jdk/src/java.naming/share/classes/javax/naming/LinkException.java
changeset 25859 3317bb8137f4
parent 22974 4bf6c0d73bb8
child 32029 a5538163e144
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.naming/share/classes/javax/naming/LinkException.java	Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,304 @@
+/*
+ * Copyright (c) 1999, 2004, 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 javax.naming;
+
+/**
+ * This exception is used to describe problems encountered while resolving links.
+ * Additional information is added to the base NamingException for pinpointing
+ * the problem with the link.
+ *<p>
+ * Analogously to how NamingException captures name resolution information,
+ * LinkException captures "link"-name resolution information pinpointing
+ * the problem encountered while resolving a link. All these fields may
+ * be null.
+ * <ul>
+ * <li> Link Resolved Name. Portion of link name that has been resolved.
+ * <li> Link Resolved Object. Object to which resolution of link name proceeded.
+ * <li> Link Remaining Name. Portion of link name that has not been resolved.
+ * <li> Link Explanation. Detail explaining why link resolution failed.
+ *</ul>
+ *
+  *<p>
+  * A LinkException instance is not synchronized against concurrent
+  * multithreaded access. Multiple threads trying to access and modify
+  * a single LinkException instance should lock the object.
+  *
+  * @author Rosanna Lee
+  * @author Scott Seligman
+  *
+  * @see Context#lookupLink
+  * @see LinkRef
+  * @since 1.3
+  */
+
+
+  /*<p>
+  * The serialized form of a LinkException object consists of the
+  * serialized fields of its NamingException superclass, the link resolved
+  * name (a Name object), the link resolved object, link remaining name
+  * (a Name object), and the link explanation String.
+*/
+
+
+public class LinkException extends NamingException {
+    /**
+     * Contains the part of the link that has been successfully resolved.
+     * It is a composite name and can be null.
+     * This field is initialized by the constructors.
+     * You should access and manipulate this field
+     * through its get and set methods.
+     * @serial
+     * @see #getLinkResolvedName
+     * @see #setLinkResolvedName
+     */
+    protected Name linkResolvedName;
+
+    /**
+      * Contains the object to which resolution of the part of the link was successful.
+      * Can be null. This field is initialized by the constructors.
+      * You should access and manipulate this field
+      * through its get and set methods.
+      * @serial
+      * @see #getLinkResolvedObj
+      * @see #setLinkResolvedObj
+      */
+    protected Object linkResolvedObj;
+
+    /**
+     * Contains the remaining link name that has not been resolved yet.
+     * It is a composite name and can be null.
+     * This field is initialized by the constructors.
+     * You should access and manipulate this field
+     * through its get and set methods.
+     * @serial
+     * @see #getLinkRemainingName
+     * @see #setLinkRemainingName
+     */
+    protected Name linkRemainingName;
+
+    /**
+     * Contains the exception of why resolution of the link failed.
+     * Can be null. This field is initialized by the constructors.
+     * You should access and manipulate this field
+     * through its get and set methods.
+     * @serial
+     * @see #getLinkExplanation
+     * @see #setLinkExplanation
+     */
+    protected String linkExplanation;
+
+    /**
+      * Constructs a new instance of LinkException with an explanation.
+      * All the other fields are initialized to null.
+      * @param  explanation     A possibly null string containing additional
+      *                         detail about this exception.
+      * @see java.lang.Throwable#getMessage
+      */
+    public LinkException(String explanation) {
+        super(explanation);
+        linkResolvedName = null;
+        linkResolvedObj = null;
+        linkRemainingName = null;
+        linkExplanation = null;
+    }
+
+    /**
+      * Constructs a new instance of LinkException.
+      * All the non-link-related and link-related fields are initialized to null.
+      */
+    public LinkException() {
+        super();
+        linkResolvedName = null;
+        linkResolvedObj = null;
+        linkRemainingName = null;
+        linkExplanation = null;
+    }
+
+    /**
+     * Retrieves the leading portion of the link name that was resolved
+     * successfully.
+     *
+     * @return The part of the link name that was resolved successfully.
+     *          It is a composite name. It can be null, which means
+     *          the link resolved name field has not been set.
+     * @see #getLinkResolvedObj
+     * @see #setLinkResolvedName
+     */
+    public Name getLinkResolvedName() {
+        return this.linkResolvedName;
+    }
+
+    /**
+     * Retrieves the remaining unresolved portion of the link name.
+     * @return The part of the link name that has not been resolved.
+     *          It is a composite name. It can be null, which means
+     *          the link remaining name field has not been set.
+     * @see #setLinkRemainingName
+     */
+    public Name getLinkRemainingName() {
+        return this.linkRemainingName;
+    }
+
+    /**
+     * Retrieves the object to which resolution was successful.
+     * This is the object to which the resolved link name is bound.
+     *
+     * @return The possibly null object that was resolved so far.
+     * If null, it means the link resolved object field has not been set.
+     * @see #getLinkResolvedName
+     * @see #setLinkResolvedObj
+     */
+    public Object getLinkResolvedObj() {
+        return this.linkResolvedObj;
+    }
+
+    /**
+      * Retrieves the explanation associated with the problem encountered
+      * when resolving a link.
+      *
+      * @return The possibly null detail string explaining more about the problem
+      * with resolving a link.
+      *         If null, it means there is no
+      *         link detail message for this exception.
+      * @see #setLinkExplanation
+      */
+    public String getLinkExplanation() {
+        return this.linkExplanation;
+    }
+
+    /**
+      * Sets the explanation associated with the problem encountered
+      * when resolving a link.
+      *
+      * @param msg The possibly null detail string explaining more about the problem
+      * with resolving a link. If null, it means no detail will be recorded.
+      * @see #getLinkExplanation
+      */
+    public void setLinkExplanation(String msg) {
+        this.linkExplanation = msg;
+    }
+
+    /**
+     * Sets the resolved link name field of this exception.
+     *<p>
+     * <tt>name</tt> is a composite name. If the intent is to set
+     * this field using a compound name or string, you must
+     * "stringify" the compound name, and create a composite
+     * name with a single component using the string. You can then
+     * invoke this method using the resulting composite name.
+     *<p>
+     * A copy of <code>name</code> is made and stored.
+     * Subsequent changes to <code>name</code> do not
+     * affect the copy in this NamingException and vice versa.
+     *
+     *
+     * @param name The name to set resolved link name to. This can be null.
+     *          If null, it sets the link resolved name field to null.
+     * @see #getLinkResolvedName
+     */
+    public void setLinkResolvedName(Name name) {
+        if (name != null) {
+            this.linkResolvedName = (Name)(name.clone());
+        } else {
+            this.linkResolvedName = null;
+        }
+    }
+
+    /**
+     * Sets the remaining link name field of this exception.
+     *<p>
+     * <tt>name</tt> is a composite name. If the intent is to set
+     * this field using a compound name or string, you must
+     * "stringify" the compound name, and create a composite
+     * name with a single component using the string. You can then
+     * invoke this method using the resulting composite name.
+     *<p>
+     * A copy of <code>name</code> is made and stored.
+     * Subsequent changes to <code>name</code> do not
+     * affect the copy in this NamingException and vice versa.
+     *
+     * @param name The name to set remaining link name to. This can be null.
+     *  If null, it sets the remaining name field to null.
+     * @see #getLinkRemainingName
+     */
+    public void setLinkRemainingName(Name name) {
+        if (name != null)
+            this.linkRemainingName = (Name)(name.clone());
+        else
+            this.linkRemainingName = null;
+    }
+
+    /**
+     * Sets the link resolved object field of this exception.
+     * This indicates the last successfully resolved object of link name.
+     * @param obj The object to set link resolved object to. This can be null.
+     *            If null, the link resolved object field is set to null.
+     * @see #getLinkResolvedObj
+     */
+    public void setLinkResolvedObj(Object obj) {
+        this.linkResolvedObj = obj;
+    }
+
+    /**
+     * Generates the string representation of this exception.
+     * This string consists of the NamingException information plus
+     * the link's remaining name.
+     * This string is used for debugging and not meant to be interpreted
+     * programmatically.
+     * @return The non-null string representation of this link exception.
+     */
+    public String toString() {
+        return super.toString() + "; Link Remaining Name: '" +
+            this.linkRemainingName + "'";
+    }
+
+    /**
+     * Generates the string representation of this exception.
+     * This string consists of the NamingException information plus
+     * the additional information of resolving the link.
+     * If 'detail' is true, the string also contains information on
+     * the link resolved object. If false, this method is the same
+     * as the form of toString() that accepts no parameters.
+     * This string is used for debugging and not meant to be interpreted
+     * programmatically.
+     *
+     * @param   detail  If true, add information about the link resolved
+     *                  object.
+     * @return The non-null string representation of this link exception.
+     */
+    public String toString(boolean detail) {
+        if (!detail || this.linkResolvedObj == null)
+            return this.toString();
+
+        return this.toString() + "; Link Resolved Object: " +
+            this.linkResolvedObj;
+    }
+
+    /**
+     * Use serialVersionUID from JNDI 1.1.1 for interoperability
+     */
+    private static final long serialVersionUID = -7967662604076777712L;
+};