Package org.imixs.workflow.bpmn

Class BPMNModelHandler

java.lang.Object

org.xml.sax.helpers.DefaultHandler

org.imixs.workflow.bpmn.BPMNModelHandler

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class BPMNModelHandler
extends DefaultHandler

The Imixs BPMNDefaultHandler is used to extract the Imixs Task and Event Elements of a Imixs BPMN model. A BPMN file can either be a simple diagram with one process or a collaboration diagram with a bpmn2:collaboration definition. For collaboration diagrams the currentWorkflowGroup is read from the bpmn2:collaboration element. For a simple BPMN diagram type the currentWorkflowGroup is read from the bpmn2:process element. #issue 113: The parser connects pairs of catch and throw link events with a virtual SequenceFlow to support the same behavior as if the link events were connected directly.

Author:

rsoika

Constructor Summary

Constructors

Constructor	Description
BPMNModelHandler()

Method Summary

Modifier and Type	Method	Description
BPMNModel	buildModel()	This method builds the model from the information parsed by the handler.
void	characters(char[] ch, int start, int length)
void	endElement(String uri, String localName, String qName)
void	startElement(String uri, String localName, String qName, Attributes attributes)

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

endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.xml.sax.ContentHandler

declaration

Constructor Details

BPMNModelHandler

public BPMNModelHandler()

Method Details

startElement

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

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Throws:

SAXException

endElement

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

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

Throws:

SAXException

characters

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

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

Throws:

SAXException

buildModel

public BPMNModel buildModel()
                     throws ModelException

This method builds the model from the information parsed by the handler. First all task elements were adds as unique process entities into the model. In the second step the method adds the Activity elements to the assigned Task. We look also for activities with no incoming SequenceFlow. The builder verifies the ProcessIDs for each task element to guaranty that the numProcessID is unique The build connects pairs of Catch and Throw LinkEvents with a virtual SequenceFlow to support the same behavior as if those elements where connected directly in the model. The method tests the model for bpmn2:message elements and replace links in Activity elements attribute 'rtfMailBody'

Throws:

ModelException