Example usage for javax.xml.bind Unmarshaller getEventHandler

Introduction

In this page you can find the example usage for javax.xml.bind Unmarshaller getEventHandler.

Prototype

public ValidationEventHandler getEventHandler() throws JAXBException;

Source Link

Document

Return the current event handler or the default event handler if one hasn't been set.

Usage

From source file:cz.cas.lib.proarc.common.workflow.profile.WorkflowProfiles.java

private void read() throws JAXBException {
    long currentTime = file.lastModified();
    if (currentTime == lastModified) {
        return;/*  w  w w. j  a  va2s . c om*/
    }
    Unmarshaller unmarshaller = getUnmarshaller();
    ValidationEventCollector errors = (ValidationEventCollector) unmarshaller.getEventHandler();
    WorkflowDefinition fetchedWf = null;
    try {
        WorkflowDefinition wf = (WorkflowDefinition) unmarshaller.unmarshal(file);
        if (!errors.hasEvents()) {
            readCaches(wf);
            fetchedWf = wf;
        }
    } catch (UnmarshalException ex) {
        if (!errors.hasEvents()) {
            throw ex;
        }
    } finally {
        setProfiles(fetchedWf, currentTime);
    }
    if (errors.hasEvents()) {
        StringBuilder err = new StringBuilder();
        for (ValidationEvent event : errors.getEvents()) {
            err.append(event).append('\n');
        }
        throw new JAXBException(err.toString());
    }
}

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From source file:org.rhq.enterprise.server.xmlschema.ServerPluginDescriptorUtil.java

/**
 * Loads a plugin descriptor from the given plugin jar and returns it. If the given jar does not
 * have a server plugin descriptor, <code>null</code> will be returned, meaning this is not
 * a server plugin jar.//ww w  .j  a  va  2s. c  o m
 *  
 * @param pluginJarFileUrl URL to a plugin jar file
 * @return the plugin descriptor found in the given plugin jar file, or <code>null</code> if there
 *         is no plugin descriptor in the jar file
 * @throws Exception if failed to parse the descriptor file found in the plugin jar
 */
public static ServerPluginDescriptorType loadPluginDescriptorFromUrl(URL pluginJarFileUrl) throws Exception {

    final Log logger = LogFactory.getLog(ServerPluginDescriptorUtil.class);

    if (pluginJarFileUrl == null) {
        throw new Exception("A valid plugin JAR URL must be supplied.");
    }

    if (logger.isDebugEnabled()) {
        logger.debug("Loading plugin descriptor from plugin jar at [" + pluginJarFileUrl + "]...");
    }

    testPluginJarIsReadable(pluginJarFileUrl);

    JarInputStream jis = null;
    JarEntry descriptorEntry = null;

    try {
        jis = new JarInputStream(pluginJarFileUrl.openStream());
        JarEntry nextEntry = jis.getNextJarEntry();
        while (nextEntry != null && descriptorEntry == null) {
            if (PLUGIN_DESCRIPTOR_PATH.equals(nextEntry.getName())) {
                descriptorEntry = nextEntry;
            } else {
                jis.closeEntry();
                nextEntry = jis.getNextJarEntry();
            }
        }

        ServerPluginDescriptorType pluginDescriptor = null;

        if (descriptorEntry != null) {
            Unmarshaller unmarshaller = null;
            try {
                unmarshaller = getServerPluginDescriptorUnmarshaller();
                Object jaxbElement = unmarshaller.unmarshal(jis);
                pluginDescriptor = ((JAXBElement<? extends ServerPluginDescriptorType>) jaxbElement).getValue();
            } finally {
                if (unmarshaller != null) {
                    ValidationEventCollector validationEventCollector = (ValidationEventCollector) unmarshaller
                            .getEventHandler();
                    logValidationEvents(pluginJarFileUrl, validationEventCollector);
                }
            }
        }

        return pluginDescriptor;

    } catch (Exception e) {
        throw new Exception("Could not successfully parse the plugin descriptor [" + PLUGIN_DESCRIPTOR_PATH
                + "] found in plugin jar at [" + pluginJarFileUrl + "]", e);
    } finally {
        if (jis != null) {
            try {
                jis.close();
            } catch (Exception e) {
                logger.warn("Cannot close jar stream [" + pluginJarFileUrl + "]. Cause: " + e);
            }
        }
    }
}

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