The XMLStreamWriter.java Java example source code
/*
* 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* Copyright (c) 2009 by Oracle Corporation. All Rights Reserved.
*/
package javax.xml.stream;
import javax.xml.namespace.NamespaceContext;
/**
* The XMLStreamWriter interface specifies how to write XML. The XMLStreamWriter does
* not perform well formedness checking on its input. However
* the writeCharacters method is required to escape & , < and >
* For attribute values the writeAttribute method will escape the
* above characters plus " to ensure that all character content
* and attribute values are well formed.
*
* Each NAMESPACE
* and ATTRIBUTE must be individually written.
*
* <table border="1" cellpadding="2" cellspacing="0">
* <thead>
* <tr>
* <th colspan="5">XML Namespaces, javax.xml.stream.isRepairingNamespaces and write method behaviour
* </tr>
* <tr>
* <th>Method
* <th colspan="2">isRepairingNamespaces == true
* <th colspan="2">isRepairingNamespaces == false
* </tr>
* <tr>
* <th>
* <th>namespaceURI bound
* <th>namespaceURI unbound
* <th>namespaceURI bound
* <th>namespaceURI unbound
* </tr>
* </thead>
*
* <tbody>
* <tr>
* <th>writeAttribute(namespaceURI, localName, value)
* <!-- isRepairingNamespaces == true -->
* <td>
* <!-- namespaceURI bound -->
* prefix:localName="value" <sup>[1]
* </td>
* <td>
* <!-- namespaceURI unbound -->
* xmlns:{generated}="namespaceURI" {generated}:localName="value"
* </td>
* <!-- isRepairingNamespaces == false -->
* <td>
* <!-- namespaceURI bound -->
* prefix:localName="value" <sup>[1]
* </td>
* <td>
* <!-- namespaceURI unbound -->
* <code>XMLStreamException
* </td>
* </tr>
*
* <tr>
* <th>writeAttribute(prefix, namespaceURI, localName, value)
* <!-- isRepairingNamespaces == true -->
* <td>
* <!-- namespaceURI bound -->
* bound to same prefix:<br />
* prefix:localName="value" <sup>[1]
* <br />
* bound to different prefix:<br />
* xmlns:{generated}="namespaceURI" {generated}:localName="value"
* </td>
* <td>
* <!-- namespaceURI unbound -->
* xmlns:prefix="namespaceURI" prefix:localName="value" <sup>[3]
* </td>
* <!-- isRepairingNamespaces == false -->
* <td>
* <!-- namespaceURI bound -->
* bound to same prefix:<br />
* prefix:localName="value" <sup>[1][2]
* <br />
* bound to different prefix:<br />
* <code>XMLStreamException[2]
* </td>
* <td>
* <!-- namespaceURI unbound -->
* xmlns:prefix="namespaceURI" prefix:localName="value" <sup>[2][5]
* </td>
* </tr>
*
* <tr>
* <th>writeStartElement(namespaceURI, localName)
* <br />
* <code>writeEmptyElement(namespaceURI, localName)
* <!-- isRepairingNamespaces == true -->
* <td >
* <!-- namespaceURI bound -->
* <prefix:localName> <sup>[1]
* </td>
* <td>
* <!-- namespaceURI unbound -->
* <{generated}:localName xmlns:{generated}="namespaceURI">
* </td>
* <!-- isRepairingNamespaces == false -->
* <td>
* <!-- namespaceURI bound -->
* <prefix:localName> <sup>[1]
* </td>
* <td>
* <!-- namespaceURI unbound -->
* <code>XMLStreamException
* </td>
* </tr>
*
* <tr>
* <th>writeStartElement(prefix, localName, namespaceURI)
* <br />
* <code>writeEmptyElement(prefix, localName, namespaceURI)
* <!-- isRepairingNamespaces == true -->
* <td>
* <!-- namespaceURI bound -->
* bound to same prefix:<br />
* <prefix:localName> <sup>[1]
* <br />
* bound to different prefix:<br />
* <{generated}:localName xmlns:{generated}="namespaceURI">
* </td>
* <td>
* <!-- namespaceURI unbound -->
* <prefix:localName xmlns:prefix="namespaceURI"> <sup>[4]
* </td>
* <!-- isRepairingNamespaces == false -->
* <td>
* <!-- namespaceURI bound -->
* bound to same prefix:<br />
* <prefix:localName> <sup>[1]
* <br />
* bound to different prefix:<br />
* <code>XMLStreamException
* </td>
* <td>
* <!-- namespaceURI unbound -->
* <prefix:localName>
* </td>
* </tr>
* </tbody>
* <tfoot>
* <tr>
* <td colspan="5">
* Notes:
* <ul>
* <li>[1] if namespaceURI == default Namespace URI, then no prefix is written
* <li>[2] if prefix == "" || null && namespaceURI == "", then no prefix or Namespace declaration is generated or written
* <li>[3] if prefix == "" || null, then a prefix is randomly generated
* <li>[4] if prefix == "" || null, then it is treated as the default Namespace and no prefix is generated or written, an xmlns declaration is generated and written if the namespaceURI is unbound
* <li>[5] if prefix == "" || null, then it is treated as an invalid attempt to define the default Namespace and an XMLStreamException is thrown
* </ul>
* </td>
* </tr>
* </tfoot>
* </table>
*
* @version 1.0
* @author Copyright (c) 2009 by Oracle Corporation. All Rights Reserved.
* @see XMLOutputFactory
* @see XMLStreamReader
* @since 1.6
*/
public interface XMLStreamWriter {
/**
* Writes a start tag to the output. All writeStartElement methods
* open a new scope in the internal namespace context. Writing the
* corresponding EndElement causes the scope to be closed.
* @param localName local name of the tag, may not be null
* @throws XMLStreamException
*/
public void writeStartElement(String localName)
throws XMLStreamException;
/**
* Writes a start tag to the output
* @param namespaceURI the namespaceURI of the prefix to use, may not be null
* @param localName local name of the tag, may not be null
* @throws XMLStreamException if the namespace URI has not been bound to a prefix and
* javax.xml.stream.isRepairingNamespaces has not been set to true
*/
public void writeStartElement(String namespaceURI, String localName)
throws XMLStreamException;
/**
* Writes a start tag to the output
* @param localName local name of the tag, may not be null
* @param prefix the prefix of the tag, may not be null
* @param namespaceURI the uri to bind the prefix to, may not be null
* @throws XMLStreamException
*/
public void writeStartElement(String prefix,
String localName,
String namespaceURI)
throws XMLStreamException;
/**
* Writes an empty element tag to the output
* @param namespaceURI the uri to bind the tag to, may not be null
* @param localName local name of the tag, may not be null
* @throws XMLStreamException if the namespace URI has not been bound to a prefix and
* javax.xml.stream.isRepairingNamespaces has not been set to true
*/
public void writeEmptyElement(String namespaceURI, String localName)
throws XMLStreamException;
/**
* Writes an empty element tag to the output
* @param prefix the prefix of the tag, may not be null
* @param localName local name of the tag, may not be null
* @param namespaceURI the uri to bind the tag to, may not be null
* @throws XMLStreamException
*/
public void writeEmptyElement(String prefix, String localName, String namespaceURI)
throws XMLStreamException;
/**
* Writes an empty element tag to the output
* @param localName local name of the tag, may not be null
* @throws XMLStreamException
*/
public void writeEmptyElement(String localName)
throws XMLStreamException;
/**
* Writes string data to the output without checking for well formedness.
* The data is opaque to the XMLStreamWriter, i.e. the characters are written
* blindly to the underlying output. If the method cannot be supported
* in the currrent writing context the implementation may throw a
* UnsupportedOperationException. For example note that any
* namespace declarations, end tags, etc. will be ignored and could
* interfere with proper maintanence of the writers internal state.
*
* @param data the data to write
*/
// public void writeRaw(String data) throws XMLStreamException;
/**
* Writes an end tag to the output relying on the internal
* state of the writer to determine the prefix and local name
* of the event.
* @throws XMLStreamException
*/
public void writeEndElement()
throws XMLStreamException;
/**
* Closes any start tags and writes corresponding end tags.
* @throws XMLStreamException
*/
public void writeEndDocument()
throws XMLStreamException;
/**
* Close this writer and free any resources associated with the
* writer. This must not close the underlying output stream.
* @throws XMLStreamException
*/
public void close()
throws XMLStreamException;
/**
* Write any cached data to the underlying output mechanism.
* @throws XMLStreamException
*/
public void flush()
throws XMLStreamException;
/**
* Writes an attribute to the output stream without
* a prefix.
* @param localName the local name of the attribute
* @param value the value of the attribute
* @throws IllegalStateException if the current state does not allow Attribute writing
* @throws XMLStreamException
*/
public void writeAttribute(String localName, String value)
throws XMLStreamException;
/**
* Writes an attribute to the output stream
* @param prefix the prefix for this attribute
* @param namespaceURI the uri of the prefix for this attribute
* @param localName the local name of the attribute
* @param value the value of the attribute
* @throws IllegalStateException if the current state does not allow Attribute writing
* @throws XMLStreamException if the namespace URI has not been bound to a prefix and
* javax.xml.stream.isRepairingNamespaces has not been set to true
*/
public void writeAttribute(String prefix,
String namespaceURI,
String localName,
String value)
throws XMLStreamException;
/**
* Writes an attribute to the output stream
* @param namespaceURI the uri of the prefix for this attribute
* @param localName the local name of the attribute
* @param value the value of the attribute
* @throws IllegalStateException if the current state does not allow Attribute writing
* @throws XMLStreamException if the namespace URI has not been bound to a prefix and
* javax.xml.stream.isRepairingNamespaces has not been set to true
*/
public void writeAttribute(String namespaceURI,
String localName,
String value)
throws XMLStreamException;
/**
* Writes a namespace to the output stream
* If the prefix argument to this method is the empty string,
* "xmlns", or null this method will delegate to writeDefaultNamespace
*
* @param prefix the prefix to bind this namespace to
* @param namespaceURI the uri to bind the prefix to
* @throws IllegalStateException if the current state does not allow Namespace writing
* @throws XMLStreamException
*/
public void writeNamespace(String prefix, String namespaceURI)
throws XMLStreamException;
/**
* Writes the default namespace to the stream
* @param namespaceURI the uri to bind the default namespace to
* @throws IllegalStateException if the current state does not allow Namespace writing
* @throws XMLStreamException
*/
public void writeDefaultNamespace(String namespaceURI)
throws XMLStreamException;
/**
* Writes an xml comment with the data enclosed
* @param data the data contained in the comment, may be null
* @throws XMLStreamException
*/
public void writeComment(String data)
throws XMLStreamException;
/**
* Writes a processing instruction
* @param target the target of the processing instruction, may not be null
* @throws XMLStreamException
*/
public void writeProcessingInstruction(String target)
throws XMLStreamException;
/**
* Writes a processing instruction
* @param target the target of the processing instruction, may not be null
* @param data the data contained in the processing instruction, may not be null
* @throws XMLStreamException
*/
public void writeProcessingInstruction(String target,
String data)
throws XMLStreamException;
/**
* Writes a CData section
* @param data the data contained in the CData Section, may not be null
* @throws XMLStreamException
*/
public void writeCData(String data)
throws XMLStreamException;
/**
* Write a DTD section. This string represents the entire doctypedecl production
* from the XML 1.0 specification.
*
* @param dtd the DTD to be written
* @throws XMLStreamException
*/
public void writeDTD(String dtd)
throws XMLStreamException;
/**
* Writes an entity reference
* @param name the name of the entity
* @throws XMLStreamException
*/
public void writeEntityRef(String name)
throws XMLStreamException;
/**
* Write the XML Declaration. Defaults the XML version to 1.0, and the encoding to utf-8
* @throws XMLStreamException
*/
public void writeStartDocument()
throws XMLStreamException;
/**
* Write the XML Declaration. Defaults the XML version to 1.0
* @param version version of the xml document
* @throws XMLStreamException
*/
public void writeStartDocument(String version)
throws XMLStreamException;
/**
* Write the XML Declaration. Note that the encoding parameter does
* not set the actual encoding of the underlying output. That must
* be set when the instance of the XMLStreamWriter is created using the
* XMLOutputFactory
* @param encoding encoding of the xml declaration
* @param version version of the xml document
* @throws XMLStreamException If given encoding does not match encoding
* of the underlying stream
*/
public void writeStartDocument(String encoding,
String version)
throws XMLStreamException;
/**
* Write text to the output
* @param text the value to write
* @throws XMLStreamException
*/
public void writeCharacters(String text)
throws XMLStreamException;
/**
* Write text to the output
* @param text the value to write
* @param start the starting position in the array
* @param len the number of characters to write
* @throws XMLStreamException
*/
public void writeCharacters(char[] text, int start, int len)
throws XMLStreamException;
/**
* Gets the prefix the uri is bound to
* @return the prefix or null
* @throws XMLStreamException
*/
public String getPrefix(String uri)
throws XMLStreamException;
/**
* Sets the prefix the uri is bound to. This prefix is bound
* in the scope of the current START_ELEMENT / END_ELEMENT pair.
* If this method is called before a START_ELEMENT has been written
* the prefix is bound in the root scope.
* @param prefix the prefix to bind to the uri, may not be null
* @param uri the uri to bind to the prefix, may be null
* @throws XMLStreamException
*/
public void setPrefix(String prefix, String uri)
throws XMLStreamException;
/**
* Binds a URI to the default namespace
* This URI is bound
* in the scope of the current START_ELEMENT / END_ELEMENT pair.
* If this method is called before a START_ELEMENT has been written
* the uri is bound in the root scope.
* @param uri the uri to bind to the default namespace, may be null
* @throws XMLStreamException
*/
public void setDefaultNamespace(String uri)
throws XMLStreamException;
/**
* Sets the current namespace context for prefix and uri bindings.
* This context becomes the root namespace context for writing and
* will replace the current root namespace context. Subsequent calls
* to setPrefix and setDefaultNamespace will bind namespaces using
* the context passed to the method as the root context for resolving
* namespaces. This method may only be called once at the start of
* the document. It does not cause the namespaces to be declared.
* If a namespace URI to prefix mapping is found in the namespace
* context it is treated as declared and the prefix may be used
* by the StreamWriter.
* @param context the namespace context to use for this writer, may not be null
* @throws XMLStreamException
*/
public void setNamespaceContext(NamespaceContext context)
throws XMLStreamException;
/**
* Returns the current namespace context.
* @return the current NamespaceContext
*/
public NamespaceContext getNamespaceContext();
/**
* Get the value of a feature/property from the underlying implementation
* @param name The name of the property, may not be null
* @return The value of the property
* @throws IllegalArgumentException if the property is not supported
* @throws NullPointerException if the name is null
*/
public Object getProperty(java.lang.String name) throws IllegalArgumentException;
}
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