ThresholdHandler.h

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#ifndef CARMA_MONITOR_THRESHOLDHANDLER_H
#define CARMA_MONITOR_THRESHOLDHANDLER_H

#include <xercesc/sax/HandlerBase.hpp>
#include <vector>

XERCES_CPP_NAMESPACE_USE


namespace carma {
  namespace monitor {

    class MonitorSystemWithThreshold; // forward declaration

    class ThresholdHandler : public HandlerBase {
    public:

      // structure for holding information about subsystem and container elements
      typedef struct {
        char *name;
        char *count;
      } ElementInfoStruct;

      // structure for holding monitor point information
      typedef struct {
        char *name;
        char *count;
        char *type;
      } PointInfoStruct;

      ThresholdHandler(carma::monitor::MonitorSystemWithThreshold *system);
      virtual ~ThresholdHandler();
 
      // SAX DocumentHandler methods
      void characters(const XMLCh *const chars, const unsigned int length);
      
      void startElement(const XMLCh *const name, AttributeList &attributes);
      void endElement(const XMLCh *const name);

      void setThresholds(const ElementInfoStruct &subsystemInfo,
                         const std::vector<ElementInfoStruct> &containerInfo,
                         const PointInfoStruct &mpInfo,
                         const char *thresholdName,
                         const char *value);

      void setThreshold(const char *canonicalName,
                        const char *mpType,
                        const char *thresholdName,
                        const char *value);

      // processing methods
      void processSubsystem(AttributeList &attributes);
      void processContainer(AttributeList &attributes);
      void processPoint(AttributeList &attributes);

      void warning(const SAXParseException &ex);
      void error(const SAXParseException &ex);
      void fatalError(const SAXParseException &ex);

    private:
      ElementInfoStruct subsystemInfo_;              // subsystem information
      std::vector<ElementInfoStruct> containerInfo_; // names of containers being parsed
      PointInfoStruct pointInfo_;                    // monitor point info (name, count, data type)
      carma::monitor::MonitorSystemWithThreshold *system_; // allows threshold modification in system
    }; // end class ThresholdHandler
  } // end namespace dbms
} // end namespace carma

#endif