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#ifndef Pegasus_WQLSimplePropertySource_h
#define Pegasus_WQLSimplePropertySource_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/WQL/WQLPropertySource.h>
#include <Pegasus/Common/HashTable.h>

PEGASUS_NAMESPACE_BEGIN

/** This class provides a simple property source implementation mainly for
    testing purposes only.

    It maintains a hash table which maps property names to values (represented
    using WQLOperand objects).

    This class implements getValue() by simply looking up the property name
    in the map and fetching the corresponding value.

    The addValue() method is used to add property-name/value pairs to the 
    internal map.

    Since this class is intended for testing purposes, all of the methods
    are inline to avoid making the library any larger.
*/
class WQLSimplePropertySource : public WQLPropertySource
{
public:

    /** Default constructor.
    */
    WQLSimplePropertySource()
    {
    }

    /** Virtual destructor.
    */
    virtual ~WQLSimplePropertySource()
    {
    }

    /** Get the value for the property with the given name. Simply looks up
        the property name in the internal map to fetch the value.
    
        @param propertyName name of property to be retrieved.
        @param value value of property.
        @return true is such a property exists and false otherwise.
    */
    virtual Boolean getValue(
    const CIMName& propertyName, 
    WQLOperand& value) const
    {
        return _map.lookup(propertyName.getString(), value);
    }

    /** Add the given propert-name/value pair to the internal map.
    
        @param propertyName name of property.
        @param value value of property.
        @return true if no such property already existed and false otherwise.
    */
    Boolean addValue(
    const CIMName& propertyName, 
    const WQLOperand& value)
    {
        return _map.insert(propertyName.getString(), value);
    }

private:

    typedef HashTable<
    String, WQLOperand, EqualFunc<String>, HashFunc<String> > Map;

    Map _map;
};

PEGASUS_NAMESPACE_END

#endif /* Pegasus_WQLSimplePropertySource_h */