Merge branch 'REPO-1259' into 'master'

Repo 1259

Part of fix for Repo1259.

* remove commented out code
* fix code formatting (CMISAbstractDictionaryService)
* fix up how the CMIS dictionary is refreshed after a dictionary refresh: dictionaryListener.afterDictionaryInit() is called _after_ the dictionary is made live (including changes to CompiledModelsCache to achieve this).

See merge request !3
This commit is contained in:
Stefan Kopf
2016-11-03 16:14:02 +00:00
9 changed files with 138 additions and 218 deletions

View File

@@ -145,7 +145,7 @@
<dependency> <dependency>
<groupId>org.alfresco</groupId> <groupId>org.alfresco</groupId>
<artifactId>alfresco-core</artifactId> <artifactId>alfresco-core</artifactId>
<version>6.5</version> <version>6.8</version>
</dependency> </dependency>
<!-- <!--
| provided dependencies (are not transitive and not included in webapps) | provided dependencies (are not transitive and not included in webapps)

View File

@@ -73,20 +73,21 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
private final ReentrantReadWriteLock registryLock = new ReentrantReadWriteLock(); private final ReentrantReadWriteLock registryLock = new ReentrantReadWriteLock();
private final WriteLock registryWriteLock = registryLock.writeLock(); private final WriteLock registryWriteLock = registryLock.writeLock();
private final ReadLock registryReadLock = registryLock.readLock(); private final ReadLock registryReadLock = registryLock.readLock();
// note: cache is tenant-aware (if using TransctionalCache impl) // note: cache is tenant-aware (if using TransctionalCache impl)
private SimpleCache<String, CMISDictionaryRegistry> singletonCache; // eg. for openCmisDictionaryRegistry private SimpleCache<String, CMISDictionaryRegistry> cmisRegistryCache;
private final String KEY_OPENCMIS_DICTIONARY_REGISTRY = "key.openCmisDictionaryRegistry"; private final String KEY_OPENCMIS_DICTIONARY_REGISTRY = "key.openCmisDictionaryRegistry";
public void setTenantService(TenantService tenantService) public void setTenantService(TenantService tenantService)
{ {
this.tenantService = tenantService; this.tenantService = tenantService;
} }
/** /**
* Set the mapping service * Set the mapping service
* *
* @param cmisMapping CMISMapping * @param cmisMapping
* CMISMapping
*/ */
public void setCmisMapping(CMISMapping cmisMapping) public void setCmisMapping(CMISMapping cmisMapping)
{ {
@@ -96,7 +97,8 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
/** /**
* Set the property accessor mapping service * Set the property accessor mapping service
* *
* @param accessorMapping mapping * @param accessorMapping
* mapping
*/ */
public void setPropertyAccessorMapping(PropertyAccessorMapping accessorMapping) public void setPropertyAccessorMapping(PropertyAccessorMapping accessorMapping)
{ {
@@ -106,7 +108,8 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
/** /**
* Set the property lucene mapping service * Set the property lucene mapping service
* *
* @param luceneBuilderMapping mapping * @param luceneBuilderMapping
* mapping
*/ */
public void setPropertyLuceneBuilderMapping(PropertyLuceneBuilderMapping luceneBuilderMapping) public void setPropertyLuceneBuilderMapping(PropertyLuceneBuilderMapping luceneBuilderMapping)
{ {
@@ -116,7 +119,8 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
/** /**
* Set the dictionary Service * Set the dictionary Service
* *
* @param dictionaryService DictionaryService * @param dictionaryService
* DictionaryService
*/ */
public void setDictionaryService(DictionaryService dictionaryService) public void setDictionaryService(DictionaryService dictionaryService)
{ {
@@ -126,7 +130,8 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
/** /**
* Set the dictionary DAO * Set the dictionary DAO
* *
* @param dictionaryDAO DictionaryDAO * @param dictionaryDAO
* DictionaryDAO
*/ */
public void setDictionaryDAO(DictionaryDAO dictionaryDAO) public void setDictionaryDAO(DictionaryDAO dictionaryDAO)
{ {
@@ -135,63 +140,57 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
public void setSingletonCache(SimpleCache<String, CMISDictionaryRegistry> singletonCache) public void setSingletonCache(SimpleCache<String, CMISDictionaryRegistry> singletonCache)
{ {
this.singletonCache = singletonCache; this.cmisRegistryCache = singletonCache;
} }
protected interface DictionaryInitializer protected interface DictionaryInitializer
{ {
Collection<AbstractTypeDefinitionWrapper> createDefinitions(CMISDictionaryRegistry cmisRegistry); Collection<AbstractTypeDefinitionWrapper> createDefinitions(CMISDictionaryRegistry cmisRegistry);
Collection<AbstractTypeDefinitionWrapper> createDefinitions(CMISDictionaryRegistry cmisRegistry, CompiledModel model);
Collection<AbstractTypeDefinitionWrapper> createDefinitions(CMISDictionaryRegistry cmisRegistry,
CompiledModel model);
} }
protected abstract DictionaryInitializer getCoreDictionaryInitializer(); protected abstract DictionaryInitializer getCoreDictionaryInitializer();
protected abstract DictionaryInitializer getTenantDictionaryInitializer(); protected abstract DictionaryInitializer getTenantDictionaryInitializer();
protected CMISDictionaryRegistry getRegistry() protected CMISDictionaryRegistry getRegistry()
{ {
String tenant = TenantUtil.getCurrentDomain(); String tenant = TenantUtil.getCurrentDomain();
return getRegistry(tenant); return getRegistry(tenant);
} }
CMISDictionaryRegistry getRegistry(String tenant) CMISDictionaryRegistry getRegistry(String tenant)
{ {
CMISDictionaryRegistry cmisRegistry = null; CMISDictionaryRegistry cmisRegistry = null;
boolean readLockReleased = false;
//Make sure that DictionaryRegistry exist
dictionaryDAO.getDictionaryRegistry(tenant);
registryReadLock.lock(); String cacheKey = getCacheKey(tenant);
try
{
String cacheKey = getCacheKey(tenant);
cmisRegistry = singletonCache.get(cacheKey);
if(cmisRegistry == null)
{
registryReadLock.unlock();
readLockReleased = true;
registryWriteLock.lock(); registryReadLock.lock();
try try
{ {
cmisRegistry = singletonCache.get(cacheKey); cmisRegistry = cmisRegistryCache.get(cacheKey);
if(cmisRegistry == null) }
{ finally
cmisRegistry = createDictionaryRegistry(tenant); {
} registryReadLock.unlock();
} }
finally
{ if (cmisRegistry == null)
registryWriteLock.unlock(); {
} cmisRegistry = createDictionaryRegistry(tenant);
}
} registryWriteLock.lock();
finally try
{ {
if(!readLockReleased) cmisRegistryCache.put(cacheKey, cmisRegistry);
{ }
registryReadLock.unlock(); finally
} {
} registryWriteLock.unlock();
}
}
return cmisRegistry; return cmisRegistry;
} }
@@ -199,9 +198,8 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
/* /*
* (non-Javadoc) * (non-Javadoc)
* *
* @see * @see org.springframework.extensions.surf.util.AbstractLifecycleBean#
* org.springframework.extensions.surf.util.AbstractLifecycleBean#onBootstrap * onBootstrap (org.springframework.context.ApplicationEvent)
* (org.springframework.context.ApplicationEvent)
*/ */
@Override @Override
protected void onBootstrap(ApplicationEvent event) protected void onBootstrap(ApplicationEvent event)
@@ -233,42 +231,45 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
private String getCacheKey() private String getCacheKey()
{ {
String tenant = tenantService.getCurrentUserDomain(); String tenant = tenantService.getCurrentUserDomain();
return getCacheKey(tenant); return getCacheKey(tenant);
} }
private String getCacheKey(String tenant) private String getCacheKey(String tenant)
{ {
String cacheKey = KEY_OPENCMIS_DICTIONARY_REGISTRY + "." + tenant + "." + cmisMapping.getCmisVersion().toString(); String cacheKey = KEY_OPENCMIS_DICTIONARY_REGISTRY + "." + tenant + "."
return cacheKey; + cmisMapping.getCmisVersion().toString();
return cacheKey;
} }
protected CMISDictionaryRegistry createCoreDictionaryRegistry() protected CMISDictionaryRegistry createCoreDictionaryRegistry()
{ {
CMISDictionaryRegistryImpl cmisRegistry = new CMISDictionaryRegistryImpl(this, cmisMapping, dictionaryService, CMISDictionaryRegistryImpl cmisRegistry = new CMISDictionaryRegistryImpl(this, cmisMapping, dictionaryService,
getCoreDictionaryInitializer()); getCoreDictionaryInitializer());
cmisRegistry.init(); cmisRegistry.init();
return cmisRegistry; return cmisRegistry;
} }
protected CMISDictionaryRegistry createTenantDictionaryRegistry(String tenant) protected CMISDictionaryRegistry createTenantDictionaryRegistry(String tenant)
{ {
CMISDictionaryRegistryImpl cmisRegistry = new CMISDictionaryRegistryImpl(this, tenant, "", CMISDictionaryRegistryImpl cmisRegistry = new CMISDictionaryRegistryImpl(this, tenant, "", cmisMapping,
cmisMapping, dictionaryService, getTenantDictionaryInitializer()); dictionaryService, getTenantDictionaryInitializer());
cmisRegistry.init(); cmisRegistry.init();
return cmisRegistry; return cmisRegistry;
} }
protected CMISDictionaryRegistry createDictionaryRegistryWithWriteLock() protected CMISDictionaryRegistry createDictionaryRegistryWithWriteLock()
{ {
CMISDictionaryRegistry cmisRegistry = null; String tenant = TenantUtil.getCurrentDomain();
CMISDictionaryRegistry cmisRegistry = createDictionaryRegistry(tenant);
String tenant = TenantUtil.getCurrentDomain(); String cacheKey = getCacheKey(tenant);
registryWriteLock.lock(); registryWriteLock.lock();
try try
{ {
cmisRegistry = createDictionaryRegistry(tenant); // publish new registry
cmisRegistryCache.put(cacheKey, cmisRegistry);
} }
finally finally
{ {
@@ -280,20 +281,16 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
protected CMISDictionaryRegistry createDictionaryRegistry(String tenant) protected CMISDictionaryRegistry createDictionaryRegistry(String tenant)
{ {
CMISDictionaryRegistry cmisRegistry = null; CMISDictionaryRegistry cmisRegistry = null;
String cacheKey = getCacheKey(tenant);
if(tenant.equals(TenantService.DEFAULT_DOMAIN)) if (tenant.equals(TenantService.DEFAULT_DOMAIN))
{ {
cmisRegistry = createCoreDictionaryRegistry(); cmisRegistry = createCoreDictionaryRegistry();
} }
else else
{ {
cmisRegistry = createTenantDictionaryRegistry(tenant); cmisRegistry = createTenantDictionaryRegistry(tenant);
} }
// publish new registry
singletonCache.put(cacheKey, cmisRegistry);
return cmisRegistry; return cmisRegistry;
} }
@@ -373,7 +370,7 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
{ {
return getRegistry().getAssocDefByQName(cmisMapping.getCmisType(clazz)); return getRegistry().getAssocDefByQName(cmisMapping.getCmisType(clazz));
} }
@Override @Override
public TypeDefinitionWrapper findTypeByQueryName(String queryName) public TypeDefinitionWrapper findTypeByQueryName(String queryName)
{ {
@@ -418,15 +415,16 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
@Override @Override
public List<TypeDefinitionWrapper> getAllTypes() public List<TypeDefinitionWrapper> getAllTypes()
{ {
// TODO is there a way of not having to reconstruct this every time? // TODO is there a way of not having to reconstruct this every time?
return Collections.unmodifiableList(new ArrayList<TypeDefinitionWrapper>(getRegistry().getTypeDefs())); return Collections.unmodifiableList(new ArrayList<TypeDefinitionWrapper>(getRegistry().getTypeDefs()));
} }
@Override @Override
public List<TypeDefinitionWrapper> getAllTypes(boolean includeParent) public List<TypeDefinitionWrapper> getAllTypes(boolean includeParent)
{ {
// TODO is there a way of not having to reconstruct this every time? // TODO is there a way of not having to reconstruct this every time?
return Collections.unmodifiableList(new ArrayList<TypeDefinitionWrapper>(getRegistry().getTypeDefs(includeParent))); return Collections
.unmodifiableList(new ArrayList<TypeDefinitionWrapper>(getRegistry().getTypeDefs(includeParent)));
} }
@Override @Override
@@ -454,7 +452,7 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
@Override @Override
public void modelAdded(CompiledModel model, String tenantDomain) public void modelAdded(CompiledModel model, String tenantDomain)
{ {
getRegistry(tenantDomain).addModel(model); getRegistry(tenantDomain).addModel(model);
} }
/* /*
@@ -465,7 +463,7 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
@Override @Override
public void afterDictionaryInit() public void afterDictionaryInit()
{ {
createDictionaryRegistryWithWriteLock(); createDictionaryRegistryWithWriteLock();
} }
/* /*
@@ -480,8 +478,8 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
registryWriteLock.lock(); registryWriteLock.lock();
try try
{ {
String cacheKey = getCacheKey(); String cacheKey = getCacheKey();
singletonCache.remove(cacheKey); cmisRegistryCache.remove(cacheKey);
} }
finally finally
{ {
@@ -493,7 +491,7 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
public List<TypeDefinitionWrapper> getChildren(String typeId) public List<TypeDefinitionWrapper> getChildren(String typeId)
{ {
List<TypeDefinitionWrapper> children = getRegistry().getChildren(typeId); List<TypeDefinitionWrapper> children = getRegistry().getChildren(typeId);
for (TypeDefinitionWrapper child : children) for (TypeDefinitionWrapper child : children)
{ {
if (child != null && child.getTypeDefinition(false).getDisplayName() == null) if (child != null && child.getTypeDefinition(false).getDisplayName() == null)
@@ -501,7 +499,7 @@ public abstract class CMISAbstractDictionaryService extends AbstractLifecycleBea
child.updateDefinition(dictionaryService); child.updateDefinition(dictionaryService);
} }
} }
return children; return children;
} }
} }

View File

@@ -33,7 +33,6 @@ import java.util.LinkedList;
import java.util.List; import java.util.List;
import java.util.Map; import java.util.Map;
import org.alfresco.error.AlfrescoRuntimeException;
import org.alfresco.opencmis.dictionary.CMISAbstractDictionaryService.DictionaryInitializer; import org.alfresco.opencmis.dictionary.CMISAbstractDictionaryService.DictionaryInitializer;
import org.alfresco.opencmis.mapping.CMISMapping; import org.alfresco.opencmis.mapping.CMISMapping;
import org.alfresco.repo.dictionary.CompiledModel; import org.alfresco.repo.dictionary.CompiledModel;

View File

@@ -1,77 +0,0 @@
/*
* #%L
* Alfresco Data model classes
* %%
* Copyright (C) 2005 - 2016 Alfresco Software Limited
* %%
* This file is part of the Alfresco software.
* If the software was purchased under a paid Alfresco license, the terms of
* the paid license agreement will prevail. Otherwise, the software is
* provided under the following open source license terms:
*
* Alfresco is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Alfresco is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
* #L%
*/
package org.alfresco.opencmis.dictionary;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.ApplicationEvent;
import org.springframework.extensions.surf.util.AbstractLifecycleBean;
/**
* Temporary workaround for:
* <ul>
* <li>ACE-5041: CLONE - google docs content cannot be accessed via cmis</li>
* </ul>
*
* TODO: Remove this bean when rework for MNT-14819 is complete.
*
* @author Matt Ward
*/
public final class CMISDictionaryReload extends AbstractLifecycleBean
{
private static final Log log = LogFactory.getLog(CMISDictionaryReload.class);
private final CMISAbstractDictionaryService cmisDictService;
private final boolean enabled;
public CMISDictionaryReload(CMISAbstractDictionaryService cmisDictService, boolean enabled)
{
this.cmisDictService = cmisDictService;
this.enabled = enabled;
}
public void reload()
{
if (enabled)
{
// Avoid deadlock by making sure we already have a registry present.
cmisDictService.getRegistry();
log.debug("Reloading CMIS dictionary.");
cmisDictService.afterDictionaryInit();
}
}
@Override
protected void onBootstrap(ApplicationEvent event)
{
reload();
}
@Override
protected void onShutdown(ApplicationEvent event)
{
// Do nothing.
}
}

View File

@@ -29,6 +29,9 @@ import org.alfresco.repo.security.authentication.AuthenticationUtil;
import org.alfresco.repo.security.authentication.AuthenticationUtil.RunAsWork; import org.alfresco.repo.security.authentication.AuthenticationUtil.RunAsWork;
import org.alfresco.repo.tenant.TenantService; import org.alfresco.repo.tenant.TenantService;
import org.alfresco.util.cache.AbstractAsynchronouslyRefreshedCache; import org.alfresco.util.cache.AbstractAsynchronouslyRefreshedCache;
import org.alfresco.util.cache.RefreshableCacheEvent;
import org.alfresco.util.cache.RefreshableCacheListener;
import org.alfresco.util.cache.RefreshableCacheRefreshedEvent;
import org.apache.commons.logging.Log; import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory; import org.apache.commons.logging.LogFactory;
@@ -103,4 +106,49 @@ public class CompiledModelsCache extends AbstractAsynchronouslyRefreshedCache<Di
{ {
this.tenantService = tenantService; this.tenantService = tenantService;
} }
@Override
public void afterPropertiesSet() throws Exception
{
super.afterPropertiesSet();
// RefreshableCacheListener as anonymous class since CompileModelsCache already
// implements this interface, but expects to be invoked in different circumstances.
register(new RefreshableCacheListener()
{
@Override
public void onRefreshableCacheEvent(RefreshableCacheEvent event)
{
if (logger.isDebugEnabled())
{
logger.debug("Handling "+event.getClass().getSimpleName()+
", cache="+event.getCacheId()+
", key="+event.getKey());
}
if (event instanceof RefreshableCacheRefreshedEvent &&
event.getCacheId().equals(getCacheId()))
{
// notify registered listeners that dictionary has been initialised (population is complete).
// Note we do that here to ensure that the dictionary registry has been added to the cache,
// so that any dependencies (like the CMIS dictionary) will use the new dictionary.
for (DictionaryListener dictionaryListener : dictionaryDAO.getDictionaryListeners())
{
logger.debug("Calling afterDIctionaryInit ["+event.getClass().getSimpleName()+
", cache="+event.getCacheId()+
", key="+event.getKey()+
"] on "+
dictionaryListener.getClass().getSimpleName());
dictionaryListener.afterDictionaryInit();
}
}
}
@Override
public String getCacheId()
{
return CompiledModelsCache.this.getCacheId();
}
});
}
} }

View File

@@ -59,12 +59,6 @@ public class CoreDictionaryRegistryImpl extends AbstractDictionaryRegistry
dictionaryDeployer.onDictionaryInit(); dictionaryDeployer.onDictionaryInit();
} }
// notify registered listeners that dictionary has been initialised (population is complete)
for (DictionaryListener dictionaryListener : dictionaryDAO.getDictionaryListeners())
{
dictionaryListener.afterDictionaryInit();
}
// Done // Done
if (logger.isInfoEnabled()) if (logger.isInfoEnabled())
{ {
@@ -87,33 +81,7 @@ public class CoreDictionaryRegistryImpl extends AbstractDictionaryRegistry
protected QName putModelImpl(CompiledModel model) protected QName putModelImpl(CompiledModel model)
{ {
// TODO disallow model overrides for the core dictionary // TODO disallow model overrides for the core dictionary
// if(compiledModels.get(model.getModelDefinition().getName()) != null)
// {
// throw new AlfrescoRuntimeException("Cannot override existing model " + model.getModelDefinition().getName());
// }
//
// for(M2Namespace namespace : model.getM2Model().getNamespaces())
// {
// if(uriToModels.get(namespace.getUri()) != null)
// {
// throw new AlfrescoRuntimeException("Cannot override existing namespace " + namespace.getUri());
// }
// }
QName qname = super.putModelImpl(model); QName qname = super.putModelImpl(model);
// if(dictionaryDAO.isContextRefreshed())
// {
// for(DictionaryListener listener : dictionaryDAO.getDictionaryListeners())
// {
// if(listener instanceof ExtendedDictionaryListener)
// {
// ((ExtendedDictionaryListener)listener).coreModelAdded(model);
// }
// }
// }
return qname; return qname;
} }

View File

@@ -186,9 +186,6 @@ public class DictionaryDAOImpl implements DictionaryDAO, NamespaceDAO,
{ {
DictionaryRegistry dictionaryRegistry = new CoreDictionaryRegistryImpl( DictionaryRegistry dictionaryRegistry = new CoreDictionaryRegistryImpl(
this); this);
getThreadLocal().put("", dictionaryRegistry);
dictionaryRegistry.init();
getThreadLocal().remove("");
return dictionaryRegistry; return dictionaryRegistry;
} }
@@ -202,9 +199,6 @@ public class DictionaryDAOImpl implements DictionaryDAO, NamespaceDAO,
{ {
DictionaryRegistry dictionaryRegistry = new TenantDictionaryRegistryImpl( DictionaryRegistry dictionaryRegistry = new TenantDictionaryRegistryImpl(
DictionaryDAOImpl.this, tenant); DictionaryDAOImpl.this, tenant);
getThreadLocal().put(tenant, dictionaryRegistry);
dictionaryRegistry.init();
getThreadLocal().remove(tenant);
return dictionaryRegistry; return dictionaryRegistry;
} }
}, tenantService.getDomainUser( }, tenantService.getDomainUser(
@@ -233,7 +227,6 @@ public class DictionaryDAOImpl implements DictionaryDAO, NamespaceDAO,
// TODO Should be reworked when ACE-2001 will be implemented // TODO Should be reworked when ACE-2001 will be implemented
dictionaryRegistryCache.remove(tenant); dictionaryRegistryCache.remove(tenant);
dictionaryRegistryCache.refresh(tenant);
if (logger.isDebugEnabled()) if (logger.isDebugEnabled())
{ {

View File

@@ -221,12 +221,6 @@ public class TenantDictionaryRegistryImpl extends AbstractDictionaryRegistry
dictionaryDeployer.onDictionaryInit(); dictionaryDeployer.onDictionaryInit();
} }
// notify registered listeners that dictionary has been initialised (population is complete)
for (DictionaryListener dictionaryListener : dictionaryDAO.getDictionaryListeners())
{
dictionaryListener.afterDictionaryInit();
}
// Done // Done
if (logger.isInfoEnabled()) if (logger.isInfoEnabled())
{ {

View File

@@ -33,9 +33,6 @@ import org.alfresco.service.NotAuditable;
import org.alfresco.service.cmr.i18n.MessageLookup; import org.alfresco.service.cmr.i18n.MessageLookup;
import org.alfresco.service.namespace.QName; import org.alfresco.service.namespace.QName;
import com.sun.tools.xjc.outline.Aspect;
/** /**
* This interface represents the Repository Data Dictionary. The * This interface represents the Repository Data Dictionary. The