| /** |
| * 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.tajo.algebra; |
| |
| import com.google.common.base.Objects; |
| import org.apache.tajo.util.TUtil; |
| |
| public class Window extends UnaryOperator { |
| private WindowDefinition [] definitions; |
| |
| public Window(WindowDefinition [] definitions) { |
| super(OpType.Window); |
| this.definitions = definitions; |
| } |
| |
| public WindowDefinition [] getWindowDefinitions() { |
| return definitions; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(definitions); |
| } |
| |
| @Override |
| boolean equalsTo(Expr expr) { |
| Window another = (Window) expr; |
| return TUtil.checkEquals(definitions, another.definitions); |
| } |
| |
| public static class WindowDefinition { |
| private String windowName; |
| private WindowSpecExpr windowSpec; |
| |
| public WindowDefinition(String windowName, WindowSpecExpr spec) { |
| this.windowName = windowName; |
| this.windowSpec = spec; |
| } |
| |
| public String getWindowName() { |
| return windowName; |
| } |
| |
| public WindowSpecExpr getWindowSpec() { |
| return windowSpec; |
| } |
| } |
| } |