Jonathan Lalou's Blog

Archive for the ‘en-US’ Category

Case

You need include tools.jar as a dependency in a pom.xml, for instance in order to use Java 5’s annotations and APT. From a “Maven’s view point”, tools.jar is not a regular JAR defined by a groupId and artefactId.

Solution

Add this block in your pom.xml:

[xml]<dependency>
<groupId>com.sun</groupId>
<artifactId>tools</artifactId>
<version>1.6.0_24</version>
<scope>system</scope>
<systemPath>${java.home}/../lib/tools.jar</systemPath>
</dependency>[/xml]

(You can also add it in your settings.xml)

You can do the same for any other “non-regular” JAR, available in your file system.

Case

In a JDBC DAO, I execute a query to retrieve an object. I get this error:

[java]java.sql.SQLException: Wrong data type: NUMBER in statement [CREATE TABLE Jonathan_Table (TableColumn NUMBER][/java]

Stacktrace

[java]java.sql.SQLException: Wrong data type: NUMBER in statement [CREATE TABLE Jonathan_Table (TableColumn NUMBER]
at org.hsqldb.jdbc.Util.throwError(Unknown Source)
at org.hsqldb.jdbc.jdbcPreparedStatement.executeUpdate(Unknown Source)
at com.bnpp.pb.risklayer.services.dao.jdbc.JdbcPrimeRiskServerDaoUnitTest.getDataSet(JdbcPrimeRiskServerDaoUnitTest.java:57)
at org.dbunit.DatabaseTestCase.setUp(DatabaseTestCase.java:154)[/java]

Explanation and fix

My original DB is under Oracle, but my DBUnit tests works on HSQL. Yet, types NUMBER and VARCHAR2 are not available under HSQL, this is why the exception is raised.
To fixe the issue, rewrite your scripts, replacing NUMBER and VARCHAR2 with NUMERIC and VARCHAR.

Case

On a unit test with JDBC / DBUnit, extending org.dbunit.DBTestCase, I get this error:

[java]Table ‘Jonathan_Lalou_Table’ not found in tableMap=org.dbunit.dataset.OrderedTableNameMap[_tableNames=[], _tableMap={}, _caseSensitiveTableNames=false][/java]

Explanation and fix

Indeed, even when you provide a dataset through a flat XML file, DBUnit does not create the tables, but only fills them in. I know, this is paradoxal and most developpers would like to create implicitly the tables prior to filling them…

To fix the issue, add a block like this one, for instance when overriding the method getDataSet():

[java]final PreparedStatement preparedStatement;
preparedStatement = getDatabaseTester().getConnection().getConnection().prepareStatement("CREATE TABLE Jonathan_Lalou_Table … ");
preparedStatement.executeUpdate();[/java]

I have to fix all critical “Violations” owing to Sonar.
Let’s consider a basic block:
[java] public void setSushis(float[] sushis) {
this.sushis = sushis;
}[/java]
This piece of code raises this error in Sonar:
[java] Security – Array is stored directly : The user-supplied array ‘sushis’ is stored directly.[/java]
In a naive step, I modified the code as this:
[java] public void setSushis(float[] sushis) {
this.sushis = sushis.clone();
}[/java]
This may have been OK… but, now, I get the following error within GWT compilation:
[java]Cannot invoke clone() on the array type float[][/java]

To fix the issue, I amended the code as follows:
[java] public void setSushis(float[] theSushis) {
this.sushis= new float[theSushis.length];
System.arraycopy(theSushis, 0, this.sushis, 0, theSushis.length);
}[/java]

Disclaimer: even though I followed Sonar’s advice and requirements, I am a little skeptic about this kind of “violation”. 😐

Case

Starting a WebLogic 9.2 instance, I got this message:

[java]Server subsystem failed. Reason: weblogic.security.SecurityInitializationException: Authentication for user weblogic denied[/java]

Anyway, I checked the admin login and passwords were OK, since I had never changed them.

Stacktrace

[java]<Mar 18, 2011 11:14:03 AM CET> <Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Reason: weblogic.security.SecurityInitializationException: Authentication for user weblogic denied
weblogic.security.SecurityInitializationException: Authentication for user weblogic denied
at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.doBootAuthorization(CommonSecurityServiceManagerDelegateImpl.java:947)
at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.initialize(CommonSecurityServiceManagerDelegateImpl.java:1029)
at weblogic.security.service.SecurityServiceManager.initialize(SecurityServiceManager.java:854)
at weblogic.security.SecurityService.start(SecurityService.java:141)
at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
[/java]

Fix

• Go to $DOMAIN_HOME/servers/admin/data/
• Rename ldap as ldap.OLD
• Restart WebLogic admin
• Then, a file $DOMAIN_HOME/servers/admin/security/boot.properties should appear and contain the encrypted login and passwords.The issue should be fixed.

Case

I introduced an Oracle Coherence cache withing my application, which is deployed as a WAR within WebLogic  Server. In a first step, I used an instance of Oracle Coherence / Coherence Web already built in WebLogic. Then, for a couple a reasons, I detroyed the Coherence cluster. Deploying the application, the following error appeared:

[java]java.lang.RuntimeException: Failed to start Service "Cluster" (ServiceState=SERVICE_STOPPED, STATE_ANNOUNCE)[/java]

Complete Stacktrace

[java]java.lang.RuntimeException: Failed to start Service "Cluster" (ServiceState=SERVICE_STOPPED, STATE_ANNOUNCE)
at com.tangosol.coherence.component.util.daemon.queueProcessor.Service.start(Service.CDB:38)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.start(Grid.CDB:38)
at com.tangosol.coherence.component.net.Cluster.onStart(Cluster.CDB:366)
at com.tangosol.coherence.component.net.Cluster.start(Cluster.CDB:11)
at com.tangosol.coherence.component.util.SafeCluster.startCluster(SafeCluster.CDB:3)[/java]

Explanation and Fix

The Coherence cluster view available in WebLogic server is a view of the Tangosol configuration, available in the files tangosol-coherence*.xml of Coherence’s JAR. To fix the issue, create a file tangosol-coherence-override.xml, in your classpath. Fill the file with a minimum content, such as:

[xml]<?xml version=’1.0′?>
<!DOCTYPE coherence SYSTEM "coherence.dtd">
<coherence>
<cluster-config>
<multicast-listener>
<time-to-live system-property="tangosol.coherence.ttl">0</time-to-live>
<join-timeout-milliseconds>3000</join-timeout-milliseconds>
</multicast-listener>
<unicast-listener>
<address>127.0.0.1</address>
<port>8088</port>
<port-auto-adjust>true</port-auto-adjust>
<priority>8</priority>
</unicast-listener>
<packet-publisher>
<packet-delivery>
<timeout-milliseconds>30000</timeout-milliseconds>
</packet-delivery>
</packet-publisher>
<service-guardian>
<timeout-milliseconds system-property="tangosol.coherence.guard.timeout">35000</timeout-milliseconds>
</service-guardian>
</cluster-config>
<logging-config>
<severity-level system-property="tangosol.coherence.log.level">5</severity-level>
<character-limit system-property="tangosol.coherence.log.limit">0</character-limit>
</logging-config>
</coherence>
[/xml]

Of course, you can amend and improve the file to match your requirements.
NB: in case your file is ignored by Coherence, override the property tangosol.coherence.override with value tangosol-coherence-override.xml.

Case

After my Java project upgrade from “Tiger” to “Mustang”, I tried to launch a “make module” within IntelliJ IDEA. I got this message

[java]javac: source release 1.6 requires target release 1.6[/java]

Fix

In IntelliJ IDEA, go to:
File > Settings > Compiler > Java Compiler > remove > Additional command line parameters > remove the parameter -target 1.5

Case

Following an upgrade from Java 5 “Tiger” to Java 6 “Mustang”, I tried to deploy a WAR with Maven-WebLogic plugin. I got this error:
[java]weblogic.deploy.api.tools.deployer.DeployerException: Unable to connect to ‘t3://localhost:7001’: invalid type code: 31. Ensure the url represents a running admin server and that the credentials are correct. If using http protocol, tunneling must be enabled on the admin server.
(…)
Caused by: javax.enterprise.deploy.spi.exceptions.DeploymentManagerCreationException
(…)
Caused by: weblogic.deploy.api.spi.exceptions.ServerConnectionException
(…)
Caused by: javax.naming.CommunicationException [Root exception is java.rmi.UnmarshalException: failed to unmarshal class weblogic.security.acl.internal.AuthenticatedUser; nested exception is:
java.io.StreamCorruptedException: invalid type code: 31]
(…)
Caused by: java.rmi.UnmarshalException: failed to unmarshal class weblogic.security.acl.internal.AuthenticatedUser; nested exception is:
java.io.StreamCorruptedException: invalid type code: 31
(…)
Caused by: java.io.StreamCorruptedException: invalid type code: 31
[/java]

Complete Stacktrace

[java]weblogic.deploy.api.tools.deployer.DeployerException: Unable to connect to ‘t3://localhost:7001’: invalid type code: 31. Ensure the url represents a running admin server and that the credentials are correct. If using http protocol, tunneling must be enabled on the admin server.
at weblogic.deploy.api.tools.deployer.Jsr88Operation.connect(Jsr88Operation.java:314)
at weblogic.deploy.api.tools.deployer.Deployer.perform(Deployer.java:137)
at weblogic.deploy.api.tools.deployer.Deployer.runBody(Deployer.java:88)
at weblogic.utils.compiler.Tool.run(Tool.java:158)
at weblogic.utils.compiler.Tool.run(Tool.java:115)
at weblogic.Deployer.run(Deployer.java:70)
at org.codehaus.mojo.weblogic.DeployMojoBase.executeDeployer(DeployMojoBase.java:510)
at org.codehaus.mojo.weblogic.DeployMojo.execute(DeployMojo.java:49)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:454)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:559)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:513)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:483)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:331)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:292)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:345)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:132)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:290)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: javax.enterprise.deploy.spi.exceptions.DeploymentManagerCreationException
at weblogic.deploy.api.spi.deploy.WebLogicDeploymentManagerImpl.<init>(WebLogicDeploymentManagerImpl.java:121)
at weblogic.deploy.api.spi.factories.internal.DeploymentFactoryImpl.getDeploymentManager(DeploymentFactoryImpl.java:84)
at weblogic.deploy.api.tools.SessionHelper.getRemoteDeploymentManager(SessionHelper.java:482)
at weblogic.deploy.api.tools.deployer.Jsr88Operation.connect(Jsr88Operation.java:295)
… 25 more
Caused by: weblogic.deploy.api.spi.exceptions.ServerConnectionException
at weblogic.deploy.api.spi.deploy.internal.ServerConnectionImpl.init(ServerConnectionImpl.java:143)
at weblogic.deploy.api.spi.deploy.WebLogicDeploymentManagerImpl.getNewConnection(WebLogicDeploymentManagerImpl.java:148)
at weblogic.deploy.api.spi.deploy.WebLogicDeploymentManagerImpl.<init>(WebLogicDeploymentManagerImpl.java:118)
… 28 more
Caused by: javax.naming.CommunicationException [Root exception is java.rmi.UnmarshalException: failed to unmarshal class weblogic.security.acl.internal.AuthenticatedUser; nested exception is:
java.io.StreamCorruptedException: invalid type code: 31]
at weblogic.jndi.internal.ExceptionTranslator.toNamingException(ExceptionTranslator.java:85)
at weblogic.jndi.internal.ExceptionTranslator.toNamingException(ExceptionTranslator.java:41)
at weblogic.jndi.WLInitialContextFactoryDelegate.toNamingException(WLInitialContextFactoryDelegate.java:765)
at weblogic.jndi.WLInitialContextFactoryDelegate.pushSubject(WLInitialContextFactoryDelegate.java:665)
at weblogic.jndi.WLInitialContextFactoryDelegate.newContext(WLInitialContextFactoryDelegate.java:465)
at weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialContextFactoryDelegate.java:372)
at weblogic.jndi.Environment.getContext(Environment.java:307)
at weblogic.jndi.Environment.getContext(Environment.java:277)
at weblogic.jndi.Environment.createInitialContext(Environment.java:200)
at weblogic.jndi.Environment.getInitialContext(Environment.java:184)
at weblogic.jndi.Environment.getInitialContext(Environment.java:162)
at weblogic.deploy.api.spi.deploy.internal.ServerConnectionImpl.getContext(ServerConnectionImpl.java:330)
at weblogic.deploy.api.spi.deploy.internal.ServerConnectionImpl.getEnvironment(ServerConnectionImpl.java:302)
at weblogic.deploy.api.spi.deploy.internal.ServerConnectionImpl.init(ServerConnectionImpl.java:141)
… 30 more
Caused by: java.rmi.UnmarshalException: failed to unmarshal class weblogic.security.acl.internal.AuthenticatedUser; nested exception is:
java.io.StreamCorruptedException: invalid type code: 31
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:219)
at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:224)
at weblogic.common.internal.RMIBootServiceImpl_922_WLStub.authenticate(Unknown Source)
at weblogic.security.acl.internal.Security$1.run(Security.java:185)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:147)
at weblogic.security.acl.internal.Security.authenticate(Security.java:181)
at weblogic.jndi.WLInitialContextFactoryDelegate.authenticateRemotely(WLInitialContextFactoryDelegate.java:726)
at weblogic.jndi.WLInitialContextFactoryDelegate.pushSubject(WLInitialContextFactoryDelegate.java:659)
… 40 more
Caused by: java.io.StreamCorruptedException: invalid type code: 31
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1356)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:195)
at weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:565)
at weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:191)
at weblogic.rmi.internal.ObjectIO.readObject(ObjectIO.java:62)
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:217)
… 48 more[/java]

Fix

Edit your pom.xml, and add the two following properties:
[xml] <com.sun.xml.namespace.QName.useCompatibleSerialVersionUID>1.0</com.sun.xml.namespace.QName.useCompatibleSerialVersionUID>
<sun.lang.ClassLoader.allowArraySyntax>1.5</sun.lang.ClassLoader.allowArraySyntax>[/xml]

If needed, and if your current pom is only intented at package and deploying a WAR, you can also downgrade the Java compilation version, adding the block:
[xml] <maven.compiler.target>1.5</maven.compiler.target>
<maven.compiler.source>1.5</maven.compiler.source>
[/xml]
You can also append those properties on the head of environment variable MAVEN_OPTS.

Case

Trying to install Oracle Agent on a Windows XP SP2 desktop, I get the following error:
[java]ERROR: OUI-10038:You do not have the necessary permissions to write to the inventory at \Oracle\Inventory. Please make sure that you have the appropriate permissions to perform the installation.[/java]

Fix

Edit the registry. For the key HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\inst_loc, replace the value \Oracle\Inventory with C:\Oracle\Inventory

Case

I use Oracle Coherence (Tangosol) as distributed cache for a given class. This class contains a non-static Log4J’s Logger as field.
(what a Logger does in an “POJO” is not obvious and requires further development ; let’s say it is used during the development phase, but has nothing to do in a POJO and should be removed later).
When Tangosol tries to put the object in cache, I get this error:

[java]java.io.NotSerializableException: org.apache.log4j.Logger[/java]

Complete stacktrace

java.io.NotSerializableException: org.apache.log4j.Logger
        at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1156)
        at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
        at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
        at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
        at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
        at com.tangosol.util.ExternalizableHelper.writeSerializable(ExternalizableHelper.java:2181)
        at com.tangosol.util.ExternalizableHelper.writeObjectInternal(ExternalizableHelper.java:2603)
        at com.tangosol.util.ExternalizableHelper.serializeInternal(ExternalizableHelper.java:2529)
        at com.tangosol.util.ExternalizableHelper.toBinary(ExternalizableHelper.java:206)
        at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.DistributedCache$ConverterValueToBinary.convert(DistributedCache.CDB:3)
        at com.tangosol.util.ConverterCollections$ConverterMap.put(ConverterCollections.java:1566)
        at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.DistributedCache$ViewMap.put(DistributedCache.CDB:1)
        at com.tangosol.coherence.component.util.SafeNamedCache.put(SafeNamedCache.CDB:1)
        at com.lalou.jonathan.business.cache.TypedEhCache.put(TypedEhCache.java:73)
        at com.lalou.jonathan.business.cache.TypedEhCache.setInCache(TypedEhCache.java:58)
        at com.lalou.jonathan.business.StringToRequestListTransformer.transform(JonathanTransformer.java:104)
        at org.mule.transformer.AbstractMessageAwareTransformer.doTransform(AbstractMessageAwareTransformer.java:68)
        at org.mule.transformer.AbstractTransformer.transform(AbstractTransformer.java:254)
        at org.mule.DefaultMuleMessage.applyAllTransformers(DefaultMuleMessage.java:621)
        at org.mule.DefaultMuleMessage.applyTransformers(DefaultMuleMessage.java:582)
        at org.mule.DefaultMuleMessage.applyTransformers(DefaultMuleMessage.java:575)
        at org.mule.DefaultMuleEvent.transformMessage(DefaultMuleEvent.java:326)
        at org.mule.DefaultMuleEvent.transformMessage(DefaultMuleEvent.java:321)
        at org.mule.component.simple.PassThroughComponent.doInvoke(PassThroughComponent.java:27)
        at org.mule.component.AbstractComponent.invokeInternal(AbstractComponent.java:133)
        at org.mule.component.AbstractComponent.invoke(AbstractComponent.java:161)
        at org.mule.service.AbstractService.invokeComponent(AbstractService.java:929)
        at org.mule.model.seda.SedaService.access$100(SedaService.java:56)
        at org.mule.model.seda.SedaService$ComponentStageWorker.run(SedaService.java:574)
        at org.mule.work.WorkerContext.run(WorkerContext.java:310)
        at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1061)
        at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
        at java.lang.Thread.run(Thread.java:619)

Fix

Declare the Logger as static:

[java]private final Logger LOG = Logger.getLogger(CsvFileObject.class);[/java]

In my case, the issue was fixed. If it is not, try to declare the Logger as static transient, I assume it could help.