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.groovy.closure; 020 021 import org.crsh.shell.impl.command.spi.CommandException; 022 import org.crsh.shell.impl.command.spi.CommandInvoker; 023 import org.crsh.command.InvocationContext; 024 import org.crsh.shell.impl.command.pipeline.PipeLine; 025 026 import java.io.IOException; 027 import java.util.Arrays; 028 import java.util.LinkedList; 029 030 /** @author Julien Viet */ 031 public class PipeLineInvoker { 032 033 /** . */ 034 private final PipeLineClosure closure; 035 036 /** . */ 037 private final Object[] args; 038 039 public PipeLineInvoker(PipeLineClosure closure, Object[] args) { 040 this.closure = closure; 041 this.args = args; 042 } 043 044 public void invoke(InvocationContext<Object> context) throws IOException, CommandException { 045 046 // 047 PipeLineInvocationContext inner = new PipeLineInvocationContext(context); 048 LinkedList<CommandInvoker> pipe = closure.resolve2(args); 049 CommandInvoker[] array = pipe.toArray(new CommandInvoker[pipe.size()]); 050 PipeLine pipeLine = new PipeLine(array); 051 052 // 053 try { 054 pipeLine.open(inner); 055 pipeLine.flush(); 056 } finally { 057 // This is on purpose 058 pipeLine.close(); 059 } 060 } 061 062 @Override 063 public String toString() { 064 return "PipeLineInvoker[" + closure + "](" + Arrays.toString(args) + ")"; 065 } 066 }