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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// $Id: DOMResult.java 569995 2007-08-27 04:31:06Z mrglavas $
package javax.xml.transform.dom;
import javax.xml.transform.Result;
import org.w3c.dom.Node;
/**
* Acts as a holder for a transformation result tree in the form of a Document Object Model (DOM) tree.
*
* 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()}.
*
* @author Jeff Suttor
* @version $Revision: 569995 $, $Date: 2007-08-27 00:31:06 -0400 (Mon, 27 Aug 2007) $
*/
public class DOMResult implements Result {
/** If {@link javax.xml.transform.TransformerFactory#getFeature}
* returns true when passed this value as an argument,
* the Transformer supports Result output of this type.
*/
public static final String FEATURE = "http://javax.xml.transform.dom.DOMResult/feature";
/**
* Zero-argument default constructor.
*
* node,
* siblingNode and
* systemId
* will be set to null.
*/
public DOMResult() {
setNode(null);
setNextSibling(null);
setSystemId(null);
}
/**
* Use a DOM node to create a new output target.
*
* 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.
*
* siblingNode and
* systemId
* will be set to null.
*
* @param node The DOM node that will contain the result tree.
*/
public DOMResult(Node node) {
setNode(node);
setNextSibling(null);
setSystemId(null);
}
/**
* Use a DOM node to create a new output target with the specified System ID.
*
*
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.
*
* 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);
}
/**
* Use a DOM node to create a new output target specifying the child node where the result nodes should be inserted before.
*
* 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.
*
* Use nextSibling to specify the child node
* where the result nodes should be inserted before.
* If nextSibling is not a sibling of node,
* then an IllegalArgumentException is thrown.
* If node is null and nextSibling is not null,
* then an IllegalArgumentException is thrown.
* If 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 node.
*
* 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 nextSibling is not a sibling of node.
* @throws IllegalArgumentException If node is null and nextSibling is not 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);
}
/**
* 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.
*
* 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.
*
* Use nextSibling to specify the child node
* where the result nodes should be inserted before.
* If nextSibling is not a sibling of node,
* then an IllegalArgumentException is thrown.
* If node is null and nextSibling is not null,
* then an IllegalArgumentException is thrown.
* If 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.
*
* @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 nextSibling is not a sibling of node.
* @throws IllegalArgumentException If node is null and nextSibling is not null.
*
* @since 1.5
*/
public DOMResult(Node node, Node nextSibling, String systemId) {
// does the current 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);
}
/**
* Set the node that will contain the result DOM tree.
*
*
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.
*
* An IllegalStateException is thrown if nextSibling is not null and
* node is not a parent of nextSibling.
* An IllegalStateException is thrown if node is null and
* nextSibling is not null.
*
* @param node The node to which the transformation will be appended.
*
* @throws IllegalStateException If nextSibling is not null and
* nextSibling is not a child of node.
* @throws IllegalStateException If node is null and
* 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;
}
/**
* Get the node that will contain the result DOM tree.
*
* 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 null.
*
* @return The node to which the transformation will be appended.
*/
public Node getNode() {
return node;
}
/**
* Set the child node before which the result nodes will be inserted.
*
* Use nextSibling to specify the child node
* before which the result nodes should be inserted.
* If nextSibling is not a descendant of node,
* then an IllegalArgumentException is thrown.
* If node is null and nextSibling is not null,
* then an IllegalStateException is thrown.
* If 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 node.
*
* @param nextSibling The child node before which the result nodes will be inserted.
*
* @throws IllegalArgumentException If nextSibling is not a descendant of node.
* @throws IllegalStateException If node is null and 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;
}
/**
* Get the child node before which the result nodes will be inserted.
*
* 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 null will be returned.
*
* @return The child node before which the result nodes will be inserted.
*
* @since 1.5
*/
public Node getNextSibling() {
return nextSibling;
}
/**
* 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;
}
/**
* Get the System Identifier.
*
* 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 null will be returned.
*
* @return The system identifier.
*/
public String getSystemId() {
return systemId;
}
//////////////////////////////////////////////////////////////////////
// Internal state.
//////////////////////////////////////////////////////////////////////
/**
* The node to which the transformation will be appended.
*/
private Node node = null;
/**
* The child node before which the result nodes will be inserted.
*
* @since 1.5
*/
private Node nextSibling = null;
/**
* The System ID that may be used in association with the node.
*/
private String systemId = null;
}