/*
 * 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.internal.recordstorage;

import java.io.IOException;
import org.neo4j.storageengine.api.StorageCommand;

/**
 * Wraps several {@link TransactionApplier}s. In this case, each individual visit-call will delegate to {@link
 * #visit(StorageCommand)} instead, which will call each wrapped {@link TransactionApplier} in turn. In
 * {@link #close()},
 * the appliers are closed in reversed order.
 */
public class TransactionApplierFacade implements TransactionApplier {
    final TransactionApplier[] appliers;

    TransactionApplierFacade(TransactionApplier... appliers) {
        this.appliers = appliers;
    }

    @Override
    public void close() throws Exception {
        for (int i = appliers.length - 1; i >= 0; i--) {
            appliers[i].close();
        }
    }

    @Override
    public boolean visit(StorageCommand element) throws IOException {
        for (TransactionApplier applier : appliers) {
            if (((Command) element).handle(applier)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean visitNodeCommand(Command.NodeCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitRelationshipCommand(Command.RelationshipCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitPropertyCommand(Command.PropertyCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitRelationshipGroupCommand(Command.RelationshipGroupCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitRelationshipTypeTokenCommand(Command.RelationshipTypeTokenCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitLabelTokenCommand(Command.LabelTokenCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitPropertyKeyTokenCommand(Command.PropertyKeyTokenCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitSchemaRuleCommand(Command.SchemaRuleCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitNodeCountsCommand(Command.NodeCountsCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitRelationshipCountsCommand(Command.RelationshipCountsCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitMetaDataCommand(Command.MetaDataCommand command) throws IOException {
        return visit(command);
    }

    @Override
    public boolean visitGroupDegreeCommand(Command.GroupDegreeCommand command) throws IOException {
        return visit(command);
    }
}
