org.apache.hive.beeline.BeeLineCommandCompleter 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 org.apache.hive.beeline;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import jline.console.completer.AggregateCompleter;
import jline.console.completer.Completer;
import jline.console.completer.NullCompleter;
import jline.console.completer.StringsCompleter;
class BeeLineCommandCompleter extends AggregateCompleter {
public BeeLineCommandCompleter(Iterable handlers) {
super(getCompleters(handlers));
}
public static List getCompleters(Iterable handlers){
List completers = new LinkedList();
for (CommandHandler handler : handlers) {
String[] commandNames = handler.getNames();
if (commandNames != null) {
for (String commandName : commandNames) {
List compl = new LinkedList();
compl.add(new StringsCompleter(BeeLine.COMMAND_PREFIX + commandName));
compl.addAll(Arrays.asList(handler.getParameterCompleters()));
compl.add(new NullCompleter()); // last param no complete
completers.add(new AggregateCompleter(compl.toArray(new Completer[compl.size()])));
}
}
}
return completers;
}
}