Deltaspike TransactionStrategy可选的模糊依赖项

Question

我使用全局替代配置在apache-deltaspike.properties，中定义apache-deltaspike.properties，：

globalAlternatives.org.apache.deltaspike.jpa.spi.transaction.TransactionStrategy=org.apache.deltaspike.jpa.impl.transaction.ResourceLocalTransactionStrategy

我的deltaspike-data beans.xml只有以下几个模块：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns="http://xmlns.jcp.org/xml/ns/javaee"
       xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                           http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
       version="1.1" bean-discovery-mode="all">
    <interceptors>
        <class>org.apache.deltaspike.jpa.impl.transaction.TransactionalInterceptor</class>
    </interceptors>
</beans>

但我被下面的例外所打击，这对我来说没有任何意义：

WELD-001409: Ambiguous dependencies for type TransactionStrategy with qualifiers @Default
  at injection point [UnbackedAnnotatedField] @Inject private org.apache.deltaspike.jpa.impl.transaction.TransactionalInterceptor.transactionStrategy
  at org.apache.deltaspike.jpa.impl.transaction.TransactionalInterceptor.transactionStrategy(TransactionalInterceptor.java:0)
  Possible dependencies: 
  - Managed Bean [class org.apache.deltaspike.jpa.impl.transaction.BeanManagedUserTransactionStrategy] with qualifiers [@Any @Default],
  - Managed Bean [class org.apache.deltaspike.jpa.impl.transaction.ResourceLocalTransactionStrategy] with qualifiers [@Any @Default]

显然，默认情况下，BeanManagedUserTransactionStrategy替代方案正在被激活。因为当我删除全局替代定义时，我可以看到deltaspike-data模块使用BeanManagedUserTransactionStrategy.

依赖关系版本：

• weld-se-shaded：3.0.6#en0#

1.9.3：

• deltaspike

有什么办法绕过它吗？我需要使用ResourceLocalTransactionStrategy.

Answer 1

我使用的是一种变通方法:将BeanManagedUserTransactionStrategy排除在bean扫描之外。

我在beans.xml中使用焊接特定的XML模式来完成此操作：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:weld="http://jboss.org/schema/weld/beans">
    <weld:scan>
        <weld:exclude name="org.apache.deltaspike.jpa.impl.transaction.BeanManagedUserTransactionStrategy"/>
    </weld:scan>
    <interceptors>
        <class>org.apache.deltaspike.jpa.impl.transaction.TransactionalInterceptor</class>
    </interceptors>
</beans>

通过这样做，我放弃了可移植性，这意味着这将只适用于焊接。