| /* |
| * 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.jclouds.apis; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static com.google.common.base.Strings.emptyToNull; |
| |
| import org.jclouds.View; |
| import org.jclouds.util.TypeTokenUtils; |
| |
| import com.google.common.base.Predicate; |
| import com.google.common.base.Predicates; |
| import com.google.common.reflect.TypeToken; |
| |
| /** |
| * Container for api filters (predicates). |
| */ |
| public class ApiPredicates { |
| |
| /** |
| * Returns all apis available to jclouds regardless of type. |
| * |
| * @return all available apis |
| */ |
| public static Predicate<ApiMetadata> all() { |
| return Predicates.<ApiMetadata> alwaysTrue(); |
| } |
| |
| /** |
| * Returns all apis with the given id. |
| * |
| * @param id |
| * the id of the api to return |
| * |
| * @return the apis with the given id |
| */ |
| public static Predicate<ApiMetadata> id(final String id) { |
| checkNotNull(emptyToNull(id), "id must be defined"); |
| return new Predicate<ApiMetadata>() { |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean apply(ApiMetadata apiMetadata) { |
| return apiMetadata.getId().equals(id); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String toString() { |
| return "id(" + id + ")"; |
| } |
| }; |
| } |
| |
| /** |
| * Returns all apis who's contexts are assignable from the parameter |
| * |
| * @param type |
| * the type of the context to search for |
| * |
| * @return the apis with contexts assignable from given type |
| */ |
| public static Predicate<ApiMetadata> contextAssignableFrom(final TypeToken<?> type) { |
| checkNotNull(type, "context must be defined"); |
| return new Predicate<ApiMetadata>() { |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean apply(ApiMetadata apiMetadata) { |
| return TypeTokenUtils.isSupertypeOf(type, apiMetadata.getContext()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String toString() { |
| return "contextAssignableFrom(" + type + ")"; |
| } |
| }; |
| } |
| |
| /** |
| * Returns all apis who's contexts are transformable to the parameter |
| * |
| * @param type |
| * the type of the context to search for |
| * |
| * @return the apis with contexts transformable to the given type |
| */ |
| public static Predicate<ApiMetadata> viewableAs(final TypeToken<?> type) { |
| checkNotNull(type, "context must be defined"); |
| return new Predicate<ApiMetadata>() { |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean apply(ApiMetadata apiMetadata) { |
| for (TypeToken<? extends View> to : apiMetadata.getViews()) |
| if (TypeTokenUtils.isSupertypeOf(type, to)) |
| return true; |
| return false; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String toString() { |
| return "viewableAs(" + type + ")"; |
| } |
| }; |
| } |
| } |