com.jdon.util.jdom

类 DataUnformatFilter

java.lang.Object

org.xml.sax.helpers.XMLFilterImpl

com.jdon.util.jdom.XMLFilterBase

com.jdon.util.jdom.DataUnformatFilter

所有已实现的接口:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler, LexicalHandler, XMLFilter, XMLReader

public class DataUnformatFilter
extends XMLFilterBase

Filter for removing formatting from data- or field-oriented XML. Code and comments adapted from DataWriter-0.2, written by David Megginson and released into the public domain, without warranty.

This filter removes leading and trailing whitespace from field-oriented XML without mixed content. Note that this class will likely not yield appropriate results for document-oriented XML like XHTML pages, which mix character data and elements together.

另请参阅:

DataFormatFilter

字段概要

从类继承的字段 com.jdon.util.jdom.XMLFilterBase

EMPTY_ATTS, LEXICAL_HANDLER_NAMES

构造器概要

构造器

构造器和说明
DataUnformatFilter() Create a new filter.
DataUnformatFilter(XMLReader xmlreader) Create a new filter.

方法概要

限定符和类型	方法和说明
void	characters(char[] ch, int start, int length) Filter a character data event.
protected void	clearWhitespace() Discards saved whitespace.
protected void	emitWhitespace() Passes saved whitespace down the filter chain.
void	endElement(String uri, String localName, String qName) Filter an end element event.
void	ignorableWhitespace(char[] ch, int start, int length) Filter an ignorable whitespace event.
void	processingInstruction(String target, String data) Filter a processing instruction event.
void	reset() Reset the filter so that it can be reused.
protected void	saveWhitespace(char[] ch, int start, int length) Saves trailing whitespace.
void	startDocument() Filter a start document event.
void	startElement(String uri, String localName, String qName, Attributes atts) Filter a start element event.

从类继承的方法 com.jdon.util.jdom.XMLFilterBase

characters, comment, dataElement, dataElement, dataElement, dataElement, emptyElement, emptyElement, emptyElement, emptyElement, endCDATA, endDTD, endElement, endElement, endEntity, getLexicalHandler, getProperty, parse, setLexicalHandler, setProperty, startCDATA, startDTD, startElement, startElement, startElement, startEntity

从类继承的方法 org.xml.sax.helpers.XMLFilterImpl

endDocument, endPrefixMapping, error, fatalError, getContentHandler, getDTDHandler, getEntityResolver, getErrorHandler, getFeature, getParent, notationDecl, parse, resolveEntity, setContentHandler, setDocumentLocator, setDTDHandler, setEntityResolver, setErrorHandler, setFeature, setParent, skippedEntity, startPrefixMapping, unparsedEntityDecl, warning

从类继承的方法 java.lang.Object

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

构造器详细资料

DataUnformatFilter

public DataUnformatFilter()

Create a new filter.

DataUnformatFilter

public DataUnformatFilter(XMLReader xmlreader)

Create a new filter.

Use the XMLReader provided as the source of events.

参数:

xmlreader - The parent in the filter chain.

方法详细资料

reset

public void reset()

Reset the filter so that it can be reused.

This method is especially useful if the filter failed with an exception the last time through.

startDocument

public void startDocument()
                   throws SAXException

Filter a start document event.

Reset state and pass the event on for further processing.

指定者:

startDocument 在接口中 ContentHandler

覆盖:

startDocument 在类中 org.xml.sax.helpers.XMLFilterImpl

抛出:

SAXException - If a filter further down the chain raises an exception.

另请参阅:

ContentHandler.startDocument()

startElement

public void startElement(String uri,
                         String localName,
                         String qName,
                         Attributes atts)
                  throws SAXException

Filter a start element event.

指定者:

startElement 在接口中 ContentHandler

覆盖:

startElement 在类中 org.xml.sax.helpers.XMLFilterImpl

参数:

uri - The element's Namespace URI.

localName - The element's local name.

qName - The element's qualified (prefixed) name.

atts - The element's attribute list.

抛出:

SAXException - If a filter further down the chain raises an exception.

另请参阅:

ContentHandler.startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)

endElement

public void endElement(String uri,
                       String localName,
                       String qName)
                throws SAXException

Filter an end element event.

指定者:

endElement 在接口中 ContentHandler

覆盖:

endElement 在类中 org.xml.sax.helpers.XMLFilterImpl

参数:

uri - The element's Namespace URI.

localName - The element's local name.

qName - The element's qualified (prefixed) name.

抛出:

SAXException - If a filter further down the chain raises an exception.

另请参阅:

ContentHandler.endElement(java.lang.String, java.lang.String, java.lang.String)

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws SAXException

Filter a character data event.

指定者:

characters 在接口中 ContentHandler

覆盖:

characters 在类中 org.xml.sax.helpers.XMLFilterImpl

参数:

ch - The characters to write.

start - The starting position in the array.

length - The number of characters to use.

抛出:

SAXException - If a filter further down the chain raises an exception.

另请参阅:

ContentHandler.characters(char[], int, int)

ignorableWhitespace

public void ignorableWhitespace(char[] ch,
                                int start,
                                int length)
                         throws SAXException

Filter an ignorable whitespace event.

指定者:

ignorableWhitespace 在接口中 ContentHandler

覆盖:

ignorableWhitespace 在类中 org.xml.sax.helpers.XMLFilterImpl

参数:

ch - The array of characters to write.

start - The starting position in the array.

length - The number of characters to write.

抛出:

SAXException - If a filter further down the chain raises an exception.

另请参阅:

ContentHandler.ignorableWhitespace(char[], int, int)

processingInstruction

public void processingInstruction(String target,
                                  String data)
                           throws SAXException

Filter a processing instruction event.

指定者:

processingInstruction 在接口中 ContentHandler

覆盖:

processingInstruction 在类中 org.xml.sax.helpers.XMLFilterImpl

参数:

target - The PI target.

data - The PI data.

抛出:

SAXException - If a filter further down the chain raises an exception.

另请参阅:

ContentHandler.processingInstruction(java.lang.String, java.lang.String)

saveWhitespace

protected void saveWhitespace(char[] ch,
                              int start,
                              int length)

Saves trailing whitespace.

emitWhitespace

protected void emitWhitespace()
                       throws SAXException

Passes saved whitespace down the filter chain.

抛出:

SAXException

clearWhitespace

protected void clearWhitespace()

Discards saved whitespace.