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.ken.service.impl;
017
018import static org.kuali.rice.core.api.criteria.PredicateFactory.equal;
019import static org.kuali.rice.core.api.criteria.PredicateFactory.greaterThanOrEqual;
020
021import java.util.Collection;
022import java.util.List;
023
024import org.apache.commons.lang.StringUtils;
025import org.kuali.rice.core.api.criteria.QueryByCriteria;
026import org.kuali.rice.core.api.exception.RiceIllegalArgumentException;
027import org.kuali.rice.ken.bo.NotificationBo;
028import org.kuali.rice.ken.bo.NotificationContentTypeBo;
029import org.kuali.rice.ken.service.NotificationContentTypeService;
030import org.kuali.rice.krad.data.DataObjectService;
031
032/**
033 * NotificationContentTypeService implementation - uses the dataObjectService to get at the underlying data in the stock DBMS.
034 * @author Kuali Rice Team (rice.collab@kuali.org)
035 */
036public class NotificationContentTypeServiceImpl implements NotificationContentTypeService {
037
038    /** Service to persist data to and from the datasource. */
039    private DataObjectService dataObjectService;
040
041    /**
042     * Constructs a NotificationContentTypeServiceImpl.java.
043     * @param dataObjectService Service to persist data to and from the datasource.
044     */
045    public NotificationContentTypeServiceImpl(DataObjectService dataObjectService) {
046        this.dataObjectService = dataObjectService;
047    }
048
049    /**
050     * @see org.kuali.rice.ken.service.NotificationContentTypeService#getNotificationContentType(java.lang.String)
051     */
052    //this is the one need to tweek on criteria
053    @Override
054    public NotificationContentTypeBo getNotificationContentType(String name) {
055        if (StringUtils.isBlank(name)) {
056            throw new RiceIllegalArgumentException("name is blank");
057        }
058
059        QueryByCriteria.Builder criteria = QueryByCriteria.Builder.create();
060        criteria.setPredicates(equal("name", name), equal("current", new Boolean(true)));
061        List<NotificationContentTypeBo> coll= dataObjectService.findMatching(NotificationContentTypeBo.class, criteria.build()).getResults();
062        if (coll.isEmpty()) {
063            return null;
064        } else {
065            return coll.get(0);
066        }
067    }
068
069    /**
070     * Returns the highest version found for the given name or negative one if the name is not found.
071     * @param name the name to query for
072     * @return the highest version number found or negative one if the name is not found.
073     */
074    protected int findHighestContentTypeVersion(String name) {
075
076        int highestVersion = -1;
077
078        QueryByCriteria.Builder criteria = QueryByCriteria.Builder.create();
079        criteria.setPredicates(equal("name", name));
080        List<NotificationContentTypeBo> ntfyCntTypes = dataObjectService.findMatching(NotificationContentTypeBo.class, criteria.build()).getResults();
081
082        for (NotificationContentTypeBo ntfyCntType : ntfyCntTypes) {
083            if (ntfyCntType.getVersion() > highestVersion) {
084                highestVersion = ntfyCntType.getVersion();
085            }
086        }
087
088        return highestVersion;
089    }
090
091    /**
092     * @see org.kuali.rice.ken.service.NotificationContentTypeService#saveNotificationContentType(org.kuali.rice.ken.bo.NotificationContentTypeBo)
093     */
094    @Override
095    public void saveNotificationContentType(NotificationContentTypeBo contentType) {
096        NotificationContentTypeBo previous = getNotificationContentType(contentType.getName());
097        if (previous != null) {
098            previous.setCurrent(false);
099            previous = dataObjectService.save(previous);
100        }
101        int lastVersion = findHighestContentTypeVersion(contentType.getName());
102        NotificationContentTypeBo next;
103        if (contentType.getId() == null) {
104            next = contentType;
105        } else {
106            next = new NotificationContentTypeBo();
107            next.setName(contentType.getName());
108            next.setDescription(contentType.getDescription());
109            next.setNamespace(contentType.getNamespace());
110            next.setXsd(contentType.getXsd());
111            next.setXsl(contentType.getXsl());
112        }
113
114        next.setVersion(lastVersion + 1);
115        next.setCurrent(true);
116        next = dataObjectService.save(next);
117
118        // update all the old references
119        if (previous != null) {
120            Collection<NotificationBo> ns = getNotificationsOfContentType(previous);
121            for (NotificationBo n: ns) {
122                n.setContentType(next);
123                dataObjectService.save(n);
124            }
125        }
126    }
127
128    /**
129     * Get notifications based on content type.
130     * @param ct Notification content type
131     * @return  a collection of {@link NotificationBo} for the given content type
132     */
133    protected Collection<NotificationBo> getNotificationsOfContentType(NotificationContentTypeBo ct) {
134        QueryByCriteria.Builder criteria = QueryByCriteria.Builder.create();
135        criteria.setPredicates(equal("contentType.id", ct.getId()));
136        return dataObjectService.findMatching(NotificationBo.class, criteria.build()).getResults();
137    }
138
139    /**
140     * @see org.kuali.rice.ken.service.NotificationContentTypeService#getAllCurrentContentTypes()
141     */
142    @Override
143    public Collection<NotificationContentTypeBo> getAllCurrentContentTypes() {
144        QueryByCriteria.Builder criteria = QueryByCriteria.Builder.create();
145        criteria.setPredicates(equal("current", new Boolean(true)));
146
147        return dataObjectService.findMatching(NotificationContentTypeBo.class, criteria.build()).getResults();
148    }
149
150    /**
151     * @see org.kuali.rice.ken.service.NotificationContentTypeService#getAllContentTypes()
152     */
153    @Override
154    public Collection<NotificationContentTypeBo> getAllContentTypes() {
155        QueryByCriteria.Builder criteria = QueryByCriteria.Builder.create();
156        criteria.setPredicates(greaterThanOrEqual("version", 0));
157
158        return dataObjectService.findMatching(NotificationContentTypeBo.class, criteria.build()).getResults();
159    }
160
161    /**
162     * Sets the data object service
163     * @param dataObjectService {@link DataObjectService}
164     */
165    public void setDataObjectService(DataObjectService dataObjectService) {
166        this.dataObjectService = dataObjectService;
167    }
168}