/**
* 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.
*/
package org.meaningfulweb.util.domain;
import java.io.InputStream;
import java.util.HashMap;
/**
* Storage class for <code>DomainSuffix</code> objects Note: this class is
* singleton
*
* @author Enis Soztutar <enis.soz.nutch@gmail.com>
*/
public class DomainSuffixes {
private HashMap<String, DomainSuffix> domains = new HashMap<String, DomainSuffix>();
private static DomainSuffixes instance;
/** private ctor */
private DomainSuffixes() {
String file = "domain-suffixes.xml";
InputStream input = Thread.currentThread().getContextClassLoader()
.getResourceAsStream(file);
try {
new DomainSuffixesReader().read(this, input);
}
catch (Exception ex) {
ex.printStackTrace();
}
}
/**
* Singleton instance, lazy instantination
*
* @return
*/
public static DomainSuffixes getInstance() {
if (instance == null) {
instance = new DomainSuffixes();
}
return instance;
}
void addDomainSuffix(DomainSuffix tld) {
domains.put(tld.getDomain(), tld);
}
/** return whether the extension is a registered domain entry */
public boolean isDomainSuffix(String extension) {
return domains.containsKey(extension);
}
/**
* Return the {@link DomainSuffix} object for the extension, if extension is a
* top level domain returned object will be an instance of
* {@link TopLevelDomain}
*
* @param extension of the domain
*/
public DomainSuffix get(String extension) {
return domains.get(extension);
}
}