Coverage Report - org.boretti.drools.integration.drools5.DroolsHelper
 
Classes in this File Line Coverage Branch Coverage Complexity
DroolsHelper
0 %
0/62
0 %
0/30
8.4
 
 1  
 /*
 2  
     Drools5 Integration Helper
 3  
     Copyright (C) 2009  Mathieu Boretti mathieu.boretti@gmail.com
 4  
 
 5  
     This program is free software: you can redistribute it and/or modify
 6  
     it under the terms of the GNU General Public License as published by
 7  
     the Free Software Foundation, either version 3 of the License, or
 8  
     (at your option) any later version.
 9  
 
 10  
     This program is distributed in the hope that it will be useful,
 11  
     but WITHOUT ANY WARRANTY; without even the implied warranty of
 12  
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13  
     GNU General Public License for more details.
 14  
 
 15  
     You should have received a copy of the GNU General Public License
 16  
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 17  
 
 18  
  */
 19  
 package org.boretti.drools.integration.drools5;
 20  
 
 21  
 import java.io.File;
 22  
 import java.io.FileInputStream;
 23  
 import java.io.FileNotFoundException;
 24  
 import java.io.FileOutputStream;
 25  
 import java.io.IOException;
 26  
 import java.io.InputStreamReader;
 27  
 import java.io.ObjectOutputStream;
 28  
 import java.net.MalformedURLException;
 29  
 import java.net.URL;
 30  
 import java.net.URLClassLoader;
 31  
 import java.util.List;
 32  
 
 33  
 import org.apache.maven.plugin.MojoExecutionException;
 34  
 import org.apache.maven.plugin.logging.Log;
 35  
 import org.apache.maven.project.MavenProject;
 36  
 import org.drools.compiler.DroolsError;
 37  
 import org.drools.compiler.DroolsParserException;
 38  
 import org.drools.compiler.PackageBuilder;
 39  
 import org.drools.compiler.PackageBuilderConfiguration;
 40  
 import org.drools.compiler.PackageBuilderErrors;
 41  
 import org.drools.rule.Package;
 42  
 
 43  
 /**
 44  
  * @author mbo
 45  
  *
 46  
  */
 47  
 class DroolsHelper {
 48  0
         private DroolsHelper() {}
 49  
         
 50  
         public static PackageBuilder getPackageBuilder(Log logger,MavenProject project) 
 51  
         throws MojoExecutionException{
 52  0
                 if (logger.isDebugEnabled()) logger.debug("starting creation of package builder");
 53  0
                 ClassLoader loader = DroolsHelper.class.getClassLoader();
 54  0
                 List<?> classpathFiles = null;
 55  
                 try {
 56  0
                         classpathFiles = project.getRuntimeClasspathElements();
 57  0
                 } catch (Exception e) {
 58  0
                         throw new MojoExecutionException("Error during build "+e.getMessage(), e);
 59  0
                 }
 60  0
                 URL[] urls = new URL[classpathFiles.size()];
 61  
 
 62  0
                  for (int i = 0; i < classpathFiles.size(); ++i) {
 63  
                          try {
 64  0
                                 urls[i] = new File((String)classpathFiles.get(i)).toURI().toURL();
 65  0
                         } catch (MalformedURLException e) {
 66  0
                                 throw new MojoExecutionException("Error during build "+e.getMessage(), e);
 67  0
                         }
 68  
                 }
 69  
                  
 70  0
                 URLClassLoader ucl = new URLClassLoader(urls, loader);
 71  
                 
 72  0
                 PackageBuilderConfiguration conf = new PackageBuilderConfiguration();
 73  0
                 conf.setClassLoader(ucl);
 74  0
                 return new PackageBuilder(conf);
 75  
         }
 76  
         
 77  
         public static boolean compileSourceFile(Log logger,MavenProject project,File src,File dest,boolean xml) 
 78  
         throws MojoExecutionException{
 79  0
                 if (logger.isDebugEnabled()) logger.debug("starting compilation of source file "+src);
 80  0
                 PackageBuilder builder = getPackageBuilder(logger,project);
 81  
                 try {
 82  0
                         InputStreamReader instream = new InputStreamReader( new FileInputStream(src));
 83  0
                         if (xml) builder.addPackageFromXml(instream);
 84  0
                         else builder.addPackageFromDrl(instream);
 85  0
                         if(!validationError(logger,builder.getErrors(),src)) return false;
 86  0
                         dest.getParentFile().mkdirs();
 87  0
                         Package dpackage = builder.getPackage();
 88  0
                         ObjectOutputStream outstream = new ObjectOutputStream(new FileOutputStream(dest));
 89  0
                         outstream.writeObject(dpackage);
 90  0
                         if (outstream != null)
 91  0
                                 outstream.close();
 92  0
                         return true;
 93  0
                 } catch (FileNotFoundException e) {
 94  0
                         throw new MojoExecutionException("Error because of file not found "+e.getMessage(),e);
 95  0
                 } catch (DroolsParserException e) {
 96  0
                         if (!validationError(logger,builder.getErrors(),src)) return false;
 97  0
                         throw new MojoExecutionException("Error because of unexpected drools error "+e.getMessage(),e);                        
 98  0
                 } catch (IOException e) {
 99  0
                         throw new MojoExecutionException("Error because of IO Error "+e.getMessage(),e);
 100  
                 }
 101  
         }
 102  
         
 103  
         public static boolean validateSourceFile(Log logger,MavenProject project,File src,boolean xml) 
 104  
         throws MojoExecutionException{
 105  0
                 if (logger.isDebugEnabled()) logger.debug("starting validation of source file "+src);
 106  0
                 PackageBuilder builder = getPackageBuilder(logger,project);
 107  
                 try {
 108  0
                         InputStreamReader instream = new InputStreamReader( new FileInputStream(src));
 109  0
                         if (xml) builder.addPackageFromXml(instream);
 110  0
                         else builder.addPackageFromDrl(instream);
 111  0
                         return validationError(logger,builder.getErrors(),src);
 112  0
                 } catch (FileNotFoundException e) {
 113  0
                         throw new MojoExecutionException("Error because of file not found "+e.getMessage(),e);
 114  0
                 } catch (DroolsParserException e) {
 115  0
                         if (!validationError(logger,builder.getErrors(),src)) return false;
 116  0
                         throw new MojoExecutionException("Error because of unexpected drools error "+e.getMessage(),e);                        
 117  0
                 } catch (IOException e) {
 118  0
                         throw new MojoExecutionException("Error because of IO Error "+e.getMessage(),e);
 119  
                 }
 120  
         }
 121  
         
 122  
         private static boolean validationError(Log logger,PackageBuilderErrors errors,File src) {
 123  0
                 if (errors!=null) {
 124  0
                         DroolsError err[] = errors.getErrors();
 125  0
                         if (err.length>0) {
 126  0
                                 for(DroolsError e:err) {
 127  0
                                         StringBuilder sp = new StringBuilder();
 128  0
                                         sp.append(""+src.getAbsolutePath()).append(":");
 129  0
                                         if (e.getErrorLines()!=null) for(int l:e.getErrorLines()) sp.append(l).append(":");
 130  0
                                         sp.append(e.getMessage());
 131  0
                                         logger.error("Drools Error : "+sp);
 132  
                                 }
 133  0
                                 return false;
 134  
                         }
 135  
                 }
 136  0
                 return true;
 137  
         }
 138  
         
 139  
 }