javax.xml.bind.util.ValidationEventCollector.java Source code

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Here is the source code for javax.xml.bind.util.ValidationEventCollector.java

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/*
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
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 * file and include the License file at LICENSE.txt.
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package javax.xml.bind.util;

import javax.xml.bind.ValidationEvent;
import javax.xml.bind.ValidationEventHandler;
import java.util.ArrayList;
import java.util.List;

/**
 * {@link javax.xml.bind.ValidationEventHandler ValidationEventHandler} 
 * implementation that collects all events.
 * 
 * <p>
 * To use this class, create a new instance and pass it to the setEventHandler
 * method of the Validator, Unmarshaller, Marshaller class.  After the call to 
 * validate or unmarshal completes, call the getEvents method to retrieve all 
 * the reported errors and warnings.
 *
 * @author <ul><li>Kohsuke Kawaguchi, Sun Microsystems, Inc.</li><li>Ryan Shoemaker, Sun Microsystems, Inc.</li><li>Joe Fialli, Sun Microsystems, Inc.</li></ul> 
 * @see javax.xml.bind.Validator
 * @see javax.xml.bind.ValidationEventHandler
 * @see javax.xml.bind.ValidationEvent
 * @see javax.xml.bind.ValidationEventLocator
 * @since 1.6, JAXB 1.0
 */
public class ValidationEventCollector implements ValidationEventHandler {
    private final List<ValidationEvent> events = new ArrayList<ValidationEvent>();

    /**
     * Return an array of ValidationEvent objects containing a copy of each of 
     * the collected errors and warnings.
     * 
     * @return
     *      a copy of all the collected errors and warnings or an empty array
     *      if there weren't any
     */
    public ValidationEvent[] getEvents() {
        return events.toArray(new ValidationEvent[events.size()]);
    }

    /**
     * Clear all collected errors and warnings.
     */
    public void reset() {
        events.clear();
    }

    /**
     * Returns true if this event collector contains at least one 
     * ValidationEvent.
     *
     * @return true if this event collector contains at least one 
     *         ValidationEvent, false otherwise
     */
    public boolean hasEvents() {
        return !events.isEmpty();
    }

    public boolean handleEvent(ValidationEvent event) {
        events.add(event);

        boolean retVal = true;
        switch (event.getSeverity()) {
        case ValidationEvent.WARNING:
            retVal = true; // continue validation
            break;
        case ValidationEvent.ERROR:
            retVal = true; // continue validation
            break;
        case ValidationEvent.FATAL_ERROR:
            retVal = false; // halt validation
            break;
        default:
            _assert(false, Messages.format(Messages.UNRECOGNIZED_SEVERITY, event.getSeverity()));
            break;
        }

        return retVal;
    }

    private static void _assert(boolean b, String msg) {
        if (!b) {
            throw new InternalError(msg);
        }
    }
}