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/*
* JobSchedulerEventExistsJob.java
* Created on 25.06.2008
*
*/
package sos.scheduler.job;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.apache.xpath.XPathAPI;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import sos.spooler.Variable_set;
/**
*
* @author andreas.liebert@sos-berlin.com
*
* This job is used to check if certain events exist
*
*/
public class JobSchedulerExistsEventJob extends JobSchedulerJob {
public boolean spooler_process() throws Exception {
boolean rc = true;
try{
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document eventDocument = docBuilder.newDocument();
eventDocument.appendChild(eventDocument.createElement("events"));
JobSchedulerEventJob.readEventsFromDB(getConnection(), spooler, eventDocument, getLogger());
// merge params
Variable_set params = spooler.create_variable_set();
if (spooler_task.params() != null) params.merge(spooler_task.params());
if (spooler_job.order_queue() != null && spooler_task.order().params() != null)
params.merge(spooler_task.order().params());
String eventSpec ="";
if (params.var("scheduler_event_spec")!=null && params.var("scheduler_event_spec").length()>0){
eventSpec = params.var("scheduler_event_spec");
}else{
throw new Exception("parameter scheduler_event_spec is missing");
}
getLogger().debug3(".. job parameter [scheduler_event_spec]: " + eventSpec);
getLogger().debug("Checking events for: "+eventSpec);
NodeList nodes = (NodeList) XPathAPI.selectNodeList(eventDocument, eventSpec);
if (nodes==null || nodes.getLength()==0){
getLogger().info("No matching events were found.");
rc=false;
} else{
getLogger().info("Matching events were found.");
rc=true;
}
} catch(Exception e){
throw new Exception("Error checking events: "+e,e);
}
return rc;
}
}