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diff --git a/neethi/include/neethi_engine.h b/neethi/include/neethi_engine.h
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+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef NEETHI_ENGINE_H
+#define NEETHI_ENGINE_H
+
+/*neethis_engine.c contains all the useful functions
+ * for dealing with a neethi_policy object
+ */
+
+
+
+/**
+  * @file neethi_engine.h
+  * @contains neethi_policy creation logic.
+  */
+
+#include <axis2_defines.h>
+#include <axutil_env.h>
+#include <neethi_includes.h>
+#include <neethi_operator.h>
+#include <neethi_policy.h>
+#include <neethi_all.h>
+#include <neethi_exactlyone.h>
+#include <neethi_reference.h>
+#include <neethi_registry.h>
+#include <neethi_assertion.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    /**
+     * Given an axiom model this function will return 
+     * a neethi_policy object.
+     * @param env pointer to environment struct
+     * @param node to an axiom_node
+     * @param node to an axiom_element
+     * @return pointer to a neethi_policy_t struct
+     */    
+    
+    AXIS2_EXTERN neethi_policy_t *AXIS2_CALL
+    neethi_engine_get_policy(
+        const axutil_env_t * env,
+        axiom_node_t * node,
+        axiom_element_t * element);
+
+     /**
+     * Given a neethi_policy object this will return the
+     * normalized policy object.     
+     * @param env pointer to environment struct
+     * @param deep to specify whether assertion level normalization
+       needed.  
+     * @param neethi_policy_t to the policy which is not
+       normalized. 
+     * @return pointer to a normalized neethi_policy_t struct
+     */   
+
+    /*This function will return a new neethi_policy struct.
+      So it is callers responsibility to free the neethi_policy
+      which is passed as an argument. */
+
+    AXIS2_EXTERN neethi_policy_t *AXIS2_CALL
+    neethi_engine_get_normalize(
+        const axutil_env_t * env,
+        axis2_bool_t deep,
+        neethi_policy_t * neethi_policy);
+
+    /**
+     * Given a neethi_policy object this will return the
+     * normalized policy object.     
+     * @param env pointer to environment struct
+     * @param deep to specify whether assertion level normalization
+       needed.  
+     * @param neethi_policy_t to the policy which is not
+       normalized. 
+     * @param registry neethi_registry_t struct which contains
+       policy objects. 
+     * @return pointer to a normalized neethi_policy_t struct
+     */   
+
+    /*This function will return a new neethi_policy struct.
+      So it is callers responsibility to free the neethi_policy
+      which is passed as an argument. */
+
+
+    AXIS2_EXTERN neethi_policy_t *AXIS2_CALL
+    neethi_engine_normalize(
+        const axutil_env_t * env,
+        neethi_policy_t * neethi_policy,
+        neethi_registry_t * registry,
+        axis2_bool_t deep);
+
+    /*Givnen to normalized policy objects this function will
+      retun the merged policy object.
+    * @param env pointer to environment struct
+    * @param neethi_policy1 pointer neethi_policy_t struct as an
+    * input for merge.
+    * @param neethi_policy2 pointer neethi_policy_t struct as an
+    * input for merge.
+    * @return pointer to a merged policy of both inputs.*/
+
+    /*The input for this function should be two normalized policies
+      otherwise the output may be wrong.*/
+
+    AXIS2_EXTERN neethi_policy_t *AXIS2_CALL
+    neethi_engine_merge(
+        const axutil_env_t * env,
+        neethi_policy_t * neethi_policy1,
+        neethi_policy_t * neethi_policy2);
+
+    /*Given a policy object this function will give the 
+     * corresponding axiom model for that policy object.
+     * @param policy pointer to the neethi_policy_t struct.
+     * @param env pointer to environment struct
+     */
+
+    AXIS2_EXTERN axiom_node_t *AXIS2_CALL
+    neethi_engine_serialize(
+        neethi_policy_t * policy,
+        const axutil_env_t * env);
+
+    /** @} */
+#ifdef __cplusplus
+}
+#endif
+
+#endif                          /* NEETHI_ENGINE_H */