| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache 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.apache.org/licenses/LICENSE-2.0 |
| * |
| * 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.apache.openjpa.persistence.query; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * Denotes NEW fully.qualified.class.name(arg1, arg2,...) |
| * |
| * @author Pinaki Poddar |
| * |
| */ |
| public class NewInstance extends AbstractVisitable |
| implements SelectItem, Visitable { |
| |
| private static final long serialVersionUID = 1L; |
| private final Class _cls; |
| private List<SelectItem> _args; |
| NewInstance(Class cls, SelectItem...args) { |
| _cls = cls; |
| if (args != null) { |
| _args = Arrays.asList(args); |
| } |
| } |
| |
| @Override |
| public OrderByItem asc() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public OrderByItem desc() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| |
| @Override |
| public String asProjection(AliasContext ctx) { |
| StringBuilder tmp = new StringBuilder("NEW ").append(_cls.getName()) |
| .append("("); |
| if (_args == null || _args.isEmpty()) |
| return tmp.append(")").toString(); |
| int i = 0; |
| int N = _args.size(); |
| for (SelectItem arg : _args) { |
| i++; |
| tmp.append(((Visitable)arg).asProjection(ctx)) |
| .append(i == N ? ")" : ","); |
| } |
| return tmp.toString(); |
| } |
| } |