Revision 29489
Added by Claudio Atzori almost 10 years ago
| modules/cnr-blackboard-common/trunk/src/main/java/eu/dnetlib/enabling/tools/blackboard/AbstractBlackboardNotificationHandler.java | ||
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package eu.dnetlib.enabling.tools.blackboard; |
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import java.io.IOException; |
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import java.util.concurrent.Executor; |
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import java.util.concurrent.Executors; |
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import javax.xml.parsers.ParserConfigurationException; |
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import javax.xml.xpath.XPathExpressionException; |
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/** |
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* Common blackboard notification handler. This notification handler processes only message with ...BODY.BLACKBOARD.LAST* as topic. |
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* |
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* @param <T> type of blackboard handler used to extract the blackboard message (client or server) |
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* |
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* @param <T> |
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* type of blackboard handler used to extract the blackboard message (client or server) |
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* @author marko |
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* |
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*
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*/ |
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public abstract class AbstractBlackboardNotificationHandler<T extends BlackboardHandler> implements NotificationHandler, Enableable {
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* blackboard handler. |
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*/ |
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private T blackboardHandler; |
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/** |
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* true if enabled. |
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*/ |
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private boolean enabled = true;
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private boolean enabled = true; |
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/** |
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* Executor handles the notified request in a dedicated thread and allows to return immediately. |
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*/ |
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private Executor executor = Executors.newCachedThreadPool(); |
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/** |
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* {@inheritDoc}
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* |
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* @see eu.dnetlib.data.mdstore.NotificationHandler#notified(java.lang.String, java.lang.String, java.lang.String, |
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* java.lang.String) |
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* |
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* @see eu.dnetlib.data.mdstore.NotificationHandler#notified(java.lang.String, java.lang.String, java.lang.String, java.lang.String) |
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*/ |
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@Override |
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public void notified(final String subscrId, final String topic, final String rsId, final String profile) {
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if (!topic.contains("BODY.BLACKBOARD.LAST"))
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return; |
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if (!topic.contains("BODY.BLACKBOARD.LAST")) return;
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try {
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processJob(blackboardHandler.getJob(new StringOpaqueResource(profile))); |
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} catch (final XPathExpressionException e) {
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throw new IllegalStateException(e); |
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} catch (final SAXException e) {
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throw new IllegalStateException(e); |
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} catch (final IOException e) {
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throw new IllegalStateException(e); |
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} catch (final ParserConfigurationException e) {
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throw new IllegalStateException(e); |
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} |
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executor.execute(new Runnable() {
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@Override |
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public void run() {
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try {
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processJob(blackboardHandler.getJob(new StringOpaqueResource(profile))); |
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} catch (final XPathExpressionException e) {
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throw new IllegalStateException(e); |
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} catch (final SAXException e) {
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throw new IllegalStateException(e); |
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} catch (final IOException e) {
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throw new IllegalStateException(e); |
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} catch (final ParserConfigurationException e) {
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throw new IllegalStateException(e); |
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} |
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} |
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}); |
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} |
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/** |
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* Subclassess override this to process incoming blackboard jobs. |
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* |
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*
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* @param job |
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* blackboard job |
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*/ |
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} |
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@Override |
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public void setEnabled(boolean enabled) {
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public void setEnabled(final boolean enabled) {
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this.enabled = enabled; |
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} |
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Also available in: Unified diff
delegates the execution to a dedicated thread