diff -r 000000000000 -r c53acadfccc6 mds_plat/metadata_engine_api/inc/mdepropertycondition.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mds_plat/metadata_engine_api/inc/mdepropertycondition.h	Mon Jan 18 20:34:07 2010 +0200
@@ -0,0 +1,116 @@
+/*
+* 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:  Represent property condition
+*
+*/
+
+#ifndef __MDEPROPERTYCONDITION_H__
+#define __MDEPROPERTYCONDITION_H__
+
+#include <mdecondition.h>
+
+/* Forward declarations. */
+class CMdEPropertyDef;
+class CMdCSerializationBuffer;
+
+/**
+ * CMdEPropertyCondition is the base class for all property conditions.
+ * Instances of CMdEPropertyCondition and its subclasses are always associated
+ * with a property definition.
+ */
+NONSHARABLE_CLASS(CMdEPropertyCondition) : public CMdECondition
+	{
+public:
+
+    /* Types. */
+    
+	/**
+	 * Two-phased constructor.
+	 */
+	static CMdEPropertyCondition* NewL( const CMdEPropertyDef& aPropertyDef );
+
+   /**
+    * Two-phased constructor.
+    */
+   static CMdEPropertyCondition* NewLC( const CMdEPropertyDef& aPropertyDef );
+
+    
+	/**
+	 * Destructor.
+	 */
+	virtual ~CMdEPropertyCondition();
+
+
+	/* Methods. */
+
+    /** 
+     * Returns the property definition of the condition.
+     *
+     * @return  Property definition.
+     */
+    IMPORT_C const CMdEPropertyDef& PropertyDef() const;
+
+    /**
+     * 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);
+
+    /**
+     * Get required size of serialized buffer when this is serialized.
+     *
+     * @return required size of serialized buffer
+     */
+    virtual TUint32 RequiredBufferSize() const;
+   
+    /**
+     * Serialize own data to serialized buffer (correct position must be set 
+     * before calling) and return new position of serialized buffer.
+	 *
+     * @param aBuffer  serialized buffer.
+     */
+    virtual void SerializeL(CMdCSerializationBuffer& aBuffer,
+    		TMdCOffset& aFreespaceOffset) const;
+   
+protected:
+
+	/**
+	 * Constructor for a condition that tests the existence of properties.
+	 *
+	 * @param aPropertDef  Property definition.
+	 */
+	CMdEPropertyCondition(const CMdEPropertyDef& aPropertyDef);
+
+    /**
+     * Second-phase constructor.
+     */
+    void ConstructL();
+
+    /**
+	 * Constructor that sets the condition type as well.
+	 *
+	 * @param aType  Type of the condition node.
+	 */
+	CMdEPropertyCondition(TConditionType aConditionType, 
+                          const CMdEPropertyDef& aPropertyDef);
+
+protected:
+
+    /** The property this condition operates on. */
+    const CMdEPropertyDef& iPropertyDef;
+    };
+
+#endif  // __MDEPROPERTYCONDITION_H__