001/**
002 * Copyright 2010-2014 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.common.util.service;
017
018import java.util.List;
019import java.util.Properties;
020
021import org.kuali.common.util.CollectionUtils;
022import org.kuali.common.util.PropertyUtils;
023import org.kuali.common.util.property.PropertyLoadContext;
024import org.kuali.common.util.property.PropertyStoreContext;
025import org.kuali.common.util.property.processor.PropertyProcessor;
026import org.slf4j.Logger;
027import org.slf4j.LoggerFactory;
028
029public class DefaultPropertyService implements PropertyService {
030
031        private static final Logger logger = LoggerFactory.getLogger(DefaultPropertyService.class);
032
033        @Override
034        public Properties load(PropertyLoadContext context) {
035                Properties properties = loadProperties(context);
036                logger.info("Working with " + properties.size() + " properties total.");
037                context.initialize(properties);
038                List<PropertyProcessor> processors = CollectionUtils.toEmptyList(context.getProcessors());
039                logger.info("Processing " + properties.size() + " properties using " + processors.size() + " processors.");
040                PropertyUtils.process(properties, context.getProcessors());
041                logger.info("Returning " + properties.size() + " properties.");
042                if (logger.isDebugEnabled()) {
043                        logger.debug(PropertyUtils.toString(properties));
044                }
045                return properties;
046        }
047
048        @Override
049        public void store(PropertyStoreContext context, Properties properties) {
050                Properties duplicate = PropertyUtils.duplicate(properties);
051                context.initialize(duplicate);
052                PropertyUtils.process(duplicate, context.getProcessors());
053                PropertyUtils.store(duplicate, context.getFile(), context.getEncoding(), context.getComment());
054        }
055
056        protected Properties loadProperties(PropertyLoadContext context) {
057                Properties properties = context.init();
058                int initialSize = properties.size();
059                List<String> locations = CollectionUtils.toEmptyList(context.getLocations());
060                logger.info("Examining " + locations.size() + " property locations.");
061                int count = 0;
062                for (String location : locations) {
063                        String resolvedAndValidatedLocation = context.getLocation(location, properties);
064                        if (resolvedAndValidatedLocation != null) {
065                                Properties newProperties = PropertyUtils.load(resolvedAndValidatedLocation, context.getEncoding());
066                                properties.putAll(newProperties);
067                                count++;
068                        }
069                }
070                int newSize = properties.size();
071                int skipped = locations.size() - count;
072                logger.info("Loaded " + (newSize - initialSize) + " properties from " + count + " locations.  Skipped " + skipped + " locations.");
073                return properties;
074        }
075}