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From "Myrna van Lunteren (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (DERBY-2112) Nullpointer on executeBatchRequestX when preparedStatement has no parameters
Date Sat, 10 Feb 2007 14:47:07 GMT

     [ https://issues.apache.org/jira/browse/DERBY-2112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Myrna van Lunteren reassigned DERBY-2112:
-----------------------------------------

    Assignee: Myrna van Lunteren

> Nullpointer on executeBatchRequestX when preparedStatement has no parameters
> ----------------------------------------------------------------------------
>
>                 Key: DERBY-2112
>                 URL: https://issues.apache.org/jira/browse/DERBY-2112
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Client
>    Affects Versions: 10.2.1.6
>         Environment: Using java version 1.5.0_05 (sun). 
>            Reporter: Cesar Devera
>         Assigned To: Myrna van Lunteren
>         Attachments: DERBY-2112_20070209.diff, Derby2112ReproNPE.java
>
>
> there is a problem when using batch statements without bind parameters (?), with ClientDriver
(derbyclient.jar):
> java.lang.NullPointerException
> 	at org.apache.derby.client.am.PreparedStatement.executeBatchRequestX(Unknown Source)
> 	at org.apache.derby.client.am.PreparedStatement.executeBatchX(Unknown Source)
> 	at org.apache.derby.client.am.PreparedStatement.executeBatch(Unknown Source)
> 	at teste.Teste9.main(Teste9.java:29)
> test process to reproduce the bug:
> create a database called mydbtest under $DERBY_HOME/data
> create and populate a new table called teste1:
> create table teste1 ( valor numeric );
> insert into teste1 values (1);
> insert into teste1 values (2);
> insert into teste1 values (3);
> start derby network server.
> run the following code:
> 	public static void main(String[] args) throws SQLException {
> 		
> 	    try {
> 	        Class.forName("org.apache.derby.jdbc.ClientDriver" );
> 	    } catch (Exception e) {
> 	        e.printStackTrace();
> 	        return;
> 	    }
> 	    Connection c = DriverManager.getConnection("jdbc:derby://localhost:1527/d:/derby_10/data/mydbtest",
"app", "app");
> 	    
> 	    PreparedStatement ps = c.prepareStatement("update teste1 set valor = 8");
> 	    ps2.addBatch();
> 	    
> 	    int j[] = ps.executeBatch();
> 	    System.out.println(j[0]);
> 	    ps.close();
> 	    
> 	    c.close();
> 	}
> this exception is thrown:
> java.lang.NullPointerException
> 	at org.apache.derby.client.am.PreparedStatement.executeBatchRequestX(Unknown Source)
> 	at org.apache.derby.client.am.PreparedStatement.executeBatchX(Unknown Source)
> 	at org.apache.derby.client.am.PreparedStatement.executeBatch(Unknown Source)
> 	at teste.Teste9.main(Teste9.java:29)
> ------
> i've studied the source and got the bug on class org.apache.derby.client.am.PreparedStatement
line 2043.
> then, i've changed that line from this:
> 			parameterMetaData_.clientParamtertype_ = (int[]) parameterTypeList.get(i);
> to this:
> 			if (parameterMetaData_ != null) {
> 				parameterMetaData_.clientParamtertype_ = (int[]) parameterTypeList.get(i);
> 			}
> after running the build and updating the derbyclient.jar, my application worked fine,
so this seems to solve the problem.
> i didn't run the automatic build tests to check for other impacts / collateral effects.
> follows org.apache.derby.tools.sysinfo output:
> ------------------ Informacoes sobre Java ------------------
> Vers?o do Java:                     1.4.2_08
> Fornecedor do Java:                 Sun Microsystems Inc.
> Diret?rio base do Java:             C:\j2sdk1.4.2_08\jre
> Caminho de classes do Java:         .;.;C:\PROGRA~1\JMF21~1.1E\lib\sound.jar;C:\PROGRA~1\JMF21~1.1E\lib\jmf.jar;C:\PROGRA~1\J
> MF21~1.1E\lib;%systemroot%\java\classes;.;D:\DERBY_10/lib/derby.jar;D:\DERBY_10/lib/derbynet.jar;D:\DERBY_10/lib/derbyclient.
> jar;D:\DERBY_10/lib/derbytools.jar
> Nome do Sistema Operacional:        Windows XP
> Arquitetura do Sistema Operacional: x86
> Vers?o do Sistema Operacional:      5.1
> Nome do usußrio Java:               acd025
> Diret?rio base do usußrio Java:     D:\Profiles\acd025
> Diret?rio do usußrio Java:          D:\derby_10
> java.specification.name: Java Platform API Specification
> java.specification.version: 1.4
> ---------------- Informa??es sobre o Derby -----------------
> JRE - JDBC: J2SE 1.4.2 - JDBC 3.0
> [D:\derby_10\lib\derby.jar] 10.2.1.6 - (452058)
> [D:\derby_10\lib\derbytools.jar] 10.2.1.6 - (452058)
> [D:\derby_10\lib\derbynet.jar] 10.2.1.6 - (452058)
> [D:\derby_10\lib\derbyclient.jar] 10.2.1.6 - (452058)
> ------------------------------------------------------
> ---------------- Informa??es sobre o Idioma ----------------
> Idioma atual :  [portugu?s/Brasil [pt_BR]]
> Encontrado suporte para o idioma: [de_DE]
>          vers?o: 10.2.1.6 - (452058)
> Encontrado suporte para o idioma: [es]
>          vers?o: 10.2.1.6 - (452058)
> Encontrado suporte para o idioma: [fr]
>          vers?o: 10.2.1.6 - (452058)
> Encontrado suporte para o idioma: [it]
>          vers?o: 10.2.1.6 - (452058)
> Encontrado suporte para o idioma: [ja_JP]
>          vers?o: 10.2.1.6 - (452058)
> Encontrado suporte para o idioma: [ko_KR]
>          vers?o: 10.2.1.6 - (452058)
> Encontrado suporte para o idioma: [pt_BR]
>          vers?o: 10.2.1.6 - (452058)
> Encontrado suporte para o idioma: [zh_CN]
>          vers?o: 10.2.1.6 - (452058)
> Encontrado suporte para o idioma: [zh_TW]
>          vers?o: 10.2.1.6 - (452058)
> ------------------------------------------------------

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