| /** |
| * 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.entity.model; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import java.util.Objects; |
| |
| import org.apache.http.annotation.Immutable; |
| import org.apache.rya.api.domain.RyaIRI; |
| import org.apache.rya.indexing.entity.storage.TypeStorage; |
| |
| import com.google.common.collect.ImmutableSet; |
| |
| import edu.umd.cs.findbugs.annotations.DefaultAnnotation; |
| import edu.umd.cs.findbugs.annotations.NonNull; |
| |
| /** |
| * Defines the structure of an {@link TypedEntity}. |
| * </p> |
| * For example, suppose you want a {@link Type} that defines what properties are |
| * available for icecream. It could be modeled like this: |
| * <pre> |
| * Type ID: <urn:icecream> |
| * Properties: <urn:brand> |
| * <urn:flavor> |
| * <urn:ingredients> |
| * <urn:nutritionalInformation> |
| * </pre> |
| */ |
| @Immutable |
| @DefaultAnnotation(NonNull.class) |
| public class Type { |
| |
| /** |
| * Uniquely identifies the Type within a {@link TypeStorage}. |
| */ |
| private final RyaIRI id; |
| |
| /** |
| * The names of {@link Property}s that may be part of an {@link TypedEntity} of this type. |
| */ |
| private final ImmutableSet<RyaIRI> propertyNames; |
| |
| /** |
| * Constructs an instance of {@link Type}. |
| * |
| * @param id - Uniquely identifies the Type within a {@link TypeStorage}. (not null) |
| * @param propertyNames - The names of {@link Property}s that may be part of an {@link TypedEntity} of this type. (not null) |
| */ |
| public Type(final RyaIRI id, final ImmutableSet<RyaIRI> propertyNames) { |
| this.id = requireNonNull(id); |
| this.propertyNames = requireNonNull(propertyNames); |
| } |
| |
| /** |
| * @return Uniquely identifies the Type within a {@link TypeStorage}. |
| */ |
| public RyaIRI getId() { |
| return id; |
| } |
| |
| /** |
| * @return The names of {@link Property}s that may be part of an {@link TypedEntity} of this type. |
| */ |
| public ImmutableSet<RyaIRI> getPropertyNames() { |
| return propertyNames; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(id, propertyNames); |
| } |
| |
| @Override |
| public boolean equals(final Object o) { |
| if(this == o) { |
| return true; |
| } |
| if(o instanceof Type) { |
| final Type type = (Type) o; |
| return Objects.equals(id, type.id) && |
| Objects.equals(propertyNames, type.propertyNames); |
| } |
| return false; |
| } |
| } |