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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/com/sun/rowset/internal/InsertRow.java (1 of 18352 files). Show all

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java/pkg/com/sun/rowset/internal/InsertRow.java+179−0
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1+/*
2+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package com.sun.rowset.internal;
27+
28+import com.sun.rowset.JdbcRowSetResourceBundle;
29+import java.sql.*;
30+import javax.sql.*;
31+import java.io.*;
32+import java.util.*;
33+
34+/**
35+ * A class used internally to manage a <code>CachedRowSet</code> object's
36+ * insert row. This class keeps track of the number of columns in the
37+ * insert row and which columns have had a value inserted. It provides
38+ * methods for retrieving a column value, setting a column value, and finding
39+ * out whether the insert row is complete.
40+ */
41+public class InsertRow extends BaseRow implements Serializable, Cloneable {
42+
43+/**
44+ * An internal <code>BitSet</code> object used to keep track of the
45+ * columns in this <code>InsertRow</code> object that have had a value
46+ * inserted.
47+ */
48+ private BitSet colsInserted;
49+
50+/**
51+ * The number of columns in this <code>InsertRow</code> object.
52+ */
53+ private int cols;
54+
55+ private JdbcRowSetResourceBundle resBundle;
56+
57+/**
58+ * Creates an <code>InsertRow</code> object initialized with the
59+ * given number of columns, an array for keeping track of the
60+ * original values in this insert row, and a
61+ * <code>BitSet</code> object with the same number of bits as
62+ * there are columns.
63+ *
64+ * @param numCols an <code>int</code> indicating the number of columns
65+ * in this <code>InsertRow</code> object
66+ */
67+ public InsertRow(int numCols) {
68+ origVals = new Object[numCols];
69+ colsInserted = new BitSet(numCols);
70+ cols = numCols;
71+ try {
72+ resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
73+ } catch(IOException ioe) {
74+ throw new RuntimeException(ioe);
75+ }
76+ }
77+
78+/**
79+ * Sets the bit in this <code>InsertRow</code> object's internal
80+ * <code>BitSet</code> object that corresponds to the specified column
81+ * in this <code>InsertRow</code> object. Setting a bit indicates
82+ * that a value has been set.
83+ *
84+ * @param col the number of the column to be marked as inserted;
85+ * the first column is <code>1</code>
86+ */
87+ protected void markColInserted(int col) {
88+ colsInserted.set(col);
89+ }
90+
91+/**
92+ * Indicates whether this <code>InsertRow</code> object has a value
93+ * for every column that cannot be null.
94+ * @param RowSetMD the <code>RowSetMetaData</code> object for the
95+ * <code>CachedRowSet</code> object that maintains this
96+ * <code>InsertRow</code> object
97+ * @return <code>true</code> if this <code>InsertRow</code> object is
98+ * complete; <code>false</code> otherwise
99+ * @throws SQLException if there is an error accessing data
100+ */
101+ public boolean isCompleteRow(RowSetMetaData RowSetMD) throws SQLException {
102+ for (int i = 0; i < cols; i++) {
103+ if (colsInserted.get(i) == false &&
104+ RowSetMD.isNullable(i + 1) ==
105+ ResultSetMetaData.columnNoNulls) {
106+ return false;
107+ }
108+
109+ }
110+ return true;
111+ }
112+
113+/**
114+ * Clears all the bits in the internal <code>BitSet</code> object
115+ * maintained by this <code>InsertRow</code> object. Clearing all the bits
116+ * indicates that none of the columns have had a value inserted.
117+ */
118+ public void initInsertRow() {
119+ for (int i = 0; i < cols; i++) {
120+ colsInserted.clear(i);
121+ }
122+ }
123+
124+/**
125+ * Retrieves the value of the designated column in this
126+ * <code>InsertRow</code> object. If no value has been inserted
127+ * into the designated column, this method throws an
128+ * <code>SQLException</code>.
129+ *
130+ * @param idx the column number of the value to be retrieved;
131+ * the first column is <code>1</code>
132+ * @throws SQLException if no value has been inserted into
133+ * the designated column
134+ */
135+ public Object getColumnObject(int idx) throws SQLException {
136+ if (colsInserted.get(idx - 1) == false) {
137+ throw new SQLException(resBundle.handleGetObject("insertrow.novalue").toString());
138+ }
139+ return (origVals[idx - 1]);
140+ }
141+
142+/**
143+ * Sets the element in this <code>InsertRow</code> object's
144+ * internal array of original values that corresponds to the
145+ * designated column with the given value. If the third
146+ * argument is <code>true</code>,
147+ * which means that the cursor is on the insert row, this
148+ * <code>InsertRow</code> object's internal <code>BitSet</code> object
149+ * is set so that the bit corresponding to the column being set is
150+ * turned on.
151+ *
152+ * @param idx the number of the column in the insert row to be set;
153+ * the first column is <code>1</code>
154+ * @param val the value to be set
155+ */
156+ public void setColumnObject(int idx, Object val) {
157+ origVals[idx - 1] = val;
158+ markColInserted(idx - 1);
159+ }
160+
161+ /**
162+ * This method re populates the resBundle
163+ * during the deserialization process
164+ *
165+ */
166+ private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
167+ // Default state initialization happens here
168+ ois.defaultReadObject();
169+ // Initialization of transient Res Bundle happens here .
170+ try {
171+ resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
172+ } catch(IOException ioe) {
173+ throw new RuntimeException(ioe);
174+ }
175+
176+ }
177+
178+ static final long serialVersionUID = 1066099658102869344L;
179+}