Attachment 81472 Details for Bug 207802 – Patch for IDownloadStrategy

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[patch] Patch for IDownloadStrategy

downloadStrategy-patch.txt (text/plain), 28.05 KB, created by Timothy Webb

on 2007-10-29 11:46:47 EDT

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Filename:

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Creator: Timothy Webb

Created: 2007-10-29 11:46:47 EDT

Size: 28.05 KB

patch

obsolete

>### Eclipse Workspace Patch 1.0
>#P org.eclipse.equinox.p2.artifact.repository
>Index: src/org/eclipse/equinox/p2/artifact/repository/IArtifactRepositoryWithRangeSupport.java
>===================================================================
>RCS file: src/org/eclipse/equinox/p2/artifact/repository/IArtifactRepositoryWithRangeSupport.java
>diff -N src/org/eclipse/equinox/p2/artifact/repository/IArtifactRepositoryWithRangeSupport.java
>--- /dev/null	1 Jan 1970 00:00:00 -0000
>+++ src/org/eclipse/equinox/p2/artifact/repository/IArtifactRepositoryWithRangeSupport.java	1 Jan 1970 00:00:00 -0000
>@@ -0,0 +1,25 @@
>+/*******************************************************************************
>+ * Copyright (c) 2007 Genuitec, LLC and others.
>+ * All rights reserved. This program and the accompanying materials
>+ * are made available under the terms of the Eclipse Public License v1.0
>+ * which accompanies this distribution, and is available at
>+ * http://www.eclipse.org/legal/epl-v10.html
>+ *
>+ * Contributors:
>+ *     Genuitec, LLC - initial API and implementation
>+ *******************************************************************************/
>+package org.eclipse.equinox.p2.artifact.repository;
>+
>+import java.io.OutputStream;
>+import org.eclipse.core.runtime.IProgressMonitor;
>+import org.eclipse.core.runtime.IStatus;
>+import org.eclipse.ecf.filetransfer.IFileRangeSpecification;
>+
>+public interface IArtifactRepositoryWithRangeSupport extends IArtifactRepository {
>+
>+	/**
>+	 * Return a stream containing the described artifact, or null if not available 
>+	 */
>+	public IStatus getArtifact(IArtifactDescriptor descriptor, IFileRangeSpecification range, OutputStream destination, IProgressMonitor monitor);
>+
>+}
>#P org.eclipse.equinox.p2.download
>Index: .settings/org.eclipse.pde.core.prefs
>===================================================================
>RCS file: /cvsroot/eclipse/equinox-incubator/provisioning/org.eclipse.equinox.p2.download/.settings/org.eclipse.pde.core.prefs,v
>retrieving revision 1.1
>diff -u -r1.1 org.eclipse.pde.core.prefs
>--- .settings/org.eclipse.pde.core.prefs	30 Sep 2007 18:11:00 -0000	1.1
>+++ .settings/org.eclipse.pde.core.prefs	29 Oct 2007 15:36:42 -0000
>@@ -1,4 +1,5 @@
>-
>+#Mon Oct 29 09:10:03 EDT 2007
> eclipse.preferences.version=1
>-pluginProject.extensions=false
>+instance/org.eclipse.core.net/org.eclipse.core.net.hasMigrated=true
>+pluginProject.extensions=true
> resolve.requirebundle=false
>Index: build.properties
>===================================================================
>RCS file: /cvsroot/eclipse/equinox-incubator/provisioning/org.eclipse.equinox.p2.download/build.properties,v
>retrieving revision 1.2
>diff -u -r1.2 build.properties
>--- build.properties	1 Oct 2007 14:46:44 -0000	1.2
>+++ build.properties	29 Oct 2007 15:36:42 -0000
>@@ -12,5 +12,7 @@
> output.. = bin/
> bin.includes = META-INF/,\
>                .,\
>-               about.html
>+               about.html,\
>+               plugin.xml,\
>+               schema/
> src.includes = about.html
>Index: src/org/eclipse/equinox/internal/p2/download/DownloadActivator.java
>===================================================================
>RCS file: /cvsroot/eclipse/equinox-incubator/provisioning/org.eclipse.equinox.p2.download/src/org/eclipse/equinox/internal/p2/download/DownloadActivator.java,v
>retrieving revision 1.1
>diff -u -r1.1 DownloadActivator.java
>--- src/org/eclipse/equinox/internal/p2/download/DownloadActivator.java	30 Sep 2007 18:55:17 -0000	1.1
>+++ src/org/eclipse/equinox/internal/p2/download/DownloadActivator.java	29 Oct 2007 15:36:42 -0000
>@@ -10,21 +10,27 @@
>  *******************************************************************************/
> package org.eclipse.equinox.internal.p2.download;
> 
>-import org.osgi.framework.BundleActivator;
>-import org.osgi.framework.BundleContext;
>+import org.eclipse.equinox.internal.p2.download.strategy.DownloadStrategyManager;
>+import org.eclipse.equinox.p2.download.strategy.IDownloadStrategyManager;
>+import org.osgi.framework.*;
> 
> public class DownloadActivator implements BundleActivator {
> 	public static final String ID = "org.eclipse.equinox.p2.download";
> 
> 	public static BundleContext context;
> 
>+	private ServiceRegistration strategyManagerRegistration;
>+
> 	public void start(BundleContext context) throws Exception {
> 		DownloadActivator.context = context;
>-
>+		DownloadStrategyManager strategyManager = new DownloadStrategyManager();
>+		strategyManagerRegistration = context.registerService(IDownloadStrategyManager.class.getName(), strategyManager, null);
> 	}
> 
> 	public void stop(BundleContext context) throws Exception {
> 		DownloadActivator.context = null;
>+		if (strategyManagerRegistration != null)
>+			strategyManagerRegistration.unregister();
>+		strategyManagerRegistration = null;
> 	}
>-
> }
>Index: src/org/eclipse/equinox/p2/download/DownloadManager.java
>===================================================================
>RCS file: /cvsroot/eclipse/equinox-incubator/provisioning/org.eclipse.equinox.p2.download/src/org/eclipse/equinox/p2/download/DownloadManager.java,v
>retrieving revision 1.2
>diff -u -r1.2 DownloadManager.java
>--- src/org/eclipse/equinox/p2/download/DownloadManager.java	24 Oct 2007 02:57:43 -0000	1.2
>+++ src/org/eclipse/equinox/p2/download/DownloadManager.java	29 Oct 2007 15:36:42 -0000
>@@ -10,13 +10,13 @@
>  *******************************************************************************/
> package org.eclipse.equinox.p2.download;
> 
>-import java.util.ArrayList;
>-import java.util.Iterator;
>+import java.util.*;
> import org.eclipse.core.runtime.*;
> import org.eclipse.equinox.internal.p2.download.DownloadActivator;
> import org.eclipse.equinox.p2.artifact.repository.*;
> import org.eclipse.equinox.p2.core.helpers.MultiStatus;
> import org.eclipse.equinox.p2.core.helpers.ServiceHelper;
>+import org.eclipse.equinox.p2.download.strategy.*;
> 
> public class DownloadManager {
> 	ArrayList requestsToProcess = new ArrayList();
>@@ -52,13 +52,23 @@
> 		try {
> 			if (requestsToProcess.isEmpty())
> 				return Status.OK_STATUS;
>+
>+			IDownloadStrategyManager strategyMgr = (IDownloadStrategyManager) ServiceHelper.getService(DownloadActivator.context, IDownloadStrategyManager.class.getName());
>+			IDownloadStrategy[] strategies = strategyMgr.getKnownStrategies();
>+			if (strategies.length == 0)
>+				return new Status(IStatus.ERROR, DownloadActivator.ID, "No strategy available");
>+
> 			IArtifactRepositoryManager repoMgr = (IArtifactRepositoryManager) ServiceHelper.getService(DownloadActivator.context, IArtifactRepositoryManager.class.getName());
> 			IArtifactRepository[] repositories = repoMgr.getKnownRepositories();
> 			if (repositories.length == 0)
> 				return new Status(IStatus.ERROR, DownloadActivator.ID, "No repository available");
>-			for (int i = 0; i < repositories.length && !requestsToProcess.isEmpty() && !monitor.isCanceled(); i++) {
>-				IArtifactRequest[] requests = getRequestsForRepository(repositories[i]);
>-				IStatus dlStatus = repositories[i].getArtifacts(requests, subMonitor.newChild(requests.length));
>+
>+			// determine which strategies will work best for these repositories
>+			StrategyRequests[] strategyRequests = determineStrategies(monitor, strategies, repositories);
>+
>+			// delegate work to the various strategies
>+			for (int i = 0; i < strategyRequests.length && !requestsToProcess.isEmpty() && !monitor.isCanceled(); i++) {
>+				IStatus dlStatus = strategyRequests[i].process(subMonitor);
> 				if (dlStatus.getSeverity() == IStatus.CANCEL)
> 					return overallStatus(monitor);
> 				filterUnfetched();
>@@ -71,6 +81,38 @@
> 		}
> 	}
> 
>+	private StrategyRequests[] determineStrategies(IProgressMonitor monitor, IDownloadStrategy[] strategies, IArtifactRepository[] repositories) {
>+		StrategyRequests[] strategyRequests = new StrategyRequests[strategies.length];
>+		for (int i = 0; i < repositories.length && !monitor.isCanceled(); i++) {
>+			IArtifactRequest[] requests = getRequestsForRepository(repositories[i]);
>+			if (requests.length == 0)
>+				continue;
>+
>+			IDownloadStrategy bestStrategy = null;
>+			int strategyIdx = -1;
>+			for (int j = 0; j < strategies.length; j++) {
>+				if (!strategies[j].supportsRepository(repositories[i]))
>+					break;
>+				if (bestStrategy == null || strategies[j].isBetterThan(bestStrategy, repositories[i])) {
>+					bestStrategy = strategies[j];
>+					strategyIdx = j;
>+				}
>+			}
>+			if (bestStrategy == null)
>+				continue;
>+
>+			if (strategyRequests[strategyIdx] == null)
>+				strategyRequests[strategyIdx] = new StrategyRequests(strategies[strategyIdx]);
>+			strategyRequests[strategyIdx].queueWork(repositories[i], requests);
>+		}
>+
>+		List toUse = new ArrayList(strategyRequests.length);
>+		for (int i = 0; i < strategyRequests.length; i++)
>+			if (strategyRequests[i] != null)
>+				toUse.add(strategyRequests[i]);
>+		return (StrategyRequests[]) toUse.toArray(new StrategyRequests[toUse.size()]);
>+	}
>+
> 	private IArtifactRequest[] getRequestsForRepository(IArtifactRepository repository) {
> 		ArrayList applicable = new ArrayList();
> 		for (Iterator it = requestsToProcess.iterator(); it.hasNext();) {
>@@ -102,4 +144,25 @@
> 		}
> 		return result;
> 	}
>-}
>+
>+	private static final class StrategyRequests {
>+
>+		private final IDownloadStrategy strategy;
>+		private final List strategyRequests = new ArrayList();
>+		private final Set totalRequests = new HashSet();
>+
>+		StrategyRequests(IDownloadStrategy strategy) {
>+			this.strategy = strategy;
>+		}
>+
>+		void queueWork(IArtifactRepository artifactRepository, IArtifactRequest[] requests) {
>+			totalRequests.addAll(Arrays.asList(requests));
>+			strategyRequests.add(new DownloadStrategyRequests(artifactRepository, requests));
>+		}
>+
>+		IStatus process(SubMonitor subMonitor) {
>+			DownloadStrategyRequests requests[] = (DownloadStrategyRequests[]) strategyRequests.toArray(new DownloadStrategyRequests[strategyRequests.size()]);
>+			return strategy.getArtifacts(requests, subMonitor.newChild(totalRequests.size()));
>+		}
>+	}
>+}
>\ No newline at end of file
>Index: META-INF/MANIFEST.MF
>===================================================================
>RCS file: /cvsroot/eclipse/equinox-incubator/provisioning/org.eclipse.equinox.p2.download/META-INF/MANIFEST.MF,v
>retrieving revision 1.4
>diff -u -r1.4 MANIFEST.MF
>--- META-INF/MANIFEST.MF	25 Oct 2007 20:57:49 -0000	1.4
>+++ META-INF/MANIFEST.MF	29 Oct 2007 15:36:42 -0000
>@@ -1,14 +1,16 @@
> Manifest-Version: 1.0
> Bundle-ManifestVersion: 2
>-Bundle-SymbolicName: org.eclipse.equinox.p2.download
>+Bundle-SymbolicName: org.eclipse.equinox.p2.download;singleton:=true
> Bundle-Name: %pluginName
> Bundle-Vendor: %providerName
> Bundle-Localization: plugin
> Bundle-Version: 0.1.0.qualifier
> Export-Package: org.eclipse.equinox.internal.p2.download;x-internal:=true,
>- org.eclipse.equinox.p2.download
>+ org.eclipse.equinox.p2.download,
>+ org.eclipse.equinox.p2.download.strategy
> Require-Bundle: org.eclipse.equinox.common
>-Import-Package: org.eclipse.equinox.internal.p2.core,
>+Import-Package: org.eclipse.core.runtime,
>+ org.eclipse.equinox.internal.p2.core,
>  org.eclipse.equinox.p2.artifact.repository,
>  org.eclipse.equinox.p2.core.eventbus,
>  org.eclipse.equinox.p2.core.helpers,
>Index: src/org/eclipse/equinox/p2/download/strategy/IDownloadStrategy.java
>===================================================================
>RCS file: src/org/eclipse/equinox/p2/download/strategy/IDownloadStrategy.java
>diff -N src/org/eclipse/equinox/p2/download/strategy/IDownloadStrategy.java
>--- /dev/null	1 Jan 1970 00:00:00 -0000
>+++ src/org/eclipse/equinox/p2/download/strategy/IDownloadStrategy.java	1 Jan 1970 00:00:00 -0000
>@@ -0,0 +1,28 @@
>+/*******************************************************************************
>+ * Copyright (c) 2007 Genuitec, LLC and others.
>+ * All rights reserved. This program and the accompanying materials
>+ * are made available under the terms of the Eclipse Public License v1.0
>+ * which accompanies this distribution, and is available at
>+ * http://www.eclipse.org/legal/epl-v10.html
>+ *
>+ * Contributors:
>+ *     Genuitec, LLC - initial API and implementation
>+ *******************************************************************************/
>+package org.eclipse.equinox.p2.download.strategy;
>+
>+import org.eclipse.core.runtime.IProgressMonitor;
>+import org.eclipse.core.runtime.IStatus;
>+import org.eclipse.equinox.p2.artifact.repository.IArtifactRepository;
>+
>+/**
>+ * Provides a strategy that understands how to perform downloading from one or more
>+ * repositories.
>+ */
>+public interface IDownloadStrategy {
>+
>+	boolean supportsRepository(IArtifactRepository artifactRepository);
>+
>+	boolean isBetterThan(IDownloadStrategy other, IArtifactRepository artifactRepository);
>+
>+	IStatus getArtifacts(DownloadStrategyRequests[] requests, IProgressMonitor monitor);
>+}
>Index: src/org/eclipse/equinox/p2/download/strategy/DownloadStrategyRequests.java
>===================================================================
>RCS file: src/org/eclipse/equinox/p2/download/strategy/DownloadStrategyRequests.java
>diff -N src/org/eclipse/equinox/p2/download/strategy/DownloadStrategyRequests.java
>--- /dev/null	1 Jan 1970 00:00:00 -0000
>+++ src/org/eclipse/equinox/p2/download/strategy/DownloadStrategyRequests.java	1 Jan 1970 00:00:00 -0000
>@@ -0,0 +1,33 @@
>+/*******************************************************************************
>+ * Copyright (c) 2007 Genuitec, LLC and others.
>+ * All rights reserved. This program and the accompanying materials
>+ * are made available under the terms of the Eclipse Public License v1.0
>+ * which accompanies this distribution, and is available at
>+ * http://www.eclipse.org/legal/epl-v10.html
>+ *
>+ * Contributors:
>+ *     Genuitec, LLC - initial API and implementation
>+ *******************************************************************************/
>+package org.eclipse.equinox.p2.download.strategy;
>+
>+import org.eclipse.equinox.p2.artifact.repository.IArtifactRepository;
>+import org.eclipse.equinox.p2.artifact.repository.IArtifactRequest;
>+
>+public class DownloadStrategyRequests {
>+
>+	private final IArtifactRepository artifactRepository;
>+	private final IArtifactRequest[] requests;
>+
>+	public DownloadStrategyRequests(IArtifactRepository artifactRepository, IArtifactRequest[] requests) {
>+		this.artifactRepository = artifactRepository;
>+		this.requests = requests;
>+	}
>+
>+	public IArtifactRepository getRepository() {
>+		return artifactRepository;
>+	}
>+
>+	public IArtifactRequest[] getRequests() {
>+		return requests;
>+	}
>+}
>Index: plugin.xml
>===================================================================
>RCS file: plugin.xml
>diff -N plugin.xml
>--- /dev/null	1 Jan 1970 00:00:00 -0000
>+++ plugin.xml	1 Jan 1970 00:00:00 -0000
>@@ -0,0 +1,12 @@
>+<?xml version="1.0" encoding="UTF-8"?>
>+<?eclipse version="3.2"?>
>+<plugin>
>+   <extension-point id="downloadStrategies" name="Download Strategies" schema="schema/downloadStrategies.exsd"/>
>+   <extension
>+         point="org.eclipse.equinox.p2.download.downloadStrategies">
>+      <strategy
>+            class="org.eclipse.equinox.internal.p2.download.strategy.SimpleDownloadStrategy">
>+      </strategy>
>+   </extension>
>+
>+</plugin>
>Index: src/org/eclipse/equinox/internal/p2/download/strategy/SimpleDownloadStrategy.java
>===================================================================
>RCS file: src/org/eclipse/equinox/internal/p2/download/strategy/SimpleDownloadStrategy.java
>diff -N src/org/eclipse/equinox/internal/p2/download/strategy/SimpleDownloadStrategy.java
>--- /dev/null	1 Jan 1970 00:00:00 -0000
>+++ src/org/eclipse/equinox/internal/p2/download/strategy/SimpleDownloadStrategy.java	1 Jan 1970 00:00:00 -0000
>@@ -0,0 +1,77 @@
>+/*******************************************************************************
>+ * Copyright (c) 2007 Genuitec, LLC and others.
>+ * All rights reserved. This program and the accompanying materials
>+ * are made available under the terms of the Eclipse Public License v1.0
>+ * which accompanies this distribution, and is available at
>+ * http://www.eclipse.org/legal/epl-v10.html
>+ *
>+ * Contributors:
>+ *     Genuitec, LLC - initial API and implementation
>+ *******************************************************************************/
>+package org.eclipse.equinox.internal.p2.download.strategy;
>+
>+import java.util.*;
>+import org.eclipse.equinox.p2.core.helpers.MultiStatus;
>+import org.eclipse.core.runtime.*;
>+import org.eclipse.equinox.p2.artifact.repository.IArtifactRepository;
>+import org.eclipse.equinox.p2.artifact.repository.IArtifactRequest;
>+import org.eclipse.equinox.p2.download.strategy.DownloadStrategyRequests;
>+import org.eclipse.equinox.p2.download.strategy.IDownloadStrategy;
>+
>+/**
>+ * The simplest download strategy that can work with all repository formats
>+ * and is better than no other repository -- single threaded, sequential through
>+ * the various artifacts until all requests are processed. 
>+ */
>+public class SimpleDownloadStrategy implements IDownloadStrategy {
>+
>+	public IStatus getArtifacts(DownloadStrategyRequests[] requests, IProgressMonitor monitor) {
>+
>+		Set requestsToProcess = new HashSet();
>+		for (int i = 0; i < requests.length; i++)
>+			requestsToProcess.addAll(Arrays.asList(requests[i].getRequests()));
>+		SubMonitor subMonitor = SubMonitor.convert(monitor, "Downloading artifacts", requestsToProcess.size());
>+
>+		for (int i = 0; i < requests.length && !requestsToProcess.isEmpty() && !monitor.isCanceled(); i++) {
>+			IStatus dlStatus = requests[i].getRepository().getArtifacts(requests[i].getRequests(), subMonitor.newChild(requests[i].getRequests().length));
>+			if (dlStatus.getSeverity() == IStatus.CANCEL)
>+				return overallStatus(requestsToProcess, monitor);
>+			filterUnfetched(requestsToProcess);
>+			subMonitor.setWorkRemaining(requestsToProcess.size());
>+		}
>+
>+		return overallStatus(requestsToProcess, monitor);
>+	}
>+
>+	public boolean isBetterThan(IDownloadStrategy other, IArtifactRepository artifactRepository) {
>+		return false;
>+	}
>+
>+	public boolean supportsRepository(IArtifactRepository artifactRepository) {
>+		return true;
>+	}
>+
>+	private void filterUnfetched(Set requestsToProcess) {
>+		for (Iterator iterator = requestsToProcess.iterator(); iterator.hasNext();) {
>+			IArtifactRequest request = (IArtifactRequest) iterator.next();
>+			if (request.getResult() != null && request.getResult().isOK()) {
>+				iterator.remove();
>+			}
>+		}
>+	}
>+
>+	private IStatus overallStatus(Set requestsToProcess, IProgressMonitor monitor) {
>+		if (monitor.isCanceled())
>+			return Status.CANCEL_STATUS;
>+
>+		if (requestsToProcess.size() == 0)
>+			return Status.OK_STATUS;
>+
>+		MultiStatus result = new MultiStatus();
>+		for (Iterator iterator = requestsToProcess.iterator(); iterator.hasNext();) {
>+			IArtifactRequest failed = (IArtifactRequest) iterator.next();
>+			result.add(failed.getResult());
>+		}
>+		return result;
>+	}
>+}
>Index: schema/downloadStrategies.exsd
>===================================================================
>RCS file: schema/downloadStrategies.exsd
>diff -N schema/downloadStrategies.exsd
>--- /dev/null	1 Jan 1970 00:00:00 -0000
>+++ schema/downloadStrategies.exsd	1 Jan 1970 00:00:00 -0000
>@@ -0,0 +1,105 @@
>+<?xml version='1.0' encoding='UTF-8'?>
>+
>+<schema targetNamespace="org.eclipse.equinox.p2.download">
>+<annotation>
>+      <appInfo>
>+         <meta.schema plugin="org.eclipse.equinox.p2.download" id="downloadStrategies" name="Download Strategies"/>
>+      </appInfo>
>+      <documentation>
>+         Definition of strategies that understand how to efficiently download software from a set of artifact repositories.
>+      </documentation>
>+   </annotation>
>+
>+   <element name="extension">
>+      <complexType>
>+         <sequence minOccurs="1" maxOccurs="unbounded">
>+            <element ref="strategy"/>
>+         </sequence>
>+         <attribute name="point" type="string" use="required">
>+            <annotation>
>+               <documentation>
>+                  
>+               </documentation>
>+            </annotation>
>+         </attribute>
>+         <attribute name="id" type="string">
>+            <annotation>
>+               <documentation>
>+                  
>+               </documentation>
>+            </annotation>
>+         </attribute>
>+         <attribute name="name" type="string">
>+            <annotation>
>+               <documentation>
>+                  
>+               </documentation>
>+               <appInfo>
>+                  <meta.attribute translatable="true"/>
>+               </appInfo>
>+            </annotation>
>+         </attribute>
>+      </complexType>
>+   </element>
>+
>+   <element name="strategy">
>+      <complexType>
>+         <attribute name="class" type="string" use="required">
>+            <annotation>
>+               <documentation>
>+                  
>+               </documentation>
>+               <appInfo>
>+                  <meta.attribute kind="java" basedOn=":org.eclipse.equinox.p2.download.strategy.IDownloadStrategy"/>
>+               </appInfo>
>+            </annotation>
>+         </attribute>
>+      </complexType>
>+   </element>
>+
>+   <annotation>
>+      <appInfo>
>+         <meta.section type="since"/>
>+      </appInfo>
>+      <documentation>
>+         [Enter the first release in which this extension point appears.]
>+      </documentation>
>+   </annotation>
>+
>+   <annotation>
>+      <appInfo>
>+         <meta.section type="examples"/>
>+      </appInfo>
>+      <documentation>
>+         [Enter extension point usage example here.]
>+      </documentation>
>+   </annotation>
>+
>+   <annotation>
>+      <appInfo>
>+         <meta.section type="apiInfo"/>
>+      </appInfo>
>+      <documentation>
>+         [Enter API information here.]
>+      </documentation>
>+   </annotation>
>+
>+   <annotation>
>+      <appInfo>
>+         <meta.section type="implementation"/>
>+      </appInfo>
>+      <documentation>
>+         [Enter information about supplied implementation of this extension point.]
>+      </documentation>
>+   </annotation>
>+
>+   <annotation>
>+      <appInfo>
>+         <meta.section type="copyright"/>
>+      </appInfo>
>+      <documentation>
>+         
>+      </documentation>
>+   </annotation>
>+
>+</schema>
>Index: src/org/eclipse/equinox/p2/download/strategy/IDownloadStrategyManager.java
>===================================================================
>RCS file: src/org/eclipse/equinox/p2/download/strategy/IDownloadStrategyManager.java
>diff -N src/org/eclipse/equinox/p2/download/strategy/IDownloadStrategyManager.java
>--- /dev/null	1 Jan 1970 00:00:00 -0000
>+++ src/org/eclipse/equinox/p2/download/strategy/IDownloadStrategyManager.java	1 Jan 1970 00:00:00 -0000
>@@ -0,0 +1,20 @@
>+/*******************************************************************************
>+ * Copyright (c) 2007 Genuitec, LLC and others.
>+ * All rights reserved. This program and the accompanying materials
>+ * are made available under the terms of the Eclipse Public License v1.0
>+ * which accompanies this distribution, and is available at
>+ * http://www.eclipse.org/legal/epl-v10.html
>+ *
>+ * Contributors:
>+ *     Genuitec, LLC - initial API and implementation
>+ *******************************************************************************/
>+package org.eclipse.equinox.p2.download.strategy;
>+
>+public interface IDownloadStrategyManager {
>+
>+	IDownloadStrategy[] getKnownStrategies();
>+
>+	void add(IDownloadStrategy strategy);
>+
>+	void remove(IDownloadStrategy strategy);
>+}
>Index: src/org/eclipse/equinox/internal/p2/download/strategy/ThreadedDownloadStrategy.java
>===================================================================
>RCS file: src/org/eclipse/equinox/internal/p2/download/strategy/ThreadedDownloadStrategy.java
>diff -N src/org/eclipse/equinox/internal/p2/download/strategy/ThreadedDownloadStrategy.java
>--- /dev/null	1 Jan 1970 00:00:00 -0000
>+++ src/org/eclipse/equinox/internal/p2/download/strategy/ThreadedDownloadStrategy.java	1 Jan 1970 00:00:00 -0000
>@@ -0,0 +1,39 @@
>+/*******************************************************************************
>+ * Copyright (c) 2007 Genuitec, LLC and others.
>+ * All rights reserved. This program and the accompanying materials
>+ * are made available under the terms of the Eclipse Public License v1.0
>+ * which accompanies this distribution, and is available at
>+ * http://www.eclipse.org/legal/epl-v10.html
>+ *
>+ * Contributors:
>+ *     Genuitec, LLC - initial API and implementation
>+ *******************************************************************************/
>+package org.eclipse.equinox.internal.p2.download.strategy;
>+
>+import org.eclipse.core.runtime.IProgressMonitor;
>+import org.eclipse.core.runtime.IStatus;
>+import org.eclipse.equinox.p2.artifact.repository.IArtifactRepository;
>+import org.eclipse.equinox.p2.artifact.repository.IArtifactRepositoryWithRangeSupport;
>+import org.eclipse.equinox.p2.download.strategy.DownloadStrategyRequests;
>+import org.eclipse.equinox.p2.download.strategy.IDownloadStrategy;
>+
>+/** 
>+ * Place holder implementation for the threaded download strategy that will utilize
>+ * knowledge about certain artificat repositories for greater overall throughput.
>+ */
>+public class ThreadedDownloadStrategy implements IDownloadStrategy {
>+
>+	public IStatus getArtifacts(DownloadStrategyRequests[] requests, IProgressMonitor monitor) {
>+		// TODO Auto-generated method stub
>+		return null;
>+	}
>+
>+	public boolean isBetterThan(IDownloadStrategy other, IArtifactRepository artifactRepository) {
>+		// TODO Auto-generated method stub
>+		return false;
>+	}
>+
>+	public boolean supportsRepository(IArtifactRepository artifactRepository) {
>+		return artifactRepository instanceof IArtifactRepositoryWithRangeSupport;
>+	}
>+}
>Index: src/org/eclipse/equinox/internal/p2/download/strategy/DownloadStrategyManager.java
>===================================================================
>RCS file: src/org/eclipse/equinox/internal/p2/download/strategy/DownloadStrategyManager.java
>diff -N src/org/eclipse/equinox/internal/p2/download/strategy/DownloadStrategyManager.java
>--- /dev/null	1 Jan 1970 00:00:00 -0000
>+++ src/org/eclipse/equinox/internal/p2/download/strategy/DownloadStrategyManager.java	1 Jan 1970 00:00:00 -0000
>@@ -0,0 +1,48 @@
>+/*******************************************************************************
>+ * Copyright (c) 2007 Genuitec, LLC and others.
>+ * All rights reserved. This program and the accompanying materials
>+ * are made available under the terms of the Eclipse Public License v1.0
>+ * which accompanies this distribution, and is available at
>+ * http://www.eclipse.org/legal/epl-v10.html
>+ *
>+ * Contributors:
>+ *     Genuitec, LLC - initial API and implementation
>+ *******************************************************************************/
>+package org.eclipse.equinox.internal.p2.download.strategy;
>+
>+import java.util.ArrayList;
>+import java.util.List;
>+import org.eclipse.core.runtime.IConfigurationElement;
>+import org.eclipse.core.runtime.RegistryFactory;
>+import org.eclipse.equinox.internal.p2.download.DownloadActivator;
>+import org.eclipse.equinox.p2.download.strategy.IDownloadStrategy;
>+import org.eclipse.equinox.p2.download.strategy.IDownloadStrategyManager;
>+
>+public class DownloadStrategyManager implements IDownloadStrategyManager {
>+
>+	private List strategies = new ArrayList();
>+
>+	public DownloadStrategyManager() {
>+		IConfigurationElement[] elt = RegistryFactory.getRegistry().getConfigurationElementsFor(DownloadActivator.ID + ".downloadStrategies");
>+		for (int i = 0; i < elt.length; i++) {
>+			try {
>+				strategies.add((IDownloadStrategy) elt[i].createExecutableExtension("class"));
>+			} catch (Exception e) {
>+				// should do something with this
>+				e.printStackTrace();
>+			}
>+		}
>+	}
>+
>+	public void add(IDownloadStrategy strategy) {
>+		strategies.add(strategy);
>+	}
>+
>+	public void remove(IDownloadStrategy strategy) {
>+		strategies.remove(strategy);
>+	}
>+
>+	public IDownloadStrategy[] getKnownStrategies() {
>+		return (IDownloadStrategy[]) strategies.toArray(new IDownloadStrategy[strategies.size()]);
>+	}
>+}

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Attachments on bug 207802: 81472 | 83572 | 88433 | 88919