src/java.sql.rowset/share/classes/com/sun/rowset/internal/InsertRow.java
changeset 47216 71c04702a3d5
parent 25859 3317bb8137f4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.sql.rowset/share/classes/com/sun/rowset/internal/InsertRow.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,179 @@
+/*
+ * 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;
+}