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authorChristian W. Damus2013-08-29 17:21:04 -0400
committerChristian W. Damus2013-09-06 14:38:59 -0400
commitfd811174e7210d1d1bdc1e18af8ced3ab2469d52 (patch)
tree14fa2e8b52c057b85058c5a175e440500a751023 /plugins/views/org.eclipse.papyrus.views.search
parentbdc0bb85cd600f2496b29e1006e0dbce106181eb (diff)
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415371: [CDO] Pluggable scope providers for workspace and selection search.
https://bugs.eclipse.org/bugs/show_bug.cgi?id=415371 Implement a new extension point for pluggable "scope providers" that determine the appropriate URIs to define the search scope based on the user's workbench selection, or implicitly everything in the workspace and/or in connected repositories.
Diffstat (limited to 'plugins/views/org.eclipse.papyrus.views.search')
-rw-r--r--plugins/views/org.eclipse.papyrus.views.search/build.properties6
-rw-r--r--plugins/views/org.eclipse.papyrus.views.search/plugin.xml12
-rw-r--r--plugins/views/org.eclipse.papyrus.views.search/schema/scopeProviders.exsd129
-rw-r--r--plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/IScopeProvider.java57
-rw-r--r--plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/ScopeCollector.java251
-rw-r--r--plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/WorkspaceScopeProvider.java122
6 files changed, 497 insertions, 80 deletions
diff --git a/plugins/views/org.eclipse.papyrus.views.search/build.properties b/plugins/views/org.eclipse.papyrus.views.search/build.properties
index 1b08f841b5e..53318077600 100644
--- a/plugins/views/org.eclipse.papyrus.views.search/build.properties
+++ b/plugins/views/org.eclipse.papyrus.views.search/build.properties
@@ -3,5 +3,7 @@ output.. = bin/
bin.includes = META-INF/,\
.,\
about.html,\
- plugin.properties
-src.includes = about.html
+ plugin.properties,\
+ plugin.xml
+src.includes = about.html,\
+ schema/
diff --git a/plugins/views/org.eclipse.papyrus.views.search/plugin.xml b/plugins/views/org.eclipse.papyrus.views.search/plugin.xml
new file mode 100644
index 00000000000..f10ef9096fa
--- /dev/null
+++ b/plugins/views/org.eclipse.papyrus.views.search/plugin.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?eclipse version="3.4"?>
+<plugin>
+ <extension-point id="scopeProviders" name="Papyrus Search Scope Providers" schema="schema/scopeProviders.exsd"/>
+ <extension
+ point="org.eclipse.papyrus.views.search.scopeProviders">
+ <scopeProvider
+ class="org.eclipse.papyrus.views.search.scope.WorkspaceScopeProvider">
+ </scopeProvider>
+ </extension>
+
+</plugin>
diff --git a/plugins/views/org.eclipse.papyrus.views.search/schema/scopeProviders.exsd b/plugins/views/org.eclipse.papyrus.views.search/schema/scopeProviders.exsd
new file mode 100644
index 00000000000..00ee7439413
--- /dev/null
+++ b/plugins/views/org.eclipse.papyrus.views.search/schema/scopeProviders.exsd
@@ -0,0 +1,129 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!-- Schema file written by PDE -->
+<schema targetNamespace="org.eclipse.papyrus.views.search" xmlns="http://www.w3.org/2001/XMLSchema">
+<annotation>
+ <appinfo>
+ <meta.schema plugin="org.eclipse.papyrus.views.search" id="scopeProviders" name="Papyrus Search Scope Providers"/>
+ </appinfo>
+ <documentation>
+ Pluggable providers of search scopes for workspace-wide and selection-based searches.
+ </documentation>
+ </annotation>
+
+ <element name="extension">
+ <annotation>
+ <appinfo>
+ <meta.element />
+ </appinfo>
+ </annotation>
+ <complexType>
+ <sequence minOccurs="1" maxOccurs="unbounded">
+ <element ref="scopeProvider"/>
+ </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="scopeProvider">
+ <complexType>
+ <attribute name="class" type="string" use="required">
+ <annotation>
+ <documentation>
+ A class implementing the &lt;tt&gt;IScopeProvider&lt;/tt&gt; protocol.
+ </documentation>
+ <appinfo>
+ <meta.attribute kind="java" basedOn=":org.eclipse.papyrus.views.search.scope.IScopeProvider"/>
+ </appinfo>
+ </annotation>
+ </attribute>
+ <attribute name="priority" type="string" use="default" value="0">
+ <annotation>
+ <documentation>
+ The non-negative priority of the scope provider; the default is 0 (zero). Providers are invoked by the search framework in priority order, from highest to lowest.
+ </documentation>
+ </annotation>
+ </attribute>
+ </complexType>
+ </element>
+
+ <annotation>
+ <appinfo>
+ <meta.section type="since"/>
+ </appinfo>
+ <documentation>
+ 1.0.0
+ </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>
+ /*****************************************************************************
+ * Copyright (c) 2013 CEA LIST 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:
+ * CEA LIST - Initial API and implementation
+ *
+ *****************************************************************************/
+ </documentation>
+ </annotation>
+
+</schema>
diff --git a/plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/IScopeProvider.java b/plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/IScopeProvider.java
new file mode 100644
index 00000000000..b3f0e914447
--- /dev/null
+++ b/plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/IScopeProvider.java
@@ -0,0 +1,57 @@
+/*****************************************************************************
+ * Copyright (c) 2013 CEA LIST 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:
+ * CEA LIST - Initial API and implementation
+ *****************************************************************************/
+package org.eclipse.papyrus.views.search.scope;
+
+import java.util.Collection;
+
+import org.eclipse.emf.common.util.URI;
+
+
+/**
+ * A pluggable provider of scopes used by the default {@link IScopeCollector}. Different providers are expected to handle
+ * different domains in which EMF model resources can be found. Examples of such domains include
+ * <ul>
+ * <li>the Eclipse Workspace</li>
+ * <li>connected model repositories (e.g., CDO)</li>
+ * <li>library models deployed in plug-ins</li>
+ * <li>models discoverable on the Word-Wide Web</li>
+ * </ul>
+ * <p>
+ * For workspace-wide searches, all scope providers are queried for their {@linkplain #getScope() full scope} and the resulting search scope is the
+ * union of all provided URIs.
+ * </p>
+ * <p>
+ * For selection-scoped searches, providers are queried in priority order for scopes based on each object selected in the workbench. The first
+ * provider that returns some URIs for a selected object wins; lower-priority providers are not consulted for additional URIs.
+ * </p>
+ */
+public interface IScopeProvider {
+
+ /**
+ * Gets URIs applicable to a workspace-wide search from the provider's domain. This should be whatever is appropriate to
+ * search all reasonably available resources in the provider's domain, whatever that means. For example, in a model
+ * repository scope provider, it may be reasonable to expect a search to extend into all connected repositories but not
+ * any that are currently disconnected (though it may be known where they are and how to connect).
+ *
+ * @return all URIs
+ */
+ Collection<URI> getScope();
+
+ /**
+ * Gets URIs applicable to a search that is constrained to a given object {@code selected} by the user in the workbench.
+ *
+ * @param selected
+ * an object selected in the workbench
+ * @return
+ */
+ Collection<URI> getScope(Object selected);
+}
diff --git a/plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/ScopeCollector.java b/plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/ScopeCollector.java
index fbcd9adff3f..74f22d98d04 100644
--- a/plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/ScopeCollector.java
+++ b/plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/ScopeCollector.java
@@ -14,32 +14,28 @@
*****************************************************************************/
package org.eclipse.papyrus.views.search.scope;
+import static org.eclipse.papyrus.views.search.scope.WorkspaceScopeProvider.findPapyrusModels;
+
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
+import java.util.SortedSet;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.Platform;
import org.eclipse.emf.common.util.URI;
-import org.eclipse.emf.ecore.EObject;
-import org.eclipse.emf.ecore.resource.Resource;
+import org.eclipse.emf.ecore.plugin.RegistryReader;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
-import org.eclipse.papyrus.infra.core.resource.ModelMultiException;
-import org.eclipse.papyrus.infra.core.resource.ModelSet;
-import org.eclipse.papyrus.infra.core.resource.NotFoundException;
-import org.eclipse.papyrus.infra.core.resource.sasheditor.SashModel;
-import org.eclipse.papyrus.infra.emf.utils.BusinessModelResolver;
-import org.eclipse.papyrus.infra.onefile.model.IPapyrusFile;
import org.eclipse.papyrus.views.search.Activator;
-import org.eclipse.papyrus.views.search.Messages;
-import org.eclipse.papyrus.views.search.utils.ModelUtils;
import org.eclipse.search.ui.ISearchPageContainer;
import org.eclipse.ui.IWorkingSet;
@@ -47,8 +43,12 @@ public class ScopeCollector implements IScopeCollector {
private static final ScopeCollector instance = new ScopeCollector();
+ private final Iterable<? extends IScopeProvider> scopeProviders;
+
private ScopeCollector() {
super();
+
+ scopeProviders = loadScopeProviders();
}
public final static ScopeCollector getInstance() {
@@ -128,55 +128,24 @@ public class ScopeCollector implements IScopeCollector {
Iterator<?> it = selection.iterator();
while(it.hasNext()) {
- Object object = (Object)it.next();
-
- if(object instanceof IPapyrusFile) {
- results.addAll(findPapyrusModels(((IPapyrusFile)object).getMainFile()));
- } else if(object instanceof IResource) {
- results.addAll(findPapyrusModels((IResource)object));
- } else {
- Object element = BusinessModelResolver.getInstance().getBusinessModel(object);
- if(element instanceof EObject) {
- // CDO resource *are* EObjects
- Resource eResource = (element instanceof Resource) ? (Resource) element : ((EObject)element).eResource();
- if(eResource != null) {
- ModelSet modelSet = null;
-
- try {
- modelSet = ModelUtils.openResource(eResource.getURI());
- SashModel sashModel = (SashModel)modelSet.getModelChecked(SashModel.MODEL_ID);
- Resource diResource = sashModel.getResource();
- if (diResource != null) {
- results.add(diResource.getURI());
- }
- } catch (ModelMultiException e) {
- //Do a workspace search instead
- results.addAll(createWorkspaceScope());
- } catch (NotFoundException e) {
- //Do a workspace search instead
- results.addAll(createWorkspaceScope());
- } finally {
- if (modelSet != null) {
- try {
- modelSet.unload();
- } catch (Exception e) {
- Activator.log.error(e);
- }
- }
- }
-
- } else {
- //Do a workspace search instead
- results.addAll(createWorkspaceScope());
- }
-
- } else {
- //Do a workspace search instead
- results.addAll(createWorkspaceScope());
+ Object next = it.next();
+
+ for (IScopeProvider provider : getScopeProviders()) {
+ Collection<URI> scope = provider.getScope(next);
+ if (!scope.isEmpty()) {
+ results.addAll(scope);
+
+ // don't consult the next provider
+ break;
}
-
}
}
+
+ if (results.isEmpty()) {
+ // search the workspace instead, then
+ results.addAll(createWorkspaceScope());
+ }
+
return results;
}
@@ -226,36 +195,162 @@ public class ScopeCollector implements IScopeCollector {
}
/**
- * Find all Papyrus models from a specific root
+ * Create a scope when the container is ISearchPageContainer.WORKSPACE_SCOPE
*
- * @param res
- * the root
* @return
- * the found Papyrus models
+ * the scope
*/
- protected Collection<URI> findPapyrusModels(IResource res) {
- ResourceVisitor visitor = new ResourceVisitor();
- try {
- res.accept(visitor, IResource.DEPTH_INFINITE);
- } catch (CoreException e) {
- Activator.log.warn(Messages.ScopeCollector_0 + res);
+ protected Collection<URI> createWorkspaceScope() {
+ Collection<URI> result = new ArrayList<URI>();
+
+ for (IScopeProvider next : getScopeProviders()) {
+ result.addAll(next.getScope());
}
+
+ return result;
+ }
- return visitor.getParticipantURIs();
+ private Iterable<? extends IScopeProvider> loadScopeProviders() {
+ return new ProvidersReader().load();
+ }
+
+ final Iterable<? extends IScopeProvider> getScopeProviders() {
+ List<IScopeProvider> result = new ArrayList<IScopeProvider>();
+
+ synchronized(scopeProviders) {
+ for (IScopeProvider next : scopeProviders) {
+ result.add(next);
+ }
+ }
+
+ return result;
+ }
+
+ //
+ // Nested types
+ //
+
+ private static class PriorityScopeProvider implements IScopeProvider, Comparable<PriorityScopeProvider> {
+ private final IScopeProvider delegate;
+
+ private final int priority;
+
+ public PriorityScopeProvider(IScopeProvider delegate, int priority) {
+ this.delegate = delegate;
+ this.priority = priority;
+ }
+
+ public int compareTo(PriorityScopeProvider o) {
+ // sort by descending priority
+ return o.priority - this.priority;
+ }
+
+ @Override
+ public int hashCode() {
+ return delegate.hashCode();
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ return (obj instanceof PriorityScopeProvider) && ((PriorityScopeProvider) obj).delegate.equals(delegate);
+ }
+
+ //
+ // API delegation
+ //
+
+ public Collection<URI> getScope() {
+ return delegate.getScope();
+ }
+
+ public Collection<URI> getScope(Object selected) {
+ return delegate.getScope(selected);
+ }
}
+
+ private class ProvidersReader extends RegistryReader {
+ private static final String EXT_PT = "scopeProviders"; //$NON-NLS-1$
+
+ private static final String TAG_PROVIDER = "scopeProvider"; //$NON-NLS-1$
+
+ private static final String ATTR_CLASS = "class"; //$NON-NLS-1$
+
+ private static final String ATTR_PRIORITY = "priority"; //$NON-NLS-1$
+
+ private final SortedSet<PriorityScopeProvider> providers = new java.util.TreeSet<PriorityScopeProvider>();
- /**
- * Create a scope when the container is ISearchPageContainer.WORKSPACE_SCOPE
- *
- * @return
- * the scope
- */
- protected Collection<URI> createWorkspaceScope() {
+ ProvidersReader() {
+ super(Platform.getExtensionRegistry(), Activator.PLUGIN_ID, EXT_PT);
+ }
+
+ Iterable<? extends IScopeProvider> load() {
+ synchronized(providers) {
+ providers.clear();
+ readRegistry();
+ }
+
+ return providers;
+ }
+
+ @Override
+ protected boolean readElement(IConfigurationElement element, boolean add) {
+ boolean result = false;
- //Go through the workspace root
- IResource root = ResourcesPlugin.getWorkspace().getRoot();
+ if(TAG_PROVIDER.equals(element.getName())) {
+ result = true;
- return findPapyrusModels(root);
- }
+ String className = element.getAttribute(ATTR_CLASS);
+ if((className == null) || (className.length() == 0)) {
+ logMissingAttribute(element, ATTR_CLASS);
+ } else if(add) {
+ addProvider(element, className);
+ } else {
+ removeProvider(element, className);
+ }
+ }
+
+ return result;
+ }
+
+ private void addProvider(IConfigurationElement element, String className) {
+ try {
+ Object provider = element.createExecutableExtension(ATTR_CLASS);
+ if(!(provider instanceof IScopeProvider)) {
+ Activator.log.error("Scope provider extension does not implement IScopeProvider interface: " + className, null); //$NON-NLS-1$
+ } else {
+ String priorityString = element.getAttribute(ATTR_PRIORITY);
+ int priority = 0;
+
+ try {
+ if((priorityString) != null && (priorityString.length() > 0)) {
+ priority = Integer.parseInt(priorityString);
+ if(priority < 0) {
+ Activator.log.warn("Negative priority in scope provider " + className); //$NON-NLS-1$
+ priority = 0;
+ }
+ }
+ } catch (NumberFormatException e) {
+ Activator.log.warn("Not an integer priority in scope provider " + className); //$NON-NLS-1$
+ }
+
+ synchronized(providers) {
+ providers.add(new PriorityScopeProvider((IScopeProvider)provider, priority));
+ }
+ }
+ } catch (CoreException e) {
+ Activator.getDefault().getLog().log(e.getStatus());
+ }
+ }
+
+ private void removeProvider(IConfigurationElement element, String className) {
+ synchronized(providers) {
+ for (Iterator<PriorityScopeProvider> iter = providers.iterator(); iter.hasNext();) {
+ if (iter.next().delegate.getClass().getName().equals(className)) {
+ iter.remove();
+ }
+ }
+ }
+ }
+ }
}
diff --git a/plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/WorkspaceScopeProvider.java b/plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/WorkspaceScopeProvider.java
new file mode 100644
index 00000000000..969d8ceca89
--- /dev/null
+++ b/plugins/views/org.eclipse.papyrus.views.search/src/org/eclipse/papyrus/views/search/scope/WorkspaceScopeProvider.java
@@ -0,0 +1,122 @@
+/*****************************************************************************
+ * Copyright (c) 2013 CEA LIST 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:
+ * CEA LIST - Initial API and implementation
+ * Christian W. Damus (CEA LIST) - Extracted some of the ScopeCollector implementation.
+ *
+ *****************************************************************************/
+package org.eclipse.papyrus.views.search.scope;
+
+import java.util.Collection;
+import java.util.Collections;
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.ResourcesPlugin;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.emf.common.util.URI;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.ecore.resource.Resource;
+import org.eclipse.papyrus.infra.core.resource.ModelMultiException;
+import org.eclipse.papyrus.infra.core.resource.ModelSet;
+import org.eclipse.papyrus.infra.core.resource.NotFoundException;
+import org.eclipse.papyrus.infra.core.resource.sasheditor.SashModel;
+import org.eclipse.papyrus.infra.emf.utils.BusinessModelResolver;
+import org.eclipse.papyrus.infra.onefile.model.IPapyrusFile;
+import org.eclipse.papyrus.views.search.Activator;
+import org.eclipse.papyrus.views.search.Messages;
+import org.eclipse.papyrus.views.search.utils.ModelUtils;
+
+
+/**
+ * The most basic scope-provider implementation, getting scopes for workspace resources.
+ */
+public class WorkspaceScopeProvider implements IScopeProvider {
+
+ public WorkspaceScopeProvider() {
+ super();
+ }
+
+ public Collection<URI> getScope() {
+ //Go through the workspace root
+ IResource root = ResourcesPlugin.getWorkspace().getRoot();
+
+ return findPapyrusModels(root);
+ }
+
+ public Collection<URI> getScope(Object object) {
+ Collection<URI> results;
+
+ if(object instanceof IPapyrusFile) {
+ results = findPapyrusModels(((IPapyrusFile)object).getMainFile());
+ } else if(object instanceof IResource) {
+ results = findPapyrusModels((IResource)object);
+ } else {
+ Object element = BusinessModelResolver.getInstance().getBusinessModel(object);
+ if(element instanceof EObject) {
+ // CDO resource *are* EObjects
+ Resource eResource = (element instanceof Resource) ? (Resource) element : ((EObject)element).eResource();
+ if(eResource != null) {
+ ModelSet modelSet = null;
+
+ try {
+ modelSet = ModelUtils.openResource(eResource.getURI());
+ SashModel sashModel = (SashModel)modelSet.getModelChecked(SashModel.MODEL_ID);
+ Resource diResource = sashModel.getResource();
+ if (diResource != null) {
+ results = Collections.singletonList(diResource.getURI());
+ } else {
+ results = Collections.emptyList();
+ }
+ } catch (ModelMultiException e) {
+ results = Collections.emptyList();
+ } catch (NotFoundException e) {
+ results = Collections.emptyList();
+ } finally {
+ if (modelSet != null) {
+ try {
+ modelSet.unload();
+ } catch (Exception e) {
+ Activator.log.error(e);
+ }
+ }
+ }
+
+ } else {
+ results = Collections.emptyList();
+ }
+
+ } else {
+ results = Collections.emptyList();
+ }
+
+ }
+
+ return results;
+ }
+
+ /**
+ * Find all Papyrus models from a specific root
+ *
+ * @param res
+ * the root
+ * @return
+ * the found Papyrus models
+ */
+ static Collection<URI> findPapyrusModels(IResource res) {
+ ResourceVisitor visitor = new ResourceVisitor();
+ try {
+ res.accept(visitor, IResource.DEPTH_INFINITE);
+ } catch (CoreException e) {
+ Activator.log.warn(Messages.ScopeCollector_0 + res);
+ }
+
+ return visitor.getParticipantURIs();
+ }
+
+}

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