001 /* 002 * Copyright (C) 2012 eXo Platform SAS. 003 * 004 * This is free software; you can redistribute it and/or modify it 005 * under the terms of the GNU Lesser General Public License as 006 * published by the Free Software Foundation; either version 2.1 of 007 * the License, or (at your option) any later version. 008 * 009 * This software is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * You should have received a copy of the GNU Lesser General Public 015 * License along with this software; if not, write to the Free 016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 018 */ 019 package org.crsh.lang.impl.java; 020 021 import org.crsh.cli.impl.lang.Instance; 022 import org.crsh.command.BaseCommand; 023 import org.crsh.command.InvocationContext; 024 import org.crsh.shell.impl.command.spi.CommandException; 025 import org.crsh.shell.impl.command.spi.CommandMatch; 026 import org.crsh.shell.impl.command.spi.CommandInvoker; 027 028 /** 029 * @author Julien Viet 030 */ 031 abstract class BaseCommandMatch<T extends BaseCommand, C, P> extends CommandMatch<C, P> { 032 033 /** . */ 034 private final ClassShellCommand<T> baseShellCommand; 035 036 public BaseCommandMatch(ClassShellCommand<T> baseShellCommand) { 037 this.baseShellCommand = baseShellCommand; 038 } 039 040 public CommandInvoker<C, P> getInvoker() throws CommandException { 041 final T command = baseShellCommand.createCommand(); 042 return getInvoker(command); 043 } 044 045 abstract class BaseInvoker extends CommandInvoker<C, P> implements Instance<T> { 046 047 final T command; 048 049 protected BaseInvoker(T command) { 050 this.command = command; 051 } 052 053 @Override 054 public <U> U resolve(Class<U> type) { 055 if (type.equals(InvocationContext.class)) { 056 return type.cast(command.peekContext()); 057 } else { 058 return null; 059 } 060 } 061 062 @Override 063 public T get() throws Exception { 064 return command; 065 } 066 } 067 068 abstract BaseInvoker getInvoker(T command) throws CommandException; 069 }