entry.java

一个java的LDAP服务器

package org.javaldap.server;

/*
The JavaLDAP Server
Copyright (C) 2000  Clayton Donley ([e-mail]) - All Rights Reserved

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program 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 for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

/**
 * The Entry class represents an LDAP entry in Java.
 *
 * @author: Clayton Donley
 */

import java.util.*;
import org.javaldap.server.util.DNUtility;
import org.javaldap.server.util.Logger;
import org.javaldap.server.util.InvalidDNException;
import org.javaldap.server.syntax.DirectoryString;

import java.io.Serializable;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

public class Entry extends Hashtable implements Serializable {

	private DirectoryString name = null;
	private DirectoryString base = null;
	private long id = -1;

	public Entry() {
		super();
	}
	public Entry(byte[] entryBytes) {
		ByteArrayInputStream bais = new ByteArrayInputStream(entryBytes);
		int len = bais.read();
		byte[] nameBytes = new byte[len];
		bais.read(nameBytes,0,len);
		this.name = new DirectoryString(nameBytes);

		len = bais.read();
		byte[] baseBytes = new byte[len];
		bais.read(baseBytes,0,len);
		this.base = new DirectoryString(baseBytes);

		len = bais.read();
		byte[] idBytes = new byte[len];
		bais.read(idBytes,0,len);
		this.id = new Long(new String(idBytes)).longValue();

		int numKeys = bais.read();
		for (int keyCount = 0; keyCount < numKeys; keyCount++) {
			len = bais.read();
			byte[] keyBytes = new byte[len];
			bais.read(keyBytes,0,len);
			Vector values = new Vector();
			int numValues = bais.read(); 
			for (int valCount = 0; valCount < numValues; valCount++) {
				len = bais.read();
				byte[] valBytes = new byte[len];
				bais.read(valBytes,0,len);
				values.addElement(new DirectoryString(valBytes));
			}
			put(new DirectoryString(keyBytes),values);
		}
	}
	public Entry(DirectoryString name) throws InvalidDNException {

		setName(name);
	}
	public byte[] getAsByteArray() {
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		
		int nameLen = getName().length();
		baos.write(nameLen);
		baos.write(getName().getBytes(),0,nameLen);
	
		int baseLen = getBase().length();
		baos.write(baseLen);
		baos.write(getBase().getBytes(),0,baseLen);

		String idString = new Long(getID()).toString();
		int idLen = idString.length();
		baos.write(idLen);
		baos.write(idString.getBytes(),0,idLen);

		baos.write(size());
		Enumeration keyEnum = keys();
		while (keyEnum.hasMoreElements()) {
			DirectoryString aKey = (DirectoryString)keyEnum.nextElement();
			baos.write(aKey.length());
			baos.write(aKey.getBytes(),0,aKey.length());
			Vector vals = (Vector)get(aKey);
			baos.write(vals.size());
			Enumeration valEnum = vals.elements();
			while (valEnum.hasMoreElements()) {
				DirectoryString aVal = (DirectoryString)valEnum.nextElement();
				baos.write(aVal.length());
				baos.write(aVal.getBytes(),0,aVal.length());
			}
		}
		byte [] entryBytes = baos.toByteArray();
		try {
			baos.close();
		} catch (java.io.IOException ioe) {
			ioe.printStackTrace();
		}
		return entryBytes;
	}
	public DirectoryString getBase() {
		return this.base;
	}
	public long getID() {
		return this.id;
	}
	public DirectoryString getName() {
		return this.name;
	}
	public void setBase(DirectoryString base) {
		this.base = base;
	}
	public void setID(long id) {
		this.id = id;
	}
	public void setName(DirectoryString name) throws InvalidDNException {

		Vector rdnComponents = DNUtility.getInstance().explodeDN(name);

		this.name = DNUtility.getInstance().createDN(rdnComponents);

		if (!rdnComponents.isEmpty()) {
			rdnComponents.removeElementAt(0);
		}
		setBase(DNUtility.getInstance().createDN(rdnComponents));

		//Logger.getInstance().log(Logger.LOG_DEBUG,"New Entry Name: " + getName());
		//Logger.getInstance().log(Logger.LOG_DEBUG,"New Entry Base: " + getBase());

	}
}