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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/javax/naming/BinaryRefAddr.java
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+/* 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 gnu.java.lang.CPStringBuilder;
+
+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()
+ {
+ CPStringBuilder sb = new CPStringBuilder("[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();
+ }
+}