/**
* 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.
*/
/*
* This source file is based on code taken from SQLLine 1.0.2
* See SQLLine notice in LICENSE
*/
package org.apache.hive.beeline;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import jline.Completor;
import jline.NullCompletor;
/**
* An abstract implementation of CommandHandler.
*
*/
public abstract class AbstractCommandHandler implements CommandHandler {
private final BeeLine beeLine;
private final String name;
private final String[] names;
private final String helpText;
private Completor[] parameterCompletors = new Completor[0];
public AbstractCommandHandler(BeeLine beeLine, String[] names, String helpText,
Completor[] completors) {
this.beeLine = beeLine;
name = names[0];
this.names = names;
this.helpText = helpText;
if (completors == null || completors.length == 0) {
parameterCompletors = new Completor[] { new NullCompletor() };
} else {
List<Completor> c = new LinkedList<Completor>(Arrays.asList(completors));
c.add(new NullCompletor());
parameterCompletors = c.toArray(new Completor[0]);
}
}
@Override
public String getHelpText() {
return helpText;
}
@Override
public String getName() {
return name;
}
@Override
public String[] getNames() {
return names;
}
@Override
public String matches(String line) {
if (line == null || line.length() == 0) {
return null;
}
String[] parts = beeLine.split(line);
if (parts == null || parts.length == 0) {
return null;
}
for (String name2 : names) {
if (name2.startsWith(parts[0])) {
return name2;
}
}
return null;
}
public void setParameterCompletors(Completor[] parameterCompletors) {
this.parameterCompletors = parameterCompletors;
}
@Override
public Completor[] getParameterCompletors() {
return parameterCompletors;
}
}