--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.naming/share/classes/com/sun/jndi/ldap/PersistentSearchControl.java	Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 1999, 2002, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.jndi.ldap;
+
+import java.io.IOException;
+
+/**
+ * This class implements the LDAPv3 Request Control for the persistent search
+ * mechanism as defined in
+ * <a href="http://www.ietf.org/internet-drafts/draft-ietf-ldapext-psearch-02.txt">draft-ietf-ldapext-psearch-02.txt</a>.
+ *
+ * The control's value has the following ASN.1 definition:
+ * <pre>
+ *
+ *     PersistentSearch ::= SEQUENCE {
+ *         changeTypes INTEGER,
+ *         changesOnly BOOLEAN,
+ *         returnECs BOOLEAN
+ *     }
+ *
+ * </pre>
+ *
+ * @see EntryChangeResponseControl
+ * @author Vincent Ryan
+ */
+final public class PersistentSearchControl extends BasicControl {
+
+    /**
+     * The persistent search control's assigned object identifier
+     * is 2.16.840.1.113730.3.4.3.
+     */
+    public static final String OID = "2.16.840.1.113730.3.4.3";
+
+    /**
+     * Indicates interest in entries which have been added.
+     */
+    public static final int ADD = 1;
+
+    /**
+     * Indicates interest in entries which have been deleted.
+     */
+    public static final int DELETE = 2;
+
+    /**
+     * Indicates interest in entries which have been modified.
+     */
+    public static final int MODIFY = 4;
+
+    /**
+     * Indicates interest in entries which have been renamed.
+     */
+    public static final int RENAME = 8;
+
+    /**
+     * Indicates interest in entries which have been added, deleted,
+     * modified or renamed.
+     */
+    public static final int ANY = ADD | DELETE | MODIFY | RENAME;
+
+    /**
+     * The change types of interest. All changes, by default.
+     *
+     * @serial
+     */
+    private int changeTypes = ANY;
+
+    /**
+     * Return original entries and changed entries or only changed entries.
+     *
+     * @serial
+     */
+    private boolean changesOnly = false;
+
+    /**
+     * Return entry change controls.
+     *
+     * @serial
+     */
+    private boolean returnControls = true;
+
+    private static final long serialVersionUID = 6335140491154854116L;
+
+    /**
+     * Constructs a persistent search non-critical control.
+     * The original entries, any changed entries (additions,
+     * deletions, modifications or renames) and entry change
+     * controls are requested.
+     *
+     * @exception IOException If a BER encoding error occurs.
+     */
+    public PersistentSearchControl() throws IOException {
+        super(OID);
+        super.value = setEncodedValue();
+    }
+
+    /**
+     * Constructs a persistent search control.
+     *
+     * @param   changeTypes     The change types of interest.
+     * @param   changesOnly     Return original entries and changed entries
+     *                          or only the changed entries.
+     * @param   returnControls  Return entry change controls.
+     * @param   criticality     The control's criticality.
+     * @exception IOException If a BER encoding error occurs.
+     */
+    public PersistentSearchControl(int changeTypes, boolean changesOnly,
+        boolean returnControls, boolean criticality) throws IOException {
+
+        super(OID, criticality, null);
+        this.changeTypes = changeTypes;
+        this.changesOnly = changesOnly;
+        this.returnControls = returnControls;
+        super.value = setEncodedValue();
+    }
+
+    /*
+     * Sets the ASN.1 BER encoded value of the persistent search control.
+     * The result is the raw BER bytes including the tag and length of
+     * the control's value. It does not include the controls OID or criticality.
+     *
+     * @return A possibly null byte array representing the ASN.1 BER encoded
+     *         value of the LDAP persistent search control.
+     * @exception IOException If a BER encoding error occurs.
+     */
+    private byte[] setEncodedValue() throws IOException {
+
+        // build the ASN.1 encoding
+        BerEncoder ber = new BerEncoder(32);
+
+        ber.beginSeq(Ber.ASN_SEQUENCE | Ber.ASN_CONSTRUCTOR);
+            ber.encodeInt(changeTypes);
+            ber.encodeBoolean(changesOnly);
+            ber.encodeBoolean(returnControls);
+        ber.endSeq();
+
+        return ber.getTrimmedBuf();
+    }
+}