/**

  * 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.kew.util;

 import org.apache.commons.lang.StringUtils;

 import org.apache.commons.lang.text.StrLookup;

 import org.kuali.rice.core.api.CoreApiServiceLocator;

 import org.kuali.rice.core.api.config.property.ConfigContext;

 import org.kuali.rice.core.api.parameter.ParameterKey;

 import org.kuali.rice.core.framework.services.CoreFrameworkServiceLocator;

 import org.kuali.rice.kew.api.KewApiConstants;

 import org.kuali.rice.kim.api.KimConstants;

 import org.kuali.rice.krad.service.KRADServiceLocatorWeb;

 import org.kuali.rice.krad.util.KRADConstants;

 /**

  * Looks up Strings from the Config and System Parameters.

  *

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

  */

 public class ConfigStringLookup extends StrLookup {

         private final String applicationId;

         public ConfigStringLookup() {

         this(null);

         }

         public ConfigStringLookup(String applicationId) {

                 this.applicationId = applicationId;

         }

     @Override

     public String lookup(String propertyName) {

         if (StringUtils.isBlank(propertyName)) {

             return null;

         }

         String paramValue = null;

         // check system parameters first

         if (StringUtils.isBlank(applicationId)) {

             paramValue = CoreFrameworkServiceLocator.getParameterService().getParameterValueAsString(

                     KewApiConstants.KEW_NAMESPACE, KRADConstants.DetailTypes.ALL_DETAIL_TYPE, propertyName);

         } else {

             ParameterKey parameterKey = ParameterKey.create(applicationId, KewApiConstants.KEW_NAMESPACE,

                     KRADConstants.DetailTypes.ALL_DETAIL_TYPE, propertyName);

             paramValue = CoreApiServiceLocator.getParameterRepositoryService().getParameterValueAsString(parameterKey);

         }

         if (paramValue == null) {

             paramValue = ConfigContext.getCurrentContextConfig().getProperty(propertyName);

         }

         return paramValue;

     }

 }