| /** |
| * 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.tajo.cli.tsql.commands; |
| |
| import jline.console.completer.ArgumentCompleter; |
| import jline.console.completer.NullCompleter; |
| import jline.console.completer.StringsCompleter; |
| import org.apache.tajo.SessionVars; |
| import org.apache.tajo.cli.tsql.TajoCli; |
| import org.apache.tajo.exception.NoSuchSessionVariableException; |
| import org.apache.tajo.util.StringUtils; |
| |
| import java.sql.SQLException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import static org.apache.tajo.SessionVars.TIMEZONE; |
| import static org.apache.tajo.SessionVars.VariableMode; |
| |
| public class SetCommand extends TajoShellCommand { |
| |
| public SetCommand(TajoCli.TajoCliContext context) { |
| super(context); |
| } |
| |
| @Override |
| public String getCommand() { |
| return "\\set"; |
| } |
| |
| private void showAllSessionVars() throws SQLException { |
| for (Map.Entry<String, String> entry: client.getAllSessionVariables().entrySet()) { |
| context.getOutput().println(StringUtils.quote(entry.getKey()) + "=" + StringUtils.quote(entry.getValue())); |
| } |
| } |
| |
| private void updateSessionVariable(String key, String val) throws NoSuchSessionVariableException { |
| Map<String, String> variables = new HashMap<>(); |
| variables.put(key, val); |
| client.updateSessionVariables(variables); |
| } |
| |
| public void set(String key, String val) throws NoSuchSessionVariableException { |
| SessionVars sessionVar; |
| |
| if (TIMEZONE.name().equalsIgnoreCase(key)) { |
| key = TIMEZONE.name(); |
| } |
| |
| if (SessionVars.exists(key)) { // if the variable is one of the session variables |
| sessionVar = SessionVars.get(key); |
| |
| // is it cli-side variable? |
| if (sessionVar.getMode() == VariableMode.CLI_SIDE_VAR) { |
| context.setCliSideVar(key, val); |
| } else { |
| updateSessionVariable(key, val); |
| } |
| |
| if (SessionVars.isDeprecated(key)) { |
| context.getOutput().println("Warning: deprecated to directly use config key in TajoConf.ConfVars. " + |
| "Please execute '\\help set'."); |
| } |
| } else { |
| updateSessionVariable(key, val); |
| } |
| } |
| |
| @Override |
| public void invoke(String[] cmd) throws Exception { |
| if (cmd.length == 1) { |
| showAllSessionVars(); |
| } else if (cmd.length == 3) { |
| set(cmd[1], cmd[2]); |
| } else { |
| context.getOutput().println("usage: \\set " + getUsage()); |
| } |
| } |
| |
| @Override |
| public String getUsage() { |
| return "[[NAME] VALUE]"; |
| } |
| |
| @Override |
| public String getDescription() { |
| return "set session variable or shows all session variables"; |
| } |
| |
| @Override |
| public void printHelp() { |
| context.getOutput().println("\nAvailable Session Variables:\n"); |
| for (SessionVars var : SessionVars.values()) { |
| |
| if (var.getMode() == VariableMode.DEFAULT || |
| var.getMode() == VariableMode.CLI_SIDE_VAR || |
| var.getMode() == VariableMode.FROM_SHELL_ENV) { |
| |
| context.getOutput().println("\\set " + var.keyname() + " " + getDisplayType(var.getVarType()) + " - " + var |
| .getDescription()); |
| } |
| } |
| } |
| |
| public static String getDisplayType(Class<?> clazz) { |
| if (clazz == String.class) { |
| return "[text value]"; |
| } else if (clazz == Integer.class) { |
| return "[int value]"; |
| } else if (clazz == Long.class) { |
| return "[long value]"; |
| } else if (clazz == Float.class) { |
| return "[real value]"; |
| } else if (clazz == Boolean.class) { |
| return "[true or false]"; |
| } else { |
| return clazz.getSimpleName(); |
| } |
| } |
| |
| @Override |
| public ArgumentCompleter getArgumentCompleter() { |
| return new ArgumentCompleter( |
| new StringsCompleter(getCommand()), |
| new SessionVarCompleter(), |
| NullCompleter.INSTANCE); |
| } |
| } |