#754: Use Modello for XML reports (also fixes #755)

pom.xml

@@ -313,7 +313,7 @@
         <artifactId>modello-maven-plugin</artifactId>
         <executions>
           <execution>
-            <id>generate-sources</id>
+            <id>generate-rule</id>
             <phase>generate-sources</phase>
             <goals>
               <!-- Generate the xpp3 reader code -->
@@ -323,6 +323,29 @@
               <!-- Generate the Java sources for the model itself -->
               <goal>java</goal>
             </goals>
+            <configuration>
+              <models>
+                <model>src/main/mdo/rule.mdo</model>
+              </models>
+              <version>2.0.0</version>
+            </configuration>
+          </execution>
+          <execution>
+            <id>generate-reporting</id>
+            <phase>generate-sources</phase>
+            <goals>
+              <!-- Generate the writer code -->
+              <goal>xpp3-writer</goal>
+              <!-- Generate the Java sources for the model itself -->
+              <goal>java</goal>
+            </goals>
+            <configuration>
+              <models>
+                <model>src/main/mdo/dependency-updates-report.mdo</model>
+                <model>src/main/mdo/plugin-updates-report.mdo</model>
+              </models>
+              <version>2.0.0</version>
+            </configuration>
           </execution>
           <execution>
             <id>site-doc</id>
@@ -345,6 +368,8 @@
         <configuration>
           <models>
             <model>src/main/mdo/rule.mdo</model>
+            <model>src/main/mdo/dependency-updates-report.mdo</model>
+            <model>src/main/mdo/plugin-updates-report.mdo</model>
           </models>
           <version>2.0.0</version>
         </configuration>
@@ -392,6 +417,8 @@
           <excludePackageNames>
             org.codehaus.mojo.versions.model,
             org.codehaus.mojo.versions.model.io.xpp3
+            org.codehaus.mojo.versions.reporting.model,
+            org.codehaus.mojo.versions.reporting.model.io.xpp3,
           </excludePackageNames>
         </configuration>
       </plugin>

src/it/it-dependency-updates-report-issue-755/invoker.properties

@@ -0,0 +1,2 @@
+invoker.goals = ${project.groupId}:${project.artifactId}:${project.version}:dependency-updates-report
+invoker.mavenOpts = -DdependencyUpdatesReportFormats=xml

src/it/it-dependency-updates-report-issue-755/pom.xml

@@ -0,0 +1,16 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>localhost</groupId>
+  <artifactId>dummy-artifact</artifactId>
+  <version>1.0.0-SNAPSHOT</version>
+
+  <dependencies>
+    <dependency>
+      <groupId>localhost</groupId>
+      <artifactId>dummy-api</artifactId>
+      <version>1.0</version>
+    </dependency>
+  </dependencies>
+
+</project>

src/it/it-dependency-updates-report-issue-755/verify.groovy

@@ -0,0 +1,5 @@
+report = new File( basedir, "target/dependency-updates-report.xml" ).text.replaceAll( '\\s*', '' )
+
+assert report.contains( '<incremental>1.0.1</incremental>' )
+assert report.contains( '<minor>1.1</minor>' )
+assert report.contains( '<major>2.0</major>' )

src/it/it-plugin-updates-report-issue-755/invoker.properties

@@ -0,0 +1,2 @@
+invoker.goals = ${project.groupId}:${project.artifactId}:${project.version}:plugin-updates-report
+invoker.mavenOpts = -DpluginUpdatesReportFormats=xml

src/it/it-plugin-updates-report-issue-755/pom.xml

@@ -0,0 +1,18 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>localhost</groupId>
+  <artifactId>dummy-artifact</artifactId>
+  <version>1.0.0-SNAPSHOT</version>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>localhost</groupId>
+        <artifactId>dummy-maven-plugin</artifactId>
+        <version>1.0</version>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>

src/it/it-plugin-updates-report-issue-755/verify.groovy

@@ -0,0 +1,5 @@
+report = new File( basedir, "target/plugin-updates-report.xml" ).text.replaceAll( '\\s*', '' )
+
+assert report.contains( '<major>3.0.0</major>' )
+assert report.contains( '<minor>2.3</minor>' )
+assert report.contains( '<incremental>2.2.2</incremental>' )

src/main/java/org/codehaus/mojo/versions/DependencyUpdatesReportMojo.java

@@ -21,7 +21,10 @@
 
 import javax.inject.Inject;
 
-import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
@@ -39,10 +42,10 @@
 import org.apache.maven.reporting.MavenReportException;
 import org.apache.maven.repository.RepositorySystem;
 import org.codehaus.mojo.versions.api.ArtifactVersions;
-import org.codehaus.mojo.versions.xml.DependencyUpdatesXmlRenderer;
 import org.codehaus.mojo.versions.reporting.ReportRendererFactory;
 import org.codehaus.mojo.versions.reporting.model.DependencyUpdatesModel;
 import org.codehaus.mojo.versions.utils.DependencyComparator;
+import org.codehaus.mojo.versions.xml.DependencyUpdatesXmlReportRenderer;
 import org.codehaus.plexus.i18n.I18N;
 
 import static java.util.Collections.emptyMap;
@@ -205,27 +208,28 @@ && getProject().getOriginalModel().getDependencyManagement().getDependencies() !
 
             for ( String format : formats )
             {
+                DependencyUpdatesModel model =
+                        new DependencyUpdatesModel( dependencyUpdates, dependencyManagementUpdates );
                 if ( "html".equals( format ) )
                 {
-                    rendererFactory.createReportRenderer( getOutputName(), sink, locale,
-                            new DependencyUpdatesModel( dependencyUpdates, dependencyManagementUpdates ) )
-                            .render();
+                    rendererFactory.createReportRenderer( getOutputName(), sink, locale, model ).render();
                 }
                 else if ( "xml".equals( format ) )
                 {
-                    File outputDir = new File( getProject().getBuild().getDirectory() );
-                    if ( !outputDir.exists() )
+                    Path outputDir = Paths.get( getProject().getBuild().getDirectory() );
+                    if ( !Files.exists( outputDir ) )
                     {
-                        if ( !outputDir.mkdirs() )
+                        try
                         {
-                            throw new MavenReportException( "Could not create output directory" );
+                            Files.createDirectories( outputDir );
+                        }
+                        catch ( IOException e )
+                        {
+                            throw new MavenReportException( "Could not create the output directory" );
                         }
                     }
-                    String outputFile = outputDir.getAbsolutePath() + File.separator + getOutputName() + ".xml";
-                    DependencyUpdatesXmlRenderer xmlGenerator =
-                        new DependencyUpdatesXmlRenderer( dependencyUpdates, dependencyManagementUpdates,
-                                                          outputFile );
-                    xmlGenerator.render();
+                    Path outputFile = outputDir.resolve( getOutputName() + ".xml" );
+                    new DependencyUpdatesXmlReportRenderer( model, outputFile ).render();
                 }
             }
         }

src/main/java/org/codehaus/mojo/versions/PluginUpdatesReportMojo.java

@@ -21,7 +21,10 @@
 
 import javax.inject.Inject;
 
-import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
@@ -38,10 +41,10 @@
 import org.apache.maven.plugins.annotations.ResolutionScope;
 import org.apache.maven.reporting.MavenReportException;
 import org.apache.maven.repository.RepositorySystem;
-import org.codehaus.mojo.versions.xml.PluginUpdatesXmlRenderer;
 import org.codehaus.mojo.versions.reporting.ReportRendererFactory;
 import org.codehaus.mojo.versions.reporting.model.PluginUpdatesModel;
 import org.codehaus.mojo.versions.utils.PluginComparator;
+import org.codehaus.mojo.versions.xml.PluginUpdatesXmlReportRenderer;
 import org.codehaus.plexus.i18n.I18N;
 
 import static org.codehaus.mojo.versions.utils.MiscUtils.filter;
@@ -166,28 +169,29 @@ protected void doGenerateReport( Locale locale, Sink sink ) throws MavenReportEx
                         plugin -> plugin.getVersions().length > 1 );
             }
 
+            PluginUpdatesModel model = new PluginUpdatesModel( pluginUpdates, pluginManagementUpdates );
             for ( String format : formats )
             {
                 if ( "html".equals( format ) )
                 {
-                    rendererFactory.createReportRenderer( getOutputName(), getSink(), locale,
-                                    new PluginUpdatesModel( pluginUpdates, pluginManagementUpdates ) )
-                            .render();
+                    rendererFactory.createReportRenderer( getOutputName(), getSink(), locale, model ).render();
                 }
                 else if ( "xml".equals( format ) )
                 {
-                    File outputDir = new File( getProject().getBuild().getDirectory() );
-                    if ( !outputDir.exists() )
+                    Path outputDir = Paths.get( getProject().getBuild().getDirectory() );
+                    if ( !Files.exists( outputDir ) )
                     {
-                        if ( !outputDir.mkdirs() )
+                        try
                         {
-                            throw new MavenReportException( "Could not create output directory" );
+                            Files.createDirectories( outputDir );
+                        }
+                        catch ( IOException e )
+                        {
+                            throw new MavenReportException( "Could not create the output directory" );
                         }
                     }
-                    String outputFile = outputDir.getAbsolutePath() + File.separator + getOutputName() + ".xml";
-                    PluginUpdatesXmlRenderer xmlGenerator =
-                            new PluginUpdatesXmlRenderer( pluginUpdates, pluginManagementUpdates, outputFile );
-                    xmlGenerator.render();
+                    Path outputFile = outputDir.resolve( getOutputName() + ".xml" );
+                    new PluginUpdatesXmlReportRenderer( model, outputFile ).render();
                 }
             }
         }

src/main/java/org/codehaus/mojo/versions/reporting/DependencyUpdatesReportRenderer.java

@@ -29,12 +29,6 @@
 import org.codehaus.mojo.versions.reporting.model.DependencyUpdatesModel;
 import org.codehaus.plexus.i18n.I18N;
 
-import static java.util.Optional.of;
-import static org.codehaus.mojo.versions.api.Segment.INCREMENTAL;
-import static org.codehaus.mojo.versions.api.Segment.MAJOR;
-import static org.codehaus.mojo.versions.api.Segment.MINOR;
-import static org.codehaus.mojo.versions.api.Segment.SUBINCREMENTAL;
-
 /**
  * @param <K> type of the model
  * @since 1.0-beta-1
@@ -92,31 +86,7 @@ protected void renderTable( String titleKey, Map<Dependency, ArtifactVersions> c
     @Override
     protected OverviewStats computeOverviewStats()
     {
-        OverviewStats stats = new OverviewStats();
-        model.getAllUpdates().values().forEach( details ->
-        {
-            if ( oldestUpdateCache.get( details, of( SUBINCREMENTAL ) ) != null )
-            {
-                stats.incrementAny();
-            }
-            else if ( oldestUpdateCache.get( details, of( INCREMENTAL ) ) != null )
-            {
-                stats.incrementIncremental();
-            }
-            else if ( oldestUpdateCache.get( details, of( MINOR ) ) != null )
-            {
-                stats.incrementMinor();
-            }
-            else if ( oldestUpdateCache.get( details, of( MAJOR ) ) != null )
-            {
-                stats.incrementMajor();
-            }
-            else
-            {
-                stats.incrementUpToDate();
-            }
-        } );
-        return stats;
+        return OverviewStats.fromUpdates( model.getAllUpdates().values(), oldestUpdateCache );
     }
 
     protected void renderDependencyDetail( Dependency artifact, ArtifactVersions details )

src/main/java/org/codehaus/mojo/versions/reporting/OverviewStats.java

@@ -20,12 +20,26 @@
  * under the License.
  */
 
+import java.util.Collection;
+import java.util.Optional;
+
+import org.apache.maven.artifact.versioning.ArtifactVersion;
+import org.codehaus.mojo.versions.api.ArtifactVersions;
+import org.codehaus.mojo.versions.api.ArtifactVersionsCache;
+import org.codehaus.mojo.versions.api.Segment;
+
+import static java.util.Optional.of;
+import static org.codehaus.mojo.versions.api.Segment.INCREMENTAL;
+import static org.codehaus.mojo.versions.api.Segment.MAJOR;
+import static org.codehaus.mojo.versions.api.Segment.MINOR;
+import static org.codehaus.mojo.versions.api.Segment.SUBINCREMENTAL;
+
 /**
  * Represents summary stats
  *
  * @author Andrzej Jarmoniuk
  */
-class OverviewStats
+public class OverviewStats
 {
     private int major;
 
@@ -37,6 +51,55 @@ class OverviewStats
 
     private int upToDate;
 
+    /**
+     * Creates a {@linkplain OverviewStats} instance based on the collection of version updates in
+     * the argument
+     *
+     * @param updates collection of all version updates, typically from
+     * {@linkplain org.codehaus.mojo.versions.reporting.model.DependencyUpdatesModel#getAllUpdates()}
+     * @param cache if not null, cache to retrieve the version information, initialised with
+     * the {@link ArtifactVersions#getOldestUpdate(Optional)} update information
+     * @param <T> subclass of {@linkplain OverviewStats}
+     * @param <V> subclass of {@linkplain ArtifactVersions}
+     * @return instance of the {@linkplain OverviewStats}
+     */
+    public static <T extends OverviewStats, V extends ArtifactVersions> T fromUpdates( Collection<V> updates,
+                                                                                       ArtifactVersionsCache cache )
+    {
+        OverviewStats stats = new OverviewStats();
+        updates.forEach( details ->
+        {
+            if ( getOldestUpdate( cache, details, of( SUBINCREMENTAL ) ) != null )
+            {
+                stats.incrementAny();
+            }
+            else if ( getOldestUpdate( cache, details, of( INCREMENTAL ) ) != null )
+            {
+                stats.incrementIncremental();
+            }
+            else if ( getOldestUpdate( cache, details, of( MINOR ) ) != null )
+            {
+                stats.incrementMinor();
+            }
+            else if ( getOldestUpdate( cache, details, of( MAJOR ) ) != null )
+            {
+                stats.incrementMajor();
+            }
+            else
+            {
+                stats.incrementUpToDate();
+            }
+        } );
+        return (T) stats;
+    }
+
+    protected static <V extends ArtifactVersions> ArtifactVersion getOldestUpdate( ArtifactVersionsCache cache,
+                                                                                   V details,
+                                                                                 Optional<Segment> segment )
+    {
+        return cache != null ? cache.get( details, segment ) : details.getOldestUpdate( segment );
+    }
+
     public int getMajor()
     {
         return major;