jdk/src/java.sql.rowset/share/classes/javax/sql/rowset/RowSetWarning.java
author lancea
Tue, 21 Oct 2014 13:41:22 -0400
changeset 27183 5260f53ce305
parent 25991 e48157b42439
permissions -rw-r--r--
8059411: RowSetWarning does not chain warnings Reviewed-by: darcy, smarks, mchung
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/*
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 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package javax.sql.rowset;
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import java.sql.SQLException;
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/**
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 * An extension of <code>SQLException</code> that provides information
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 * about database warnings set on <code>RowSet</code> objects.
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 * Warnings are silently chained to the object whose method call
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 * caused it to be reported.
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 * This class complements the <code>SQLWarning</code> class.
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 * <P>
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 * Rowset warnings may be retrieved from <code>JdbcRowSet</code>,
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 * <code>CachedRowSet</code>&trade;,
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 * <code>WebRowSet</code>, <code>FilteredRowSet</code>, or <code>JoinRowSet</code>
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 * implementations. To retrieve the first warning reported on any
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 * <code>RowSet</code>
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 * implementation,  use the method <code>getRowSetWarnings</code> defined
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 * in the <code>JdbcRowSet</code> interface or the <code>CachedRowSet</code>
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 * interface. To retrieve a warning chained to the first warning, use the
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 * <code>RowSetWarning</code> method
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 * <code>getNextWarning</code>. To retrieve subsequent warnings, call
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 * <code>getNextWarning</code> on each <code>RowSetWarning</code> object that is
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 * returned.
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 * <P>
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 * The inherited methods <code>getMessage</code>, <code>getSQLState</code>,
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 * and <code>getErrorCode</code> retrieve information contained in a
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 * <code>RowSetWarning</code> object.
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 *
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 * @since 1.5
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 */
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public class RowSetWarning extends SQLException {
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    /**
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     * Constructs a <code>RowSetWarning</code> object
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     * with the given value for the reason; SQLState defaults to null,
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     * and vendorCode defaults to 0.
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     *
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     * @param reason a <code>String</code> object giving a description
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     *        of the warning; if the <code>String</code> is <code>null</code>,
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     *        this constructor behaves like the default (zero parameter)
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     *        <code>RowSetWarning</code> constructor
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     */
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    public RowSetWarning(String reason) {
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        super(reason);
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    }
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    /**
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     * Constructs a default <code>RowSetWarning</code> object. The reason
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     * defaults to <code>null</code>, SQLState defaults to null and vendorCode
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     * defaults to 0.
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     */
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    public RowSetWarning() {
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        super();
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    }
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    /**
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     * Constructs a <code>RowSetWarning</code> object initialized with the
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     * given values for the reason and SQLState. The vendor code defaults to 0.
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     *
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     * If the <code>reason</code> or <code>SQLState</code> parameters are <code>null</code>,
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     * this constructor behaves like the default (zero parameter)
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     * <code>RowSetWarning</code> constructor.
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     *
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     * @param reason a <code>String</code> giving a description of the
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     *        warning;
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     * @param SQLState an XOPEN code identifying the warning; if a non standard
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     *        XOPEN <i>SQLState</i> is supplied, no exception is thrown.
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     */
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    public RowSetWarning(java.lang.String reason, java.lang.String SQLState) {
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        super(reason, SQLState);
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    }
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    /**
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     * Constructs a fully specified <code>RowSetWarning</code> object initialized
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     * with the given values for the reason, SQLState and vendorCode.
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     *
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     * If the <code>reason</code>, or the  <code>SQLState</code>
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     * parameters are <code>null</code>, this constructor behaves like the default
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     * (zero parameter) <code>RowSetWarning</code> constructor.
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     *
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     * @param reason a <code>String</code> giving a description of the
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     *        warning;
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     * @param SQLState an XOPEN code identifying the warning; if a non standard
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     *        XOPEN <i>SQLState</i> is supplied, no exception is thrown.
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     * @param vendorCode a database vendor-specific warning code
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     */
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    public RowSetWarning(java.lang.String reason, java.lang.String SQLState, int vendorCode) {
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        super(reason, SQLState, vendorCode);
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    }
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    /**
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     * Retrieves the warning chained to this <code>RowSetWarning</code>
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     * object.
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     *
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     * @return the <code>RowSetWarning</code> object chained to this one; if no
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     *         <code>RowSetWarning</code> object is chained to this one,
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     *         <code>null</code> is returned (default value)
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     * @see #setNextWarning
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     */
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    public RowSetWarning getNextWarning() {
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        SQLException warning = getNextException();
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        if (  warning == null || warning instanceof RowSetWarning) {
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            return (RowSetWarning)warning;
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        } else {
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            // The chained value isn't a RowSetWarning.
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            // This is a programming error by whoever added it to
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            // the RowSetWarning chain.  We throw a Java "Error".
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            throw new Error("RowSetWarning chain holds value that is not a RowSetWarning: ");
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        }
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    }
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    /**
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     * Sets <i>warning</i> as the next warning, that is, the warning chained
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     * to this <code>RowSetWarning</code> object.
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     *
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     * @param warning the <code>RowSetWarning</code> object to be set as the
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     *     next warning; if the <code>RowSetWarning</code> is null, this
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     *     represents the finish point in the warning chain
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     * @see #getNextWarning
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     */
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    public void setNextWarning(RowSetWarning warning) {
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        setNextException(warning);
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    }
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    static final long serialVersionUID = 6678332766434564774L;
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}