/**
* 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.ambari.server.controller.internal;
import org.apache.ambari.server.controller.spi.NoSuchParentResourceException;
import org.apache.ambari.server.controller.spi.NoSuchResourceException;
import org.apache.ambari.server.controller.spi.Predicate;
import org.apache.ambari.server.controller.spi.Request;
import org.apache.ambari.server.controller.spi.RequestStatus;
import org.apache.ambari.server.controller.spi.Resource;
import org.apache.ambari.server.controller.spi.ResourceAlreadyExistsException;
import org.apache.ambari.server.controller.spi.SystemException;
import org.apache.ambari.server.controller.spi.UnsupportedPropertyException;
import org.apache.ambari.server.orm.entities.ViewEntity;
import org.apache.ambari.server.view.ViewRegistry;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
/**
* Resource provider for view instances.
*/
public class ViewResourceProvider extends AbstractResourceProvider {
/**
* View property id constants.
*/
public static final String VIEW_NAME_PROPERTY_ID = "ViewInfo/view_name";
/**
* The key property ids for a view resource.
*/
private static Map<Resource.Type, String> keyPropertyIds = new HashMap<Resource.Type, String>();
static {
keyPropertyIds.put(Resource.Type.View, VIEW_NAME_PROPERTY_ID);
}
/**
* The property ids for a view resource.
*/
private static Set<String> propertyIds = new HashSet<String>();
static {
propertyIds.add(VIEW_NAME_PROPERTY_ID);
}
// ----- Constructors ------------------------------------------------------
/**
* Construct a view resource provider.
*/
public ViewResourceProvider() {
super(propertyIds, keyPropertyIds);
}
// ----- ResourceProvider --------------------------------------------------
@Override
public RequestStatus createResources(Request request)
throws SystemException, UnsupportedPropertyException,
ResourceAlreadyExistsException, NoSuchParentResourceException {
throw new UnsupportedOperationException("Not yet supported.");
}
@Override
public Set<Resource> getResources(Request request, Predicate predicate)
throws SystemException, UnsupportedPropertyException, NoSuchResourceException, NoSuchParentResourceException {
Set<Resource> resources = new HashSet<Resource>();
ViewRegistry viewRegistry = ViewRegistry.getInstance();
Set<String> requestedIds = getRequestPropertyIds(request, predicate);
Set<Map<String, Object>> propertyMaps = getPropertyMaps(predicate);
if (propertyMaps.isEmpty()) {
propertyMaps.add(Collections.<String, Object>emptyMap());
}
for (Map<String, Object> propertyMap : propertyMaps) {
String viewName = (String) propertyMap.get(VIEW_NAME_PROPERTY_ID);
for (ViewEntity viewDefinition : viewRegistry.getDefinitions()){
if (viewName == null || viewName.equals(viewDefinition.getCommonName())) {
Resource resource = new ResourceImpl(Resource.Type.View);
setResourceProperty(resource, VIEW_NAME_PROPERTY_ID, viewDefinition.getCommonName(), requestedIds);
resources.add(resource);
}
}
}
return resources;
}
@Override
public RequestStatus updateResources(Request request, Predicate predicate)
throws SystemException, UnsupportedPropertyException, NoSuchResourceException, NoSuchParentResourceException {
throw new UnsupportedOperationException("Not yet supported.");
}
@Override
public RequestStatus deleteResources(Predicate predicate)
throws SystemException, UnsupportedPropertyException, NoSuchResourceException, NoSuchParentResourceException {
throw new UnsupportedOperationException("Not yet supported.");
}
@Override
public Map<Resource.Type, String> getKeyPropertyIds() {
return keyPropertyIds;
}
// ----- AbstractResourceProvider ------------------------------------------
@Override
protected Set<String> getPKPropertyIds() {
return new HashSet<String>(keyPropertyIds.values());
}
}