/**
* 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.drill.exec.planner.sql.handlers;
import java.io.IOException;
import net.hydromatic.optiq.tools.RelConversionException;
import net.hydromatic.optiq.tools.ValidationException;
import org.apache.drill.exec.ops.QueryContext;
import org.apache.drill.exec.physical.PhysicalPlan;
import org.apache.drill.exec.planner.sql.DirectPlan;
import org.eigenbase.sql.SqlLiteral;
import org.eigenbase.sql.SqlNode;
import org.eigenbase.sql.SqlSetOption;
public class SetOptionHandler extends AbstractSqlHandler{
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(SetOptionHandler.class);
QueryContext context;
public SetOptionHandler(QueryContext context) {
super();
this.context = context;
}
@Override
public PhysicalPlan getPlan(SqlNode sqlNode) throws ValidationException, RelConversionException, IOException {
SqlSetOption option = unwrap(sqlNode, SqlSetOption.class);
String scope = option.getScope();
String name = option.getName();
SqlNode value = option.getValue();
if(value instanceof SqlLiteral){
switch(scope.toLowerCase()){
case "session":
context.getOptions().setOption(option.getName(), (SqlLiteral) value);
break;
case "system":
context.getOptions().getSystemManager().setOption(name, (SqlLiteral) value);
break;
default:
throw new ValidationException("Invalid OPTION scope. Scope must be SESSION or SYSTEM.");
}
}else{
throw new ValidationException("Sql options can only be literals.");
}
return DirectPlan.createDirectPlan(context, true, String.format("%s updated.", name));
}
}