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From ma...@apache.org
Subject svn commit: r1357577 - in /ace/sandbox/marrs/ace-client-repository-helper-bundle: ./ .settings/ src/ src/main/ src/main/java/ src/main/java/org/ src/main/java/org/apache/ src/main/java/org/apache/ace/ src/main/java/org/apache/ace/client/ src/main/java/...
Date Thu, 05 Jul 2012 12:27:08 GMT
Author: marrs
Date: Thu Jul  5 12:27:07 2012
New Revision: 1357577

URL: http://svn.apache.org/viewvc?rev=1357577&view=rev
Log:
One last project seemed to be missing.

Added:
    ace/sandbox/marrs/ace-client-repository-helper-bundle/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/.classpath
    ace/sandbox/marrs/ace-client-repository-helper-bundle/.project
    ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.core.resources.prefs
    ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.jdt.core.prefs
    ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.m2e.core.prefs
    ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.pde.core.prefs
    ace/sandbox/marrs/ace-client-repository-helper-bundle/pom.xml
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/Activator.java
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/BundleHelperImpl.java
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/test/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/test/java/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/test/java/org/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/test/java/org/apache/
    ace/sandbox/marrs/ace-client-repository-helper-bundle/src/test/java/org/apache/ace/

Added: ace/sandbox/marrs/ace-client-repository-helper-bundle/.classpath
URL: http://svn.apache.org/viewvc/ace/sandbox/marrs/ace-client-repository-helper-bundle/.classpath?rev=1357577&view=auto
==============================================================================
--- ace/sandbox/marrs/ace-client-repository-helper-bundle/.classpath (added)
+++ ace/sandbox/marrs/ace-client-repository-helper-bundle/.classpath Thu Jul  5 12:27:07 2012
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java"/>
+	<classpathentry kind="src" output="target/test-classes" path="src/test/java"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER"/>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

Added: ace/sandbox/marrs/ace-client-repository-helper-bundle/.project
URL: http://svn.apache.org/viewvc/ace/sandbox/marrs/ace-client-repository-helper-bundle/.project?rev=1357577&view=auto
==============================================================================
--- ace/sandbox/marrs/ace-client-repository-helper-bundle/.project (added)
+++ ace/sandbox/marrs/ace-client-repository-helper-bundle/.project Thu Jul  5 12:27:07 2012
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>ace-client-repository-helper-bundle</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.pde.PluginNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+	</natures>
+</projectDescription>

Added: ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.core.resources.prefs
URL: http://svn.apache.org/viewvc/ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.core.resources.prefs?rev=1357577&view=auto
==============================================================================
--- ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.core.resources.prefs
(added)
+++ ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.core.resources.prefs
Thu Jul  5 12:27:07 2012
@@ -0,0 +1,5 @@
+#Mon Feb 27 09:47:16 CET 2012
+eclipse.preferences.version=1
+encoding//src/main/java=UTF-8
+encoding//src/test/java=UTF-8
+encoding/<project>=UTF-8

Added: ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.jdt.core.prefs
URL: http://svn.apache.org/viewvc/ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.jdt.core.prefs?rev=1357577&view=auto
==============================================================================
--- ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.jdt.core.prefs
(added)
+++ ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.jdt.core.prefs
Thu Jul  5 12:27:07 2012
@@ -0,0 +1,6 @@
+#Mon Feb 27 09:47:16 CET 2012
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
+org.eclipse.jdt.core.compiler.compliance=1.5
+org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.source=1.5

Added: ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.m2e.core.prefs
URL: http://svn.apache.org/viewvc/ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.m2e.core.prefs?rev=1357577&view=auto
==============================================================================
--- ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.m2e.core.prefs
(added)
+++ ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.m2e.core.prefs
Thu Jul  5 12:27:07 2012
@@ -0,0 +1,5 @@
+#Mon Feb 27 09:46:19 CET 2012
+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1

Added: ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.pde.core.prefs
URL: http://svn.apache.org/viewvc/ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.pde.core.prefs?rev=1357577&view=auto
==============================================================================
--- ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.pde.core.prefs
(added)
+++ ace/sandbox/marrs/ace-client-repository-helper-bundle/.settings/org.eclipse.pde.core.prefs
Thu Jul  5 12:27:07 2012
@@ -0,0 +1,3 @@
+#Mon Feb 27 09:47:17 CET 2012
+BUNDLE_ROOT_PATH=target/classes
+eclipse.preferences.version=1

Added: ace/sandbox/marrs/ace-client-repository-helper-bundle/pom.xml
URL: http://svn.apache.org/viewvc/ace/sandbox/marrs/ace-client-repository-helper-bundle/pom.xml?rev=1357577&view=auto
==============================================================================
--- ace/sandbox/marrs/ace-client-repository-helper-bundle/pom.xml (added)
+++ ace/sandbox/marrs/ace-client-repository-helper-bundle/pom.xml Thu Jul  5 12:27:07 2012
@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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">
+
+    <!--
+
+        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.
+    -->
+
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.apache.ace</groupId>
+        <artifactId>ace-pom</artifactId>
+        <version>0.8.1-SNAPSHOT</version>
+        <relativePath>../pom/pom.xml</relativePath>
+    </parent>
+
+    <version>0.8.1-SNAPSHOT</version>
+    <artifactId>org.apache.ace.client.repository.helper.bundle</artifactId>
+    <packaging>bundle</packaging>
+
+    <name>Apache ACE :: Client :: Repository :: Helper :: Bundle</name>
+    <description>Artifact recognizer and helper for bundles.</description>
+
+    <scm>
+        <connection>scm:svn:http://svn.apache.org/repos/asf/ace/trunk/ace-client-repository-helper-bundle</connection>
+        <developerConnection>scm:svn:https://svn.apache.org/repos/asf/ace/trunk/ace-client-repository-helper-bundle</developerConnection>
+        <url>http://svn.apache.org/repos/asf/ace/trunk/ace-client-repository-helper-bundle</url>
+    </scm>
+
+    <properties>
+        <import.package>
+            org.apache.ace.client.repository;version=${project.version},
+            org.apache.ace.client.repository.helper;version=${project.version},
+            org.apache.ace.client.repository.object;version=${project.version},
+            *
+        </import.package>
+        <private.package>
+            org.apache.ace.client.repository.helper.bundle.impl,
+            org.apache.ace.util
+        </private.package>
+        <bundle.activator>org.apache.ace.client.repository.helper.bundle.impl.Activator</bundle.activator>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.ace</groupId>
+            <artifactId>org.apache.ace.client.repository.api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.osgi</groupId>
+            <artifactId>org.osgi.core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.osgi</groupId>
+            <artifactId>org.osgi.compendium</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.felix</groupId>
+            <artifactId>org.apache.felix.dependencymanager</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>

Added: ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/Activator.java
URL: http://svn.apache.org/viewvc/ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/Activator.java?rev=1357577&view=auto
==============================================================================
--- ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/Activator.java
(added)
+++ ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/Activator.java
Thu Jul  5 12:27:07 2012
@@ -0,0 +1,57 @@
+/*
+ * 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.
+ */
+package org.apache.ace.client.repository.helper.bundle.impl;
+
+import java.util.Dictionary;
+import java.util.Hashtable;
+
+import org.apache.ace.client.repository.helper.ArtifactHelper;
+import org.apache.ace.client.repository.helper.ArtifactRecognizer;
+import org.apache.ace.client.repository.helper.bundle.BundleHelper;
+import org.apache.ace.client.repository.object.ArtifactObject;
+import org.apache.felix.dm.DependencyActivatorBase;
+import org.apache.felix.dm.DependencyManager;
+import org.osgi.framework.BundleContext;
+
+/**
+ * Activator class for the Bundle ArtifactHelper.
+ */
+public class Activator extends DependencyActivatorBase {
+
+    @Override
+    public synchronized void init(BundleContext context, DependencyManager manager) throws
Exception {
+        Dictionary<String, String> props = new Hashtable<String, String>();
+        props.put(ArtifactObject.KEY_MIMETYPE, BundleHelper.MIMETYPE);
+        BundleHelperImpl helperImpl = new BundleHelperImpl();
+        manager.add(createComponent()
+            .setInterface(ArtifactHelper.class.getName(), props)
+            .setImplementation(helperImpl));
+        manager.add(createComponent()
+            .setInterface(ArtifactRecognizer.class.getName(), null)
+            .setImplementation(helperImpl));
+        manager.add(createComponent()
+            .setInterface(BundleHelper.class.getName(), null)
+            .setImplementation(helperImpl));
+    }
+
+    @Override
+    public synchronized void destroy(BundleContext context, DependencyManager manager) throws
Exception {
+        // Nothing to do
+    }
+}
\ No newline at end of file

Added: ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/BundleHelperImpl.java
URL: http://svn.apache.org/viewvc/ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/BundleHelperImpl.java?rev=1357577&view=auto
==============================================================================
--- ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/BundleHelperImpl.java
(added)
+++ ace/sandbox/marrs/ace-client-repository-helper-bundle/src/main/java/org/apache/ace/client/repository/helper/bundle/impl/BundleHelperImpl.java
Thu Jul  5 12:27:07 2012
@@ -0,0 +1,282 @@
+/*
+ * 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.
+ */
+package org.apache.ace.client.repository.helper.bundle.impl;
+
+import java.io.IOException;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.jar.Attributes;
+import java.util.jar.JarInputStream;
+import java.util.jar.Manifest;
+
+import org.apache.ace.client.repository.RepositoryUtil;
+import org.apache.ace.client.repository.helper.ArtifactHelper;
+import org.apache.ace.client.repository.helper.ArtifactPreprocessor;
+import org.apache.ace.client.repository.helper.ArtifactRecognizer;
+import org.apache.ace.client.repository.helper.ArtifactResource;
+import org.apache.ace.client.repository.helper.bundle.BundleHelper;
+import org.apache.ace.client.repository.object.ArtifactObject;
+import org.apache.ace.util.VersionRange;
+import org.osgi.framework.Version;
+
+/**
+ * BundleHelperImpl provides the Artifact Repository with Helper and Recognizer services.
+ */
+public class BundleHelperImpl implements ArtifactRecognizer, BundleHelper {
+    /** A custom <code>Comparator</code>, used to sort bundles in increasing
version */
+    private static final Comparator <ArtifactObject> BUNDLE_COMPARATOR = new Comparator<ArtifactObject>()
{
+        public int compare(ArtifactObject left, ArtifactObject right) {
+            Version vLeft = new Version(left.getAttribute(BundleHelper.KEY_VERSION));
+            Version vRight = new Version(right.getAttribute(BundleHelper.KEY_VERSION));
+            return vRight.compareTo(vLeft);
+        }
+    };
+
+    /*
+     * From ArtifactHelper
+     */
+    public boolean canUse(ArtifactObject object) {
+        if (object == null) {
+            return false;
+        }
+        return (object.getMimetype().equals(MIMETYPE));
+    }
+
+    public <TYPE extends ArtifactObject> String getAssociationFilter(TYPE obj, Map<String,
String> properties) {
+        /*
+         * Creates an endpoint filter for an association. If there is a KEY_ASSOCIATION_VERSIONSTATEMENT,
a filter
+         * will be created that matches exactly the given range.
+         */
+        if ((properties != null) && properties.containsKey(KEY_ASSOCIATION_VERSIONSTATEMENT))
{
+            String versions = properties.get(KEY_ASSOCIATION_VERSIONSTATEMENT);
+            VersionRange versionRange = null;
+            try {
+                versionRange = VersionRange.parse(versions);
+            }
+            catch (IllegalArgumentException iae) {
+                throw new IllegalArgumentException("version " + ((versions != null) ? versions
+ " " : "(null) ") + "cannot be parsed into a valid version range statement.");
+            }
+
+            StringBuilder bundleStatement = new StringBuilder("(&(" + KEY_SYMBOLICNAME
+ "=" + RepositoryUtil.escapeFilterValue(obj.getAttribute(KEY_SYMBOLICNAME)) + ")");
+
+            bundleStatement.append("(" + KEY_VERSION + ">=" + versionRange.getLow() +
")");
+            if (!versionRange.isLowInclusive()) {
+                bundleStatement.append("(!(" + KEY_VERSION + "=" + versionRange.getLow()
+ "))");
+            }
+
+            if (versionRange.getHigh() != null) {
+                bundleStatement.append("(" + KEY_VERSION + "<=" + versionRange.getHigh()
+ ")");
+                if (!versionRange.isHighInclusive()) {
+                    bundleStatement.append("(!(" + KEY_VERSION + "=" + versionRange.getHigh()
+ "))");
+                }
+            }
+
+            bundleStatement.append(")");
+
+            return bundleStatement.toString();
+        }
+        else
+        {
+            if (obj.getAttribute(KEY_VERSION) != null) {
+                return "(&(" + KEY_SYMBOLICNAME + "=" + RepositoryUtil.escapeFilterValue(obj.getAttribute(KEY_SYMBOLICNAME))
+ ")(" + KEY_VERSION + "=" + RepositoryUtil.escapeFilterValue(obj.getAttribute(KEY_VERSION))
+ "))";
+            }
+            else {
+                return "(&(" + KEY_SYMBOLICNAME + "=" + RepositoryUtil.escapeFilterValue(obj.getAttribute(KEY_SYMBOLICNAME))
+ ")(!(" + KEY_VERSION + "=*)))";
+            }
+        }
+    }
+
+    public <TYPE extends ArtifactObject> int getCardinality(TYPE obj, Map<String,
String> properties) {
+        /* Normally, all objects that match the filter given by the previous version should
be part of the
+         * association. However, when a version statement has been given, only one should
be used. */
+        if ((properties != null) && properties.containsKey(BundleHelper.KEY_ASSOCIATION_VERSIONSTATEMENT))
{
+            return 1;
+        }
+        else {
+            return Integer.MAX_VALUE;
+        }
+    }
+
+    public Comparator<ArtifactObject> getComparator() {
+        return BUNDLE_COMPARATOR;
+    }
+
+    public Map<String, String> checkAttributes(Map<String, String> attributes)
{
+        return normalizeVersion(attributes);
+    }
+
+    /**
+     * For the filter to work correctly, we need to make sure the version statement is an
+     * OSGi version.
+     */
+    private static Map<String, String> normalizeVersion(Map<String, String> input)
{
+        String version = input.get(KEY_VERSION);
+        if (version != null) {
+            try {
+                Version theVersion = new Version(version);
+                input.put(KEY_VERSION, theVersion.toString());
+            }
+            catch (IllegalArgumentException iae) {
+                throw new IllegalArgumentException("The version statement in the bundle cannot
be parsed to a valid version.", iae);
+            }
+        }
+
+        return input;
+    }
+
+    /*
+     * From BundleHelper
+     */
+    public String[] getDefiningKeys() {
+        return new String[] {KEY_SYMBOLICNAME, KEY_VERSION};
+    }
+
+    public String[] getMandatoryAttributes() {
+        return new String[] {KEY_SYMBOLICNAME};
+    }
+
+    public String getResourceProcessorPIDs(ArtifactObject object) {
+        ensureBundle(object);
+        return object.getAttribute(KEY_RESOURCE_PROCESSOR_PID);
+    }
+
+    public String getSymbolicName(ArtifactObject object) {
+        ensureBundle(object);
+        return object.getAttribute(KEY_SYMBOLICNAME);
+    }
+
+    public String getName(ArtifactObject object) {
+        ensureBundle(object);
+        return object.getAttribute(KEY_NAME);
+    }
+
+    public String getVersion(ArtifactObject object) {
+        ensureBundle(object);
+        return object.getAttribute(KEY_VERSION);
+    }
+
+    public String getVendor(ArtifactObject object) {
+        ensureBundle(object);
+        return object.getAttribute(KEY_VENDOR);
+    }
+
+    public boolean isResourceProcessor(ArtifactObject object) {
+        ensureBundle(object);
+        return object.getAttribute(KEY_RESOURCE_PROCESSOR_PID) != null;
+    }
+
+    private void ensureBundle(ArtifactObject object) {
+        if ((object == null) || !object.getMimetype().equals(MIMETYPE)) {
+            throw new IllegalArgumentException("This ArtifactObject cannot be handled by
a BundleHelper.");
+        }
+    }
+
+    /*
+     * From ArtifactRecognizer
+     */
+    public boolean canHandle(String mimetype) {
+        return MIMETYPE.equals(mimetype);
+    }
+
+    public Map<String, String> extractMetaData(ArtifactResource artifact) throws IllegalArgumentException
{
+        /*
+         * Opens the URL as a Jar input stream, gets the manifest, and extracts headers from
there.
+         */
+        JarInputStream jis = null;
+        try {
+            jis = new JarInputStream(artifact.openStream());
+
+            Attributes manifestAttributes = jis.getManifest().getMainAttributes();
+            Map<String, String> result = new HashMap<String, String>();
+
+            for (String key : new String[] {KEY_NAME, KEY_SYMBOLICNAME, KEY_VERSION, KEY_VENDOR,
KEY_RESOURCE_PROCESSOR_PID}) {
+                String value = manifestAttributes.getValue(key);
+                if (value != null) {
+                    result.put(key, value);
+                }
+            }
+
+            if (result.get(KEY_VERSION) == null) {
+                result.put(KEY_VERSION, "0.0.0");
+            }
+
+            result.put(ArtifactHelper.KEY_MIMETYPE, MIMETYPE);
+            result.put(ArtifactObject.KEY_PROCESSOR_PID, "");
+            String name = manifestAttributes.getValue(KEY_NAME);
+            String version = manifestAttributes.getValue(KEY_VERSION);
+            if (name == null) {
+                name = manifestAttributes.getValue(KEY_SYMBOLICNAME);
+            }
+            result.put(ArtifactObject.KEY_ARTIFACT_NAME, name + (version == null ? "" : "-"
+ version));
+
+            return result;
+        }
+        catch (Exception e) {
+            throw new IllegalArgumentException("Error extracting metadata from artifact.",
e);
+        }
+        finally {
+            try {
+                jis.close();
+            }
+            catch (IOException e) {
+                // Too bad.
+            }
+        }
+    }
+
+    public String recognize(ArtifactResource artifact) {
+        /*
+         * Tries to find out whether this artifact is a bundle by (a) trying to open it as
a
+         * jar, (b) trying to extract the manifest, and (c) checking whether that manifest
+         * contains a Bundle-SymbolicName header.
+         */
+        JarInputStream jis = null;
+        try {
+            jis = new JarInputStream(artifact.openStream());
+
+            Manifest manifest = jis.getManifest();
+
+            Attributes mainAttributes = manifest.getMainAttributes();
+            if (mainAttributes.getValue(KEY_SYMBOLICNAME) != null) {
+                return MIMETYPE;
+            }
+        }
+        catch (Exception e) {
+            return null;
+        }
+        finally {
+            try {
+                jis.close();
+            }
+            catch (Exception e) {
+                // Too bad.
+            }
+        }
+        return null;
+    }
+
+    public ArtifactPreprocessor getPreprocessor() {
+        return null;
+    }
+    
+    public String getExtension(ArtifactResource artifact) {
+        return ".jar";
+    }
+}
\ No newline at end of file



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