| /** |
| * 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.plan.expr; |
| |
| import com.google.gson.annotations.Expose; |
| import org.apache.tajo.datum.Datum; |
| import org.apache.tajo.datum.NullDatum; |
| import org.apache.tajo.storage.Tuple; |
| import org.apache.tajo.type.Type; |
| import org.apache.tajo.type.TypeFactory; |
| import org.apache.tajo.util.StringUtils; |
| import org.apache.tajo.util.TUtil; |
| |
| import java.util.Arrays; |
| |
| public class RowConstantEval extends ValueSetEval { |
| @Expose Datum [] values; |
| |
| public RowConstantEval(Datum [] values) { |
| super(EvalType.ROW_CONSTANT); |
| this.values = values; |
| } |
| |
| @Override |
| public Type getValueType() { |
| return TypeFactory.create(values[0].type()); |
| } |
| |
| @Override |
| public String getName() { |
| return "ROW"; |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public Datum eval(Tuple tuple) { |
| super.eval(tuple); |
| return NullDatum.get(); |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + Arrays.hashCode(values); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof RowConstantEval) { |
| RowConstantEval other = (RowConstantEval) obj; |
| return TUtil.checkEquals(values, other.values); |
| } |
| |
| return false; |
| } |
| |
| public String toString() { |
| return StringUtils.join(values); |
| } |
| |
| @Override |
| public Object clone() throws CloneNotSupportedException { |
| RowConstantEval rowConstantEval = (RowConstantEval) super.clone(); |
| if (values != null) { |
| rowConstantEval.values = new Datum[values.length]; |
| System.arraycopy(values, 0, rowConstantEval.values, 0, values.length); |
| } |
| return rowConstantEval; |
| } |
| |
| @Override |
| public Datum[] getValues() { |
| return values; |
| } |
| } |