org.apache.hadoop.hive.ql.plan.ExprNodeColumnListDesc Maven / Gradle / Ivy
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/**
* 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.hadoop.hive.ql.plan;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfo;
/**
* Dummy desc only for populating TOK_ALLCOLREF and should not be used
* outside of TypeCheckProcFactory
*/
public class ExprNodeColumnListDesc extends ExprNodeDesc {
// column or constant
final List columns = new ArrayList();
public void addColumn(ExprNodeDesc column) {
columns.add(column);
}
@Override
public ExprNodeDesc clone() {
ExprNodeColumnListDesc clone = new ExprNodeColumnListDesc();
clone.columns.addAll(columns);
return clone;
}
@Override
public boolean isSame(Object o) {
if (o instanceof ExprNodeColumnListDesc) {
return columns.equals(((ExprNodeColumnListDesc)o).columns);
}
return false;
}
@Override
public TypeInfo getTypeInfo() {
throw new IllegalStateException();
}
@Override
public void setTypeInfo(TypeInfo typeInfo) {
throw new IllegalStateException();
}
@Override
public ObjectInspector getWritableObjectInspector() {
throw new IllegalStateException();
}
@Override
public String getTypeString() {
throw new IllegalStateException();
}
@Override
public List getCols() {
throw new IllegalStateException();
}
@Override
public List getChildren() {
return new ArrayList(columns);
}
}