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package eu.dnetlib.xml.database.exist;
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import javax.xml.xpath.XPathExpression;
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import javax.xml.xpath.XPathExpressionException;
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import javax.xml.xpath.XPathFactory;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.exist.collections.triggers.SAXTrigger;
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import org.exist.collections.triggers.TriggerException;
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import org.exist.dom.persistent.DocumentImpl;
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import org.exist.storage.DBBroker;
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import org.exist.storage.txn.Txn;
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import org.exist.xmldb.XmldbURI;
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/**
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* simple test trigger.
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*
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* @author marko
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*
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*/
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public class TestExistTrigger extends SAXTrigger {
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/**
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* logger.
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*/
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private static final Log log = LogFactory.getLog(TestExistTrigger.class); // NOPMD by marko on 11/24/08 5:02 PM
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/**
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* expression.
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*/
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private transient XPathExpression expr;
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/**
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* useless.
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*/
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public TestExistTrigger() {
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super();
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try {
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expr = XPathFactory.newInstance().newXPath().compile("//hello");
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} catch (XPathExpressionException e) {
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log.fatal("cannot parse xpath", e);
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}
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}
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@Override
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public void beforeCreateDocument(final DBBroker dbBroker, final Txn txn, final XmldbURI xmldbURI) throws TriggerException {
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}
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@Override
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public void afterCreateDocument(final DBBroker dbBroker, final Txn txn, final DocumentImpl document) throws TriggerException {
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try {
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log.debug("created new document: " + expr.evaluate(document));
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} catch (XPathExpressionException e) {
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log.fatal("xpatthing", e);
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}
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}
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@Override
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public void beforeUpdateDocument(final DBBroker dbBroker, final Txn txn, final DocumentImpl document) throws TriggerException {
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try {
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log.info("old value: " + expr.evaluate(document));
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} catch (XPathExpressionException e) {
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log.fatal("xpatthing", e);
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}
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}
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@Override
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public void afterUpdateDocument(final DBBroker dbBroker, final Txn txn, final DocumentImpl document) throws TriggerException {
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try {
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log.info("new value: " + expr.evaluate(document));
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} catch (XPathExpressionException e) {
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log.fatal("xpatthing", e);
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}
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}
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@Override
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public void beforeUpdateDocumentMetadata(final DBBroker dbBroker, final Txn txn, final DocumentImpl document) throws TriggerException {
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}
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@Override
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public void afterUpdateDocumentMetadata(final DBBroker dbBroker, final Txn txn, final DocumentImpl document) throws TriggerException {
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}
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@Override
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public void beforeCopyDocument(final DBBroker dbBroker, final Txn txn, final DocumentImpl document, final XmldbURI xmldbURI) throws TriggerException {
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}
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@Override
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public void afterCopyDocument(final DBBroker dbBroker, final Txn txn, final DocumentImpl document, final XmldbURI xmldbURI) throws TriggerException {
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}
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@Override
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public void beforeMoveDocument(final DBBroker dbBroker, final Txn txn, final DocumentImpl document, final XmldbURI xmldbURI) throws TriggerException {
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}
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@Override
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public void afterMoveDocument(final DBBroker dbBroker, final Txn txn, final DocumentImpl document, final XmldbURI xmldbURI) throws TriggerException {
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}
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@Override
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public void beforeDeleteDocument(final DBBroker dbBroker, final Txn txn, final DocumentImpl document) throws TriggerException {
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try {
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log.debug("deleted document: " + expr.evaluate(document));
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} catch (XPathExpressionException e) {
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log.fatal("xpatthing", e);
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}
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}
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@Override
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public void afterDeleteDocument(final DBBroker dbBroker, final Txn txn, final XmldbURI xmldbURI) throws TriggerException {
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}
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}
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