/**
    * Copyright 2005-2013 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.api;
  
  import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
  import org.kuali.rice.krms.api.engine.Engine;
  import org.kuali.rice.krms.api.engine.expression.ComparisonOperatorService;
  import org.kuali.rice.krms.api.repository.RuleRepositoryService;
  import org.kuali.rice.krms.api.repository.type.KrmsTypeRepositoryService;
  
  import javax.xml.namespace.QName;
  
  /**
   * A static service locator which aids in locating the various remotable services that form the Kuali Rule Management System API.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class KrmsApiServiceLocator {
  
  	public static final String ENGINE = "rice.krms.engine";
  	public static final QName RULE_REPOSITORY_SERVICE = new QName(KrmsConstants.Namespaces.KRMS_NAMESPACE_2_0, "ruleRepositoryService");
      public static final QName KRMS_TYPE_REPOSITORY_SERVICE = new QName(KrmsConstants.Namespaces.KRMS_NAMESPACE_2_0, "krmsTypeRepositoryService");
      public static final String COMPARISON_SERVICE = "comparisonOperatorService";
  
      /**
       * Get the named service
       * @param serviceName
       * @param <T>
       * @return  <T> T
       */
      static <T> T getService(String serviceName) {
          return GlobalResourceLoader.<T>getService(QName.valueOf(serviceName));
      }
  
      /**
       * Get the qnamed service
       * @param serviceName
       * @param <T>
       * @return <T> T
       */
      static <T> T getService(QName serviceName) {
          return GlobalResourceLoader.<T>getService(serviceName);
      }
  
      /**
       * Return the {@link Engine}
       * @return {@link Engine}
       */
      public static Engine getEngine() {
          return getService(ENGINE);
      }
  
      /**
       * Return the {@link RuleRepositoryService}
       * @return {@link RuleRepositoryService}
       */
      public static RuleRepositoryService getRuleRepositoryService() {
      	return getService(RULE_REPOSITORY_SERVICE);
      }
  
      /**
       * Return the {@link KrmsTypeRepositoryService}
       * @return {@link KrmsTypeRepositoryService}
       */
      public static KrmsTypeRepositoryService getKrmsTypeRepositoryService() {
          return getService(KRMS_TYPE_REPOSITORY_SERVICE);
      }
  
      /**
       * Return the {@link ComparisonOperatorService}
       * @return {@link ComparisonOperatorService}
       */
      public static ComparisonOperatorService getComparisonOperatorService() {
          return getService(COMPARISON_SERVICE);
      }
  }