/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* <http://www.gnu.org/licenses/> or <http://www.apache.org/licenses/LICENSE-2.0>.
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.quorum.namespace.java;
import java.lang.reflect.Constructor;
import java.util.Hashtable;
import java.util.NoSuchElementException;
import javax.naming.Binding;
import javax.naming.NameClassPair;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attributes;
import javax.naming.directory.SearchResult;
import org.smallmind.quorum.namespace.java.backingStore.NameTranslator;
public class JavaNamingEnumeration<T> implements NamingEnumeration<T> {
private static final Class[] SEARCH_RESULT_SIGNATURE = new Class[]{String.class, String.class, Object.class, Attributes.class, Boolean.class};
private static final Class[] BINDING_SIGNATURE = new Class[]{String.class, String.class, Object.class, Boolean.class};
private static final Class[] NAME_CLASS_PAIR_SIGNATURE = new Class[]{String.class, String.class, Boolean.class};
private NamingEnumeration internalEnumeration;
private Class<T> typeClass;
private Class internalDirContextClass;
private Hashtable<String, Object> environment;
private NameTranslator nameTranslator;
private JavaNameParser nameParser;
private boolean modifiable;
public JavaNamingEnumeration (Class<T> typeClass, NamingEnumeration<T> internalEnumeration, Class internalDirContextClass, Hashtable<String, Object> environment, NameTranslator nameTranslator, JavaNameParser nameParser, boolean modifiable) {
this.typeClass = typeClass;
this.internalEnumeration = internalEnumeration;
this.internalDirContextClass = internalDirContextClass;
this.environment = environment;
this.nameTranslator = nameTranslator;
this.nameParser = nameParser;
this.modifiable = modifiable;
}
public boolean hasMoreElements () {
try {
return hasMore();
} catch (NamingException n) {
return false;
}
}
public T nextElement () {
try {
return next();
} catch (NamingException n) {
throw new NoSuchElementException("There are no more items within this Enumeration");
}
}
public T next ()
throws NamingException {
NamingException namingException;
Constructor<T> typeConstructor;
Object enumObject;
Object boundObject;
Attributes resultAttributes;
String name;
String className;
boolean isRelative;
enumObject = internalEnumeration.next();
isRelative = ((NameClassPair)enumObject).isRelative();
name = NamingEnumerationUtility.convertName(((NameClassPair)enumObject).getName(), nameTranslator);
className = NamingEnumerationUtility.convertClassName(((NameClassPair)enumObject).getClassName(), internalDirContextClass);
try {
if (enumObject instanceof SearchResult) {
boundObject = NamingEnumerationUtility.convertObject(((SearchResult)enumObject).getObject(), internalDirContextClass, environment, nameTranslator, nameParser, modifiable);
resultAttributes = ((SearchResult)enumObject).getAttributes();
typeConstructor = typeClass.getConstructor(SEARCH_RESULT_SIGNATURE);
return typeConstructor.newInstance(name, className, boundObject, resultAttributes, isRelative);
}
if (enumObject instanceof Binding) {
boundObject = NamingEnumerationUtility.convertObject(((Binding)enumObject).getObject(), internalDirContextClass, environment, nameTranslator, nameParser, modifiable);
typeConstructor = typeClass.getConstructor(BINDING_SIGNATURE);
return typeConstructor.newInstance(name, className, boundObject, isRelative);
} else if (enumObject instanceof NameClassPair) {
typeConstructor = typeClass.getConstructor(NAME_CLASS_PAIR_SIGNATURE);
return typeConstructor.newInstance(name, className, isRelative);
}
} catch (Exception e) {
namingException = new NamingException(e.getMessage());
namingException.setRootCause(e);
throw namingException;
}
return typeClass.cast(enumObject);
}
public boolean hasMore ()
throws NamingException {
return internalEnumeration.hasMore();
}
public void close ()
throws NamingException {
internalEnumeration.close();
}
}