problem getting back the identity of a created row
hi all,
i have to migrate an application from postgres to mssqlserver2005.
it went quite well, until so far, but now i'm blocked for a while.
When user enter my application, a row is written to a table "Sessions(id int, user int, startTime datetime)".
(the id is auto-generated by the database).
I see the row is correctly written in the database, but when i want to retrieve the id that the database generated,
the application crashes:
2007-05-11 13:57:33,516 ERROR [org.jboss.ejb.plugins.LogInterceptor] RuntimeException:
java.lang.ClassCastException
at be.xxxx.xxx.xxx.bean.SessionBean$Proxy.getId(<generated>)
at be.xxxx.xxx.xxx.bean.SessionBean.getSessionValue(SessionBean.java:120)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.ejb.EntityContainer$ContainerInterceptor.invoke(EntityContainer.java:1044)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCRelationInterceptor.invoke(JDBCRelationInterceptor.java:95)
at org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invoke(EntitySynchronizationInterceptor.java:301)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186)
at org.jboss.ejb.plugins.EntityReentranceInterceptor.invoke(EntityReentranceInterceptor.java:82)
at org.jboss.ejb.plugins.EntityInstanceInterceptor.invoke(EntityInstanceInterceptor.java:174)
at org.jboss.ejb.plugins.EntityLockInterceptor.invoke(EntityLockInterceptor.java:89)
at org.jboss.ejb.plugins.EntityCreationInterceptor.invoke(EntityCreationInterceptor.java:53)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:243)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:104)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:117)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at org.jboss.ejb.EntityContainer.internalInvoke(EntityContainer.java:483)
at org.jboss.ejb.Container.invoke(Container.java:674)
at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:353)
at org.jboss.ejb.plugins.local.EntityProxy.invoke(EntityProxy.java:38)
at $Proxy220.getSessionValue(Unknown Source)
However, I think I changed everything correctly:
standardjbosscmp-jdbc.xml wrote:
<jbosscmp-jdbc>
<defaults>
<datasource>java:/MSSQLDS</datasource>
<datasource-mapping>MSSQL</datasource-mapping>
<create-table>true</create-table>
<remove-table>false</remove-table>
<read-only>false</read-only>
<time-out>300</time-out>
<pk-constraint>true</pk-constraint>
<fk-constraint>false</fk-constraint>
<row-locking>false</row-locking>
<preferred-relation-mapping>foreign-key</preferred-relation-mapping>
<read-ahead>
<strategy>on-load</strategy>
<page-size>1000</page-size>
<eager-load-group>*</eager-load-group>
</read-ahead>
<list-cache-max>1000</list-cache-max>
<unknown-pk>
<key-generator-factory>UUIDKeyGeneratorFactory</key-generator-factory>
<unknown-pk-class>java.lang.String</unknown-pk-class>
<jdbc-type>VARCHAR</jdbc-type>
<sql-type>VARCHAR(32)</sql-type>
</unknown-pk>
<entity-command name="default"/>
</defaults>
<type-mapping>
<name>MSSQL</name>
<row-locking-template>SELECT ?1 FROM ?2 with (rowlock) WHERE ?3</row-locking-template>
<pk-constraint-template>CONSTRAINT ?1 PRIMARY KEY (?2)</pk-constraint-template>
<fk-constraint-template>ALTER TABLE ?1 ADD CONSTRAINT ?2 FOREIGN KEY (?3) REFERENCES ?4 (?5)</fk-constraint-template>
<auto-increment-template>?1 IDENTITY</auto-increment-template>
<alias-header-prefix>t</alias-header-prefix>
<alias-header-suffix>_</alias-header-suffix>
<alias-max-length>32</alias-max-length>
<subquery-supported>true</subquery-supported>
<true-mapping>1</true-mapping>
<false-mapping>0</false-mapping>
<function-mapping>
<function-name>concat</function-name>
<function-sql>(?1 + ?2)</function-sql>
</function-mapping>
<function-mapping>
<function-name>substring</function-name>
<function-sql>substring(?1, ?2, ?3)</function-sql>
</function-mapping>
<function-mapping>
<function-name>lcase</function-name>
<function-sql>lower(?1)</function-sql>
</function-mapping>
<function-mapping>
<function-name>length</function-name>
<function-sql>len(?1)</function-sql>
</function-mapping>
<function-mapping>
<function-name>locate</function-name>
<function-sql>charindex(?1, ?2, ?3)</function-sql>
</function-mapping>
<function-mapping>
<function-name>abs</function-name>
<function-sql>abs(?1)</function-sql>
</function-mapping>
<function-mapping>
<function-name>sqrt</function-name>
<function-sql>sqrt(?1)</function-sql>
</function-mapping>
<function-mapping>
<function-name>ucase</function-name>
<function-sql>upper(?1)</function-sql>
</function-mapping>
<mapping>
<java-type>java.lang.Integer</java-type>
<jdbc-type>INTEGER</jdbc-type>
<sql-type>INT</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Character</java-type>
<jdbc-type>CHAR</jdbc-type>
<sql-type>CHAR</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Short</java-type>
<jdbc-type>SMALLINT</jdbc-type>
<sql-type>SMALLINT</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Long</java-type>
<jdbc-type>BIGINT</jdbc-type>
<sql-type>BIGINT</sql-type>
</mapping>
<mapping>
<java-type>java.math.BigDecimal</java-type>
<jdbc-type>VARCHAR</jdbc-type>
<sql-type>VARCHAR(256)</sql-type>
</mapping>
<mapping>
<java-type>java.lang.String</java-type>
<jdbc-type>VARCHAR</jdbc-type>
<sql-type>VARCHAR(256)</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Object</java-type>
<jdbc-type>LONGVARBINARY</jdbc-type>
<sql-type>IMAGE</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Byte</java-type>
<jdbc-type>TINYINT</jdbc-type>
<sql-type>TINYINT</sql-type>
</mapping>
<mapping>
<!--
| Note that you lose granularity here
| Use a numeric type and store milliseconds if you really need it
-->
<java-type>java.sql.Timestamp</java-type>
<jdbc-type>TIMESTAMP</jdbc-type>
<sql-type>DATETIME</sql-type>
</mapping>
<mapping>
<java-type>java.sql.Date</java-type>
<jdbc-type>DATE</jdbc-type>
<sql-type>DATETIME</sql-type>
</mapping>
<mapping>
<java-type>java.sql.Time</java-type>
<jdbc-type>TIME</jdbc-type>
<sql-type>DATETIME</sql-type>
</mapping>
<mapping>
<java-type>java.util.Date</java-type>
<jdbc-type>TIMESTAMP</jdbc-type>
<sql-type>DATETIME</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Boolean</java-type>
<jdbc-type>BIT</jdbc-type>
<sql-type>BIT</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Float</java-type>
<jdbc-type>REAL</jdbc-type>
<sql-type>REAL</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Double</java-type>
<jdbc-type>DOUBLE</jdbc-type>
<sql-type>FLOAT</sql-type>
</mapping>
</type-mapping>
<entity-commands>
<!-- default command; doesn't support unknown-pk -->
<entity-command name="default"
class="org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand"/>
<!-- variation on default that skips select before insert -->
<entity-command name="no-select-before-insert"
class="org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand">
<attribute name="SQLExceptionProcessor">jboss.jdbc:service=SQLExceptionProcessor</attribute>
</entity-command>
<!-- fetches next key value with the specified sql statement -->
<entity-command name="pk-sql"
class="org.jboss.ejb.plugins.cmp.jdbc.JDBCPkSqlCreateCommand">
<attribute name="pk-sql">SELECT SCOPE_IDENTITY()</attribute>
</entity-command>
<!-- this command requires auto-increment element for unknown-pk -->
<entity-command name="mysql-get-generated-keys"
class="org.jboss.ejb.plugins.cmp.jdbc.mysql.JDBCMySQLCreateCommand"/>
<!-- retrieves generated key of the record inserted into hsql db -->
<entity-command name="hsqldb-fetch-key"
class="org.jboss.ejb.plugins.cmp.jdbc.hsqldb.JDBCHsqldbCreateCommand"/>
<!-- retrieves generated key of the record inserted into sybase db -->
<entity-command name="sybase-fetch-key"
class="org.jboss.ejb.plugins.cmp.jdbc.sybase.JDBCSybaseCreateCommand"/>
<!-- retrieves serial value of the record inserted into informix db -->
<entity-command name="informix-serial"
class="org.jboss.ejb.plugins.cmp.jdbc.informix.JDBCInformixCreateCommand"/>
<!-- uses key generator to fetch the next key value -->
<entity-command name="key-generator"
class="org.jboss.ejb.plugins.cmp.jdbc.JDBCKeyGeneratorCreateCommand">
<attribute name="key-generator-factory">UUIDKeyGeneratorFactory</attribute>
</entity-command>
<!-- to auto-increment primary-keys -->
<entity-command name="postgresql-fetch-seq"
class="org.jboss.ejb.plugins.cmp.jdbc.postgres.JDBCPostgresCreateCommand"/>
<entity-command
name="get-generated-keys" class="org.jboss.ejb.plugins.cmp.jdbc.jdbc3.JDBCGetGeneratedKeysCreateCommand" />
<!-- JDK1.4
<entity-command name="get-generated-keys"
class="org.jboss.ejb.plugins.cmp.jdbc.jdbc3.JDBCGetGeneratedKeysCreateCommand"/>
-->
</entity-commands>
standardjaws.xml wrote:
<jaws>
<datasource>java:/MSSQLDS</datasource>
<type-mapping>MSSQL</type-mapping>
<debug>false</debug>
<default-entity>
<create-table>true</create-table>
<remove-table>false</remove-table>
<tuned-updates>true</tuned-updates>
<read-only>false</read-only>
<time-out>300</time-out>
<row-locking>false</row-locking>
<read-ahead>false</read-ahead>
</default-entity>
<type-mapping-definition>
<name>MSSQL</name>
<mapping>
<java-type>java.lang.Integer</java-type>
<jdbc-type>INTEGER</jdbc-type>
<sql-type>INT</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Character</java-type>
<jdbc-type>CHAR</jdbc-type>
<sql-type>CHAR</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Short</java-type>
<jdbc-type>SMALLINT</jdbc-type>
<sql-type>SMALLINT</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Long</java-type>
<jdbc-type>BIGINT</jdbc-type>
<sql-type>BIGINT</sql-type>
</mapping>
<mapping>
<java-type>java.math.BigDecimal</java-type>
<jdbc-type>VARCHAR</jdbc-type>
<sql-type>VARCHAR(256)</sql-type>
</mapping>
<mapping>
<java-type>java.lang.String</java-type>
<jdbc-type>VARCHAR</jdbc-type>
<sql-type>VARCHAR(256)</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Object</java-type>
<jdbc-type>JAVA_OBJECT</jdbc-type>
<sql-type>IMAGE</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Byte</java-type>
<jdbc-type>TINYINT</jdbc-type>
<sql-type>TINYINT</sql-type>
</mapping>
<mapping>
<java-type>java.sql.Timestamp</java-type>
<jdbc-type>TIMESTAMP</jdbc-type>
<sql-type>TIMESTAMP</sql-type>
</mapping>
<mapping>
<java-type>java.sql.Date</java-type>
<jdbc-type>DATE</jdbc-type>
<sql-type>DATETIME</sql-type>
</mapping>
<mapping>
<java-type>java.sql.Time</java-type>
<jdbc-type>TIME</jdbc-type>
<sql-type>DATETIME</sql-type>
</mapping>
<mapping>
<java-type>java.util.Date</java-type>
<jdbc-type>DATE</jdbc-type>
<sql-type>DATETIME</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Boolean</java-type>
<jdbc-type>BIT</jdbc-type>
<sql-type>BIT</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Float</java-type>
<jdbc-type>REAL</jdbc-type>
<sql-type>REAL</sql-type>
</mapping>
<mapping>
<java-type>java.lang.Double</java-type>
<jdbc-type>DOUBLE</jdbc-type>
<sql-type>FLOAT</sql-type>
</mapping>
</type-mapping-definition>
this is in my bean wrote:
/**
* Entity bean die een sessie beschrijft.
*
* @ejb.bean
* name="Session"
* view-type="local"
* local-jndi-name="LocalSessionEJB"
* type="CMP"
* cmp-version="2.x"
* primkey-field="id"
*
* @ejb.transaction type="required"
*
* @ejb.persistence table-name="sessions"
* @ejb.pk class="java.lang.Integer"
*
* @ejb.permission role-name="system"
* @ejb.security-identity run-as="system"
*
* @ejb.value-object
* @ejb.util generate="physical"
*
* @jboss.entity-command
* name="get-generated-keys"
*
* @jboss.method-attributes pattern="get*" read-only="true"
*
*/
public Integer ejbCreate....
public void ejbPostCreate...
/**
* id of the sessie.
* @ejb.interface-method view-type="local"
* @ejb.persistence
* @jboss.persistence auto-increment="true"
*/
public abstract Integer getId();
/**
* @ejb.interface-method view-type="local"
*/
public abstract void setId(Integer id);
public be.xxxx.xxxx.data.bean.SessionValue getSessionValue() {
System.out.println("before Sessionvalue");
SessionValue sessionValue
= new be.tinc.bkw.data.bean.SessionValue();
System.out.println("after Sessionvalue");
UserLocal userLocal;
System.out.println("getting the user");
//added for debuggin
System.out.println("user "+getUser());
System.out.println("startTime "+getStartTime());
System.out.println("endTime "+getEndTime());
System.out.println("after getting the user");
System.out.println("getting the id");
//HERE IT CRASHES !!!!!!!!!!!!!!!!!!!
System.out.println("the id is: "+getId());
System.out.println("after getting the id");
sessionValue.setId(getId());
userLocal = getUser();
if (null != userLocal) {
sessionValue.setUser(userLocal.getUserValue());
}
sessionValue.setStartTime(getStartTime());
if (getEndTime() != null){
sessionValue.setEndTime(getEndTime());
}
return sessionValue;
}