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.devtools.jpa.eclipselink.conv.parser.helper.resolver;
017
018import japa.parser.ast.ImportDeclaration;
019import japa.parser.ast.expr.NameExpr;
020import japa.parser.ast.expr.QualifiedNameExpr;
021import japa.parser.ast.expr.SingleMemberAnnotationExpr;
022import japa.parser.ast.expr.StringLiteralExpr;
023import org.apache.commons.logging.Log;
024import org.apache.commons.logging.LogFactory;
025import org.apache.ojb.broker.metadata.CollectionDescriptor;
026import org.apache.ojb.broker.metadata.DescriptorRepository;
027import org.apache.ojb.broker.metadata.FieldHelper;
028import org.kuali.rice.devtools.jpa.eclipselink.conv.ojb.OjbUtil;
029import org.kuali.rice.devtools.jpa.eclipselink.conv.parser.helper.NodeData;
030
031import java.util.Collection;
032
033public class OrderByResolver extends AbstractMappedFieldResolver {
034    private static final Log LOG = LogFactory.getLog(OrderByResolver.class);
035
036    public static final String PACKAGE = "javax.persistence";
037    public static final String SIMPLE_NAME = "OrderBy";
038
039    public OrderByResolver(Collection<DescriptorRepository> descriptorRepositories) {
040        super(descriptorRepositories);
041    }
042    @Override
043    public String getFullyQualifiedName() {
044        return PACKAGE + "." + SIMPLE_NAME;
045    }
046
047    /** gets the annotation but also adds an import in the process if a Convert annotation is required. */
048    @Override
049    protected NodeData getAnnotationNodes(String enclosingClass, String fieldName, String mappedClass) {
050        final CollectionDescriptor cld = OjbUtil.findCollectionDescriptor(mappedClass, fieldName, descriptorRepositories);
051        if (cld != null) {
052            Collection<FieldHelper> orderBy = cld.getOrderBy();
053            if (orderBy != null && !orderBy.isEmpty()) {
054                String orderByStr = "";
055                for (FieldHelper fh : orderBy) {
056                    orderByStr += fh.name + (fh.isAscending ? "" : " DESC") + ", ";
057                }
058                orderByStr = orderByStr.replaceAll(", $", "");
059                return new NodeData(new SingleMemberAnnotationExpr(new NameExpr(SIMPLE_NAME), new StringLiteralExpr(orderByStr)),
060                        new ImportDeclaration(new QualifiedNameExpr(new NameExpr(PACKAGE), SIMPLE_NAME), false, false));
061            }
062        }
063        return null;
064    }
065}