ModelBuilder.java
- /*
- * *********************************************************************************************************************
- *
- * blueMarine II: Semantic Media Centre
- * http://tidalwave.it/projects/bluemarine2
- *
- * Copyright (C) 2015 - 2021 by Tidalwave s.a.s. (http://tidalwave.it)
- *
- * *********************************************************************************************************************
- *
- * Licensed 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.
- *
- * *********************************************************************************************************************
- *
- * git clone https://bitbucket.org/tidalwave/bluemarine2-src
- * git clone https://github.com/tidalwave-it/bluemarine2-src
- *
- * *********************************************************************************************************************
- */
- package it.tidalwave.bluemarine2.util;
- import javax.annotation.Nonnull;
- import javax.annotation.concurrent.ThreadSafe;
- import java.util.List;
- import java.util.Optional;
- import java.util.stream.Stream;
- import org.eclipse.rdf4j.model.IRI;
- import org.eclipse.rdf4j.model.Model;
- import org.eclipse.rdf4j.model.Resource;
- import org.eclipse.rdf4j.model.Statement;
- import org.eclipse.rdf4j.model.Value;
- import org.eclipse.rdf4j.model.impl.TreeModel;
- /***********************************************************************************************************************
- *
- * Unlike the similar class in RDF4J, this is thread-safe and can merge to similar objects.
- *
- * @author Fabrizio Giudici
- *
- **********************************************************************************************************************/
- @ThreadSafe
- public class ModelBuilder
- {
- private final Model model = new TreeModel();
- @Nonnull private final Resource[] contexts;
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- public ModelBuilder (@Nonnull final Resource ... contexts)
- {
- this.contexts = contexts;
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized Model toModel()
- {
- return new TreeModel(model);
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder with (@Nonnull final Resource subject,
- @Nonnull final IRI predicate,
- @Nonnull final Value object,
- @Nonnull final Resource... contexts)
- {
- model.add(subject, predicate, object, contexts);
- return this;
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder with (@Nonnull final Resource subjext,
- @Nonnull final IRI predicate,
- @Nonnull final Optional<Value> optionalObject,
- @Nonnull final Resource... contexts)
- {
- return optionalObject.map(object -> ModelBuilder.this.with(subjext, predicate, object, contexts)).orElse(this);
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder withOptional (@Nonnull final Optional<? extends Resource> optionalSubject,
- @Nonnull final IRI predicate,
- @Nonnull final Value object)
- {
- return optionalSubject.map(subject -> ModelBuilder.this.with(subject, predicate, object)).orElse(this);
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder withOptional (@Nonnull final Resource subject,
- @Nonnull final IRI predicate,
- @Nonnull final Optional<? extends Value> optionalObject)
- {
- return optionalObject.map(object -> ModelBuilder.this.with(subject, predicate, object)).orElse(this);
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder withOptional (@Nonnull final Optional<? extends Resource> optionalSubject,
- @Nonnull final IRI predicate,
- @Nonnull final Optional<? extends Value> optionalObject)
- {
- return optionalObject.map(object -> withOptional(optionalSubject, predicate, object)).orElse(this);
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder with (@Nonnull final List<? extends Resource> subjects,
- @Nonnull final IRI predicate,
- @Nonnull final Value object)
- {
- subjects.forEach(subject -> ModelBuilder.this.with(subject, predicate, object)); // FIXME ?? this = withOptional(...)
- return this;
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder with (@Nonnull final List<? extends Resource> subjects,
- @Nonnull final IRI predicate,
- @Nonnull final List<? extends Value> objects)
- {
- assert subjects.size() == objects.size();
- for (int i = 0; i < subjects.size(); i++)
- {
- ModelBuilder.this.with(subjects.get(i), predicate, objects.get(i)); // FIXME ?? this = withOptional(...)
- }
- return this;
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder with (@Nonnull final Resource subject,
- @Nonnull final IRI predicate,
- @Nonnull final Stream<? extends Value> objects)
- {
- objects.forEach(object -> ModelBuilder.this.with(subject, predicate, object)); // FIXME ?? this = withOptional(...)
- return this;
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder withOptional (@Nonnull final Optional<? extends Resource> subject,
- @Nonnull final IRI predicate,
- @Nonnull final Stream<? extends Value> objects)
- {
- if (subject.isPresent())
- {
- objects.forEach(object -> withOptional(subject, predicate, object)); // FIXME ?? this = withOptional(...)
- }
- return this;
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder with (@Nonnull final Statement statement)
- {
- model.add(statement);
- return this;
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder with (@Nonnull final Optional<ModelBuilder> optionalBuiilder)
- {
- optionalBuiilder.ifPresent(ModelBuilder.this::with);
- return this;
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder with (@Nonnull final ModelBuilder other)
- {
- return ModelBuilder.this.with(other.toModel());
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder with (@Nonnull final Model other)
- {
- other.forEach(model::add);
- return this;
- }
- /*******************************************************************************************************************
- *
- *
- *
- ******************************************************************************************************************/
- @Nonnull
- public synchronized ModelBuilder with (@Nonnull final List<ModelBuilder> others)
- {
- others.stream().map(ModelBuilder::toModel).forEach(m -> m.forEach(model::add));
- return this;
- }
- }