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Code

cancel row updates sets values to null by Kris Jurka

Browse Source
This commit is contained in:
Dave Cramer 2003-12-12 18:34:14 +00:00
parent 06ec9044b5
commit 605c1e6df0
2 changed files with 74 additions and 17 deletions
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15
src/interfaces/jdbc/org/postgresql/jdbc2/AbstractJdbc2ResultSet.java
View File

@ -9,7 +9,7 @@
* Copyright (c) 2003, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/AbstractJdbc2ResultSet.java,v 1.27 2003/11/29 19:52:10 pgsql Exp $
* $PostgreSQL: pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/AbstractJdbc2ResultSet.java,v 1.28 2003/12/12 18:34:14 davec Exp $
*
*-------------------------------------------------------------------------
*/
@ -519,7 +519,7 @@ public abstract class AbstractJdbc2ResultSet extends org.postgresql.jdbc1.Abstra
{
doingUpdates = false;
clearRowBuffer();
clearRowBuffer(true);
}
}
@ -662,7 +662,7 @@ public abstract class AbstractJdbc2ResultSet extends org.postgresql.jdbc1.Abstra
this_row = rowBuffer;
// need to clear this in case of another insert
clearRowBuffer();
clearRowBuffer(false);
}
@ -707,7 +707,7 @@ public abstract class AbstractJdbc2ResultSet extends org.postgresql.jdbc1.Abstra
// make sure the underlying data is null
clearRowBuffer();
clearRowBuffer(false);
onInsertRow = true;
doingUpdates = false;
@ -715,12 +715,17 @@ public abstract class AbstractJdbc2ResultSet extends org.postgresql.jdbc1.Abstra
}
private synchronized void clearRowBuffer()
private synchronized void clearRowBuffer(boolean copyCurrentRow)
throws SQLException
{
// rowBuffer is the temporary storage for the row
rowBuffer = new byte[fields.length][];
// inserts want an empty array while updates want a copy of the current row
if (copyCurrentRow) {
System.arraycopy(this_row, 0, rowBuffer, 0, this_row.length);
}
// clear the updateValues hashTable for the next set of updates
updateValues.clear();

76
src/interfaces/jdbc/org/postgresql/test/jdbc2/UpdateableResultTest.java
View File

@ -15,25 +15,79 @@ import org.postgresql.test.TestUtil;
public class UpdateableResultTest extends TestCase
{
private Connection con;
public UpdateableResultTest( String name )
{
super( name );
}
protected void setUp() throws Exception
{
con = TestUtil.openDB();
TestUtil.createTable(con, "updateable", "id int primary key, name text, notselected text");
TestUtil.createTable(con, "second", "id1 int primary key, name1 text");
// put some dummy data into second
Statement st2 = con.createStatement();
st2.execute( "insert into second values (1,'anyvalue' )");
st2.close();
}
protected void tearDown() throws Exception
{
TestUtil.dropTable(con, "updateable");
TestUtil.dropTable(con, "second");
TestUtil.closeDB(con);
}
public void testCancelRowUpdates() throws Exception
{
Statement st = con.createStatement( ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE );
ResultSet rs = st.executeQuery( "select * from second");
// make sure we're dealing with the correct row.
rs.first();
assertEquals(1,rs.getInt(1));
assertEquals("anyvalue",rs.getString(2));
// update, cancel and make sure nothings changed.
rs.updateInt(1,99);
rs.cancelRowUpdates();
assertEquals(1,rs.getInt(1));
assertEquals("anyvalue",rs.getString(2));
// real update
rs.updateInt(1,999);
rs.updateRow();
assertEquals(999,rs.getInt(1));
assertEquals("anyvalue",rs.getString(2));
// scroll some and make sure the update is still there
rs.beforeFirst();
rs.next();
assertEquals(999,rs.getInt(1));
assertEquals("anyvalue",rs.getString(2));
// make sure the update got to the db and the driver isn't lying to us.
rs.close();
rs = st.executeQuery( "select * from second");
rs.first();
assertEquals(999,rs.getInt(1));
assertEquals("anyvalue",rs.getString(2));
rs.close();
st.close();
}
public void testUpdateable()
{
try
{
Connection con = TestUtil.openDB();
TestUtil.createTable(con, "updateable", "id int primary key, name text, notselected text");
TestUtil.createTable(con, "second", "id1 int primary key, name1 text");
// put some dummy data into second
Statement st2 = con.createStatement();
st2.execute( "insert into second values (1,'anyvalue' )");
st2.close();
Statement st = con.createStatement( ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE );
ResultSet rs = st.executeQuery( "select * from updateable");
assertNotNull( rs );
@ -123,12 +177,10 @@ public class UpdateableResultTest extends TestCase
st.close();
TestUtil.dropTable( con, "updateable" );
TestUtil.dropTable( con, "second" );
TestUtil.closeDB( con );
}
catch (Exception ex)
{
ex.printStackTrace();
fail(ex.getMessage());
}
}