| /** |
| * 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.rya.indexing.geotemporal.storage; |
| |
| import java.util.Collection; |
| import java.util.Optional; |
| |
| import org.apache.rya.api.domain.RyaIRI; |
| import org.apache.rya.indexing.IndexingExpr; |
| import org.apache.rya.indexing.geotemporal.GeoTemporalIndexer; |
| import org.apache.rya.indexing.geotemporal.model.Event; |
| import org.apache.rya.indexing.mongodb.update.RyaObjectStorage; |
| |
| public interface EventStorage extends RyaObjectStorage<Event> { |
| /** |
| * Search for {@link Event}s from the storage by its subject. |
| * Will query based on present parameters. |
| * |
| * @param subject - The subject key to find events. |
| * @param geoFilters - The geo filters to find Events. |
| * @param temporalFilters - The temporal filters to find Events. |
| * @return The {@link Event}, if one exists for the subject. |
| * @throws ObjectStorageException A problem occurred while fetching the Entity from the storage. |
| */ |
| public Collection<Event> search(final Optional<RyaIRI> subject, Optional<Collection<IndexingExpr>> geoFilters, Optional<Collection<IndexingExpr>> temporalFilters) throws ObjectStorageException; |
| |
| /** |
| * Indicates a problem while interacting with an {@link EventStorage}. |
| */ |
| public static class EventStorageException extends ObjectStorageException { |
| private static final long serialVersionUID = 1L; |
| |
| /** |
| * Constructs a new exception with the specified detail message. The |
| * cause is not initialized, and may subsequently be initialized by |
| * a call to {@link #initCause}. |
| * |
| * @param message the detail message. The detail message is saved for |
| * later retrieval by the {@link #getMessage()} method. |
| */ |
| public EventStorageException(final String message) { |
| super(message); |
| } |
| |
| /** |
| * Constructs a new exception with the specified detail message and |
| * cause. <p>Note that the detail message associated with |
| * {@code cause} is <i>not</i> automatically incorporated in |
| * this exception's detail message. |
| * |
| * @param message the detail message (which is saved for later retrieval |
| * by the {@link #getMessage()} method). |
| * @param cause the cause (which is saved for later retrieval by the |
| * {@link #getCause()} method). (A <tt>null</tt> value is |
| * permitted, and indicates that the cause is nonexistent or |
| * unknown.) |
| */ |
| public EventStorageException(final String message, final Throwable cause) { |
| super(message, cause); |
| } |
| } |
| |
| /** |
| * An {@link Event} could not be created because one already exists for the Subject. |
| */ |
| public static class EventAlreadyExistsException extends EventStorageException { |
| private static final long serialVersionUID = 1L; |
| |
| public EventAlreadyExistsException(final String message) { |
| super(message); |
| } |
| |
| public EventAlreadyExistsException(final String message, final Throwable cause) { |
| super(message, cause); |
| } |
| } |
| |
| /** |
| * An {@link TypedEvent} could not be updated because the old state does not |
| * match the current state. |
| */ |
| public static class StaleUpdateException extends EventStorageException { |
| private static final long serialVersionUID = 1L; |
| |
| public StaleUpdateException(final String message) { |
| super(message); |
| } |
| |
| public StaleUpdateException(final String message, final Throwable cause) { |
| super(message, cause); |
| } |
| } |
| |
| /** |
| * A {@link EventFilter} is a translation from an {@link IndexingExpr} |
| * to a format the {@link GeoTemporalIndexer} can use to easily determine which |
| * filter function is being used. |
| * |
| * @param T - The type of |
| */ |
| interface EventFilter<T> { |
| /** |
| * Gets the translated query friendly form of the filter. |
| */ |
| public T getQueryObject(); |
| } |
| |
| /** |
| * Factory for getting the {@link EventFilter} from an {@link IndexingExpr}. |
| */ |
| interface EventFilterFactory<T> { |
| public EventFilter<T> getSearchFunction(final IndexingExpr filter); |
| } |
| } |