AnnotationLdtmAttributeSource.java 文件源码

private PlatformTransactionManager determineQualifiedTransactionManager(String qualifier) {
    PlatformTransactionManager txManager = this.transactionManagerCache.get(qualifier);
    if (txManager == null) {
        txManager = BeanFactoryAnnotationUtils.qualifiedBeanOfType(
                this.beanFactory, PlatformTransactionManager.class, qualifier);
        this.transactionManagerCache.putIfAbsent(qualifier, txManager);
    }

    return txManager;
}