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Fixed bug reported by Marko Strukelj and Keith Wannamaker. Using executeBatch

Browse Source 
on a preparedStatement would reset the prepared statment causing subsequent
uses of the preparedStatement to fail (i.e. the following series of calls
would fail: addBatch() executeBatch() addBatch() executBatch()).  This is
a regression from 7.2 where this worked correctly.  The regression test has
also been modified to explicitly test for this case.

 Modified Files:
 	jdbc/org/postgresql/jdbc1/AbstractJdbc1Statement.java
 	jdbc/org/postgresql/jdbc2/AbstractJdbc2Statement.java
 	jdbc/org/postgresql/test/jdbc2/BatchExecuteTest.java
This commit is contained in:
Barry Lind 2002-11-20 07:34:32 +00:00
parent b60be3f2f8
commit 54bc3b6b8b
3 changed files with 49 additions and 9 deletions
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4
src/interfaces/jdbc/org/postgresql/jdbc1/AbstractJdbc1Statement.java
View File

@ -8,7 +8,7 @@ import java.util.Vector;
import org.postgresql.largeobject.*;
import org.postgresql.util.*;
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/AbstractJdbc1Statement.java,v 1.13 2002/11/14 05:35:45 barry Exp $
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/AbstractJdbc1Statement.java,v 1.14 2002/11/20 07:34:32 barry Exp $
* This class defines methods of the jdbc1 specification. This class is
* extended by org.postgresql.jdbc2.AbstractJdbc2Statement which adds the jdbc2
* methods. The real Statement class (for jdbc1) is org.postgresql.jdbc1.Jdbc1Statement
@ -47,7 +47,7 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme
private String[] m_origSqlFragments;
private String[] m_executeSqlFragments;
protected Object[] m_binds = new Object[0];
private String[] m_bindTypes = new String[0];
protected String[] m_bindTypes = new String[0];
private String m_statementName = null;
private boolean m_useServerPrepare = false;
private static int m_preparedCount = 1;

42
src/interfaces/jdbc/org/postgresql/jdbc2/AbstractJdbc2Statement.java
View File

@ -8,7 +8,7 @@ import java.util.Vector;
import org.postgresql.largeobject.*;
import org.postgresql.util.PSQLException;
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/Attic/AbstractJdbc2Statement.java,v 1.8 2002/10/30 04:33:29 barry Exp $
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/Attic/AbstractJdbc2Statement.java,v 1.9 2002/11/20 07:34:32 barry Exp $
* This class defines methods of the jdbc2 specification. This class extends
* org.postgresql.jdbc1.AbstractJdbc1Statement which provides the jdbc1
* methods. The real Statement class (for jdbc2) is org.postgresql.jdbc2.Jdbc2Statement
@ -59,7 +59,8 @@ public abstract class AbstractJdbc2Statement extends org.postgresql.jdbc1.Abstra
{
if (batch == null)
batch = new Vector();
batch.addElement(p_sql);
Object[] l_statement = new Object[] {new String[] {p_sql}, new Object[0], new String[0]};
batch.addElement(l_statement);
}
public void clearBatch() throws SQLException
@ -76,8 +77,25 @@ public abstract class AbstractJdbc2Statement extends org.postgresql.jdbc1.Abstra
int i = 0;
try
{
for (i = 0;i < size;i++)
result[i] = this.executeUpdate((String)batch.elementAt(i));
//copy current state of statement
String[] l_origSqlFragments = m_sqlFragments;
Object[] l_origBinds = m_binds;
String[] l_origBindTypes = m_bindTypes;
for (i = 0;i < size;i++) {
//set state from batch
Object[] l_statement = (Object[])batch.elementAt(i);
this.m_sqlFragments = (String[])l_statement[0];
this.m_binds = (Object[])l_statement[1];
this.m_bindTypes = (String[])l_statement[2];
result[i] = this.executeUpdate();
}
//restore state of statement
String[] m_sqlFragments = l_origSqlFragments;
Object[] m_binds = l_origBinds;
String[] m_bindTypes = l_origBindTypes;
}
catch (SQLException e)
{
@ -150,7 +168,21 @@ public abstract class AbstractJdbc2Statement extends org.postgresql.jdbc1.Abstra
public void addBatch() throws SQLException
{
addBatch(this.toString());
if (batch == null)
batch = new Vector();
//we need to create copies, otherwise the values can be changed
Object[] l_newSqlFragments = null;
if (m_sqlFragments != null) {
l_newSqlFragments = new String[m_sqlFragments.length];
System.arraycopy(m_sqlFragments,0,l_newSqlFragments,0,m_sqlFragments.length);
}
Object[] l_newBinds = new String[m_binds.length];
System.arraycopy(m_binds,0,l_newBinds,0,m_binds.length);
String[] l_newBindTypes = new String[m_bindTypes.length];
System.arraycopy(m_bindTypes,0,l_newBindTypes,0,m_bindTypes.length);
Object[] l_statement = new Object[] {l_newSqlFragments, l_newBinds, l_newBindTypes};
batch.addElement(l_statement);
}
public java.sql.ResultSetMetaData getMetaData() throws SQLException

12
src/interfaces/jdbc/org/postgresql/test/jdbc2/BatchExecuteTest.java
View File

@ -157,11 +157,19 @@ public class BatchExecuteTest extends TestCase
pstmt.executeBatch();
assertCol1HasValue(7);
con.commit();
//now test to see that we can still use the statement after the execute
pstmt.setInt(1, 3);
pstmt.addBatch();
assertCol1HasValue(7);
pstmt.executeBatch();
assertCol1HasValue(10);
con.commit();
assertCol1HasValue(10);
con.rollback();
assertCol1HasValue(7);
assertCol1HasValue(10);
pstmt.close();
}