org.apache.catalina.users.MemoryUserDatabaseFactory Maven / Gradle / Ivy
/*
* 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.apache.catalina.users;
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.RefAddr;
import javax.naming.Reference;
import javax.naming.spi.ObjectFactory;
/**
* JNDI object creation factory for MemoryUserDatabase
* instances. This makes it convenient to configure a user database
* in the global JNDI resources associated with this Catalina instance,
* and then link to that resource for web applications that administer
* the contents of the user database.
*
* The MemoryUserDatabase instance is configured based
* on the following parameter values:
*
* - pathname - Absolute or relative (to the directory
* path specified by the
catalina.base system property)
* pathname to the XML file from which our user information is loaded,
* and to which it is stored. [conf/tomcat-users.xml]
*
*
* @author Craig R. McClanahan
* @version $Id: MemoryUserDatabaseFactory.java 1094650 2011-04-18 16:59:26Z markt $
* @since 4.1
*/
public class MemoryUserDatabaseFactory implements ObjectFactory {
// --------------------------------------------------------- Public Methods
/**
* Create and return a new MemoryUserDatabase instance
* that has been configured according to the properties of the
* specified Reference. If you instance can be created,
* return null instead.
*
* @param obj The possibly null object containing location or
* reference information that can be used in creating an object
* @param name The name of this object relative to nameCtx
* @param nameCtx The context relative to which the name
* parameter is specified, or null if name
* is relative to the default initial context
* @param environment The possibly null environment that is used in
* creating this object
*/
@Override
public Object getObjectInstance(Object obj, Name name, Context nameCtx,
Hashtable environment)
throws Exception {
// We only know how to deal with javax.naming.References
// that specify a class name of "org.apache.catalina.UserDatabase"
if ((obj == null) || !(obj instanceof Reference)) {
return (null);
}
Reference ref = (Reference) obj;
if (!"org.apache.catalina.UserDatabase".equals(ref.getClassName())) {
return (null);
}
// Create and configure a MemoryUserDatabase instance based on the
// RefAddr values associated with this Reference
MemoryUserDatabase database = new MemoryUserDatabase(name.toString());
RefAddr ra = null;
ra = ref.get("pathname");
if (ra != null) {
database.setPathname(ra.getContent().toString());
}
ra = ref.get("readonly");
if (ra != null) {
database.setReadonly(Boolean.valueOf(ra.getContent().toString()).booleanValue());
}
// Return the configured database instance
database.open();
// Don't try something we know won't work
if (!database.getReadonly())
database.save();
return (database);
}
}