The DOMResult.java Java example source code
/*
* Copyright (c) 2000, 2005, 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
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*/
package javax.xml.transform.dom;
import javax.xml.transform.Result;
import org.w3c.dom.Node;
/**
* <p>Acts as a holder for a transformation result tree in the form of a Document Object Model (DOM) tree.
*
* <p>If no output DOM source is set, the transformation will create a Document node as the holder for the result of the transformation,
* which may be retrieved with {@link #getNode()}.</p>
*
* @author <a href="Jeff.Suttor@Sun.com">Jeff Suttor
*/
public class DOMResult implements Result {
/** <p>If {@link javax.xml.transform.TransformerFactory#getFeature}
* returns <code>true when passed this value as an argument,
* the <code>Transformer supports Result output of this type.
*/
public static final String FEATURE = "http://javax.xml.transform.dom.DOMResult/feature";
/**
* <p>Zero-argument default constructor.
*
* <p>node,
* <code>siblingNode and
* <code>systemId
* will be set to <code>null.
*/
public DOMResult() {
setNode(null);
setNextSibling(null);
setSystemId(null);
}
/**
* <p>Use a DOM node to create a new output target.
*
* <p>In practice, the node should be
* a {@link org.w3c.dom.Document} node,
* a {@link org.w3c.dom.DocumentFragment} node, or
* a {@link org.w3c.dom.Element} node.
* In other words, a node that accepts children.</p>
*
* <p>siblingNode and
* <code>systemId
* will be set to <code>null.
*
* @param node The DOM node that will contain the result tree.
*/
public DOMResult(Node node) {
setNode(node);
setNextSibling(null);
setSystemId(null);
}
/**
* <p>Use a DOM node to create a new output target with the specified System ID.
*
* <p>In practice, the node should be
* a {@link org.w3c.dom.Document} node,
* a {@link org.w3c.dom.DocumentFragment} node, or
* a {@link org.w3c.dom.Element} node.
* In other words, a node that accepts children.</p>
*
* <p>siblingNode will be set to null.
*
* @param node The DOM node that will contain the result tree.
* @param systemId The system identifier which may be used in association with this node.
*/
public DOMResult(Node node, String systemId) {
setNode(node);
setNextSibling(null);
setSystemId(systemId);
}
/**
* <p>Use a DOM node to create a new output target specifying the child node where the result nodes should be inserted before.
*
* <p>In practice, node and nextSibling should be
* a {@link org.w3c.dom.Document} node,
* a {@link org.w3c.dom.DocumentFragment} node, or
* a {@link org.w3c.dom.Element} node.
* In other words, a node that accepts children.</p>
*
* <p>Use nextSibling to specify the child node
* where the result nodes should be inserted before.
* If <code>nextSibling is not a sibling of node,
* then an <code>IllegalArgumentException is thrown.
* If <code>node is null and nextSibling is not null,
* then an <code>IllegalArgumentException is thrown.
* If <code>nextSibling is null,
* then the behavior is the same as calling {@link #DOMResult(Node node)},
* i.e. append the result nodes as the last child of the specified <code>node.
*
* <p>systemId will be set to null.
*
* @param node The DOM node that will contain the result tree.
* @param nextSibling The child node where the result nodes should be inserted before.
*
* @throws IllegalArgumentException If <code>nextSibling is not a sibling of node or
* <code>node is null and nextSibling
* is not <code>null.
*
* @since 1.5
*/
public DOMResult(Node node, Node nextSibling) {
// does the corrent parent/child relationship exist?
if (nextSibling != null) {
// cannot be a sibling of a null node
if (node == null) {
throw new IllegalArgumentException("Cannot create a DOMResult when the nextSibling is contained by the \"null\" node.");
}
// nextSibling contained by node?
if ((node.compareDocumentPosition(nextSibling)&Node.DOCUMENT_POSITION_CONTAINED_BY)==0) {
throw new IllegalArgumentException("Cannot create a DOMResult when the nextSibling is not contained by the node.");
}
}
setNode(node);
setNextSibling(nextSibling);
setSystemId(null);
}
/**
* <p>Use a DOM node to create a new output target specifying the child node where the result nodes should be inserted before and
* the specified System ID.</p>
*
* <p>In practice, node and nextSibling should be
* a {@link org.w3c.dom.Document} node,
* a {@link org.w3c.dom.DocumentFragment} node, or a
* {@link org.w3c.dom.Element} node.
* In other words, a node that accepts children.</p>
*
* <p>Use nextSibling to specify the child node
* where the result nodes should be inserted before.
* If <code>nextSibling is not a sibling of node,
* then an <code>IllegalArgumentException is thrown.
* If <code>node is null and nextSibling is not null,
* then an <code>IllegalArgumentException is thrown.
* If <code>nextSibling is null,
* then the behavior is the same as calling {@link #DOMResult(Node node, String systemId)},
* i.e. append the result nodes as the last child of the specified node and use the specified System ID.</p>
*
* @param node The DOM node that will contain the result tree.
* @param nextSibling The child node where the result nodes should be inserted before.
* @param systemId The system identifier which may be used in association with this node.
*
* @throws IllegalArgumentException If <code>nextSibling is not a
* sibling of <code>node or
* <code>node is null and nextSibling
* is not <code>null.
*
* @since 1.5
*/
public DOMResult(Node node, Node nextSibling, String systemId) {
// does the corrent parent/child relationship exist?
if (nextSibling != null) {
// cannot be a sibling of a null node
if (node == null) {
throw new IllegalArgumentException("Cannot create a DOMResult when the nextSibling is contained by the \"null\" node.");
}
// nextSibling contained by node?
if ((node.compareDocumentPosition(nextSibling)&Node.DOCUMENT_POSITION_CONTAINED_BY)==0) {
throw new IllegalArgumentException("Cannot create a DOMResult when the nextSibling is not contained by the node.");
}
}
setNode(node);
setNextSibling(nextSibling);
setSystemId(systemId);
}
/**
* <p>Set the node that will contain the result DOM tree.
*
* <p>In practice, the node should be
* a {@link org.w3c.dom.Document} node,
* a {@link org.w3c.dom.DocumentFragment} node, or
* a {@link org.w3c.dom.Element} node.
* In other words, a node that accepts children.</p>
*
* <p>An IllegalStateException is thrown if
* <code>nextSibling is not null and
* <code>node is not a parent of nextSibling.
* An <code>IllegalStateException is thrown if node is null and
* <code>nextSibling is not null.
*
* @param node The node to which the transformation will be appended.
*
* @throws IllegalStateException If <code>nextSibling is not
* <code>null and
* <code>nextSibling is not a child of node or
* <code>node is null and
* <code>nextSibling is not null.
*/
public void setNode(Node node) {
// does the corrent parent/child relationship exist?
if (nextSibling != null) {
// cannot be a sibling of a null node
if (node == null) {
throw new IllegalStateException("Cannot create a DOMResult when the nextSibling is contained by the \"null\" node.");
}
// nextSibling contained by node?
if ((node.compareDocumentPosition(nextSibling)&Node.DOCUMENT_POSITION_CONTAINED_BY)==0) {
throw new IllegalArgumentException("Cannot create a DOMResult when the nextSibling is not contained by the node.");
}
}
this.node = node;
}
/**
* <p>Get the node that will contain the result DOM tree.
*
* <p>If no node was set via
* {@link #DOMResult(Node node)},
* {@link #DOMResult(Node node, String systeId)},
* {@link #DOMResult(Node node, Node nextSibling)},
* {@link #DOMResult(Node node, Node nextSibling, String systemId)} or
* {@link #setNode(Node node)},
* then the node will be set by the transformation, and may be obtained from this method once the transformation is complete.
* Calling this method before the transformation will return <code>null.
*
* @return The node to which the transformation will be appended.
*/
public Node getNode() {
return node;
}
/**
* <p>Set the child node before which the result nodes will be inserted.
*
* <p>Use nextSibling to specify the child node
* before which the result nodes should be inserted.
* If <code>nextSibling is not a descendant of node,
* then an <code>IllegalArgumentException is thrown.
* If <code>node is null and nextSibling is not null,
* then an <code>IllegalStateException is thrown.
* If <code>nextSibling is null,
* then the behavior is the same as calling {@link #DOMResult(Node node)},
* i.e. append the result nodes as the last child of the specified <code>node.
*
* @param nextSibling The child node before which the result nodes will be inserted.
*
* @throws IllegalArgumentException If <code>nextSibling is not a
* descendant of <code>node.
* @throws IllegalStateException If <code>node is null
* and <code>nextSibling is not null.
*
* @since 1.5
*/
public void setNextSibling(Node nextSibling) {
// does the corrent parent/child relationship exist?
if (nextSibling != null) {
// cannot be a sibling of a null node
if (node == null) {
throw new IllegalStateException("Cannot create a DOMResult when the nextSibling is contained by the \"null\" node.");
}
// nextSibling contained by node?
if ((node.compareDocumentPosition(nextSibling)&Node.DOCUMENT_POSITION_CONTAINED_BY)==0) {
throw new IllegalArgumentException("Cannot create a DOMResult when the nextSibling is not contained by the node.");
}
}
this.nextSibling = nextSibling;
}
/**
* <p>Get the child node before which the result nodes will be inserted.
*
* <p>If no node was set via
* {@link #DOMResult(Node node, Node nextSibling)},
* {@link #DOMResult(Node node, Node nextSibling, String systemId)} or
* {@link #setNextSibling(Node nextSibling)},
* then <code>null will be returned.
*
* @return The child node before which the result nodes will be inserted.
*
* @since 1.5
*/
public Node getNextSibling() {
return nextSibling;
}
/**
* <p>Set the systemId that may be used in association with the node.
*
* @param systemId The system identifier as a URI string.
*/
public void setSystemId(String systemId) {
this.systemId = systemId;
}
/**
* <p>Get the System Identifier.
*
* <p>If no System ID was set via
* {@link #DOMResult(Node node, String systemId)},
* {@link #DOMResult(Node node, Node nextSibling, String systemId)} or
* {@link #setSystemId(String systemId)},
* then <code>null will be returned.
*
* @return The system identifier.
*/
public String getSystemId() {
return systemId;
}
//////////////////////////////////////////////////////////////////////
// Internal state.
//////////////////////////////////////////////////////////////////////
/**
* <p>The node to which the transformation will be appended.
*/
private Node node = null;
/**
* <p>The child node before which the result nodes will be inserted.
*
* @since 1.5
*/
private Node nextSibling = null;
/**
* <p>The System ID that may be used in association with the node.
*/
private String systemId = null;
}
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