[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | package org.apache.hadoop.record.compiler.ant; |
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| 19 | |
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| 20 | import java.io.File; |
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| 21 | import java.util.ArrayList; |
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| 22 | import org.apache.hadoop.record.compiler.generated.Rcc; |
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| 23 | import org.apache.tools.ant.BuildException; |
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| 24 | import org.apache.tools.ant.DirectoryScanner; |
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| 25 | import org.apache.tools.ant.Project; |
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| 26 | import org.apache.tools.ant.Task; |
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| 27 | import org.apache.tools.ant.types.FileSet; |
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| 28 | |
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| 29 | /** |
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| 30 | * Hadoop record compiler ant Task |
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| 31 | *<p> This task takes the given record definition files and compiles them into |
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| 32 | * java or c++ |
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| 33 | * files. It is then up to the user to compile the generated files. |
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| 34 | * |
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| 35 | * <p> The task requires the <code>file</code> or the nested fileset element to be |
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| 36 | * specified. Optional attributes are <code>language</code> (set the output |
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| 37 | * language, default is "java"), |
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| 38 | * <code>destdir</code> (name of the destination directory for generated java/c++ |
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| 39 | * code, default is ".") and <code>failonerror</code> (specifies error handling |
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| 40 | * behavior. default is true). |
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| 41 | * <p><h4>Usage</h4> |
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| 42 | * <pre> |
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| 43 | * <recordcc |
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| 44 | * destdir="${basedir}/gensrc" |
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| 45 | * language="java"> |
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| 46 | * <fileset include="**\/*.jr" /> |
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| 47 | * </recordcc> |
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| 48 | * </pre> |
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| 49 | */ |
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| 50 | public class RccTask extends Task { |
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| 51 | |
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| 52 | private String language = "java"; |
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| 53 | private File src; |
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| 54 | private File dest = new File("."); |
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| 55 | private final ArrayList<FileSet> filesets = new ArrayList<FileSet>(); |
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| 56 | private boolean failOnError = true; |
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| 57 | |
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| 58 | /** Creates a new instance of RccTask */ |
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| 59 | public RccTask() { |
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| 60 | } |
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| 61 | |
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| 62 | /** |
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| 63 | * Sets the output language option |
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| 64 | * @param language "java"/"c++" |
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| 65 | */ |
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| 66 | public void setLanguage(String language) { |
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| 67 | this.language = language; |
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| 68 | } |
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| 69 | |
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| 70 | /** |
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| 71 | * Sets the record definition file attribute |
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| 72 | * @param file record definition file |
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| 73 | */ |
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| 74 | public void setFile(File file) { |
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| 75 | this.src = file; |
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| 76 | } |
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| 77 | |
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| 78 | /** |
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| 79 | * Given multiple files (via fileset), set the error handling behavior |
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| 80 | * @param flag true will throw build exception in case of failure (default) |
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| 81 | */ |
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| 82 | public void setFailonerror(boolean flag) { |
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| 83 | this.failOnError = flag; |
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| 84 | } |
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| 85 | |
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| 86 | /** |
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| 87 | * Sets directory where output files will be generated |
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| 88 | * @param dir output directory |
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| 89 | */ |
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| 90 | public void setDestdir(File dir) { |
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| 91 | this.dest = dir; |
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| 92 | } |
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| 93 | |
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| 94 | /** |
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| 95 | * Adds a fileset that can consist of one or more files |
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| 96 | * @param set Set of record definition files |
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| 97 | */ |
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| 98 | public void addFileset(FileSet set) { |
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| 99 | filesets.add(set); |
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| 100 | } |
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| 101 | |
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| 102 | /** |
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| 103 | * Invoke the Hadoop record compiler on each record definition file |
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| 104 | */ |
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| 105 | public void execute() throws BuildException { |
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| 106 | if (src == null && filesets.size()==0) { |
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| 107 | throw new BuildException("There must be a file attribute or a fileset child element"); |
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| 108 | } |
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| 109 | if (src != null) { |
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| 110 | doCompile(src); |
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| 111 | } |
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| 112 | Project myProject = getProject(); |
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| 113 | for (int i = 0; i < filesets.size(); i++) { |
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| 114 | FileSet fs = filesets.get(i); |
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| 115 | DirectoryScanner ds = fs.getDirectoryScanner(myProject); |
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| 116 | File dir = fs.getDir(myProject); |
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| 117 | String[] srcs = ds.getIncludedFiles(); |
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| 118 | for (int j = 0; j < srcs.length; j++) { |
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| 119 | doCompile(new File(dir, srcs[j])); |
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| 120 | } |
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| 121 | } |
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| 122 | } |
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| 123 | |
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| 124 | private void doCompile(File file) throws BuildException { |
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| 125 | String[] args = new String[5]; |
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| 126 | args[0] = "--language"; |
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| 127 | args[1] = this.language; |
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| 128 | args[2] = "--destdir"; |
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| 129 | args[3] = this.dest.getPath(); |
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| 130 | args[4] = file.getPath(); |
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| 131 | int retVal = Rcc.driver(args); |
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| 132 | if (retVal != 0 && failOnError) { |
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| 133 | throw new BuildException("Hadoop record compiler returned error code "+retVal); |
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| 134 | } |
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| 135 | } |
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| 136 | } |
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