CdiJtaProcessEngineConfiguration requests Transaction Manager before its is loaded

Question

I am successfully able to get Activiti working with the JtaProcessEngineConfiguration and separately with the CdiStandaloneProcessEngineConfiguration.

But i am not able to get the CdiJtaProcessEngineConfiguration working, an example of my config is as follows

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans <a href="http://www.springframework.org/schema/beans/spring-beans.xsd">

" rel="nofollow">http://www.springframework.org/schema/beans/spring-beans.xsd">

</a>    <bean id="transactionManager" class="org.springframework.jndi.JndiObjectFactoryBean">
        <property name="jndiName" value="java:comp/TransactionManager"></property>
        <property name="resourceRef" value="true" />
    </bean>

    <bean id="processEngineConfiguration" class="org.activiti.cdi.CdiJtaProcessEngineConfiguration">
        <property name="transactionManager" ref="transactionManager" />
        <property name="transactionsExternallyManaged" value="true" />

        <property name="dataSourceJndiName" value="openejb:Resource/jdbc/AppDS" />
        <property name="databaseSchemaUpdate" value="false"/>

        <property name="jobExecutorActivate" value="false"/>
        <property name="asyncExecutorEnabled" value="true"/>
        <property name="asyncExecutorActivate" value="true"/>
        <property name="history" value="audit"/>
    </bean>
</beans>

With the error being

javax.naming.NameNotFoundException: Name [TransactionManager] is not bound in this Context. Unable to find [TransactionManager].

and the stack trace is as follows

2016-11-29 13:47:37 ERROR ProcessEngines:174 - Exception while initializing process engine: Error creating bean with name 'processEngineConfiguration' defined in resource loaded through InputStream: Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager';
nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in resource loaded through InputStream: Invocation of init method failed;
nested exception is javax.naming.NameNotFoundException: Name [TransactionManager] is not bound in this Context. Unable to find [TransactionManager].
    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processEngineConfiguration' defined in resource loaded through InputStream: Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager';
nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in resource loaded through InputStream: Invocation of init method failed;
nested exception is javax.naming.NameNotFoundException: Name [TransactionManager] is not bound in this Context. Unable to find [TransactionManager].
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359)
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary

I am not sure what to try next

The app server i am using is Tomee-plus 1.7.3

Cheers Adam

[Edit 1] Please note the you need to load the JtaProcessEngineConfiguration manual when the app is ready but CdiStandaloneProcessEngineConfiguration and CdiJtaProcessEngineConfiguration are loaded automatically via the ActivitiExtension class.

[Edit 2] When looking up the Transaction Manager as follows (as per @Romain Manni-Bucau Suggestion) inside an extended JtaProcessEngineConfiguration (without cdi)

    try {
        InitialContext initialContext = new InitialContext();
        try {
            transactionManager = (TransactionManager) initialContext.lookup("openejb:Resource/TransactionManager");
        } finally {
            initialContext.close();
        }

    } catch (NamingException e) {
        LOGGER.error(e.getMessage(), e);
    }

I get the following exception trace

2016-12-06 09:16:35 ERROR TestJtaProcessEngineConfiguration:29 - Name     "Resource/TransactionManager" not found.
javax.naming.NameNotFoundException: Name "Resource/TransactionManager" not found.
at org.apache.openejb.core.ivm.naming.IvmContext.federate(IvmContext.java:199)
at org.apache.openejb.core.ivm.naming.IvmContext.lookup(IvmContext.java:151)
at org.apache.openejb.core.ivm.naming.IvmContext.lookup(IvmContext.java:119)
at javax.naming.InitialContext.lookup(InitialContext.java:417)
<snip>

[Edit 3] trying to use "java.naming.factory.initial=org.apache.openejb.core.OpenEJBI‌​nitialContextFactory" results in the following stack trace.

Cannot instantiate class: org.apache.openejb.core.OpenEJBInitialContextFactory [Root exception is java.lang.ClassNotFoundException: org.apache.openejb.core.OpenEJBInitialContextFactory]
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:674)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:313)
at javax.naming.InitialContext.init(InitialContext.java:244)
at javax.naming.InitialContext.<init>(InitialContext.java:216)

But using a jndi string of "openejb:TransactionManager" works

SUCCESS the working config uses a jndiName property as follows.

<property name="jndiName" value="openejb:TransactionManager"></property>

Answer 1

With @Romain Manni-Bucau help the solution is a jndi name of "openejb:TransactionManager"

My edit to allow me to accept @Romain Manni-Bucau answer was rejected, posting the correct answer here.