org.apache.naming.NamingContextBindingsEnumeration 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.naming;
import java.util.Iterator;
import javax.naming.Binding;
import javax.naming.CompositeName;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
/**
* Naming enumeration implementation.
*
* @author Remy Maucherat
* @version $Id: NamingContextBindingsEnumeration.java 1078850 2011-03-07 16:46:45Z markt $
*/
public class NamingContextBindingsEnumeration
implements NamingEnumeration {
// ----------------------------------------------------------- Constructors
public NamingContextBindingsEnumeration(Iterator entries,
Context ctx) {
iterator = entries;
this.ctx = ctx;
}
// -------------------------------------------------------------- Variables
/**
* Underlying enumeration.
*/
protected Iterator iterator;
/**
* The context for which this enumeration is being generated.
*/
private Context ctx;
// --------------------------------------------------------- Public Methods
/**
* Retrieves the next element in the enumeration.
*/
@Override
public Binding next()
throws NamingException {
return nextElementInternal();
}
/**
* Determines whether there are any more elements in the enumeration.
*/
@Override
public boolean hasMore()
throws NamingException {
return iterator.hasNext();
}
/**
* Closes this enumeration.
*/
@Override
public void close()
throws NamingException {
}
@Override
public boolean hasMoreElements() {
return iterator.hasNext();
}
@Override
public Binding nextElement() {
try {
return nextElementInternal();
} catch (NamingException e) {
throw new RuntimeException(e.getMessage(), e);
}
}
private Binding nextElementInternal() throws NamingException {
NamingEntry entry = iterator.next();
Object value;
// If the entry is a reference, resolve it
if (entry.type == NamingEntry.REFERENCE
|| entry.type == NamingEntry.LINK_REF) {
try {
value = ctx.lookup(new CompositeName(entry.name));
} catch (NamingException e) {
throw e;
} catch (Exception e) {
NamingException ne = new NamingException(e.getMessage());
ne.initCause(e);
throw ne;
}
} else {
value = entry.value;
}
return new Binding(entry.name, value.getClass().getName(), value, true);
}
}