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Eclipse JNoSQL Mapping, Artemis API, to document NoSQL databases
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/*
 *  Copyright (c) 2019 Otávio Santana and others
 *   All rights reserved. This program and the accompanying materials
 *   are made available under the terms of the Eclipse Public License v1.0
 *   and Apache License v2.0 which accompanies this distribution.
 *   The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 *   and the Apache License v2.0 is available at http://www.opensource.org/licenses/apache2.0.php.
 *
 *   You may elect to redistribute this code under either of these licenses.
 *
 *   Contributors:
 *
 *   Otavio Santana
 */
package org.jnosql.artemis.document;

import org.jnosql.artemis.Page;
import org.jnosql.artemis.Pagination;

import java.util.Collection;
import java.util.List;
import java.util.Objects;
import java.util.function.Supplier;
import java.util.stream.Collectors;
import java.util.stream.Stream;

/**
 * An implementation of {@link Page} to Column.
 *
 * @param  the entity type
 */
final class DocumentPage implements Page {

    private final DocumentTemplate template;

    private final List entities;

    private final DocumentQueryPagination query;


    DocumentPage(DocumentTemplate template, List entities, DocumentQueryPagination query) {
        this.template = template;
        this.entities = entities;
        this.query = query;
    }

    @Override
    public Pagination getPagination() {
        return query.getPagination();
    }

    @Override
    public Page next() {
        return template.select(query.next());
    }

    @Override
    public List getContent() {
        return entities;
    }

    @Override
    public > C getContent(Supplier collectionFactory) {
        Objects.requireNonNull(collectionFactory, "collectionFactory is required");
        return get().collect(Collectors.toCollection(collectionFactory));
    }

    @Override
    public Stream get() {
        return entities.stream();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        DocumentPage that = (DocumentPage) o;
        return Objects.equals(entities, that.entities) &&
                Objects.equals(query, that.query);
    }

    @Override
    public int hashCode() {
        return Objects.hash(entities, query);
    }

    @Override
    public String toString() {
        return "DocumentPage{" +
                "entities=" + entities +
                ", query=" + query +
                '}';
    }
}