Method close

subprojects/groovy-sql/src/main/java/groovy/sql/Sql.java:3907–3919

If this SQL object was created with a Connection then this method closes the connection. If this SQL object was created from a DataSource then this method only frees any cached objects (statements in particular).

()

     * this method only frees any cached objects (statements in particular).
     */
    @Override
    public void close() {
        namedParamSqlCache.clear();
        namedParamIndexPropCache.clear();
        clearStatementCache();
        if (useConnection != null) {
            try {
                useConnection.close();
            } catch (SQLException e) {
                LOG.finest("Caught exception closing connection: " + e.getMessage());
            }
        }
    }

    /**
     * Returns the {@link DataSource} backing this instance.