/*
* (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
*
* 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.
*
* Contributors:
* Nuxeo - initial API and implementation
*
* $Id$
*/
package org.nuxeo.ecm.core.schema;
import java.io.Serializable;
/**
* @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
*/
public class Namespace implements Serializable {
public static final Namespace DEFAULT_NS = new Namespace();
private static final long serialVersionUID = -3069469489908062592L;
private static final String DEFAULT_PREFIX = "";
private static final String DEFAULT_URI = "";
public final String uri;
public final String prefix;
public Namespace(String uri, String prefix) {
assert uri != null;
if (uri.length() == 0 && prefix.length() > 0) {
throw new IllegalArgumentException("prefix cannot be not empty if the uri is empty");
}
this.uri = uri;
this.prefix = prefix == null ? "" : prefix;
}
private Namespace() {
this(DEFAULT_URI, DEFAULT_PREFIX);
}
public boolean hasPrefix() {
return prefix.length() > 0;
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj instanceof Namespace) {
Namespace ns = (Namespace) obj;
return ns.uri.equals(uri) && ns.prefix.equals(prefix);
}
return false;
}
@Override
public int hashCode() {
return uri.hashCode();
}
@Override
public String toString() {
return uri + " [" + prefix + ']';
}
}