## net.sf.saxon.event
Class XMLEmitter

    java.lang.Object
      net.sf.saxon.event.Emitter
          net.sf.saxon.event.XMLEmitter

All Implemented Interfaces:
  Result, Receiver

Direct Known Subclasses:
  HTMLEmitter, MessageEmitter, MessageWarner, TEXTEmitter, XHTMLEmitter

    public class XMLEmitter

extends Emitter

XMLEmitter is an Emitter that generates XML output to a specified destination.

Constructor Summary
`XMLEmitter()`

Method Summary
`void` `attribute(int nameCode, int typeCode, CharSequence value, int locationId, int properties)` Notify an attribute.
`void` `characters(CharSequence chars, int locationId, int properties)` Character data.
`void` `close()` End of the document.
`void` `closeStartTag()`
`void` `comment(CharSequence chars, int locationId, int properties)` Handle a comment.
`void` `endDocument()` Notify the end of a document node
`void` `endElement()` End of an element.
`static void` `main(String[] params)`
`void` `namespace(int namespaceCode, int properties)` Notify a namespace.
`void` `open()` Start of the event stream.
`void` `processingInstruction(String target, CharSequence data, int locationId, int properties)` Handle a processing instruction.
`void` `startContent()` Notify the start of the content, that is, the completion of all attributes and namespaces.
`void` `startDocument(int properties)` Start of a document node.
`void` `startElement(int nameCode, int typeCode, int locationId, int properties)` Start of an element.
`void` `writeCharSequence(CharSequence s)` Write a CharSequence (without any escaping of special characters): various implementations
`void` `writeDeclaration()` Output the XML declaration

Methods inherited from class net.sf.saxon.event.Emitter
`getConfiguration, getOutputProperties, getOutputStream, getPipelineConfiguration, getSystemId, getWriter, setOutputProperties, setOutputStream, setPipelineConfiguration, setStreamResult, setSystemId, setUnparsedEntity, setWriter, usesWriter`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### XMLEmitter

    public XMLEmitter()

Method Detail

### open

    public void open()
              throws XPathException

  Start of the event stream. Nothing is done at this stage: the opening of the output file is deferred until some content is written to it.

  Throws:
    `XPathException`

### startDocument

    public void startDocument(int properties)
                       throws XPathException

  Start of a document node. Nothing is done at this stage: the opening of the output file is deferred until some content is written to it.

  Throws:
    `XPathException`

### endDocument

    public void endDocument()
                     throws XPathException

  Notify the end of a document node

  Throws:
    `XPathException`

### writeDeclaration

    public void writeDeclaration()
                          throws XPathException

  Output the XML declaration

  Throws:
    `XPathException`

### close

    public void close()
               throws XPathException

  End of the document.

  Throws:
    `XPathException`

### startElement

    public void startElement(int nameCode,
                             int typeCode,
                             int locationId,
                             int properties)
                      throws XPathException

  Start of an element. Output the start tag, escaping special characters.

  Parameters:
    `nameCode` - integer code identifying the name of the element within the name pool.
    `typeCode` - integer code identifying the element's type within the name pool. The value -1 indicates the default type, xs:untyped.
    `locationId` - an integer which can be interpreted using a `LocationProvider` to return information such as line number and system ID. If no location information is available, the value zero is supplied.
    `properties` - bit-significant properties of the element node. If there are no revelant properties, zero is supplied.
  Throws:
    `XPathException`

### namespace

    public void namespace(int namespaceCode,
                          int properties)
                   throws XPathException

  Description copied from interface: `Receiver`
  Notify a namespace. Namespaces are notified after the startElement event, and before any children for the element. The namespaces that are reported are only required to include those that are different from the parent element. The events represent namespace declarations and undeclarations rather than in-scope namespace nodes: an undeclaration is represented by a namespace code of zero. If the sequence of namespace events contains two A namespace must not conflict with any namespaces already used for element or attribute names.

  Parameters:
    `namespaceCode` - an integer: the top half is a prefix code, the bottom half a URI code. These may be translated into an actual prefix and URI using the name pool. A prefix code of zero represents the empty prefix (that is, the default namespace). A URI code of zero represents a URI of "", that is, a namespace undeclaration.
    `properties` - The most important property is REJECT_DUPLICATES. If this property is set, the namespace declaration will be rejected if it conflicts with a previous declaration of the same prefix. If the property is not set, the namespace declaration will be ignored if it conflicts with a previous declaration. This reflects the fact that when copying a tree, namespaces for child elements are emitted before the namespaces of their parent element. Unfortunately this conflicts with the XSLT rule for complex content construction, where the recovery action in the event of conflicts is to take the namespace that comes last. XSLT therefore doesn't recover from this error: it sets the REJECT_DUPLICATES flag, and this is treated as a hard error.
  Throws:
    `XPathException`

### attribute

    public void attribute(int nameCode,
                          int typeCode,
                          CharSequence value,
                          int locationId,
                          int properties)
                   throws XPathException

  Description copied from interface: `Receiver`
  Notify an attribute. Attributes are notified after the startElement event, and before any children. Namespaces and attributes may be intermingled.

  Parameters:
    `nameCode` - The name of the attribute, as held in the name pool
    `typeCode` - The type of the attribute, as held in the name pool. The additional bit NodeInfo.IS_DTD_TYPE may be set to indicate a DTD-derived type.
    `locationId` - an integer which can be interpreted using a `LocationProvider` to return information such as line number and system ID. If no location information is available, the value zero is supplied.
    `properties` - Bit significant value. The following bits are defined:
  DISABLE_ESCAPING
    Disable escaping for this attribute
  NO_SPECIAL_CHARACTERS
    Attribute value contains no special characters
  Throws:
    `XPathException`

### startContent

    public void startContent()
                      throws XPathException

  Description copied from interface: `Receiver`
  Notify the start of the content, that is, the completion of all attributes and namespaces. Note that the initial receiver of output from XSLT instructions will not receive this event, it has to detect it itself. Note that this event is reported for every element even if it has no attributes, no namespaces, and no content.

  Throws:
    `XPathException`

### closeStartTag

    public void closeStartTag()
                       throws XPathException

  Throws:
    `XPathException`

### endElement

    public void endElement()
                    throws XPathException

  End of an element.

  Throws:
    `XPathException`

### characters

    public void characters(CharSequence chars,
                           int locationId,
                           int properties)
                    throws XPathException

  Character data.

  Parameters:
    `chars` - The characters
    `locationId` - an integer which can be interpreted using a `LocationProvider` to return information such as line number and system ID. If no location information is available, the value zero is supplied.
    `properties` - Bit significant value. The following bits are defined:
  DISABLE_ESCAPING
    Disable escaping for this text node
  USE_CDATA
    Output as a CDATA section
  NO_SPECIAL_CHARACTERS
    Value contains no special characters
  WHITESPACE
    Text is all whitespace
  Throws:
    `XPathException`

### writeCharSequence

    public void writeCharSequence(CharSequence s)
                           throws IOException

  Write a CharSequence (without any escaping of special characters): various implementations

  Throws:
    `IOException`

### processingInstruction

    public void processingInstruction(String target,
                                      CharSequence data,
                                      int locationId,
                                      int properties)
                               throws XPathException

  Handle a processing instruction.

  Parameters:
    `target` - The PI name. This must be a legal name (it will not be checked).
    `data` - The data portion of the processing instruction
    `locationId` - an integer which can be interpreted using a `LocationProvider` to return information such as line number and system ID. If no location information is available, the value zero is supplied.
    `properties` - Additional information about the PI. The following bits are defined:
  CHECKED
    Data is known to be legal (e.g. doesn't contain "?>")
  Throws:
    `XPathException`

### comment

    public void comment(CharSequence chars,
                        int locationId,
                        int properties)
                 throws XPathException

  Handle a comment.

  Parameters:
    `chars` - The content of the comment
    `locationId` - an integer which can be interpreted using a `LocationProvider` to return information such as line number and system ID. If no location information is available, the value zero is supplied.
    `properties` - Additional information about the comment. The following bits are defined:
  CHECKED
    Comment is known to be legal (e.g. doesn't contain "--")
  Throws:
    `XPathException`

### main

    public static void main(String[] params)
                     throws Exception

  Throws:
    `Exception`

Copyright (C) Michael H. Kay. All rights reserved.