org.beangle.commons.property.PropertyConfigBean.java Source code

Introduction

Here is the source code for org.beangle.commons.property.PropertyConfigBean.java

Source

/* Copyright c 2005-2012.
 * Licensed under GNU  LESSER General Public License, Version 3.
 * http://www.gnu.org/licenses
 */
package org.beangle.commons.property;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

import org.apache.commons.beanutils.ConvertUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.math.NumberUtils;
import org.beangle.commons.collection.CollectUtils;

/**
 * ?
 * 
 * @author chaostone
 */
public class PropertyConfigBean implements PropertyConfig {

    private Map<String, Object> properties = new HashMap<String, Object>();

    private List<PropertyConfigListener> listeners = CollectUtils.newArrayList();

    public Object get(String name) {
        return (Object) properties.get(name);
    }

    public void set(String name, Object value) {
        properties.put(name, value);
    }

    @SuppressWarnings("unchecked")
    public <T> T get(Class<T> clazz, String name) {
        Object value = get(name);
        if (null == value) {
            return null;
        } else {
            return (T) ConvertUtils.convert(value, clazz);
        }
    }

    public int getInt(String name) {
        return NumberUtils.toInt((String) get(name));
    }

    public boolean getBool(String name) {
        return Boolean.valueOf((String) get(name)).booleanValue();
    }

    public void set(Properties newer) {
        for (Object key : newer.keySet()) {
            this.properties.put(key.toString(), newer.get(key));
        }
    }

    public void addConfigListener(PropertyConfigListener listener) {
        listeners.add(listener);
    }

    public void removeConfigListener(PropertyConfigListener listener) {
        listeners.remove(listener);
    }

    public void multicast() {
        PropertyConfigEvent e = new PropertyConfigEvent(this);
        for (PropertyConfigListener listener : listeners) {
            listener.onConfigEvent(e);
        }
    }

    public String toString() {
        StringBuilder sb = new StringBuilder("DefaultSystemConfig[");
        List<String> props = new ArrayList<String>(properties.keySet());
        Collections.sort(props);
        int maxlength = 0;
        for (String property : props) {
            if (property.length() > maxlength) {
                maxlength = property.length();
            }
        }
        for (String property : props) {
            sb.append('\n').append(property);
            sb.append(StringUtils.repeat(" ", maxlength - property.length()));
            sb.append('=').append(properties.get(property));
        }
        sb.append("\n]");
        return sb.toString();
    }

    public Set<String> getNames() {
        return properties.keySet();
    }
}