| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.rowset.internal; |
| |
| import com.sun.rowset.JdbcRowSetResourceBundle; |
| import java.sql.*; |
| import javax.sql.*; |
| import java.io.*; |
| import java.util.*; |
| |
| /** |
| * A class used internally to manage a <code>CachedRowSet</code> object's |
| * insert row. This class keeps track of the number of columns in the |
| * insert row and which columns have had a value inserted. It provides |
| * methods for retrieving a column value, setting a column value, and finding |
| * out whether the insert row is complete. |
| */ |
| public class InsertRow extends BaseRow implements Serializable, Cloneable { |
| |
| /** |
| * An internal <code>BitSet</code> object used to keep track of the |
| * columns in this <code>InsertRow</code> object that have had a value |
| * inserted. |
| */ |
| private BitSet colsInserted; |
| |
| /** |
| * The number of columns in this <code>InsertRow</code> object. |
| */ |
| private int cols; |
| |
| private JdbcRowSetResourceBundle resBundle; |
| |
| /** |
| * Creates an <code>InsertRow</code> object initialized with the |
| * given number of columns, an array for keeping track of the |
| * original values in this insert row, and a |
| * <code>BitSet</code> object with the same number of bits as |
| * there are columns. |
| * |
| * @param numCols an <code>int</code> indicating the number of columns |
| * in this <code>InsertRow</code> object |
| */ |
| public InsertRow(int numCols) { |
| origVals = new Object[numCols]; |
| colsInserted = new BitSet(numCols); |
| cols = numCols; |
| try { |
| resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle(); |
| } catch(IOException ioe) { |
| throw new RuntimeException(ioe); |
| } |
| } |
| |
| /** |
| * Sets the bit in this <code>InsertRow</code> object's internal |
| * <code>BitSet</code> object that corresponds to the specified column |
| * in this <code>InsertRow</code> object. Setting a bit indicates |
| * that a value has been set. |
| * |
| * @param col the number of the column to be marked as inserted; |
| * the first column is <code>1</code> |
| */ |
| protected void markColInserted(int col) { |
| colsInserted.set(col); |
| } |
| |
| /** |
| * Indicates whether this <code>InsertRow</code> object has a value |
| * for every column that cannot be null. |
| * @param RowSetMD the <code>RowSetMetaData</code> object for the |
| * <code>CachedRowSet</code> object that maintains this |
| * <code>InsertRow</code> object |
| * @return <code>true</code> if this <code>InsertRow</code> object is |
| * complete; <code>false</code> otherwise |
| * @throws SQLException if there is an error accessing data |
| */ |
| public boolean isCompleteRow(RowSetMetaData RowSetMD) throws SQLException { |
| for (int i = 0; i < cols; i++) { |
| if (colsInserted.get(i) == false && |
| RowSetMD.isNullable(i + 1) == |
| ResultSetMetaData.columnNoNulls) { |
| return false; |
| } |
| |
| } |
| return true; |
| } |
| |
| /** |
| * Clears all the bits in the internal <code>BitSet</code> object |
| * maintained by this <code>InsertRow</code> object. Clearing all the bits |
| * indicates that none of the columns have had a value inserted. |
| */ |
| public void initInsertRow() { |
| for (int i = 0; i < cols; i++) { |
| colsInserted.clear(i); |
| } |
| } |
| |
| /** |
| * Retrieves the value of the designated column in this |
| * <code>InsertRow</code> object. If no value has been inserted |
| * into the designated column, this method throws an |
| * <code>SQLException</code>. |
| * |
| * @param idx the column number of the value to be retrieved; |
| * the first column is <code>1</code> |
| * @throws SQLException if no value has been inserted into |
| * the designated column |
| */ |
| public Object getColumnObject(int idx) throws SQLException { |
| if (colsInserted.get(idx - 1) == false) { |
| throw new SQLException(resBundle.handleGetObject("insertrow.novalue").toString()); |
| } |
| return (origVals[idx - 1]); |
| } |
| |
| /** |
| * Sets the element in this <code>InsertRow</code> object's |
| * internal array of original values that corresponds to the |
| * designated column with the given value. If the third |
| * argument is <code>true</code>, |
| * which means that the cursor is on the insert row, this |
| * <code>InsertRow</code> object's internal <code>BitSet</code> object |
| * is set so that the bit corresponding to the column being set is |
| * turned on. |
| * |
| * @param idx the number of the column in the insert row to be set; |
| * the first column is <code>1</code> |
| * @param val the value to be set |
| */ |
| public void setColumnObject(int idx, Object val) { |
| origVals[idx - 1] = val; |
| markColInserted(idx - 1); |
| } |
| |
| /** |
| * This method re populates the resBundle |
| * during the deserialization process |
| * |
| */ |
| private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException { |
| // Default state initialization happens here |
| ois.defaultReadObject(); |
| // Initialization of transient Res Bundle happens here . |
| try { |
| resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle(); |
| } catch(IOException ioe) { |
| throw new RuntimeException(ioe); |
| } |
| |
| } |
| |
| static final long serialVersionUID = 1066099658102869344L; |
| } |