ReadDataComponent.h

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#ifndef READDATACOMPONENT_H_
#define READDATACOMPONENT_H_

#include "component/Behavior.h"
#include "data/DataAccessor.h"
#include "data/StrValue.h"

class MissionItem;
class MissionNode;
class Module;
class ValueClause;

class ReadDataComponent : public Behavior
{
public:

    static ReadDataComponent* Instance( MissionNode* node, const Str& itemName,
                                        MissionItem* parent, const Module* module, Logger& logger );

    ReadDataComponent( const Str& prefix );

    virtual ~ReadDataComponent();

    void initialize( void );

    void initializeReaders( void );

    void run();

    bool isSatisfied();

    bool runIfUnsatisfied();

    void preempted();

    void uninitialize( void );

    static Behavior* CreateBehavior( const Str& prefix, const Module* module );

protected:

    // Specific sensors which are read
    FlexArray<Component*> sensors_;

    // Names of Variables that are read - converted to readers by initializeReaders
    FlexArray<Str*> readerNames_;

    // Variables that are read - not using readers_ because of readers below
    FlexArray<DataReader*> varReaders_;

    // Reads in the value to test the interval against - null if time used
    DataReader *intervalValueReader_;

    // Last value the interval was tested against.
    double lastIntervalValue_;

    // Reads in the interval
    ValueClause *intervalSettingClause_;

    bool intervalTriggered_;

    bool initializedReaders_;

    DataAccessor::RequestStrategy requestStrategy_;

    static const StrValue NO_VALUE;

    void requestData( bool requestingData );

private:
    // Note that the copy constructor below is private and not given a body.
    // Any attempt to call it will return a compiler error.
    ReadDataComponent( const ReadDataComponent& old ); // disallow copy constructor

};

#endif /*READDATACOMPONENT_H_*/