net.sourceforge.htmlunit.xerces.xni.parser

Interface XMLParserConfiguration

All Superinterfaces:

XMLComponentManager

All Known Implementing Classes:

HTMLConfiguration

public interface XMLParserConfiguration
extends XMLComponentManager

Represents a parser configuration. The parser configuration maintains a table of recognized features and properties, assembles components for the parsing pipeline, and is responsible for initiating parsing of an XML document.

By separating the configuration of a parser from the specific parser instance, applications can create new configurations and re-use the existing parser components and external API generators (e.g. the DOMParser and SAXParser).

The internals of any specific parser configuration instance are hidden. Therefore, each configuration may implement the parsing mechanism any way necessary. However, the parser configuration should follow these guidelines:

• Call the reset method on each component before parsing. This is only required if the configuration is re-using existing components that conform to the XMLComponent interface. If the configuration uses all custom parts, then it is free to implement everything as it sees fit as long as it follows the other guidelines.
• Call the setFeature and setProperty method on each component during parsing to propagate features and properties that have changed. This is only required if the configuration is re-using existing components that conform to the XMLComponent interface. If the configuration uses all custom parts, then it is free to implement everything as it sees fit as long as it follows the other guidelines.
• Pass the same unique String references for all symbols that are propagated to the registered handlers. Symbols include, but may not be limited to, the names of elements and attributes (including their uri, prefix, and localpart). This is suggested but not an absolute must. However, the standard parser components may require access to the same symbol table for creation of unique symbol references to be propagated in the XNI pipeline.

Author:

Arnaud Le Hors, IBM, Andy Clark, IBM

Method Summary

Modifier and Type	Method and Description
void	addRecognizedFeatures(String[] featureIds) Allows a parser to add parser specific features to be recognized and managed by the parser configuration.
void	addRecognizedProperties(String[] propertyIds) Allows a parser to add parser specific properties to be recognized and managed by the parser configuration.
void	cleanup() If the application decides to terminate parsing before the xml document is fully parsed, the application should call this method to free any resource allocated during parsing.
XMLDocumentHandler	getDocumentHandler()
XMLErrorHandler	getErrorHandler()
boolean	getFeature(String featureId)
Object	getProperty(String propertyId)
boolean	parse(boolean complete) Parses the document in a pull parsing fashion.
void	parse(XMLInputSource inputSource) Parse an XML document.
void	setDocumentHandler(XMLDocumentHandler documentHandler) Sets the document handler to receive information about the document.
void	setErrorHandler(XMLErrorHandler errorHandler) Sets the error handler.
void	setFeature(String featureId, boolean state) Sets the state of a feature.
void	setInputSource(XMLInputSource inputSource) Sets the input source for the document to parse.
void	setProperty(String propertyId, Object value) Sets the value of a property.

Method Detail

parse

void parse(XMLInputSource inputSource)
    throws XNIException,
           IOException

Parse an XML document.

The parser can use this method to instruct this configuration to begin parsing an XML document from any valid input source (a character stream, a byte stream, or a URI).

Parsers may not invoke this method while a parse is in progress. Once a parse is complete, the parser may then parse another XML document.

This method is synchronous: it will not return until parsing has ended. If a client application wants to terminate parsing early, it should throw an exception.

When this method returns, all characters streams and byte streams opened by the parser are closed.

Parameters:

inputSource - The input source for the top-level of the XML document.

Throws:

XNIException - Any XNI exception, possibly wrapping another exception.

IOException - An IO exception from the parser, possibly from a byte stream or character stream supplied by the parser.

addRecognizedFeatures

void addRecognizedFeatures(String[] featureIds)

Allows a parser to add parser specific features to be recognized and managed by the parser configuration.

Parameters:

featureIds - An array of the additional feature identifiers to be recognized.

setFeature

void setFeature(String featureId,
                boolean state)
         throws XMLConfigurationException

Sets the state of a feature. This method is called by the parser and gets propagated to components in this parser configuration.

Parameters:

featureId - The feature identifier.

state - The state of the feature.

Throws:

XMLConfigurationException - Thrown if there is a configuration error.

getFeature

boolean getFeature(String featureId)
            throws XMLConfigurationException

Specified by:

getFeature in interface XMLComponentManager

Parameters:

featureId - The feature identifier.

Returns:

the state of a feature.

Throws:

XMLConfigurationException - Thrown if there is a configuration error.

addRecognizedProperties

void addRecognizedProperties(String[] propertyIds)

Allows a parser to add parser specific properties to be recognized and managed by the parser configuration.

Parameters:

propertyIds - An array of the additional property identifiers to be recognized.

setProperty

void setProperty(String propertyId,
                 Object value)
          throws XMLConfigurationException

Sets the value of a property. This method is called by the parser and gets propagated to components in this parser configuration.

Parameters:

propertyId - The property identifier.

value - The value of the property.

Throws:

XMLConfigurationException - Thrown if there is a configuration error.

getProperty

Object getProperty(String propertyId)
            throws XMLConfigurationException

Specified by:

getProperty in interface XMLComponentManager

Parameters:

propertyId - The property identifier.

Returns:

the value of a property.

Throws:

XMLConfigurationException - Thrown if there is a configuration error.

setErrorHandler

void setErrorHandler(XMLErrorHandler errorHandler)

Sets the error handler.

Parameters:

errorHandler - The error resolver.

getErrorHandler

XMLErrorHandler getErrorHandler()

Returns:

the registered error handler.

setDocumentHandler

void setDocumentHandler(XMLDocumentHandler documentHandler)

Sets the document handler to receive information about the document.

Parameters:

documentHandler - The document handler.

getDocumentHandler

XMLDocumentHandler getDocumentHandler()

Returns:

the registered document handler.

setInputSource

void setInputSource(XMLInputSource inputSource)
             throws XMLConfigurationException,
                    IOException

Sets the input source for the document to parse.

Parameters:

inputSource - The document's input source.

Throws:

XMLConfigurationException - Thrown if there is a configuration error when initializing the parser.

IOException - Thrown on I/O error.

See Also:

parse(boolean)

parse

boolean parse(boolean complete)
       throws XNIException,
              IOException

Parses the document in a pull parsing fashion.

Parameters:

complete - True if the pull parser should parse the remaining document completely.

Returns:

True if there is more document to parse.

Throws:

XNIException - Any XNI exception, possibly wrapping another exception.

IOException - An IO exception from the parser, possibly from a byte stream or character stream supplied by the parser.

See Also:

setInputSource(net.sourceforge.htmlunit.xerces.xni.parser.XMLInputSource)

cleanup

void cleanup()

If the application decides to terminate parsing before the xml document is fully parsed, the application should call this method to free any resource allocated during parsing. For example, close all opened streams.