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org.apache.axiom.om.impl.dom.TextImpl Maven / Gradle / Ivy
An implementation of the Axiom API that also implements DOM.
/*
* 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.
*/
package org.apache.axiom.om.impl.dom;
import org.apache.axiom.attachments.utils.DataHandlerUtils;
import org.apache.axiom.om.OMAttribute;
import org.apache.axiom.om.OMContainer;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMException;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNamespace;
import org.apache.axiom.om.OMNode;
import org.apache.axiom.om.OMText;
import org.apache.axiom.om.OMXMLParserWrapper;
import org.apache.axiom.om.impl.MTOMXMLStreamWriter;
import org.apache.axiom.om.impl.OMNamespaceImpl;
import org.apache.axiom.om.impl.builder.XOPBuilder;
import org.apache.axiom.om.util.TextHelper;
import org.apache.axiom.om.util.UUIDGenerator;
import org.w3c.dom.DOMException;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import java.io.IOException;
import java.io.InputStream;
public class TextImpl extends CharacterImpl implements Text, OMText {
private String mimeType;
private boolean optimize;
private boolean isBinary;
private String contentID = null;
protected OMNamespace textNS = null;
protected char[] charArray;
/**
* Field dataHandler contains the DataHandler. Declaring as Object to remove the dependency on
* Javax.activation.DataHandler
*/
private Object dataHandlerObject = null;
/** Field nameSpace is used when serializing Binary stuff as MTOM optimized. */
protected OMNamespace ns = null;
/** Field localName is used when serializing Binary stuff as MTOM optimized. */
protected String localName = "Include";
/** Field attribute is used when serializing Binary stuff as MTOM optimized. */
protected OMAttribute attribute;
/** Field nameSpace used when serializing Binary stuff as MTOM optimized. */
public static final OMNamespace XOP_NS = new OMNamespaceImpl(
"http://www.w3.org/2004/08/xop/include", "xop");
/**
* Creates a text node with the given text required by the OMDOMFactory. The owner document
* should be set properly when appending this to a DOM tree.
*
* @param text
*/
public TextImpl(String text, OMFactory factory) {
super(factory);
this.textValue = (text != null) ? new StringBuffer(text)
: new StringBuffer("");
this.done = true;
this.ns = XOP_NS;
}
/**
* @param contentID
* @param parent
* @param builder Used when the builder is encountered with a XOP:Include tag Stores a
* reference to the builder and the content-id. Supports deffered parsing of
* MIME messages
*/
public TextImpl(String contentID, OMContainer parent,
OMXMLParserWrapper builder, OMFactory factory) {
super((DocumentImpl) ((ParentNode) parent).getOwnerDocument(), factory);
this.contentID = contentID;
this.optimize = true;
this.isBinary = true;
this.done = true;
this.builder = builder;
this.ns = XOP_NS;
}
public TextImpl(String text, String mimeType, boolean optimize,
OMFactory factory) {
this(text, mimeType, optimize, true, factory);
}
public TextImpl(String text, String mimeType, boolean optimize,
boolean isBinary, OMFactory factory) {
this(text, factory);
this.mimeType = mimeType;
this.optimize = optimize;
this.isBinary = isBinary;
}
/**
* @param dataHandler
* @param optimize To send binary content. Created progrmatically.
*/
public TextImpl(DocumentImpl ownerNode, Object dataHandler, boolean optimize,
OMFactory factory) {
super(ownerNode, factory);
this.dataHandlerObject = dataHandler;
this.isBinary = true;
this.optimize = optimize;
done = true;
this.ns = XOP_NS;
}
/** @param ownerNode */
public TextImpl(DocumentImpl ownerNode, OMFactory factory) {
super(ownerNode, factory);
this.done = true;
this.ns = XOP_NS;
}
/**
* @param ownerNode
* @param value
*/
public TextImpl(DocumentImpl ownerNode, String value, OMFactory factory) {
super(ownerNode, value, factory);
this.done = true;
this.ns = XOP_NS;
}
public TextImpl(DocumentImpl ownerNode, char[] value, OMFactory factory) {
super(ownerNode, factory);
this.charArray = value;
this.done = true;
this.ns = XOP_NS;
}
/**
* @param ownerNode
* @param value
*/
public TextImpl(DocumentImpl ownerNode, String value, String mimeType,
boolean optimize, OMFactory factory) {
this(ownerNode, value, factory);
this.mimeType = mimeType;
this.optimize = optimize;
this.isBinary = true;
done = true;
}
public TextImpl(OMContainer parent, QName text, OMFactory factory) {
this(parent, text, OMNode.TEXT_NODE, factory);
}
public TextImpl(OMContainer parent, QName text, int nodeType,
OMFactory factory) {
this(((ElementImpl) parent).ownerNode, factory);
if (text != null) {
this.textNS =
((ElementImpl) parent).findNamespace(text.getNamespaceURI(), text.getPrefix());
} else {
}
this.textValue = new StringBuffer((text == null) ? "" : text.getLocalPart());
this.done = true;
}
/**
* Breaks this node into two nodes at the specified offset, keeping both in the tree as
* siblings. After being split, this node will contain all the content up to the offset point. A
* new node of the same type, which contains all the content at and after the offset point, is
* returned. If the original node had a parent node, the new node is inserted as the next
* sibling of the original node. When the offset is equal to the length of this node, the new
* node has no data.
*/
public Text splitText(int offset) throws DOMException {
if (this.isReadonly()) {
throw new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR,
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN,
"NO_MODIFICATION_ALLOWED_ERR", null));
}
if (offset < 0 || offset > this.textValue.length()) {
throw new DOMException(DOMException.INDEX_SIZE_ERR,
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN, "INDEX_SIZE_ERR",
null));
}
String newValue = this.textValue.substring(offset);
this.deleteData(offset, this.textValue.length());
TextImpl newText = (TextImpl) this.getOwnerDocument().createTextNode(
newValue);
if (this.parentNode != null) {
newText.setParent(this.parentNode);
}
this.insertSiblingAfter(newText);
return newText;
}
// /
// /org.w3c.dom.Node methods
// /
public String getNodeName() {
return "#text";
}
public short getNodeType() {
return Node.TEXT_NODE;
}
// /
// /OMNode methods
// /
/*
* (non-Javadoc)
*
* @see org.apache.axiom.om.OMNode#getType()
*/
public int getType() throws OMException {
return OMNode.TEXT_NODE;
}
/*
* (non-Javadoc)
*
* @see org.apache.axiom.om.OMNode#setType(int)
*/
public void setType(int nodeType) throws OMException {
// do not do anything here
// Its not clear why we should let someone change the type of a node
}
public void internalSerialize(XMLStreamWriter writer) throws XMLStreamException {
internalSerializeLocal(writer);
}
public void internalSerializeAndConsume(XMLStreamWriter writer)
throws XMLStreamException {
internalSerializeLocal(writer);
}
public boolean isOptimized() {
return this.optimize;
}
public void setOptimize(boolean value) {
this.optimize = value;
if (value) {
isBinary = true;
}
}
public void discard() throws OMException {
if (done) {
this.detach();
} else {
builder.discard((OMElement) this.parentNode);
}
}
/**
* Writes the relevant output.
*
* @param writer
* @throws XMLStreamException
*/
private void writeOutput(XMLStreamWriter writer) throws XMLStreamException {
int type = getType();
if (type == OMNode.TEXT_NODE || type == SPACE_NODE) {
writer.writeCharacters(this.getText());
} else if (type == OMNode.CDATA_SECTION_NODE) {
writer.writeCData(this.getText());
} else if (type == OMNode.ENTITY_REFERENCE_NODE) {
writer.writeEntityRef(this.getText());
}
}
public String getText() {
if (this.textNS != null) {
return getTextString();
} else if (this.charArray != null || this.textValue != null) {
return getTextFromProperPlace();
} else {
try {
return TextHelper.toString(getInputStream());
} catch (Exception e) {
throw new OMException(e);
}
}
}
public char[] getTextCharacters() {
return charArray != null ? charArray : this.textValue.toString()
.toCharArray();
}
public boolean isCharacters() {
return charArray != null;
}
private String getTextFromProperPlace() {
return charArray != null ? new String(charArray) : textValue.toString();
}
private String getTextString() {
if (textNS != null) {
String prefix = textNS.getPrefix();
if (prefix == null || "".equals(prefix)) {
return getTextFromProperPlace();
} else {
return prefix + ":" + getTextFromProperPlace();
}
}
return null;
}
public QName getTextAsQName() {
if (textNS != null) {
String prefix = textNS.getPrefix();
String name = textNS.getNamespaceURI();
if (prefix == null || "".equals(prefix)) {
return new QName(name, getTextFromProperPlace());
} else {
return new QName(textNS.getNamespaceURI(), getTextFromProperPlace(), prefix);
}
} else if (this.textValue != null || charArray != null) {
return new QName(getTextFromProperPlace());
} else {
try {
return new QName(TextHelper.toString(getInputStream()));
} catch (Exception e) {
throw new OMException(e);
}
}
}
public String getNodeValue() throws DOMException {
return this.getText();
}
public String getContentID() {
if (contentID == null) {
contentID = UUIDGenerator.getUUID() + "@apache.org";
}
return this.contentID;
}
public Object getDataHandler() {
/*
* this should return a DataHandler containing the binary data
* reperesented by the Base64 strings stored in OMText
*/
if ((textValue != null || charArray != null || textNS != null) & isBinary) {
String text = textNS == null ? getTextFromProperPlace() : getTextString();
return DataHandlerUtils
.getDataHandlerFromText(text, mimeType);
} else {
if (dataHandlerObject == null) {
if (contentID == null) {
throw new RuntimeException("ContentID is null");
}
dataHandlerObject = ((XOPBuilder) builder)
.getDataHandler(contentID);
}
return dataHandlerObject;
}
}
public java.io.InputStream getInputStream() throws OMException {
if (isBinary) {
if (dataHandlerObject == null) {
getDataHandler();
}
InputStream inStream;
javax.activation.DataHandler dataHandler =
(javax.activation.DataHandler) dataHandlerObject;
try {
inStream = dataHandler.getDataSource().getInputStream();
} catch (IOException e) {
throw new OMException(
"Cannot get InputStream from DataHandler." + e);
}
return inStream;
} else {
throw new OMException("Unsupported Operation");
}
}
private void internalSerializeLocal(XMLStreamWriter writer2)
throws XMLStreamException {
MTOMXMLStreamWriter writer = (MTOMXMLStreamWriter) writer2;
if (!this.isBinary) {
writeOutput(writer);
} else {
if (writer.isOptimized()) {
if (contentID == null) {
contentID = writer.getNextContentId();
}
// send binary as MTOM optimised
this.attribute = new AttrImpl(this.ownerNode, "href",
new NamespaceImpl("", ""),
"cid:" + getContentID(),
this.factory);
this.serializeStartpart(writer);
writer.writeOptimized(this);
writer.writeEndElement();
} else {
writer.writeCharacters(this.getText());
}
}
}
/*
* Methods to copy from OMSerialize utils.
*/
private void serializeStartpart(XMLStreamWriter writer)
throws XMLStreamException {
String nameSpaceName = XOP_NS.getNamespaceURI();
String writer_prefix = writer.getPrefix(nameSpaceName);
String prefix = XOP_NS.getPrefix();
if (writer_prefix != null) {
writer.writeStartElement(nameSpaceName, this
.getLocalName());
} else {
writer.writeStartElement(prefix, this.getLocalName(),
nameSpaceName);
writer.setPrefix(prefix, nameSpaceName);
}
// add the elements attribute "href"
serializeAttribute(this.attribute, writer);
// add the namespace
serializeNamespace(XOP_NS, writer);
}
/**
* Method serializeAttribute.
*
* @param attr
* @param writer
* @throws XMLStreamException
*/
static void serializeAttribute(OMAttribute attr, XMLStreamWriter writer)
throws XMLStreamException {
// first check whether the attribute is associated with a namespace
OMNamespace ns = attr.getNamespace();
String prefix;
String namespaceName;
if (ns != null) {
// add the prefix if it's availble
prefix = ns.getPrefix();
namespaceName = ns.getNamespaceURI();
if (prefix != null) {
writer.writeAttribute(prefix, namespaceName, attr
.getLocalName(), attr.getAttributeValue());
} else {
writer.writeAttribute(namespaceName, attr.getLocalName(), attr
.getAttributeValue());
}
} else {
writer
.writeAttribute(attr.getLocalName(), attr
.getAttributeValue());
}
}
/**
* Method serializeNamespace.
*
* @param namespace
* @param writer
* @throws XMLStreamException
*/
static void serializeNamespace(OMNamespace namespace, XMLStreamWriter writer)
throws XMLStreamException {
if (namespace != null) {
String uri = namespace.getNamespaceURI();
String ns_prefix = namespace.getPrefix();
writer.writeNamespace(ns_prefix, namespace.getNamespaceURI());
writer.setPrefix(ns_prefix, uri);
}
}
public Node cloneNode(boolean deep) {
TextImpl textImpl = new TextImpl(this.textValue.toString(), this.factory);
textImpl.setOwnerDocument(this.ownerNode);
return textImpl;
}
public String getLocalName() {
return this.localName;
}
/*
* DOM-Level 3 methods
*/
public String getWholeText() {
// TODO TODO
throw new UnsupportedOperationException("TODO");
}
public boolean isElementContentWhitespace() {
// TODO TODO
throw new UnsupportedOperationException("TODO");
}
public Text replaceWholeText(String arg0) throws DOMException {
// TODO TODO
throw new UnsupportedOperationException("TODO");
}
public String toString() {
return (this.textValue != null) ? textValue.toString() : "";
}
/* (non-Javadoc)
* @see org.apache.axiom.om.OMNode#buildAll()
*/
public void buildWithAttachments() {
this.build();
if (isOptimized()) {
this.getDataHandler();
}
}
public boolean isBinary() {
return isBinary;
}
/**
* Receiving binary can happen as either MTOM attachments or as Base64 Text In the case of Base64
* user has to explicitly specify that the content is binary, before calling getDataHandler(),
* getInputStream()....
*/
public void setBinary(boolean value) {
this.isBinary = value;
}
public OMNamespace getNamespace() {
return textNS;
}
}
