mds_plat/metadata_engine_api/inc/mderangepropertycondition.h
changeset 60 79f826a55db2
parent 0 c53acadfccc6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mds_plat/metadata_engine_api/inc/mderangepropertycondition.h	Wed Oct 06 15:08:08 2010 +0300
@@ -0,0 +1,171 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Represents value range of property condition
+*
+*/
+
+
+#ifndef __MDERANGEPROPERTYCONDITION_H__
+#define __MDERANGEPROPERTYCONDITION_H__
+
+
+#include <mdepropertycondition.h>
+#include <mderange.h>
+
+/* Forward declarations. */
+class CMdEPropertyDef;
+class CMdCSerializationBuffer;
+
+class TMdESerializeRangePropertyCondition
+{
+public:
+	static void SerializeL( CMdCSerializationBuffer& aBuffer, 
+			const CMdEPropertyCondition& aPropertyCondition, 
+			TMdERangeType aType, const void* aMin, const void* aMax, 
+			TInt aValueSize, TMdCOffset& aFreespaceOffset );
+	static TUint32 RequiredBufferSize( TInt aValueSize );
+};
+
+/**
+ * Instances of CMdERangePropertyCondition are associated with a specific 
+ * property definition.
+ */
+template <TConditionType KConditionType, class T>
+NONSHARABLE_CLASS(CMdERangePropertyCondition) : public CMdEPropertyCondition
+	{
+public:
+	/* Constructors and destructor. */
+
+	/**
+	 * Two-phased constructor.
+	 */
+	static CMdERangePropertyCondition* NewL( const CMdEPropertyDef& aPropertyDef,
+			const TMdERange<T>& aValueRange)
+		{
+		CMdERangePropertyCondition* self =
+				CMdERangePropertyCondition::NewLC( aPropertyDef, aValueRange );
+	    CleanupStack::Pop( self );
+	    return self;
+		}
+	
+	/**
+	* Two-phased constructor.
+	*/
+	static CMdERangePropertyCondition* NewLC( const CMdEPropertyDef& aPropertyDef,
+			const TMdERange<T>& aValueRange)
+		{
+		CMdERangePropertyCondition* self =
+				new ( ELeave ) CMdERangePropertyCondition( aPropertyDef, aValueRange );
+	    CleanupStack::PushL( self );
+	    self->ConstructL();
+	    return self;
+		}
+
+
+	/**
+	 * Destructor.
+	 */
+	virtual ~CMdERangePropertyCondition()
+        {
+        }
+
+
+	/* Methods. */
+	
+	/**
+	 * Returns the range of the property condition.
+	 *
+	 * @return  Range.
+	 */
+	inline const TMdERange<T>& Range() const
+	    {
+	    return iRange;
+	    }
+
+    /**
+     * Get possible query's internal optimization flags from condition.
+     *
+     * @param aFlaga query's internal optimization flags
+     * @return last level internal optimization flags
+     */
+    TUint32 InternalQueryOptimizationFlags(TUint32& aFlags)
+    	{
+    	return CMdEPropertyCondition::InternalQueryOptimizationFlags(aFlags);
+    	}
+
+    /**
+     * Get required size of serialized buffer when this is serialized.
+     *
+     * @return required size of serialized buffer
+     */
+    TUint32 RequiredBufferSize() const
+    	{
+    	return TMdESerializeRangePropertyCondition::RequiredBufferSize( 
+    			sizeof(T) );
+    	}
+
+    /**
+     * Serialize own data to serialized buffer (correct position must be set 
+     * before calling) and return new position of serialized buffer.
+	 *
+     * @param aBuffer  serialized buffer.
+     */
+    void SerializeL(CMdCSerializationBuffer& aBuffer, 
+    		TMdCOffset& aFreespaceOffset) const
+    	{
+    	TMdESerializeRangePropertyCondition::SerializeL( aBuffer, *this, iRange.Type(), 
+    			&iRange.Min(), &iRange.Max(), sizeof(T), aFreespaceOffset );
+    	}
+
+protected:
+
+	/* Utility methods. */
+
+
+private:
+
+    /* Private methods. */
+	/**
+	 * Constructor. 
+	 *
+	 * @param aType  type of the condition node
+	 */
+    CMdERangePropertyCondition(const CMdEPropertyDef& aPropertyDef,
+        const TMdERange<T>& aValueRange)
+        : CMdEPropertyCondition(KConditionType, aPropertyDef), 
+          iRange(aValueRange)
+        {
+        }
+
+private:
+
+    /** The value range that is valid for the condition. */
+    TMdERange<T> iRange;
+    };
+
+
+/* The actual RangePropertyConditions. */
+
+#define MDE_DEFINE_RANGE_CONDITION(RangeType) \
+    typedef CMdERangePropertyCondition<EConditionTypeProperty##RangeType##Range, T##RangeType> CMdE##RangeType##RangePropertyCondition;
+
+MDE_DEFINE_RANGE_CONDITION(Int)
+MDE_DEFINE_RANGE_CONDITION(Int64)
+MDE_DEFINE_RANGE_CONDITION(Uint)
+MDE_DEFINE_RANGE_CONDITION(Real)
+MDE_DEFINE_RANGE_CONDITION(Time)
+
+#undef MDE_DEFINE_RANGE_CONDITION
+ 
+#endif  // __MDERANGEPROPERTYCONDITION_H__