/**
* 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.engine.planner.logical;
import org.apache.tajo.engine.planner.AlterTablespaceNode;
/**
* This indicates a logical node type.
*/
public enum NodeType {
ROOT(LogicalRootNode.class),
EXPRS(EvalExprNode.class),
PROJECTION(ProjectionNode.class),
LIMIT(LimitNode.class),
SORT(SortNode.class),
HAVING(HavingNode.class),
GROUP_BY(GroupbyNode.class),
SELECTION(SelectionNode.class),
JOIN(JoinNode.class),
UNION(UnionNode.class),
EXCEPT(ExceptNode.class),
INTERSECT(IntersectNode.class),
TABLE_SUBQUERY(TableSubQueryNode.class),
SCAN(ScanNode.class),
PARTITIONS_SCAN(PartitionedTableScanNode.class),
BST_INDEX_SCAN(IndexScanNode.class),
STORE(StoreTableNode.class),
INSERT(InsertNode.class),
CREATE_DATABASE(CreateDatabaseNode.class),
DROP_DATABASE(DropDatabaseNode.class),
CREATE_TABLE(CreateTableNode.class),
DROP_TABLE(DropTableNode.class),
ALTER_TABLESPACE (AlterTablespaceNode.class),
ALTER_TABLE (AlterTableNode.class);
private final Class<? extends LogicalNode> baseClass;
NodeType(Class<? extends LogicalNode> baseClass) {
this.baseClass = baseClass;
}
public Class<? extends LogicalNode> getBaseClass() {
return this.baseClass;
}
}