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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.drill.exec.server.options;
import com.google.common.collect.Iterables;
import com.google.common.collect.Maps;
import org.apache.drill.exec.server.options.OptionValue.OptionType;
import org.eigenbase.sql.SqlLiteral;
import java.util.Iterator;
import java.util.Map;
public class SessionOptionManager implements OptionManager{
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(SessionOptionManager.class);
private Map<String, OptionValue> options = Maps.newConcurrentMap();
private OptionManager systemOptions;
public SessionOptionManager(OptionManager systemOptions) {
super();
this.systemOptions = systemOptions;
}
@Override
public Iterator<OptionValue> iterator() {
return Iterables.concat(systemOptions, options.values()).iterator();
}
@Override
public OptionValue getOption(String name) {
OptionValue opt = options.get(name);
if(opt == null && systemOptions != null){
return systemOptions.getOption(name);
}else{
return opt;
}
}
@Override
public void setOption(OptionValue value) {
systemOptions.getAdmin().validate(value);
setValidatedOption(value);
}
@Override
public void setOption(String name, SqlLiteral literal, OptionType type) {
OptionValue val = systemOptions.getAdmin().validate(name, literal);
val.type = type;
setValidatedOption(val);
}
private void setValidatedOption(OptionValue value) {
if (value.type == OptionType.SESSION) {
options.put(value.name, value);
} else {
systemOptions.setOption(value);
}
}
@Override
public OptionAdmin getAdmin() {
return systemOptions.getAdmin();
}
@Override
public OptionManager getSystemManager() {
return systemOptions;
}
@Override
public OptionList getOptionList() {
OptionList list = new OptionList();
for (OptionValue o : options.values()) {
list.add(o);
}
return list;
}
}
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