o adding RuntimeInformation component to the compat package.

git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@781203 13f79535-47bb-0310-9956-ffa450edef68

maven-compat/src/main/java/org/apache/maven/execution/ApplicationInformation.java

@@ -0,0 +1,25 @@
+package org.apache.maven.execution;
+
+import org.apache.maven.artifact.versioning.ArtifactVersion;
+
+public class ApplicationInformation
+{
+    private ArtifactVersion version;
+    private String builtOn;
+    
+    public ApplicationInformation( ArtifactVersion version, String builtOn )
+    {
+        this.version = version;
+        this.builtOn = builtOn;
+    }
+
+    public ArtifactVersion getVersion()
+    {
+        return version;
+    }
+
+    public String getBuiltOn()
+    {
+        return builtOn;
+    }        
+}

maven-compat/src/main/java/org/apache/maven/execution/DefaultRuntimeInformation.java

@@ -0,0 +1,109 @@
+package org.apache.maven.execution;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
+import org.apache.maven.artifact.versioning.ArtifactVersion;
+import org.apache.maven.artifact.versioning.DefaultArtifactVersion;
+import org.codehaus.plexus.component.annotations.Component;
+import org.codehaus.plexus.personality.plexus.lifecycle.phase.Initializable;
+import org.codehaus.plexus.personality.plexus.lifecycle.phase.InitializationException;
+import org.codehaus.plexus.util.IOUtil;
+
+/**
+ * Describes runtime information about the application.
+ *
+ * @author Jason van Zyl
+ * @author <a href="mailto:brett@apache.org">Brett Porter</a>
+ * @version $Id$
+ */
+@Component(role = RuntimeInformation.class)
+public class DefaultRuntimeInformation
+    implements RuntimeInformation, Initializable
+{    
+    private ApplicationInformation applicationInformation;
+    
+    public ApplicationInformation getApplicationInformation()
+    {
+        return applicationInformation;
+    }
+
+    /** @deprecated Use getApplicationInformation() */
+    public ArtifactVersion getApplicationVersion()
+    {
+        return applicationInformation.getVersion();
+    }    
+    
+    public void initialize()
+        throws InitializationException
+    {
+        applicationInformation = getVersion( getClass().getClassLoader(), "org.apache.maven", "maven-core" );
+    }
+    
+    public static ApplicationInformation getVersion( ClassLoader loader, String groupId, String artifactId )
+    {
+        String MAVEN_PROPERTIES = "META-INF/maven/" + groupId + "/" + artifactId + "/pom.properties";
+
+        String version = "unknown";
+        String builtOn = "unknown";
+
+        InputStream resourceAsStream = null;
+        try
+        {
+            Properties properties = new Properties();
+            resourceAsStream = loader.getResourceAsStream( MAVEN_PROPERTIES );
+            
+            if ( resourceAsStream == null )
+            {
+                return new ApplicationInformation( new DefaultArtifactVersion( "3.0" ), builtOn );
+            }
+            
+            properties.load( resourceAsStream );
+
+            String property = properties.getProperty( "version" );
+            
+            if ( property != null )
+            {
+                version = property;
+            }
+            
+            property = properties.getProperty( "builtOn" );
+            
+            if ( property != null )
+            {
+                builtOn = property;
+            }
+            
+            return new ApplicationInformation( new DefaultArtifactVersion( version ), builtOn );
+            
+        }
+        catch ( IOException e )
+        {
+            return new ApplicationInformation( new DefaultArtifactVersion( version ), builtOn );
+        }
+        finally
+        {
+            IOUtil.close( resourceAsStream );
+        }        
+    }
+}

maven-compat/src/main/java/org/apache/maven/execution/RuntimeInformation.java

@@ -0,0 +1,38 @@
+package org.apache.maven.execution;
+
+import org.apache.maven.artifact.versioning.ArtifactVersion;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/**
+ * Describes runtime information about the application.
+ *
+ * @author <a href="mailto:brett@apache.org">Brett Porter</a>
+ * @version $Id$
+ */
+public interface RuntimeInformation
+{
+    ApplicationInformation getApplicationInformation();
+    
+    /** @deprecated Use getApplicationInformation() */
+    //!!BC Used by the Eclipse Plugin
+    ArtifactVersion getApplicationVersion();
+     
+}