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.

另请参见：

DataFormatFilter

字段摘要

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

EMPTY_ATTS, LEXICAL_HANDLER_NAMES

构造方法摘要

DataUnformatFilter()
Create a new filter.

DataUnformatFilter(XMLReader xmlreader)
Create a new filter.

方法摘要

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

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

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 java.lang.Object 继承的方法

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

构造方法详细信息

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.

方法详细信息

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：

接口 ContentHandler 中的 startDocument

覆盖：

类 XMLFilterImpl 中的 startDocument

抛出：

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

另请参见：

ContentHandler.startDocument()

startElement

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

Filter a start element event.

指定者：

接口 ContentHandler 中的 startElement

覆盖：

类 XMLFilterImpl 中的 startElement

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.

另请参见：

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：

接口 ContentHandler 中的 endElement

覆盖：

类 XMLFilterImpl 中的 endElement

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.

另请参见：

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：

接口 ContentHandler 中的 characters

覆盖：

类 XMLFilterImpl 中的 characters

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.

另请参见：

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：

接口 ContentHandler 中的 ignorableWhitespace

覆盖：

类 XMLFilterImpl 中的 ignorableWhitespace

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.

另请参见：

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

processingInstruction

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

Filter a processing instruction event.

指定者：

接口 ContentHandler 中的 processingInstruction

覆盖：

类 XMLFilterImpl 中的 processingInstruction

参数：

target - The PI target.

data - The PI data.

抛出：

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

另请参见：

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.