/*
 * Copyright (c) "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 <http://www.gnu.org/licenses/>.
 */
package org.neo4j.kernel.impl.newapi;

import org.neo4j.common.EntityType;
import org.neo4j.exceptions.KernelException;
import org.neo4j.internal.kernel.api.IndexQueryConstraints;
import org.neo4j.internal.kernel.api.RelationshipTypeIndexCursor;
import org.neo4j.internal.kernel.api.TokenPredicate;
import org.neo4j.internal.kernel.api.TokenReadSession;
import org.neo4j.internal.kernel.api.Write;
import org.neo4j.internal.schema.IndexDescriptor;
import org.neo4j.internal.schema.IndexOrder;
import org.neo4j.internal.schema.SchemaDescriptors;
import org.neo4j.kernel.api.KernelTransaction;

public class RelationshipTypeIndexOrderTest extends TokenIndexOrderTestBase<RelationshipTypeIndexCursor> {

    @Override
    protected long entityWithToken(KernelTransaction tx, String name) throws Exception {
        Write write = tx.dataWrite();
        long sourceNode = write.nodeCreate();
        long targetNode = write.nodeCreate();

        return write.relationshipCreate(
                sourceNode, tx.tokenWrite().relationshipTypeGetOrCreateForName(name), targetNode);
    }

    @Override
    protected RelationshipTypeIndexCursor getIndexCursor(KernelTransaction tx) {
        return tx.cursors().allocateRelationshipTypeIndexCursor(tx.cursorContext());
    }

    @Override
    protected long entityReference(RelationshipTypeIndexCursor cursor) {
        return cursor.relationshipReference();
    }

    @Override
    protected void tokenScan(IndexOrder indexOrder, KernelTransaction tx, int label, RelationshipTypeIndexCursor cursor)
            throws KernelException {
        IndexDescriptor index = tx.schemaRead()
                .index(SchemaDescriptors.forAnyEntityTokens(EntityType.RELATIONSHIP))
                .next();
        TokenReadSession tokenReadSession = tx.dataRead().tokenReadSession(index);
        tx.dataRead()
                .relationshipTypeScan(
                        tokenReadSession,
                        cursor,
                        IndexQueryConstraints.ordered(indexOrder),
                        new TokenPredicate(label),
                        tx.cursorContext());
    }

    @Override
    protected int tokenByName(KernelTransaction tx, String name) {
        return tx.tokenRead().relationshipType(name);
    }
}
