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Access to the Neo4j graph database through Java

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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [https://neo4j.com]
 *
 * 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.
 */
package org.neo4j.driver.internal.cluster;

import java.util.List;
import org.neo4j.driver.Query;
import org.neo4j.driver.Record;

public class RoutingProcedureResponse {
    private final Query procedure;
    private final List records;
    private final Throwable error;

    public RoutingProcedureResponse(Query procedure, List records) {
        this(procedure, records, null);
    }

    public RoutingProcedureResponse(Query procedure, Throwable error) {
        this(procedure, null, error);
    }

    private RoutingProcedureResponse(Query procedure, List records, Throwable error) {
        this.procedure = procedure;
        this.records = records;
        this.error = error;
    }

    public boolean isSuccess() {
        return records != null;
    }

    public Query procedure() {
        return procedure;
    }

    public List records() {
        if (!isSuccess()) {
            throw new IllegalStateException("Can't access records of a failed result", error);
        }
        return records;
    }

    public Throwable error() {
        if (isSuccess()) {
            throw new IllegalStateException("Can't access error of a succeeded result " + records);
        }
        return error;
    }
}