net.sf.saxon.serialize
Class XMLIndenter

java.lang.Object
  net.sf.saxon.event.SequenceReceiver
      net.sf.saxon.event.ProxyReceiver
          net.sf.saxon.serialize.XMLIndenter

All Implemented Interfaces:

Result, Receiver

Direct Known Subclasses:

XMLIndenterPE

public class XMLIndenter
extends ProxyReceiver

XMLIndenter: This ProxyReceiver indents elements, by adding character data where appropriate. The character data is always added as "ignorable white space", that is, it is never added adjacent to existing character data.

Author:

Michael Kay

Field Summary

Fields inherited from class net.sf.saxon.event.ProxyReceiver

nextReceiver

Fields inherited from class net.sf.saxon.event.SequenceReceiver

pipelineConfiguration, previousAtomic, systemId

Fields inherited from interface javax.xml.transform.Result

PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING

Constructor Summary

XMLIndenter(XMLEmitter next)
Create an XML Indenter

Method Summary

void	attribute(NodeName attName, SimpleType typeCode, CharSequence value, int locationId, int properties) Output an attribute
void	characters(CharSequence chars, int locationId, int properties) Output character data
void	comment(CharSequence chars, int locationId, int properties) Output a comment
void	endDocument() Notify the end of a document node
void	endElement() Output element end tag
protected int	getIndentation() Get the number of spaces to be used for indentation
protected int	getLineLength() Get the suggested maximum length of a line
protected boolean	isDoubleSpaced(NodeName name) Ask whether a particular element is to be double-spaced
void	namespace(NamespaceBinding namespaceBinding, int properties) Notify a namespace.
void	open() Start of document
void	processingInstruction(String target, CharSequence data, int locationId, int properties) Output a processing instruction
void	setOutputProperties(Properties props) Set the properties for this indenter
void	startContent() Notify the start of the content, that is, the completion of all attributes and namespaces.
void	startElement(NodeName nameCode, SchemaType type, int locationId, int properties) Output element start tag
boolean	usesTypeAnnotations() Ask whether this Receiver (or the downstream pipeline) makes any use of the type annotations supplied on element and attribute events

Methods inherited from class net.sf.saxon.event.ProxyReceiver

append, close, getNamePool, getUnderlyingReceiver, setPipelineConfiguration, setSystemId, setUnderlyingReceiver, setUnparsedEntity, startDocument

Methods inherited from class net.sf.saxon.event.SequenceReceiver

append, getConfiguration, getPipelineConfiguration, getSystemId

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

XMLIndenter

public XMLIndenter(XMLEmitter next)

Create an XML Indenter

Parameters:

next - the next receiver in the pipeline, always an XMLEmitter

Method Detail

setOutputProperties

public void setOutputProperties(Properties props)

Set the properties for this indenter

Parameters:

props - the serialization properties

open

public void open()
          throws XPathException

Start of document

Specified by:

open in interface Receiver

Overrides:

open in class ProxyReceiver

Throws:

XPathException - if an error occurs

startElement

public void startElement(NodeName nameCode,
                         SchemaType type,
                         int locationId,
                         int properties)
                  throws XPathException

Output element start tag

Specified by:

startElement in interface Receiver

Overrides:

startElement in class ProxyReceiver

Parameters:

nameCode - integer code identifying the name of the element within the name pool.

type - integer code identifying the element's type within the name pool.

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 - properties of the element node

Throws:

XPathException - if an error occurs

namespace

public void namespace(NamespaceBinding namespaceBinding,
                      int properties)
               throws XPathException

Description copied from class: ProxyReceiver

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; however, duplicates may be reported. A namespace must not conflict with any namespaces already used for element or attribute names.

Specified by:

namespace in interface Receiver

Overrides:

namespace in class ProxyReceiver

Parameters:

namespaceBinding - the prefix/uri pair representing the namespace binding

properties - any special properties to be passed on this call

Throws:

XPathException - if an error occurs

attribute

public void attribute(NodeName attName,
                      SimpleType typeCode,
                      CharSequence value,
                      int locationId,
                      int properties)
               throws XPathException

Output an attribute

Specified by:

attribute in interface Receiver

Overrides:

attribute in class ProxyReceiver

Parameters:

attName - The name of the attribute, as held in the name pool

typeCode - The type of the attribute, as held in the name pool

value - the string value of the attribute

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 - if an error occurs

startContent

public void startContent()
                  throws XPathException

Description copied from class: ProxyReceiver

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.

Specified by:

startContent in interface Receiver

Overrides:

startContent in class ProxyReceiver

Throws:

XPathException - if an error occurs

endElement

public void endElement()
                throws XPathException

Output element end tag

Specified by:

endElement in interface Receiver

Overrides:

endElement in class ProxyReceiver

Throws:

XPathException - if an error occurs

processingInstruction

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

Output a processing instruction

Specified by:

processingInstruction in interface Receiver

Overrides:

processingInstruction in class ProxyReceiver

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.

Throws:

XPathException - if an error occurs

characters

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

Output character data

Specified by:

characters in interface Receiver

Overrides:

characters in class ProxyReceiver

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

Throws:

XPathException - if an error occurs

comment

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

Output a comment

Specified by:

comment in interface Receiver

Overrides:

comment in class ProxyReceiver

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.

Throws:

XPathException - if an error occurs

usesTypeAnnotations

public boolean usesTypeAnnotations()

Ask whether this Receiver (or the downstream pipeline) makes any use of the type annotations supplied on element and attribute events

Specified by:

usesTypeAnnotations in interface Receiver

Overrides:

usesTypeAnnotations in class ProxyReceiver

Returns:

true if the Receiver makes any use of this information. If false, the caller may supply untyped nodes instead of supplying the type annotation

endDocument

public void endDocument()
                 throws XPathException

Description copied from class: ProxyReceiver

Notify the end of a document node

Specified by:

endDocument in interface Receiver

Overrides:

endDocument in class ProxyReceiver

Throws:

XPathException - if an error occurs

getIndentation

protected int getIndentation()

Get the number of spaces to be used for indentation

Returns:

the number of spaces to be added to the indentation for each level

isDoubleSpaced

protected boolean isDoubleSpaced(NodeName name)

Ask whether a particular element is to be double-spaced

Parameters:

name - the element name

Returns:

true if double-spacing is in effect for this element

getLineLength

protected int getLineLength()

Get the suggested maximum length of a line

Returns:

the suggested maximum line length (used for wrapping attributes)