/**
* 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 java.util.Iterator;
import java.util.Map.Entry;
import org.apache.drill.common.config.DrillConfig;
import org.apache.drill.exec.server.options.OptionValue.Kind;
import org.apache.drill.exec.server.options.OptionValue.OptionType;
import com.typesafe.config.ConfigValue;
public class DrillConfigIterator implements Iterable<OptionValue> {
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(DrillConfigIterator.class);
DrillConfig c;
public DrillConfigIterator(DrillConfig c){
this.c = c;
}
@Override
public Iterator<OptionValue> iterator() {
return new Iter(c);
}
public class Iter implements Iterator<OptionValue>{
Iterator<Entry<String, ConfigValue>> entries;
public Iter(DrillConfig c){
entries = c.entrySet().iterator();
}
@Override
public boolean hasNext() {
return entries.hasNext();
}
@Override
public OptionValue next() {
Entry<String, ConfigValue> e = entries.next();
OptionValue v = new OptionValue();
v.name = e.getKey();
ConfigValue cv = e.getValue();
v.type = OptionType.BOOT;
switch(cv.valueType()){
case BOOLEAN:
v.kind = Kind.BOOLEAN;
v.bool_val = (Boolean) cv.unwrapped();
break;
case LIST:
case OBJECT:
case STRING:
v.string_val = cv.render();
break;
case NUMBER:
v.kind = Kind.LONG;
v.num_val = ((Number)cv.unwrapped()).longValue();
break;
}
return v;
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
}
}