+
−/*
+
− * This Source Code Form is subject to the terms of the Mozilla Public
+
− * License, v. 2.0.  If a copy of the MPL was not distributed with this
+
− * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
− *
+
− * Copyright 2016 MonetDB B.V.
+
− */
+
−
+
−package nl.cwi.monetdb.embedded;
+
−
+
−import java.io.Closeable;
+
−
+
−/**
+
− * The base class for a query result.
+
− *
+
− * @author <a href="mailto:pedro.ferreira@monetdbsolutions.com">Pedro Ferreira</a>
+
− */
+
−public abstract class AbstractStatementResult implements Closeable {
+
−
+
−    /**
+
−     * The corresponding connection of this result.
+
−     */
+
−    private final MonetDBEmbeddedConnection connection;
+
−
+
−    /**
+
−     * Pointer to the native result set.
+
−     * We need to keep it around for getting columns.
+
−     * The native result set is kept until the {@link super.close()} is called.
+
−     */
+
−    protected long resultPointer;
+
−
+
−    protected AbstractStatementResult(MonetDBEmbeddedConnection connection, long resultPointer) {
+
−        this.resultPointer = resultPointer;
+
−        this.connection = connection;
+
−    }
+
−
+
−    /**
+
−     * Get the corresponding connection to this statement result
+
−     *
+
−     * @return A MonetDBEmbeddedConnection instance
+
−     */
+
−    public MonetDBEmbeddedConnection getConnection() { return connection;}
+
−
+
−    /**
+
−     * Tells if the connection of this statement result has been closed or not
+
−     *
+
−     * @return A boolean indicating if the statement result has been cleaned or not
+
−     */
+
−    public boolean isStatementClosed() {
+
−        return this.resultPointer == 0;
+
−    }
+
−
+
−    /**
+
−     * Close the query data so no more new results can be retrieved
+
−     */
+
−    @Override
+
−    public void close() {
+
−        this.cleanupResult(this.resultPointer);
+
−        this.resultPointer = 0;
+
−        this.connection.removeQueryResult(this);
+
−    }
+
−
+
−    private native void cleanupResult(long resultPointer);
+
−}