/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * 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.
   */
  package org.argeo.slc;
  
  
  /** Canonical implementation of {@link NameVersion} */
  public class DefaultNameVersion implements NameVersion,
  		Comparable<NameVersion> {
  	private String name;
  	private String version;
  
  	public DefaultNameVersion() {
  	}
  
  	/** Interprets string in OSGi-like format my.module.name;version=0.0.0 */
  	public DefaultNameVersion(String nameVersion) {
  		int index = nameVersion.indexOf(";version=");
  		if (index < 0) {
  			setName(nameVersion);
  			setVersion(null);
  		} else {
  			setName(nameVersion.substring(0, index));
  			setVersion(nameVersion.substring(index + ";version=".length()));
  		}
  	}
  
  	public DefaultNameVersion(String name, String version) {
  		this.name = name;
  		this.version = version;
  	}
  
  	public DefaultNameVersion(NameVersion nameVersion) {
  		this.name = nameVersion.getName();
  		this.version = nameVersion.getVersion();
  	}
  
  	public String getName() {
  		return name;
  	}
  
  	public void setName(String name) {
  		this.name = name;
  	}
  
  	public String getVersion() {
  		return version;
  	}
  
  	public void setVersion(String version) {
  		this.version = version;
  	}
  
  	@Override
  	public boolean equals(Object obj) {
  		if (obj instanceof NameVersion) {
  			NameVersion nameVersion = (NameVersion) obj;
  			return name.equals(nameVersion.getName())
  					&& version.equals(nameVersion.getVersion());
  		} else
  			return false;
  	}
  
  	@Override
  	public int hashCode() {
  		return name.hashCode() + version.hashCode();
  	}
  
  	@Override
  	public String toString() {
  		return name + ":" + version;
  	}
  
  	public int compareTo(NameVersion o) {
  		if (o.getName().equals(name))
  			return version.compareTo(o.getVersion());
  		else
  			return name.compareTo(o.getName());
  	}
  }