/**

  * Copyright 2005-2011 The Kuali Foundation

  *

  * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php

  *

  * 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.

  */

 package org.kuali.rice.krms.impl.repository;

 import org.kuali.rice.krms.api.repository.function.FunctionDefinition;

 /**

  * This is the interface for accessing KRMS repository Function related bos 

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  *

  */

 public interface FunctionBoService {

     /**

      * This will create a {@link FunctionDefinition} exactly like the function passed in.

      *

      * @param function  The Function to create

      * @throws IllegalArgumentException if the function is null

      * @throws IllegalStateException if the function already exists in the system

      */

         public FunctionDefinition createFunction(FunctionDefinition function);

     /**

      * This will update an existing {@link FunctionDefinition}.

      *

      * @param function  The Function to update

      * @throws IllegalArgumentException if the function is null

      * @throws IllegalStateException if the function does not exist in the system

      */        

         public void updateFunction(FunctionDefinition function);

     /**

      * Retrieves a Function from the repository based on the given function id.

      *

      * @param functionId the id of the Function to retrieve

      * @return a {@link FunctionDefinition} identified by the given functionId.  

      * A null reference is returned if an invalid or non-existent functionId is supplied.

      */

         public FunctionDefinition getFunctionById(String functionId);

     /**

      * Retrieves a Function from the repository based on the provided function name

      * and namespace.

      *

      * @param name the name of the Function to retrieve.

      * @param namespace the namespace that the Function is under.

      * @return a {@link FunctionDefinition} identified by the given name and namespace.  

      * A null reference is returned if an invalid or non-existent function name and

      * namespace combination is supplied.

      */

         public FunctionDefinition getFunctionByNameAndNamespace(String name, String namespace);

 }