com.hazelcast.org.apache.calcite.sql.ddl.SqlDropObject 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 com.hazelcast.org.apache.calcite.sql.ddl;
import com.hazelcast.org.apache.calcite.jdbc.CalcitePrepare;
import com.hazelcast.org.apache.calcite.sql.SqlDrop;
import com.hazelcast.org.apache.calcite.sql.SqlIdentifier;
import com.hazelcast.org.apache.calcite.sql.SqlNode;
import com.hazelcast.org.apache.calcite.sql.SqlOperator;
import com.hazelcast.org.apache.calcite.sql.SqlWriter;
import com.hazelcast.org.apache.calcite.sql.parser.SqlParserPos;
import com.hazelcast.com.google.common.collect.ImmutableList;
import java.util.List;
/**
* Base class for parse trees of {@code DROP TABLE}, {@code DROP VIEW},
* {@code DROP MATERIALIZED VIEW} and {@code DROP TYPE} statements.
*/
public abstract class SqlDropObject extends SqlDrop {
public final SqlIdentifier name;
/** Creates a SqlDropObject. */
SqlDropObject(SqlOperator operator, SqlParserPos pos, boolean ifExists,
SqlIdentifier name) {
super(operator, pos, ifExists);
this.name = name;
}
@Override public List getOperandList() {
return ImmutableList.of(name);
}
@Override public void unparse(SqlWriter writer, int leftPrec, int rightPrec) {
writer.keyword(getOperator().getName()); // "DROP TABLE" etc.
if (ifExists) {
writer.keyword("IF EXISTS");
}
name.unparse(writer, leftPrec, rightPrec);
}
public void execute(CalcitePrepare.Context context) {
}
}
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