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Posted to dev@tuscany.apache.org by Adriano Crestani <ad...@gmail.com> on 2007/04/04 08:15:19 UTC
[DAS Java] created SDO graph doubt
Let me try to explain my doubt:
Lets suppose I create a select command and execute it. The returned
ResultSet has an attribute that belongs to the table X and is a FK to the
table Y, but no Y attribute is contained in the ResultSet. The question is:
does the das create, and also populate, the SDO graph only with the metadata
and data contained in the ResultSet or the das also adds to the SDO graph
the referenced Y table and its attributes and keep doing it till there is no
more referenced table?
I expect to be clear enough ; )
Adriano Crestani
Re: [DAS Java] created SDO graph doubt
Posted by Adriano Crestani <ad...@gmail.com>.
Last doubt moved to thread: "[DAS Java] created SDO graph doubt 2"
Adriano Crestani
On 4/7/07, Adriano Crestani <ad...@gmail.com> wrote:
>
> Another doubt:
>
> I have the following tables on my database:
>
> create table B (
> ID INTEGER NOT NULL PRIMARY KEY
> );
>
> create table A (
> ID INTEGER NOT NULL PRIMARY KEY,
> B_ID INTEGER,
> FOREIGN KEY (B_ID) REFERENCES B(ID)
> );
>
> OK, then I was analyzing the generated sdo graph when I execute the query
> "select * from A, B;", I got something like this:
>
> Graph1:
> http://cwiki.apache.org/confluence/download/attachments/45093/das_graph.JPG
>
> I understand the column B_ID would be considered only an integer column
> when of table A when there is no B table returned on the query. However, the
> B table is also returned on the query and as the B_ID column is a FK to the
> table B, shouldn't the graph be like this?:
>
> Graph2: http://cwiki.apache.org/confluence/download/attachments/45093/das+
> graph+as+I+suppose+it+shoud+be.JPG
>
> This way I think the data returned by the query would be better
> represented on the graph. Maybe there is a reason for the graph to be
> generated as Graph1 instead of Graph2.
> What do you say guys?
>
> Adriano Crestani
>
> On 4/5/07, Adriano Crestani <ad...@gmail.com> wrote:
> >
> > Thanks kelvin ; )
> >
> > Adriano Crestani
> >
> > On 4/4/07, Kevin Williams <ke...@qwest.net> wrote:
> > >
> > > The RDB DAS will only populate a graph with data returned from the
> > > used
> > > query. If you want a graph that contains data from related tables
> > > then
> > > the query provided must return that data (typically a join). The
> > > relationship tests in the test suite demonstrate this.
> > > --Kevin
> > >
> > > Adriano Crestani wrote:
> > >
> > > > Let me try to explain my doubt:
> > > >
> > > > Lets suppose I create a select command and execute it. The returned
> > > > ResultSet has an attribute that belongs to the table X and is a FK
> > > to the
> > > > table Y, but no Y attribute is contained in the ResultSet. The
> > > > question is:
> > > > does the das create, and also populate, the SDO graph only with the
> > > > metadata
> > > > and data contained in the ResultSet or the das also adds to the SDO
> > > graph
> > > > the referenced Y table and its attributes and keep doing it till
> > > there
> > > > is no
> > > > more referenced table?
> > > >
> > > > I expect to be clear enough ; )
> > > >
> > > >
> > > > Adriano Crestani
> > > >
> > >
> > >
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
> > > For additional commands, e-mail: tuscany-dev-help@ws.apache.org
> > >
> > >
> >
>
Re: [DAS Java] created SDO graph doubt
Posted by Kevin Williams <ke...@qwest.net>.
Hello Adriano,
To return a graph of related elements, the RDB DAS depends on the user
providing a Query that expresses the relationship between the elements.
This is most often done by providing a query that includes a join. See
the "relationship" examples in the DAS test suite.
Thanks,
--Kevin
Adriano Crestani wrote:
> Another doubt:
>
> I have the following tables on my database:
>
> create table B (
> ID INTEGER NOT NULL PRIMARY KEY
> );
>
> create table A (
> ID INTEGER NOT NULL PRIMARY KEY,
> B_ID INTEGER,
> FOREIGN KEY (B_ID) REFERENCES B(ID)
> );
>
> OK, then I was analyzing the generated sdo graph when I execute the query
> "select * from A, B;", I got something like this:
>
> Graph1:
> http://cwiki.apache.org/confluence/download/attachments/45093/das_graph.JPG
>
>
> I understand the column B_ID would be considered only an integer
> column when
> of table A when there is no B table returned on the query. However, the B
> table is also returned on the query and as the B_ID column is a FK to the
> table B, shouldn't the graph be like this?:
>
> Graph2:
> http://cwiki.apache.org/confluence/download/attachments/45093/das+graph+as+I+suppose+it+shoud+be.JPG
>
>
> This way I think the data returned by the query would be better
> represented
> on the graph. Maybe there is a reason for the graph to be generated as
> Graph1 instead of Graph2.
> What do you say guys?
>
> Adriano Crestani
>
> On 4/5/07, Adriano Crestani <ad...@gmail.com> wrote:
>
>>
>> Thanks kelvin ; )
>>
>> Adriano Crestani
>>
>> On 4/4/07, Kevin Williams <ke...@qwest.net> wrote:
>> >
>> > The RDB DAS will only populate a graph with data returned from the
>> used
>> > query. If you want a graph that contains data from related tables
>> then
>> > the query provided must return that data (typically a join). The
>> > relationship tests in the test suite demonstrate this.
>> > --Kevin
>> >
>> > Adriano Crestani wrote:
>> >
>> > > Let me try to explain my doubt:
>> > >
>> > > Lets suppose I create a select command and execute it. The returned
>> > > ResultSet has an attribute that belongs to the table X and is a
>> FK to
>> > the
>> > > table Y, but no Y attribute is contained in the ResultSet. The
>> > > question is:
>> > > does the das create, and also populate, the SDO graph only with the
>> > > metadata
>> > > and data contained in the ResultSet or the das also adds to the SDO
>> > graph
>> > > the referenced Y table and its attributes and keep doing it till
>> there
>> > > is no
>> > > more referenced table?
>> > >
>> > > I expect to be clear enough ; )
>> > >
>> > >
>> > > Adriano Crestani
>> > >
>> >
>> >
>> >
>> > ---------------------------------------------------------------------
>> > To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
>> > For additional commands, e-mail: tuscany-dev-help@ws.apache.org
>> >
>> >
>>
>
---------------------------------------------------------------------
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Re: [DAS Java] created SDO graph doubt
Posted by Adriano Crestani <ad...@gmail.com>.
Another doubt:
I have the following tables on my database:
create table B (
ID INTEGER NOT NULL PRIMARY KEY
);
create table A (
ID INTEGER NOT NULL PRIMARY KEY,
B_ID INTEGER,
FOREIGN KEY (B_ID) REFERENCES B(ID)
);
OK, then I was analyzing the generated sdo graph when I execute the query
"select * from A, B;", I got something like this:
Graph1:
http://cwiki.apache.org/confluence/download/attachments/45093/das_graph.JPG
I understand the column B_ID would be considered only an integer column when
of table A when there is no B table returned on the query. However, the B
table is also returned on the query and as the B_ID column is a FK to the
table B, shouldn't the graph be like this?:
Graph2:
http://cwiki.apache.org/confluence/download/attachments/45093/das+graph+as+I+suppose+it+shoud+be.JPG
This way I think the data returned by the query would be better represented
on the graph. Maybe there is a reason for the graph to be generated as
Graph1 instead of Graph2.
What do you say guys?
Adriano Crestani
On 4/5/07, Adriano Crestani <ad...@gmail.com> wrote:
>
> Thanks kelvin ; )
>
> Adriano Crestani
>
> On 4/4/07, Kevin Williams <ke...@qwest.net> wrote:
> >
> > The RDB DAS will only populate a graph with data returned from the used
> > query. If you want a graph that contains data from related tables then
> > the query provided must return that data (typically a join). The
> > relationship tests in the test suite demonstrate this.
> > --Kevin
> >
> > Adriano Crestani wrote:
> >
> > > Let me try to explain my doubt:
> > >
> > > Lets suppose I create a select command and execute it. The returned
> > > ResultSet has an attribute that belongs to the table X and is a FK to
> > the
> > > table Y, but no Y attribute is contained in the ResultSet. The
> > > question is:
> > > does the das create, and also populate, the SDO graph only with the
> > > metadata
> > > and data contained in the ResultSet or the das also adds to the SDO
> > graph
> > > the referenced Y table and its attributes and keep doing it till there
> > > is no
> > > more referenced table?
> > >
> > > I expect to be clear enough ; )
> > >
> > >
> > > Adriano Crestani
> > >
> >
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
> > For additional commands, e-mail: tuscany-dev-help@ws.apache.org
> >
> >
>
Re: [DAS Java] created SDO graph doubt
Posted by Adriano Crestani <ad...@gmail.com>.
Thanks kelvin ; )
Adriano Crestani
On 4/4/07, Kevin Williams <ke...@qwest.net> wrote:
>
> The RDB DAS will only populate a graph with data returned from the used
> query. If you want a graph that contains data from related tables then
> the query provided must return that data (typically a join). The
> relationship tests in the test suite demonstrate this.
> --Kevin
>
> Adriano Crestani wrote:
>
> > Let me try to explain my doubt:
> >
> > Lets suppose I create a select command and execute it. The returned
> > ResultSet has an attribute that belongs to the table X and is a FK to
> the
> > table Y, but no Y attribute is contained in the ResultSet. The
> > question is:
> > does the das create, and also populate, the SDO graph only with the
> > metadata
> > and data contained in the ResultSet or the das also adds to the SDO
> graph
> > the referenced Y table and its attributes and keep doing it till there
> > is no
> > more referenced table?
> >
> > I expect to be clear enough ; )
> >
> >
> > Adriano Crestani
> >
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
> For additional commands, e-mail: tuscany-dev-help@ws.apache.org
>
>
Re: [DAS Java] created SDO graph doubt
Posted by Kevin Williams <ke...@qwest.net>.
The RDB DAS will only populate a graph with data returned from the used
query. If you want a graph that contains data from related tables then
the query provided must return that data (typically a join). The
relationship tests in the test suite demonstrate this.
--Kevin
Adriano Crestani wrote:
> Let me try to explain my doubt:
>
> Lets suppose I create a select command and execute it. The returned
> ResultSet has an attribute that belongs to the table X and is a FK to the
> table Y, but no Y attribute is contained in the ResultSet. The
> question is:
> does the das create, and also populate, the SDO graph only with the
> metadata
> and data contained in the ResultSet or the das also adds to the SDO graph
> the referenced Y table and its attributes and keep doing it till there
> is no
> more referenced table?
>
> I expect to be clear enough ; )
>
>
> Adriano Crestani
>
---------------------------------------------------------------------
To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
For additional commands, e-mail: tuscany-dev-help@ws.apache.org
Re: [DAS Java] created SDO graph doubt
Posted by Adriano Crestani <ad...@gmail.com>.
Thanks Amita, I also debugged the code and took this conclusion. And I
wasn't sure if it's supposed to work this way.
Is there anybody that could confirm that it should work this way?
Adriano Crestani
On 4/4/07, Amita Vadhavkar <am...@gmail.com> wrote:
>
> Hi Adriano,
> Let me show what I got so far: Below is the debug dump and the relevant
> portion
> of the logic will be in ResultSetProcessor and ResultSetRow. Based on
> it, it is seen
> that the parent/s attributes and data is not added. Please let me know
> if you are
> looking for something more/different.
>
> Regards,
> Amita
>
> -------------------------------------------------------------------------------------------------------------------
> DAS RDB] - ConnectionImpl.prepareStatement (94) : Preparing Statement:
> select ANORDER.ID, ANORDER.CUSTOMER_ID from CUSTOMER, ANORDER where
> CUSTOMER.ID = ANORDER.CUSTOMER_ID
>
> [DAS RDB] - ResultSetProcessor.<init> (55) :
> org.apache.tuscany.das.rdb.graphbuilder.impl.GraphBuilderMetadata@63a721
> 230 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetProcessor -
> org.apache.tuscany.das.rdb.graphbuilder.impl.GraphBuilderMetadata@63a721
> [DAS RDB] - ResultSetRow.processRow (69) :
> 230 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetRow -
> [DAS RDB] - TableData.<init> (45) : Creating TableData for table ANORDER
> 241 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.TableData - Creating
> TableData for table ANORDER
> [DAS RDB] - ResultSetRow.processRow (76) : Adding column: ID Value:
> 1 Table: ANORDER
> 241 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetRow - Adding
> column: ID Value: 1 Table: ANORDER
> [DAS RDB] - MappingWrapper.getTableByTypeName (118) : Looking for
> table by property: ANORDER
> 241 [main] DEBUG
> org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper - Looking
> for table by property: ANORDER
> [DAS RDB] - TableData.addData (53) : Adding column ID with value 1
> 241 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.TableData - Adding
> column ID with value 1
> [DAS RDB] - ResultSetRow.processRow (76) : Adding column:
> CUSTOMER_ID Value: 2 Table: ANORDER
> 241 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetRow - Adding
> column: CUSTOMER_ID Value: 2 Table: ANORDER
> [DAS RDB] - MappingWrapper.getTableByTypeName (118) : Looking for
> table by property: ANORDER
> 241 [main] DEBUG
> org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper - Looking
> for table by property: ANORDER
> [DAS RDB] - MappingWrapper.getColumn (336) : WARNING: Could not find
> column CUSTOMER_ID in table ANORDER
> 241 [main] DEBUG
> org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper - WARNING:
> Could not find column CUSTOMER_ID in table ANORDER
> [DAS RDB] - TableData.addData (53) : Adding column CUSTOMER_ID with value
> 2
> 241 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.TableData - Adding
> column CUSTOMER_ID with value 2
> [DAS RDB] - ResultSetRow.getAllTableData (180) :
> [org.apache.tuscany.das.rdb.graphbuilder.impl.TableData@19e11a1]
> 241 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetRow -
> [org.apache.tuscany.das.rdb.graphbuilder.impl.TableData@19e11a1]
> [DAS RDB] - MultiTableRegistry.get (57) : Looking for table ANORDER with
> PK [1]
> 251 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.MultiTableRegistry -
> Looking for table ANORDER with PK [1]
> [DAS RDB] - MultiTableRegistry.get (58) : Returning null
> 251 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.MultiTableRegistry -
> Returning null
> [DAS RDB] - DataObjectMaker.createAndAddDataObject (49) : Looking for
> Type for ANORDER
> 251 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.DataObjectMaker -
> Looking for Type for ANORDER
> [DAS RDB] - ResultSetProcessor.addRowToGraph (128) : Putting table
> ANORDER with PK [1] into registry
> 261 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetProcessor -
> Putting table ANORDER with PK [1] into registry
> [DAS RDB] - MappingWrapper.getTable (94) : Looking for table CUSTOMER
> 261 [main] DEBUG
> org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper - Looking
> for table CUSTOMER
> [DAS RDB] - MappingWrapper.getTable (94) : Looking for table ANORDER
> 261 [main] DEBUG
> org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper - Looking
> for table ANORDER
> [DAS RDB] - RowObjects.processRelationships (78) : Parent table: null
> 261 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.RowObjects - Parent
> table: null
> [DAS RDB] - RowObjects.processRelationships (79) : Child table:
> org.apache.tuscany.sdo.impl.DynamicDataObjectImpl@e7f6eb (eClass:
> org.apache.tuscany.sdo.impl.ClassImpl@103de90 (name: ANORDER)
> (instanceClassName: null) (abstract: false, interface: false))
> 261 [main] DEBUG
> org.apache.tuscany.das.rdb.graphbuilder.impl.RowObjects - Child
> table: org.apache.tuscany.sdo.impl.DynamicDataObjectImpl@e7f6eb
> (eClass: org.apache.tuscany.sdo.impl.ClassImpl@103de90 (name: ANORDER)
> (instanceClassName: null) (abstract: false, interface: false))
>
> -------------------------------------------------------------------------------------------------------------------
>
>
>
> On 4/4/07, Adriano Crestani <ad...@gmail.com> wrote:
> > Let me try to explain my doubt:
> >
> > Lets suppose I create a select command and execute it. The returned
> > ResultSet has an attribute that belongs to the table X and is a FK to
> the
> > table Y, but no Y attribute is contained in the ResultSet. The question
> is:
> > does the das create, and also populate, the SDO graph only with the
> metadata
> > and data contained in the ResultSet or the das also adds to the SDO
> graph
> > the referenced Y table and its attributes and keep doing it till there
> is no
> > more referenced table?
> >
> > I expect to be clear enough ; )
> >
> >
> > Adriano Crestani
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
> For additional commands, e-mail: tuscany-dev-help@ws.apache.org
>
>
Re: [DAS Java] created SDO graph doubt
Posted by Amita Vadhavkar <am...@gmail.com>.
Hi Adriano,
Let me show what I got so far: Below is the debug dump and the relevant portion
of the logic will be in ResultSetProcessor and ResultSetRow. Based on
it, it is seen
that the parent/s attributes and data is not added. Please let me know
if you are
looking for something more/different.
Regards,
Amita
-------------------------------------------------------------------------------------------------------------------
DAS RDB] - ConnectionImpl.prepareStatement (94) : Preparing Statement:
select ANORDER.ID, ANORDER.CUSTOMER_ID from CUSTOMER, ANORDER where
CUSTOMER.ID = ANORDER.CUSTOMER_ID
[DAS RDB] - ResultSetProcessor.<init> (55) :
org.apache.tuscany.das.rdb.graphbuilder.impl.GraphBuilderMetadata@63a721
230 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetProcessor -
org.apache.tuscany.das.rdb.graphbuilder.impl.GraphBuilderMetadata@63a721
[DAS RDB] - ResultSetRow.processRow (69) :
230 [main] DEBUG org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetRow -
[DAS RDB] - TableData.<init> (45) : Creating TableData for table ANORDER
241 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.TableData - Creating
TableData for table ANORDER
[DAS RDB] - ResultSetRow.processRow (76) : Adding column: ID Value:
1 Table: ANORDER
241 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetRow - Adding
column: ID Value: 1 Table: ANORDER
[DAS RDB] - MappingWrapper.getTableByTypeName (118) : Looking for
table by property: ANORDER
241 [main] DEBUG
org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper - Looking
for table by property: ANORDER
[DAS RDB] - TableData.addData (53) : Adding column ID with value 1
241 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.TableData - Adding
column ID with value 1
[DAS RDB] - ResultSetRow.processRow (76) : Adding column:
CUSTOMER_ID Value: 2 Table: ANORDER
241 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetRow - Adding
column: CUSTOMER_ID Value: 2 Table: ANORDER
[DAS RDB] - MappingWrapper.getTableByTypeName (118) : Looking for
table by property: ANORDER
241 [main] DEBUG
org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper - Looking
for table by property: ANORDER
[DAS RDB] - MappingWrapper.getColumn (336) : WARNING: Could not find
column CUSTOMER_ID in table ANORDER
241 [main] DEBUG
org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper - WARNING:
Could not find column CUSTOMER_ID in table ANORDER
[DAS RDB] - TableData.addData (53) : Adding column CUSTOMER_ID with value 2
241 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.TableData - Adding
column CUSTOMER_ID with value 2
[DAS RDB] - ResultSetRow.getAllTableData (180) :
[org.apache.tuscany.das.rdb.graphbuilder.impl.TableData@19e11a1]
241 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetRow -
[org.apache.tuscany.das.rdb.graphbuilder.impl.TableData@19e11a1]
[DAS RDB] - MultiTableRegistry.get (57) : Looking for table ANORDER with PK [1]
251 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.MultiTableRegistry -
Looking for table ANORDER with PK [1]
[DAS RDB] - MultiTableRegistry.get (58) : Returning null
251 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.MultiTableRegistry -
Returning null
[DAS RDB] - DataObjectMaker.createAndAddDataObject (49) : Looking for
Type for ANORDER
251 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.DataObjectMaker -
Looking for Type for ANORDER
[DAS RDB] - ResultSetProcessor.addRowToGraph (128) : Putting table
ANORDER with PK [1] into registry
261 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.ResultSetProcessor -
Putting table ANORDER with PK [1] into registry
[DAS RDB] - MappingWrapper.getTable (94) : Looking for table CUSTOMER
261 [main] DEBUG
org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper - Looking
for table CUSTOMER
[DAS RDB] - MappingWrapper.getTable (94) : Looking for table ANORDER
261 [main] DEBUG
org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper - Looking
for table ANORDER
[DAS RDB] - RowObjects.processRelationships (78) : Parent table: null
261 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.RowObjects - Parent
table: null
[DAS RDB] - RowObjects.processRelationships (79) : Child table:
org.apache.tuscany.sdo.impl.DynamicDataObjectImpl@e7f6eb (eClass:
org.apache.tuscany.sdo.impl.ClassImpl@103de90 (name: ANORDER)
(instanceClassName: null) (abstract: false, interface: false))
261 [main] DEBUG
org.apache.tuscany.das.rdb.graphbuilder.impl.RowObjects - Child
table: org.apache.tuscany.sdo.impl.DynamicDataObjectImpl@e7f6eb
(eClass: org.apache.tuscany.sdo.impl.ClassImpl@103de90 (name: ANORDER)
(instanceClassName: null) (abstract: false, interface: false))
-------------------------------------------------------------------------------------------------------------------
On 4/4/07, Adriano Crestani <ad...@gmail.com> wrote:
> Let me try to explain my doubt:
>
> Lets suppose I create a select command and execute it. The returned
> ResultSet has an attribute that belongs to the table X and is a FK to the
> table Y, but no Y attribute is contained in the ResultSet. The question is:
> does the das create, and also populate, the SDO graph only with the metadata
> and data contained in the ResultSet or the das also adds to the SDO graph
> the referenced Y table and its attributes and keep doing it till there is no
> more referenced table?
>
> I expect to be clear enough ; )
>
>
> Adriano Crestani
>
---------------------------------------------------------------------
To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
For additional commands, e-mail: tuscany-dev-help@ws.apache.org