org.neo4j.cypher.export.DatabaseSubGraph Maven / Gradle / Ivy

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/*
 * Copyright (c) 2002-2019 "Neo4j,"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.neo4j.cypher.export;

import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.Transaction;
import org.neo4j.graphdb.schema.ConstraintDefinition;
import org.neo4j.graphdb.schema.IndexDefinition;

public class DatabaseSubGraph implements SubGraph
{
    private final Transaction transaction;

    public DatabaseSubGraph( Transaction transaction )
    {
        this.transaction = transaction;
    }

    public static SubGraph from( Transaction transaction )
    {
        return new DatabaseSubGraph( transaction );
    }

    @Override
    public Iterable getNodes()
    {
        return transaction.getAllNodes();
    }

    @Override
    public Iterable getRelationships()
    {
        return transaction.getAllRelationships();
    }

    @Override
    public boolean contains( Relationship relationship )
    {
        return transaction.getRelationshipById( relationship.getId() ) != null;
    }

    @Override
    public Iterable getIndexes()
    {
        return transaction.schema().getIndexes();
    }

    @Override
    public Iterable getConstraints()
    {
        return transaction.schema().getConstraints();
    }
}