org.jfree.report.modules.parser.ext
Class ExpressionHandler

java.lang.Object
  org.jfree.report.modules.parser.ext.AbstractExtReportParserHandler
      org.jfree.report.modules.parser.ext.ExpressionHandler

All Implemented Interfaces:

org.jfree.xml.ElementDefinitionHandler

public class ExpressionHandler

extends AbstractExtReportParserHandler

An expression handler. Handles the creation of a single expression or function.

Author:

Thomas Morgner

See Also:

Expression, Function

Field Summary

static java.lang.String

PROPERTIES_TAG The properties tag name.

Constructor Summary

ExpressionHandler(ReportParser parser, java.lang.String finishTag, Expression expression, CommentHintPath base)
Creates a new expression handler.

Method Summary

void	characters(char[] ch, int start, int length) Callback to indicate that some character data has been read.
void	endElement(java.lang.String tagName) Callback to indicate that an XML element end tag has been read by the parser.
Expression	getExpression() Returns the expression.
void	startElement(java.lang.String tagName, org.xml.sax.Attributes attrs) Callback to indicate that an XML element start tag has been read by the parser.

Methods inherited from class org.jfree.report.modules.parser.ext.AbstractExtReportParserHandler

addComment, getFinishTag, getParser, getParserHints, getReport, getReportParser

Methods inherited from class java.lang.Object

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

Field Detail

PROPERTIES_TAG

public static final java.lang.String PROPERTIES_TAG

The properties tag name.

See Also:

Constant Field Values

Constructor Detail

ExpressionHandler

public ExpressionHandler(ReportParser parser,
                         java.lang.String finishTag,
                         Expression expression,
                         CommentHintPath base)

Creates a new expression handler.

Parameters:

parser - the parser.

finishTag - the finish tag.

expression - the expression.

base - the comment hint path that should be used to store additional xml informations for the writer.

Method Detail

startElement

public void startElement(java.lang.String tagName,
                         org.xml.sax.Attributes attrs)
                  throws org.xml.sax.SAXException

Callback to indicate that an XML element start tag has been read by the parser.

Parameters:

tagName - the tag name.

attrs - the attributes.

Throws:

org.xml.sax.SAXException - if a parser error occurs or the validation failed.

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws org.xml.sax.SAXException

Callback to indicate that some character data has been read.

Parameters:

ch - the character array.

start - the start index for the characters.

length - the length of the character sequence.

Throws:

org.xml.sax.SAXException - if a parser error occurs or the validation failed.

endElement

public void endElement(java.lang.String tagName)
                throws org.xml.sax.SAXException

Callback to indicate that an XML element end tag has been read by the parser.

Parameters:

tagName - the tag name.

Throws:

org.xml.sax.SAXException - if a parser error occurs or the validation failed.

getExpression

public Expression getExpression()

Returns the expression.

Returns:

The expression.