| /** |
| * 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 com.google.gson.annotations.Expose; |
| import com.google.gson.annotations.SerializedName; |
| import org.apache.tajo.util.TUtil; |
| |
| public class WindowFunctionExpr extends GeneralSetFunctionExpr { |
| |
| // over clause - only one of both is used. |
| @Expose @SerializedName("WindowName") |
| private String windowName; |
| @Expose @SerializedName("WindowSpec") |
| private WindowSpec windowSpec; |
| |
| public WindowFunctionExpr(GeneralSetFunctionExpr function) { |
| super(OpType.WindowFunction, function.getSignature(), function.isDistinct(), function.getParams()); |
| } |
| |
| public boolean hasWindowName() { |
| return windowName != null; |
| } |
| |
| public void setWindowName(String windowName) { |
| this.windowName = windowName; |
| } |
| |
| public String getWindowName() { |
| return this.windowName; |
| } |
| |
| public boolean hasWidowSpec() { |
| return windowSpec != null; |
| } |
| |
| public void setWindowSpec(WindowSpec windowSpec) { |
| this.windowSpec = windowSpec; |
| } |
| |
| public WindowSpec getWindowSpec() { |
| return this.windowSpec; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(windowName, windowSpec); |
| } |
| |
| @Override |
| public boolean equalsTo(Expr expr) { |
| return TUtil.checkEquals(windowName, windowSpec); |
| } |
| } |