[hibernate-dev] Regarding Implementation of getTables(Identifier catalog, Identifier schema) function in Hibernate
ashu00.speed at gmail.com
Fri Jul 7 00:56:55 EDT 2017
Thanks for the update, will make the changes.
On Tue, Jul 4, 2017 at 2:27 PM, andrea boriero <andrea at hibernate.org> wrote:
> I think your consideration makes sense.
> Trying to remember the reasons driving my choice to use the empty String
> instead of null for the getTables method, but at the moment nothing that
> pops us in my mind prevents the use of null.
> On 4 July 2017 at 09:15, Ashudeep Sharma <ashu00.speed at gmail.com> wrote:
>> Hi Team,
>> I was looking at the implementation of
>> public NameSpaceTablesInformation getTables(Identifier catalog, Identifier
>> public TableInformation getTable(Identifier catalog, Identifier schema,
>> Identifier tableName)
>> function and found a little bit of differences in the implementation part.
>> On looking at the comments, the way to go is:
>> // The table did not define an explicit namespace:
>> 1) look in current namespace
>> 2) look in default namespace
>> 3) look in all namespaces - multiple hits is considered an error
>> I believe the same logic is also applied in getTables(Identifier catalog,
>> Identifier schema) function, except that the schemaFilter has been
>> initialized to "" instead of null.
>> Please refer to this piece of code
>> I checked the parameter definition of ResultSet getTables(String catalog,
>> String schemaPattern, String tableNamePattern, String types) throws
>> java.lang.String, java.lang.String, java.lang.String)
>> , which says
>> schemaPattern - a schema name pattern; must match the schema name as it is
>> stored in the database; "" retrieves those without a schema; null means
>> that the schema name should not be used to narrow the search
>> since the code checks for the condition that database support schemas, i
>> think it should be initialized to null instead of "".
>> Let me know your thoughts.
>> hibernate-dev mailing list
>> hibernate-dev at lists.jboss.org
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