| /* BinaryRefAddr.java -- RefAddr that uses a byte array as content. |
| Copyright (C) 2001 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath 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, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package javax.naming; |
| |
| import java.util.Arrays; |
| |
| /** |
| * RefAddr that uses a byte array as content. |
| * This can be used to reference objects that can only be represented as |
| * byte arrays. |
| * |
| * @see Reference |
| * @since 1.3 |
| * @author Mark Wielaard (mark@klomp.org) |
| */ |
| public class BinaryRefAddr extends RefAddr |
| { |
| static final long serialVersionUID = -3415254970957330361L; |
| |
| /** |
| * The possibly null content of this RefAddr. |
| * Set by the constructor and returned by getContent. |
| */ |
| private final byte[] buf; |
| |
| /** |
| * Contructs a new BinaryRefAddr with the given type and content. |
| * The complete content of the byte array is copied to a new array. |
| */ |
| public BinaryRefAddr (String addrType, byte[] buf) |
| { |
| this(addrType, buf, 0, buf.length); |
| } |
| |
| /** |
| * Contructs a new BinaryRefAddr with the given type and the content |
| * taken from the given byte array. |
| * The content of the byte array is copied to a new array. |
| */ |
| public BinaryRefAddr (String addrType, byte[] buf, int off, int length) |
| { |
| super(addrType); |
| this.buf = new byte[length]; |
| System.arraycopy(buf, off, this.buf, 0, length); |
| } |
| |
| /** |
| * Returns the byte array contents as given to the constructor. |
| * The returned byte array is shared with this object and other callers. |
| * Changing the content of the buffer is discouraged and should only be |
| * done when the byte array is locked. |
| */ |
| public Object getContent () |
| { |
| return buf; |
| } |
| |
| /** |
| * Checks if the object is a BinaryRefAddr with the same type and with the |
| * same bytes in the content. |
| * |
| * @return true if the given object is an instance of BinaryRefAddr, |
| * the addrType is the same as this addrType and the bytes of the |
| * content are the same. |
| */ |
| public boolean equals(Object o) |
| { |
| if (o instanceof BinaryRefAddr) |
| { |
| BinaryRefAddr refAddr = (BinaryRefAddr) o; |
| if (this.getType().equals(refAddr.getType())) |
| { |
| byte[] c1 = (byte[]) this.getContent(); |
| byte[] c2 = (byte[]) refAddr.getContent(); |
| return Arrays.equals(c1, c2); |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Returns the hashCode which is the hasCode of the String returned by |
| * <code>getType()</code> plus the hashCode of the byte array returned by |
| * <code>getContent</code>. The hashCode of the byte array is calculated |
| * by taking the xor of all the bytes in the array, or zero when there are |
| * no bytes in the array. |
| */ |
| public int hashCode() |
| { |
| int result = 0; |
| byte[] b = (byte[]) getContent(); |
| for (int i=0; i < b.length; i++) |
| result = result^b[i]; |
| |
| return getType().hashCode() + result; |
| } |
| |
| private static char[] hex = {'0', '1', '2', '3', '4', '5', '6', '7', |
| '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'}; |
| /** |
| * Returns a String representation of the RefAddr. Only the first 32 bytes |
| * of the content are added as hex encoded characters. |
| * Should only be used for debugging purposes. |
| */ |
| public String toString() |
| { |
| StringBuffer sb = new StringBuffer("[RefAddr type: "); |
| sb.append(getType()); |
| sb.append(" content: 0x"); |
| byte[] b = (byte[]) getContent(); |
| for (int i=0; i < b.length && i < 32; i++) |
| { |
| sb.append(hex[(b[i]&0xf0)>>4]); |
| sb.append(hex[b[i]&0x0f]); |
| } |
| if (b.length > 32) |
| sb.append("..."); |
| sb.append("]"); |
| return sb.toString(); |
| } |
| } |