--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/NGSrich_0.5.5/src/org/jdom/Content.java	Mon Nov 21 08:12:19 2011 -0500
@@ -0,0 +1,192 @@
+/*--
+
+ $Id: Content.java,v 1.6 2007/11/10 05:28:58 jhunter Exp $
+
+ Copyright (C) 2007 Jason Hunter & Brett McLaughlin.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions, and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions, and the disclaimer that follows
+    these conditions in the documentation and/or other materials
+    provided with the distribution.
+
+ 3. The name "JDOM" must not be used to endorse or promote products
+    derived from this software without prior written permission.  For
+    written permission, please contact <request_AT_jdom_DOT_org>.
+
+ 4. Products derived from this software may not be called "JDOM", nor
+    may "JDOM" appear in their name, without prior written permission
+    from the JDOM Project Management <request_AT_jdom_DOT_org>.
+
+ In addition, we request (but do not require) that you include in the
+ end-user documentation provided with the redistribution and/or in the
+ software itself an acknowledgement equivalent to the following:
+     "This product includes software developed by the
+      JDOM Project (http://www.jdom.org/)."
+ Alternatively, the acknowledgment may be graphical using the logos
+ available at http://www.jdom.org/images/logos.
+
+ THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED.  IN NO EVENT SHALL THE JDOM AUTHORS OR THE PROJECT
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGE.
+
+ This software consists of voluntary contributions made by many
+ individuals on behalf of the JDOM Project and was originally
+ created by Jason Hunter <jhunter_AT_jdom_DOT_org> and
+ Brett McLaughlin <brett_AT_jdom_DOT_org>.  For more information
+ on the JDOM Project, please see <http://www.jdom.org/>.
+
+ */
+
+package org.jdom;
+
+import java.io.*;
+
+/**
+ * Superclass for JDOM objects which can be legal child content
+ * of {@link org.jdom.Parent} nodes.
+ *
+ * @see org.jdom.Comment
+ * @see org.jdom.DocType
+ * @see org.jdom.Element
+ * @see org.jdom.EntityRef
+ * @see org.jdom.Parent
+ * @see org.jdom.ProcessingInstruction
+ * @see org.jdom.Text
+ *
+ * @author Bradley S. Huffman
+ * @author Jason Hunter
+ * @version $Revision: 1.6 $, $Date: 2007/11/10 05:28:58 $
+ */
+public abstract class Content implements Cloneable, Serializable {
+
+    protected Parent parent = null;
+
+    protected Content() {}
+
+    /**
+     * Detaches this child from its parent or does nothing if the child
+     * has no parent.
+     *
+     * @return this child detached
+     */
+    public Content detach() {
+        if (parent != null) {
+            parent.removeContent(this);
+        }
+        return this;
+    }
+
+    /**
+     * Return this child's parent, or null if this child is currently
+     * not attached. The parent can be either an {@link Element}
+     * or a {@link Document}.
+     *
+     * @return this child's parent or null if none
+     */
+    public Parent getParent() {
+        return parent;
+    }
+
+    /**
+     * A convenience method that returns any parent element for this element,
+     * or null if the element is unattached or is a root element.  This was the
+     * original behavior of getParent() in JDOM Beta 9 which began returning
+     * Parent in Beta 10.  This method provides a convenient upgrade path for
+     * JDOM Beta 10 and 1.0 users.
+     *
+     * @return the containing Element or null if unattached or a root element
+     */
+    public Element getParentElement() {
+        Parent parent = getParent();
+        return (Element) ((parent instanceof Element) ? parent : null);
+    }
+
+    /**
+     * Sets the parent of this Content. The caller is responsible for removing
+     * any pre-existing parentage.
+     *
+     * @param  parent              new parent element
+     * @return                     the target element
+     */
+    protected Content setParent(Parent parent) {
+        this.parent = parent;
+        return this;
+    }
+
+    /**
+     * Return this child's owning document or null if the branch containing
+     * this child is currently not attached to a document.
+     *
+     * @return this child's owning document or null if none
+     */
+    public Document getDocument() {
+        if (parent == null) return null;
+        return parent.getDocument();
+    }
+
+
+    /**
+     * Returns the XPath 1.0 string value of this child.
+     *
+     * @return xpath string value of this child.
+     */
+    public abstract String getValue();
+
+    /**
+     * Returns a deep, unattached copy of this child and its descendants
+     * detached from any parent or document.
+     *
+     * @return a detached deep copy of this child and descendants
+     */
+    public Object clone() {
+        try {
+            Content c = (Content)super.clone();
+            c.parent = null;
+            return c;
+        } catch (CloneNotSupportedException e) {
+            //Can not happen ....
+            //e.printStackTrace();
+            return null;
+        }
+    }
+
+    /**
+     * This tests for equality of this Content object to the supplied object.
+     * Content items are considered equal only if they are referentially equal
+     * (i&#46;e&#46; the same object).  User code may choose to compare objects
+     * based on their properties instead.
+     *
+     * @param ob <code>Object</code> to compare to.
+     * @return <code>boolean</code> - whether the <code>Content</code> is
+     *         equal to the supplied <code>Object</code>.
+     */
+    public final boolean equals(Object ob) {
+        return (ob == this);
+    }
+
+    /**
+     * This returns the hash code for this <code>Content</code> item.
+     *
+     * @return <code>int</code> - hash code.
+     */
+    public final int hashCode() {
+        return super.hashCode();
+    }
+}