| /* |
| * 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 QualifiedAsteriskExpr extends Expr { |
| private final static String ASTERISK = "*"; |
| @Expose @SerializedName("Qualifier") |
| private String qualifier; |
| |
| public QualifiedAsteriskExpr() { |
| super(OpType.Asterisk); |
| } |
| |
| public QualifiedAsteriskExpr(String qualifier) { |
| this(); |
| setQualifier(qualifier); |
| } |
| |
| public boolean hasQualifier() { |
| return this.qualifier != null; |
| } |
| |
| public void setQualifier(String qualifier) { |
| this.qualifier = qualifier; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(qualifier, ASTERISK); |
| } |
| |
| @Override |
| boolean equalsTo(Expr expr) { |
| QualifiedAsteriskExpr another = (QualifiedAsteriskExpr) expr; |
| return TUtil.checkEquals(this.qualifier, another.qualifier); |
| } |
| |
| public String getQualifier() { |
| return qualifier; |
| } |
| |
| @Override |
| public String toString() { |
| return hasQualifier() ? qualifier + "." + ASTERISK : ASTERISK; |
| } |
| |
| @Override |
| public QualifiedAsteriskExpr clone() throws CloneNotSupportedException { |
| QualifiedAsteriskExpr qualifiedAsteriskExpr = (QualifiedAsteriskExpr) super.clone(); |
| qualifiedAsteriskExpr.qualifier = qualifier; |
| return qualifiedAsteriskExpr; |
| } |
| } |