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From Kumar <kumar9885035...@gmail.com>
Subject Re: How to define a raw sql in the datamap.xml file and use it through SQLTemplate
Date Fri, 23 Dec 2016 14:05:47 GMT
Hey
One more question. Can i use the same above mentioned query with
MappedSelect? returning DummyPositionRecord instead of DataRows?

Thanks!
Kumar.

On Fri, Dec 23, 2016 at 5:38 PM, <dollj@xsinet.co.za> wrote:

> Hi Kumar
>
> You have to include all the fields required by
> FakeTableDummyPosition.class, so your select field clause has to specify
> all these fields:
>
> buyer_account
> exch_tools_trade_num
> external_trade_oid
> port_num
>
> Regards
> Jurgen
>
>
> From: Kumar
> Sent: Friday, December 23, 2016 1:12 PM
> To: user@cayenne.apache.org
> Subject: Re: How to define a raw sql in the datamap.xml file and use it
> through SQLTemplate
>
> Hey
>
>
> One problem what i'm facing is if i say * in my select query it is working
> but not when i specify the column name. May be i'm wrong in specifying the
> col name?
> This is what i have done.
>
>
> <db-entity name="FAKE_TABLE_DUMMY_POSITION">
> <db-attribute name="buyer_account" type="VARCHAR" length="20"/>
> <db-attribute name="exch_tools_trade_num" type="VARCHAR" length="50"/>
> <db-attribute name="external_trade_oid" type="INTEGER" length="20"
> isPrimaryKey="true" isMandatory="true"/>
> <db-attribute name="port_num" type="INTEGER" length="20"/>
> </db-entity>
> <obj-entity name="FakeTableDummyPosition" className="FakeTableDummyPosition"
> readOnly="true" dbEntityName="FAKE_TABLE_DUMMY_POSITION">
> <obj-attribute name="buyerAccount" type="java.lang.String"
> db-attribute-path="buyer_account"/>
> <obj-attribute name="exchToolsTradeNum" type="java.lang.String"
> db-attribute-path="exch_tools_trade_num"/>
> <obj-attribute name="portNum" type="java.lang.Integer"
> db-attribute-path="port_num"/>
> </obj-entity>
>
>
> This is working:
> SQLTemplate temp = new SQLTemplate(FakeTableDummyPosition.class, "select
> * from external_trade et join exch_tools_trade ett on et.oid =
> ett.external_trade_oid where ett.external_trade_oid > 18853859");
>
>
>
> This is not WORKING:
> final SQLTemplate temp = new SQLTemplate(FakeTableDummyPosition.class,
> "select ett.buyer_account from external_trade et join exch_tools_trade ett
> on et.oid = ett.external_trade_oid where ett.external_trade_oid >
> 18853859");
>
>
>
> Also attached the Modeler generated files.
>
>
>
>
> Thanks,
> Kumar
>
> On Fri, Dec 23, 2016 at 1:45 PM, <dollj@xsinet.co.za> wrote:
>
>   Hi Kumar
>
>   Glad it worked :-)
>   I don't have any knowledge of Hibernate so I cannot say.
>   Maybe someone else on the list can comment ?
>
>   Regards
>   Jurgen
>
>   -----Original Message----- From: Kumar
>   Sent: Friday, December 23, 2016 8:12 AM
>   To: user@cayenne.apache.org
>   Subject: Re: How to define a raw sql in the datamap.xml file and use it
> through SQLTemplate
>
>   Hey,
>
>   I tried your solution and its working. Thanks again. I can save a few
> lines
>   of code now.
>
>   Can i take this as a equivalent to the below which i was using in
> Hibernate.
>
>   *sqlQueryToFetchPositions.setResultTransformer(
> Transformers.aliasToBean(com.tc.app.exchangemonitor.
> controller.DummyPosition.class));*
>
>
>   Thanks,
>   Kumar.
>
>   On Thu, Dec 22, 2016 at 1:23 PM, <dollj@xsinet.co.za> wrote:
>
>
>     Hi Kumar
>
>     You could do the following:
>
>     1. Create a DBEntity in the Modeler say FAKE_TABLE_DUMMY_POSITION with
> all
>     the fields that appear in your SQLTemplate's select field clause.
>
>     2. Then create the ObjEntity in the Modeler for DummyPositionRecord
> based
>     on the FAKE_TABLE_DUMMY_POSITION.
>     Mark DummyPositionRecord as Read-Only !
>
>     Then just specify DummyPositionRecord in your SQLTemplate as usual:
>     SQLTemplate  qry = new SQLTemplate( DummyPositionRecord.class, sql );
>
>     Note, you can't use DummyPositionRecord.class in a normal SelectQuery
> as
>     the DBEntity doesn't exist.
>
>     Remember to document your code ;-)
>
>     Regards
>     Jurgen
>
>
>
>     -----Original Message----- From: Kumar
>     Sent: Wednesday, December 21, 2016 6:42 PM
>     To: user@cayenne.apache.org
>     Subject: Re: How to define a raw sql in the datamap.xml file and use it
>     through SQLTemplate
>
>
>     Guys,
>
>     Let me refine my question and tell you the exact requirement.
>
>     I have an UI control (TableView) where i need to display records which
> are
>     fetched from DB. For the TableView UI control i need to tell the java
> class
>     from which it should pick the values for each column. So each
> properties
>     getter() will be bound to the TableColumn.
>
>     But now in my case I want values from different db tables, so i'm
> planning
>     to write a native sql  with required db columns in the select class.
>
>     But to bind to the TableView UI control, i need a java class, so i
> created
>     a dummy java pojo class. Eg:DummyPositionRecord.java and i will define
>     getters and setters for which i' have written the native SQL.
>
>     Note:DummyPositionRecord.java is not a cayenne supported persistent
> class.
>     I mean to say it is not auto generated by Modeler.
>
>     So my question is,
>     Is there a way where i can tell the native sql select query to return
>     DummyPositionRecord type, so each record will be an instance of
>     DummyPositionRecord.
>
>     Previously, I could achieve this in Hibernate by
>     sqlQueryToFetchPositions.setResultTransformer(Transformers.
>     aliasToBean(com.tc.app.exchangemonitor.controller.
> DummyPosition.class));
>
>     Is there anything similar to this in Cayenne?
>
>     If not i think i should go with DataRow. If so is there any easy way to
>     convert a DataRow into DummyPositionRecord instead of picking each
> property
>     from DataRow and create a DummyPositionRecord.
>
>     Thanks and Sorry for confusing you Guys.
>
>
>
>
>     On Wed, Dec 21, 2016 at 8:54 PM, John Huss <johnthuss@gmail.com>
> wrote:
>
>     You need to specify which ObjEntity this is supposed to create in the
>
>       DataMap query.
>
>
>       On Wed, Dec 21, 2016 at 9:22 AM Kumar <kumar9885035454@gmail.com>
> wrote:
>
>       > Hey
>       > Even with NamedQuery i face the same issue.
>       > *Exception in thread "main" org.apache.cayenne.
> CayenneRuntimeException:
>       > [v.4.0.M4.ce40fc0 Oct 26 2016 22:22:58] Set up Object entity or use
>       > rowFetchingQuery*
>       >
>       > final NamedQuery namedQuery = new
>       > NamedQuery("PositionWithoutBuyerAccount");
>       >
>       > final List<ExternalTrade> x =
>       >
>       > CayenneHelper.getCayenneServerRuntime().newContext().performQuery(
>       namedQuery);
>       >
>       >
>       > <query name="PositionWithoutBuyerAccount" type="SQLTemplate">
>       > <sql>
>       >
>       > <![CDATA[
>       > SELECT et.* FROM external_trade et, exch_tools_trade
>       > ett,external_trade_state ets WHERE (et.external_trade_system_oid
> IN > (1))
>       > AND (et.external_trade_source_oid in (1)) AND
>       (et.external_trade_status_oid
>       > IN (1, 2, 3, 4)) AND (et.external_trade_state_oid IN (1, 2, 3, 4))
> AND
>       > (ett.buyer_account NOT IN ('TC123')) AND (ett.creation_date >=
>       > ('2016-01-01')) AND (ett.creation_date <= ('2016-12-21')) AND NOT
> > EXISTS
>       > (SELECT 1 FROM exch_tools_trade ett1 JOIN external_trade et1 ON
> et1.oid
>       > =
>       > ett1.external_trade_oid  JOIN external_trade_state ets1 ON
>       > et1.external_trade_state_oid = ets1.oid WHERE ett.commodity =
>       > ett1.commodity AND ett.exch_tools_trade_num  = >
> ett1.exch_tools_trade_num
>       > AND ett.trading_period = ett1.trading_period AND ett.buyer_account
> =
>       > ett1.buyer_account AND
>       > convert(datetime,convert(varchar,ett.creation_date,109)) =
>       > convert(datetime,convert(varchar,ett1.creation_date,109)) AND
>       > ISNULL(ett.call_put,'NULL') = ISNULL(ett1.call_put,'NULL') AND
>       > ISNULL(ett.strike_price,0) = ISNULL(ett1.strike_price,0) AND
>       > (((ets1.external_trade_state_name = 'Update' or
>       > ets1.external_trade_state_name = 'Delete') AND
>       > (ets.external_trade_state_name = 'Add')) OR
> (ets1.external_trade_state_
>       name
>       > = 'Delete' AND ets.external_trade_state_name = 'Update'))) AND
>       > ets.external_trade_state_name != 'Delete'  AND et.oid =
>       > ett.external_trade_oid AND et.external_trade_state_oid = ets.oid
>       > ]]>
>       > </sql>
>       > </query>
>       >
>       > Thanks,
>       > Kumar
>       >
>       > On Wed, Dec 21, 2016 at 8:43 PM, John Huss <johnthuss@gmail.com>
> wrote:
>       >
>       > > I haven't used MappedQuery, which may be a better solution.  But
> here
>       is
>       > > the old-school way to do it.
>       > > http://cayenne.apache.org/docs/3.0/namedquery.html
>       > >
>       > > You don't have to fetch DataRows, but be aware that you can only
>       > > materialize one type of Entity at a time.  And for performance
> you
>       should
>       > > be sure to fetch ALL the columns of that entity - both of which
> it
>       looks
>       > > like you are already doing.
>       > >
>       > > John
>       > >
>       > >
>       > > On Wed, Dec 21, 2016 at 8:47 AM Kumar <kumar9885035454@gmail.com
> >
>       wrote:
>       > >
>       > > > I know setting the below property will solve the problem but i
> > > > don't
>       > want
>       > > > DataRows to be return instead i want my persistent entity type.
>       > > >
>       > > > <property name="cayenne.GenericSelectQuery.fetchingDataRows"
>       > > value="true"/>
>       > > >
>       > > > Thanks!
>       > > > Kumar
>       > > >
>       > > >
>       > >
>       >
>
>
>
>
>
>
>
>

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