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The only point of supporting connection-related properties on
EM is to be able to change connection for that particular EM - that's exactly
what currently happens, see EntityManagerImpl.setProperties and
processProperties methods.
----- Original Message -----
Sent: Monday, March 16, 2009 2:48
PM
Subject: [eclipselink-dev]
setProperty(Object,Value) of EM API
Hello All:
I am trying to implement
'setProperty(Object,Value)' method of EM API. I have few questions about the
implementation :
We have following properties that are supported
properties in EM:
JOIN_EXISTING_TRANSACTION
PERSISTENCE_CONTEXT_REFERENCE_MODE
PERSISTENCE_CONTEXT_CLOSE_ON_COMMIT
PERSISTENCE_CONTEXT_PERSIST_ON_COMMIT
PERSISTENCE_CONTEXT_FLUSH_MODE
ORACLE_PROXY_TYPE
EXCLUSIVE_CONNECTION_MODE
EXCLUSIVE_CONNECTION_IS_LAZY
JTA_DATASOURCE
NON_JTA_DATASOURCE
JDBC_DRIVER
JDBC_URL
JDBC_USER
JDBC_PASSWORD
CONNECTION_POLICY
VALIDATE_EXISTENCE
FLUSH_CLEAR_CACHE
In the above, 'JDBC_DRIVER', 'JDBC_USER', 'JDBC_URL',
'JDBC_PASSWORD' cannot be changed once the connection is already made.
According to the Spec, if the 'value' is not valid , it
has to throw 'IllegalArgumentException.' I understand that we got to first
check for
properties that
should not be changed using 'setProperty() ? What are those properties that
should not be changed using 'setProperty()'
And also, does changing any
of the properties throw only 'IllegalArgumentException' ?
Thank
You
Regards
Darani
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