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package com.c2kernel.lifecycle.instance.predefined;
import com.c2kernel.common.InvalidDataException;
import com.c2kernel.common.ObjectNotFoundException;
import com.c2kernel.events.Event;
import com.c2kernel.lookup.AgentPath;
import com.c2kernel.persistency.ClusterStorage;
import com.c2kernel.persistency.ClusterStorageException;
import com.c2kernel.persistency.outcome.Viewpoint;
import com.c2kernel.process.Gateway;
import com.c2kernel.utils.Logger;
public class WriteViewpoint extends PredefinedStep {
public WriteViewpoint() {
super();
}
@Override
protected String runActivityLogic(AgentPath agent, int itemSysKey,
int transitionID, String requestData) throws InvalidDataException {
String schemaName;
String viewName;
int evId;
Logger.msg(1, "WriteViewpoint::request() - Starting.");
String[] params = getDataList(requestData);
// outcometype, name and evId. Event and Outcome should be checked so schema version should be discovered.
if (params.length != 3)
throw new InvalidDataException("WriteViewpoint usage: [ schemaName, viewName, eventId ]", "");
schemaName = params[0];
viewName = params[1];
try {
evId = Integer.parseInt(params[2]);
} catch (NumberFormatException ex) {
throw new InvalidDataException("Parameter 3 (EventId) must be an integer", "");
}
// Find event
Event ev;
try {
ev = (Event)Gateway.getStorage().get(itemSysKey, ClusterStorage.HISTORY+"/"+evId, null);
} catch (ObjectNotFoundException e) {
Logger.error(e);
throw new InvalidDataException("Event "+evId+" not found", "");
} catch (ClusterStorageException e) {
Logger.error(e);
throw new InvalidDataException("Exception loading event", "");
}
// Write new viewpoint
Viewpoint newView = new Viewpoint(itemSysKey, schemaName, viewName, ev.getSchemaVersion(), evId);
try {
Gateway.getStorage().put(itemSysKey, newView, null);
} catch (ClusterStorageException e) {
Logger.error(e);
throw new InvalidDataException("Could not store new viewpoint", "");
}
return requestData;
}
}
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