty(String key, String value) {
        properties.put(key, value);
    }

    @Override
    public boolean hasProperty(String key) {
        return properties.containsKey(key);
    }

    @Override
    public String getProperty(String key, String defaultValue) {
        if (properties.containsKey(key)) {
            if(properties.get(key) == null || properties.get(key).isEmpty())
                return defaultValue;
            else
                return properties.get(key);
        }
        return defaultValue;
    }

    @Override
    public String getProperty(String key) {
        return getProperty(key, null);
    }

    @Override
    public Map<String, String> getProperties() {
        return properties;
    }

    @Override
    public void removeProperty(String key) {
        if (properties.containsKey(key)) {
            properties.remove(key);
        }
    }

    @Override
    public void clearProperties() {
        properties.clear();
    }    
    
}