org.apache.cocoon.components.language.markup.xsp
Class XSPExpressionFilter

java.lang.Object
  org.xml.sax.helpers.XMLFilterImpl
      org.apache.cocoon.components.language.markup.LogicsheetFilter
          org.apache.cocoon.components.language.markup.xsp.XSPExpressionFilter

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler, XMLFilter, XMLReader, XSPExpressionParser.Handler

public class XSPExpressionFilter

extends LogicsheetFilter

implements XSPExpressionParser.Handler

Filter attributes and text and expand {#expr} to xsp:attribute and xsp:expr elements.

Version:

$Id: XSPExpressionFilter.java 306628 2005-10-06 13:10:50Z vgritsenko $

Nested Class Summary

static class

XSPExpressionFilter.XMLPipeAdapter

Constructor Summary

XSPExpressionFilter(XSPMarkupLanguage markup)

Method Summary

protected void	addAttribute(AttributesImpl attribs, String name, String value) Add an attribute if it is neither null nor empty (length 0).
void	characters(char[] ch, int start, int length) Handle characters.
void	endElement(String uri, String loc, String raw) Flush the current expression.
void	handleExpression(char[] chars, int start, int length) Wrap expressions in xsp:expr tags.
void	handleText(char[] chars, int start, int length) Forward text to parent class.
void	startDocument() Create a new XSPExpressionFilter.
void	startElement(String namespaceURI, String localName, String qName, Attributes attribs) Start a new element.

Methods inherited from class org.apache.cocoon.components.language.markup.LogicsheetFilter

setNamespaceMap, setParent, startPrefixMapping

Methods inherited from class org.xml.sax.helpers.XMLFilterImpl

endDocument, endPrefixMapping, error, fatalError, getContentHandler, getDTDHandler, getEntityResolver, getErrorHandler, getFeature, getParent, getProperty, ignorableWhitespace, notationDecl, parse, parse, processingInstruction, resolveEntity, setContentHandler, setDocumentLocator, setDTDHandler, setEntityResolver, setErrorHandler, setFeature, setProperty, skippedEntity, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Constructor Detail

XSPExpressionFilter

public XSPExpressionFilter(XSPMarkupLanguage markup)

Method Detail

startDocument

public void startDocument()
                   throws SAXException

Create a new XSPExpressionFilter.

Specified by:

startDocument in interface ContentHandler

Throws:

SAXException

startElement

public void startElement(String namespaceURI,
                         String localName,
                         String qName,
                         Attributes attribs)
                  throws SAXException

Start a new element. If attribute value templates are enabled and the element has attributes with templates, these are replaced by xsp:attribute tags.

Specified by:

startElement in interface ContentHandler

Throws:

SAXException

See Also:

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

endElement

public void endElement(String uri,
                       String loc,
                       String raw)
                throws SAXException

Flush the current expression.

Specified by:

endElement in interface ContentHandler

Throws:

SAXException

characters

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

Handle characters. If text templates are enabled, the text is parsed and expressions are replaced.

Specified by:

characters in interface ContentHandler

Throws:

SAXException

See Also:

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

handleText

public void handleText(char[] chars,
                       int start,
                       int length)
                throws SAXException

Forward text to parent class.

Specified by:

handleText in interface XSPExpressionParser.Handler

Throws:

SAXException

See Also:

XSPExpressionParser.Handler.handleText(char[], int, int)

handleExpression

public void handleExpression(char[] chars,
                             int start,
                             int length)
                      throws SAXException

Wrap expressions in xsp:expr tags.

Specified by:

handleExpression in interface XSPExpressionParser.Handler

Throws:

SAXException

See Also:

XSPExpressionParser.Handler.handleExpression(char[], int, int)

addAttribute

protected void addAttribute(AttributesImpl attribs,
                            String name,
                            String value)

Add an attribute if it is neither null nor empty (length 0).

Parameters:

attribs - The attributes

name - The attribute name

value - The attribute value