001/**
002 * Copyright 2005-2016 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.rice.kew.util;
017
018import org.apache.commons.lang.StringUtils;
019import org.apache.commons.lang.text.StrLookup;
020import org.kuali.rice.coreservice.api.CoreServiceApiServiceLocator;
021import org.kuali.rice.core.api.config.property.ConfigContext;
022import org.kuali.rice.coreservice.api.parameter.ParameterKey;
023import org.kuali.rice.coreservice.framework.CoreFrameworkServiceLocator;
024import org.kuali.rice.kew.api.KewApiConstants;
025import org.kuali.rice.krad.util.KRADConstants;
026
027/**
028 * Looks up Strings from the Config and System Parameters.
029 *
030 * @author Kuali Rice Team (rice.collab@kuali.org)
031 */
032public class ConfigStringLookup extends StrLookup {
033        
034        private final String applicationId;
035        
036        public ConfigStringLookup() {
037        this(null);
038        }
039        
040        public ConfigStringLookup(String applicationId) {
041                this.applicationId = applicationId;
042        }
043
044    @Override
045    public String lookup(String propertyName) {
046        if (StringUtils.isBlank(propertyName)) {
047            return null;
048        }
049
050        String paramValue = null;
051        // check system parameters first
052        if (StringUtils.isBlank(applicationId)) {
053            paramValue = CoreFrameworkServiceLocator.getParameterService().getParameterValueAsString(
054                    KewApiConstants.KEW_NAMESPACE, KRADConstants.DetailTypes.ALL_DETAIL_TYPE, propertyName);
055        } else {
056            ParameterKey parameterKey = ParameterKey.create(applicationId, KewApiConstants.KEW_NAMESPACE,
057                    KRADConstants.DetailTypes.ALL_DETAIL_TYPE, propertyName);
058            paramValue = CoreServiceApiServiceLocator.getParameterRepositoryService().getParameterValueAsString(parameterKey);
059        }
060
061        if (paramValue == null) {
062            paramValue = ConfigContext.getCurrentContextConfig().getProperty(propertyName);
063        }
064        return paramValue;
065    }
066
067}