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This open source software is a reference implementation, consisting of software and related files, for the OMG specification called the Semantics of a Foundational Subset for Executable UML Models (fUML). The reference implementation is intended to implement the execution semantics of UML activity models, accepting an XMI file from a conformant UML model as its input and providing an execution trace of the selected activity model(s) as its output. The core execution engine, which is directly generated from the normative syntactic and semantic models for fUML, may also be used as a library implementation of fUML in other software.

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/*
 * Copyright 2008 Lockheed Martin Corporation, except as stated in the file 
 * entitled Licensing-Information. All modifications copyright 2009 Data Access Technologies, Inc. Licensed under the Academic Free License 
 * version 3.0 (http://www.opensource.org/licenses/afl-3.0.php), except as stated 
 * in the file entitled Licensing-Information. 
 *
 * Contributors:
 *   MDS - initial API and implementation
 *
 */

package org.modeldriven.fuml.xmi;

import javax.xml.bind.ValidationEvent;
import javax.xml.bind.ValidationEventLocator;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.modeldriven.fuml.bind.BindingValidationEventHandler;

/**
 * Default handler, simply logging validation error events.
 * 
 * @author Scott Cinnamond
 */
public class XmiValidationEventHandler implements BindingValidationEventHandler {

    private static Log log = LogFactory.getLog(XmiValidationEventHandler.class);
    private int errorCount;
    private boolean cumulative = true;

    public int getErrorCount() {
        return errorCount;
    }

    public XmiValidationEventHandler() {
    }

    public XmiValidationEventHandler(boolean cumulative) {
        this.cumulative = cumulative;
    }

    public boolean handleEvent(ValidationEvent ve) {
        boolean result = this.cumulative;
        this.errorCount++;
        ValidationEventLocator vel = ve.getLocator();

        String message = "Line:Col:Offset[" + vel.getLineNumber() + ":" + vel.getColumnNumber()
                + ":" + String.valueOf(vel.getOffset()) + "] - " + ve.getMessage();

        switch (ve.getSeverity()) {
        case ValidationEvent.WARNING:
            log.warn(message);
            break;
        case ValidationEvent.ERROR:
            log.error(message);
            break;
        case ValidationEvent.FATAL_ERROR:
            log.fatal(message);
            break;
        default:
            log.error(message);
        }
        return result;
    }

    public void reset() {
        this.errorCount = 0;
    }

}