com.sun.xml.stream.buffer.stax.StreamWriterBufferCreator Maven / Gradle / Ivy
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/*
* Copyright (c) 2005, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.stream.buffer.stax;
import com.sun.xml.stream.buffer.MutableXMLStreamBuffer;
import org.jvnet.staxex.Base64Data;
import org.jvnet.staxex.NamespaceContextEx;
import org.jvnet.staxex.XMLStreamWriterEx;
import javax.activation.DataHandler;
import javax.xml.namespace.NamespaceContext;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import java.io.OutputStream;
/**
* {@link XMLStreamWriter} that fills {@link MutableXMLStreamBuffer}.
*
* TODO: need to retain all attributes/namespaces and then store all namespaces
* before the attributes. Currently it is necessary for the caller to ensure
* all namespaces are written before attributes and the caller must not intermix
* calls to the writeNamespace and writeAttribute methods.
*
*/
public class StreamWriterBufferCreator extends StreamBufferCreator implements XMLStreamWriterEx {
private final NamespaceContexHelper namespaceContext = new NamespaceContexHelper();
/**
* Nesting depth of the element.
* This field is ultimately used to keep track of the # of trees we created in
* the buffer.
*/
private int depth=0;
public StreamWriterBufferCreator() {
setXMLStreamBuffer(new MutableXMLStreamBuffer());
}
public StreamWriterBufferCreator(MutableXMLStreamBuffer buffer) {
setXMLStreamBuffer(buffer);
}
// XMLStreamWriter
public Object getProperty(String str) throws IllegalArgumentException {
return null; //return null for all the property names instead of
//throwing unsupported operation exception.
}
public void close() throws XMLStreamException {
}
public void flush() throws XMLStreamException {
}
public NamespaceContextEx getNamespaceContext() {
return namespaceContext;
}
public void setNamespaceContext(NamespaceContext namespaceContext) throws XMLStreamException {
/*
* It is really unclear from the JavaDoc how to implement this method.
*/
throw new UnsupportedOperationException();
}
public void setDefaultNamespace(String namespaceURI) throws XMLStreamException {
setPrefix("", namespaceURI);
}
public void setPrefix(String prefix, String namespaceURI) throws XMLStreamException {
namespaceContext.declareNamespace(prefix, namespaceURI);
}
public String getPrefix(String namespaceURI) throws XMLStreamException {
return namespaceContext.getPrefix(namespaceURI);
}
public void writeStartDocument() throws XMLStreamException {
writeStartDocument("", "");
}
public void writeStartDocument(String version) throws XMLStreamException {
writeStartDocument("", "");
}
public void writeStartDocument(String encoding, String version) throws XMLStreamException {
namespaceContext.resetContexts();
storeStructure(T_DOCUMENT);
}
public void writeEndDocument() throws XMLStreamException {
storeStructure(T_END);
}
public void writeStartElement(String localName) throws XMLStreamException {
namespaceContext.pushContext();
depth++;
final String defaultNamespaceURI = namespaceContext.getNamespaceURI("");
if (defaultNamespaceURI == null)
storeQualifiedName(T_ELEMENT_LN, null, null, localName);
else
storeQualifiedName(T_ELEMENT_LN, null, defaultNamespaceURI, localName);
}
public void writeStartElement(String namespaceURI, String localName) throws XMLStreamException {
namespaceContext.pushContext();
depth++;
final String prefix = namespaceContext.getPrefix(namespaceURI);
if (prefix == null) {
throw new XMLStreamException();
}
namespaceContext.pushContext();
storeQualifiedName(T_ELEMENT_LN, prefix, namespaceURI, localName);
}
public void writeStartElement(String prefix, String localName, String namespaceURI) throws XMLStreamException {
namespaceContext.pushContext();
depth++;
storeQualifiedName(T_ELEMENT_LN, prefix, namespaceURI, localName);
}
public void writeEmptyElement(String localName) throws XMLStreamException {
writeStartElement(localName);
writeEndElement();
}
public void writeEmptyElement(String namespaceURI, String localName) throws XMLStreamException {
writeStartElement(namespaceURI, localName);
writeEndElement();
}
public void writeEmptyElement(String prefix, String localName, String namespaceURI) throws XMLStreamException {
writeStartElement(prefix, localName, namespaceURI);
writeEndElement();
}
public void writeEndElement() throws XMLStreamException {
namespaceContext.popContext();
storeStructure(T_END);
if(--depth==0)
increaseTreeCount();
}
public void writeDefaultNamespace(String namespaceURI) throws XMLStreamException {
storeNamespaceAttribute(null, namespaceURI);
}
public void writeNamespace(String prefix, String namespaceURI) throws XMLStreamException {
if ("xmlns".equals(prefix))
prefix = null;
storeNamespaceAttribute(prefix, namespaceURI);
}
public void writeAttribute(String localName, String value) throws XMLStreamException {
storeAttribute(null, null, localName, "CDATA", value);
}
public void writeAttribute(String namespaceURI, String localName, String value) throws XMLStreamException {
final String prefix = namespaceContext.getPrefix(namespaceURI);
if (prefix == null) {
// TODO
throw new XMLStreamException();
}
writeAttribute(prefix, namespaceURI, localName, value);
}
public void writeAttribute(String prefix, String namespaceURI, String localName, String value) throws XMLStreamException {
storeAttribute(prefix, namespaceURI, localName, "CDATA", value);
}
public void writeCData(String data) throws XMLStreamException {
storeStructure(T_TEXT_AS_STRING);
storeContentString(data);
}
public void writeCharacters(String charData) throws XMLStreamException {
storeStructure(T_TEXT_AS_STRING);
storeContentString(charData);
}
public void writeCharacters(char[] buf, int start, int len) throws XMLStreamException {
storeContentCharacters(T_TEXT_AS_CHAR_ARRAY, buf, start, len);
}
public void writeComment(String str) throws XMLStreamException {
storeStructure(T_COMMENT_AS_STRING);
storeContentString(str);
}
public void writeDTD(String str) throws XMLStreamException {
// not support. just ignore.
}
public void writeEntityRef(String str) throws XMLStreamException {
storeStructure(T_UNEXPANDED_ENTITY_REFERENCE);
storeContentString(str);
}
public void writeProcessingInstruction(String target) throws XMLStreamException {
writeProcessingInstruction(target, "");
}
public void writeProcessingInstruction(String target, String data) throws XMLStreamException {
storeProcessingInstruction(target, data);
}
// XMLStreamWriterEx
public void writePCDATA(CharSequence charSequence) throws XMLStreamException {
if (charSequence instanceof Base64Data) {
storeStructure(T_TEXT_AS_OBJECT);
storeContentObject(((Base64Data)charSequence).clone());
} else {
writeCharacters(charSequence.toString());
}
}
public void writeBinary(byte[] bytes, int offset, int length, String endpointURL) throws XMLStreamException {
Base64Data d = new Base64Data();
byte b[] = new byte[length];
System.arraycopy(bytes, offset, b, 0, length);
d.set(b, length, null, true);
storeStructure(T_TEXT_AS_OBJECT);
storeContentObject(d);
}
public void writeBinary(DataHandler dataHandler) throws XMLStreamException {
Base64Data d = new Base64Data();
d.set(dataHandler);
storeStructure(T_TEXT_AS_OBJECT);
storeContentObject(d);
}
public OutputStream writeBinary(String endpointURL) throws XMLStreamException {
// TODO
throw new UnsupportedOperationException();
}
}