[weld-issues] [JBoss JIRA] (WELD-1032) Lifecycle stacktrace in the exception message: What's causing is my bean being created too early?
Lifecycle stacktrace in the exception message: What's causing is my bean being created
too early?
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Key: WELD-1032
URL: https://issues.jboss.org/browse/WELD-1032
Project: Weld
Issue Type: Feature Request
Reporter: Geoffrey De Smet
When not using (C)DI, you can easily see when a component is created too early by looking
at the stacktrace:
{code}
"database username is null"
at ConnectionManager.createConnection()
at DogDao.createInstance()
at DogDao.getInstance()
at PersonDao.createInstance()
at PersonDao.getInstance()
at PersonService.createInstance()
at PersonService.getInstance()
at Main.beforeDatabaseUsernameIsAsked()
{code}
Clearly, beforeDatabaseUsernameIsAsked() has the problem: it shouldn't call
PersonService.getInstance().
However, turn this code into (C)DI and you get something like this stacktrace:
{code}
"database username is null"
at ConnectionManager.createConnection()
at java.reflect....
at org.jboss.weld...
at org.jboss.arquillian...
{code}
Now, it's not clear any more that Main.beforeDatabaseUsernameIsAsked() is the problem,
isn't it?
There is absolutely no mention of Main.
And then it is a challenge to find out what's causing the lifecycle to behave
differently that you expected
and how the lifecycle is actually behaving now.
It would be nice if the exception message contains something like
{code}
"database username is null"
during creation of ConnectionManager
for DogDao
for PersonDao
for PersonService
for Main
at ConnectionManager.createConnection()
....
{code}
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