diff -r 000000000000 -r a02c979e8dfd srcanaapps/apiquerytool/com.nokia.s60tools.apiquery/src/com/nokia/s60tools/apiquery/shared/datatypes/FieldMappingRules.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/srcanaapps/apiquerytool/com.nokia.s60tools.apiquery/src/com/nokia/s60tools/apiquery/shared/datatypes/FieldMappingRules.java	Sat Jan 09 10:04:11 2010 +0530
@@ -0,0 +1,78 @@
+/*
+* Copyright (c) 2007 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:
+*
+*/
+ 
+package com.nokia.s60tools.apiquery.shared.datatypes;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+import com.nokia.s60tools.apiquery.shared.resources.Messages;
+
+/**
+ * Stores field mapping rules that can be used to
+ * map API detail field descriptions to XML 
+ * and vice versa.
+ */
+public class FieldMappingRules {
+
+	/**
+	 * Storage for the mapping rules.
+	 */
+	Map <String, String> ruleMap;
+	
+	/**
+	 * Constructor
+	 */
+	public FieldMappingRules(){
+		ruleMap = new HashMap<String, String>();
+	}
+	
+	/**
+	 * Adds a new rule to the mapping rules.
+	 * @param mapFromStr String to map from.
+	 * @param mapToStr String to map into.
+	 */
+	public void addRule(String mapFromStr, String mapToStr){
+		ruleMap.put(mapFromStr, mapToStr);
+	}
+	
+	/**
+	 * Gets the string that was mapped into the given parameter string.
+	 * @param keyStr Key string to ask mapped result for.
+	 * @return Returns result string or throws <code>IllegalArgumentException</code>
+	 *         if no .
+	 * @throws java.lang.IllegalArgumentException
+	 * @see java.lang.IllegalArgumentException
+	 */
+	public String mapFrom(String keyStr){
+		String resultStr = ruleMap.get(keyStr);
+		if(resultStr == null){
+			throw new IllegalArgumentException(Messages.getString("FieldMappingRules.NoMappingRule_ErrMsg") + keyStr); //$NON-NLS-1$
+		}
+		return resultStr;
+	}
+	
+	/**
+	 * Returns key set that this field mapping rule instance 
+	 * has mapping rules for.
+	 * @return Set of String key values.
+	 */
+	public Set<String> getMapFromKeySet(){
+		return ruleMap.keySet();
+	}
+}