Using a JPA based idempotent repository

 

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Home >> discussions >> Apache Camel users >> November, 2010

Using a JPA based idempotent repository ~

Re: SMTP Attachment filename (7 lines)
Nov 15, 2010
Awold Tweet	I’ve been trying to set up a working example of using a jpa store for idempotent file handling with Hibernate and it’s not quite working. I’m currently using an H2 database. Everything seems to start up fine until it tries to persist the message processed entity (that's #4 below). But I also have some general questions too. 1) Am I forced to use OpenJPA? My project uses Hibernate and thus I’ll already have an entity manager created, etc. 2) CAMEL_MESSAGEPROCESSED and OPENJPA_SEQUENCE_TABLE tables are created automatically but nothing was in the OPENJPA_SEQUENCE_TABLE table. Should a record have been created automatically in this table? 3) Having CAMEL_MESSAGEPROCESSED and OPENJPA_SEQUENCE_TABLE tables created automatically in a production db is probably not going to fly. What would be the best approach to creating DDL statements for these tables? I downloaded the Apache Camel 2.5.0 and did not find any creation scripts. I understand that the DDL script could vary by DB, but it seems like this could be a common issue so an ANSI SQL compliant DDL script could/should be shipped I would think. 4) Here is the error I’m receiving. Why isn’t ID being generated? In my console I see a select against CAMEL_MESSAGEPROCESSED, then an insert. But never an operation against OPENJPA_SEQUENCE_TABLE to generate an ID. 2010-11-15 09:52:54,347 [B2BClinicalData] DEBUG GenericFileOnCompletion - Done processing file: GenericFile[Doc 1.txt] using exchange: Exchange[Message: GenericFile[Doc 1.txt]] 2010-11-15 09:52:54,347 [B2BClinicalData] DEBUG SQL - select messagepro0_.id as id0_, messagepro0_.messageId as messageId0_, messagepro0_.processorName as processo3_0_ from CAMEL_MESSAGEPROCESSED messagepro0_ where messagepro0_.processorName=? and messagepro0_.messageId=? 2010-11-15 09:52:54,362 [B2BClinicalData] TRACE StringType - binding 'FileConsumer' to parameter: 1 2010-11-15 09:52:54,362 [B2BClinicalData] TRACE StringType - binding 'Doc 1.txt' to parameter: 2 2010-11-15 09:52:54,378 [B2BClinicalData] DEBUG SQL - insert into CAMEL_MESSAGEPROCESSED (id, messageId, processorName) values (null, ?, ?) 2010-11-15 09:52:54,378 [B2BClinicalData] TRACE StringType - binding 'Doc 1.txt' to parameter: 1 2010-11-15 09:52:54,378 [B2BClinicalData] TRACE StringType - binding 'FileConsumer' to parameter: 2 2010-11-15 09:52:54,394 [B2BClinicalData] WARN JDBCExceptionReporter - SQL Error: 90006, SQLState: 90006 2010-11-15 09:52:54,394 [B2BClinicalData] ERROR JDBCExceptionReporter - NULL not allowed for column "ID"; SQL statement: insert into CAMEL_MESSAGEPROCESSED (id, messageId, processorName) values (null, ?, ?) [90006-144] <persistence-unit name="samplePU" transaction-type="RESOURCE_LOCAL"> <class>org.apache.camel.processor.idempotent.jpa.MessageProcessed</class> </persistence-unit> <bean id="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate"> <property name="transactionManager"> <bean class="org.springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="entityManagerFactory"/> </bean> </property> </bean> <bean id="dbDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="org.h2.Driver " /> <property name="url" value="jdbc:h2:tcp://localhost/~/test;USER=sa" /> <property name="username" value="sa" /> <property name="password" value="" /> </bean> <bean id="jpaTemplate" class="org.springframework.orm.jpa.JpaTemplate"> <property name="entityManagerFactory" ref="entityManagerFactory"/> </bean> <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> <property name="dataSource" ref="dbDataSource" /> <property name="jpaVendorAdapter"> <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"> <property name="database" value="${ecdi_db.type}" /> <property name="showSql" value="false" /> <property name="generateDdl" value="false" /> </bean> </property> </bean> <bean id="jpaStore" class="org.apache.camel.processor.idempotent.jpa.JpaMessageIdRepository"> <constructor-arg index="0" ref="jpaTemplate"/> <constructor-arg index="1" value="FileConsumer"/> </bean> Reply
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Thanks a lot -Yushu +-------------------------------------------------+ | Yushu Yao… svn commit: r987242 - in /httpd/httpd/trunk/docs/manual/vhosts: ip-based.xml name-based.xml Author: poirier Date: Thu Aug 19 17:38:18 2010 New Revision: 987242 URL: http://svn.apache.org/viewvc?rev=987242&view=rev Log: Minor corrections and cleanup in the descriptions of IP-based and name-based virtual hosts. Modified: … Re: accessing repository It looks like your classpath is missing some jars. The error message should look something like this: Unable to access a repository with the following settings : org.apache.jackrabbit.repository.uri: http://localhost:7402/crx/server The… private repository I would like to use Apache Buildr in multiple machines with the minimum network overhead. How can I cache compile .dependencies to a central machine? Can I use sftp instead of making a private Maven or Ivy repository? 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