Re: Error with simple example
Oi Luciano, obrigado pela ajuda. However the TM here thinks the SDO/DAS at Tuscany it's not mature enough to use in this project (it's a big project following mil standards) so I'm afraid it's not now that I'll have the chance to work with it. Too bad, i really appreciate the design of SDO and i truly believe that it'll become a standard for data access. At least we're going to proceed with some cutting edge technology also, RAP/OSGi/EasyBeans, if we can put that to work too... Um abraço de Portugal (a propósito, a minha mulher é de BH). Thanks all. 2007/6/5, Luciano Resende [EMAIL PROTECTED]: Hey Antonio Let me try to give you some help, and also point you to more DAS documentation. DAS User guide is available at [1] and a test case that exercise some similar things to what you want to do is available at [2] So, if you set the proper XPath index to [1], does it help ? If you think the problem is with the meta data (I don't have a MS SQL Server to try), maybe you could try looking at testSimulateFullOuterJoinRelationshipModification at the followign test case [3] and the DAS config used on the test case, where necessary metadata information is defined [4]. More information on resultset shape definition available at [5] Please let me know if this helps, if you have any more details that could help identify the iissue please let me know. [1] http://incubator.apache.org/tuscany/rdb-das-user-guide.html [2] https://svn.apache.org/repos/asf/incubator/tuscany/java/das/rdb/src/test/java/org/apache/tuscany/das/rdb/test/CrudWithChangeHistory.java [3] https://svn.apache.org/repos/asf/incubator/tuscany/java/das/rdb/src/test/java/org/apache/tuscany/das/rdb/test/RelationshipTests.java [4] https://svn.apache.org/repos/asf/incubator/tuscany/java/das/rdb/src/test/resources/companyMappingWithResultDescriptor.xml [5] http://incubator.apache.org/tuscany/explicit-resultset-shape-definition.html On 6/5/07, António Mota [EMAIL PROTECTED] wrote: I also try the examples using a config.xml file (http://incubator.apache.org/tuscany/starting-with-das.html) but i get Feature 'Command' not found. or Feature 'Table' not found. if i remove the Commands... 2007/6/5, António Mota [EMAIL PROTECTED]: Hi Frank: Thanks for your help here. However, besides that error that i corrected, the problem still arises. I look into ((Property)root.getType().getProperties().get(0)).getName() and that returns a empty string . But there is no problem with the DB, because a simple test PreparedStatement sql = connection.prepareStatement(select * from PERSON); ResultSet rst = sql.executeQuery(); return the correct result in rst. Can you give me some more pointers? I'm using now jTDS to connect to a SQLServer, could be a problem of the driver not returning Metadata? I used also the MS jdbc drivers but that caused another problem, the first i described. I'm going to try with Sybase as soon as i can because the production bd will be sysbase, but shouldn't this work with any db? I have until the end of the day to prove my point in favor of Tuscany, as tomorrow we must choose the technology, so any help will be greatly apreciated. Many thanks. 2007/6/5, Frank Budinsky [EMAIL PROTECTED]: One thing that's certainly wrong is Person[0] because an XPath index must be = 1. See section 12 of the SDO spec: http://osoa.org/download/attachments/36/Java-SDO-Spec-v2.1.0-FINAL.pdf?version=1 Note that the code that you said returned what you want is using a property number (i.e., 0): List l = (List)root.getList(0); To see what the name of this property (number 0) is you can call: ((Property)root.getType().getProperties().get(0)).getName(); Whatever name that returns is the name of the property you should be able to use in the getDataObject() call: Person or PERSON or whatever, in your example. I'd suggest looking at the SDO spec, or some of the examples, to get a better understanding of how SDO works. Frank. António Mota [EMAIL PROTECTED] wrote on 06/04/2007 06:55:03 PM: One last note. If i test with List l = (List)root.getList(0); DataObject d = (DataObject)l.get(0); String name = d.get(0); returns the correct value, what i expected that DataObject cust = root.getDataObject(Person[0]); String name = cust.getString(LASTNAME); will return. Is the problem with the jTDS driver not returning Metadata? I don't know what to do now... 2007/6/4, António Mota [EMAIL PROTECTED]: Hi: It seems this error was a feature of MS sqlserver driver... I changed it to jTDS and it works now. BUT... now i hav a error on the following line (typical...) DataObject root = readCustomers.executeQuery(); --- now works DataObject cust =
Re: Error with simple example
I also try the examples using a config.xml file (http://incubator.apache.org/tuscany/starting-with-das.html) but i get Feature 'Command' not found. or Feature 'Table' not found. if i remove the Commands... 2007/6/5, António Mota [EMAIL PROTECTED]: Hi Frank: Thanks for your help here. However, besides that error that i corrected, the problem still arises. I look into ((Property)root.getType().getProperties().get(0)).getName() and that returns a empty string . But there is no problem with the DB, because a simple test PreparedStatement sql = connection.prepareStatement(select * from PERSON); ResultSet rst = sql.executeQuery(); return the correct result in rst. Can you give me some more pointers? I'm using now jTDS to connect to a SQLServer, could be a problem of the driver not returning Metadata? I used also the MS jdbc drivers but that caused another problem, the first i described. I'm going to try with Sybase as soon as i can because the production bd will be sysbase, but shouldn't this work with any db? I have until the end of the day to prove my point in favor of Tuscany, as tomorrow we must choose the technology, so any help will be greatly apreciated. Many thanks. 2007/6/5, Frank Budinsky [EMAIL PROTECTED]: One thing that's certainly wrong is Person[0] because an XPath index must be = 1. See section 12 of the SDO spec: http://osoa.org/download/attachments/36/Java-SDO-Spec-v2.1.0-FINAL.pdf?version=1 Note that the code that you said returned what you want is using a property number (i.e., 0): List l = (List)root.getList(0); To see what the name of this property (number 0) is you can call: ((Property)root.getType().getProperties().get(0)).getName(); Whatever name that returns is the name of the property you should be able to use in the getDataObject() call: Person or PERSON or whatever, in your example. I'd suggest looking at the SDO spec, or some of the examples, to get a better understanding of how SDO works. Frank. António Mota [EMAIL PROTECTED] wrote on 06/04/2007 06:55:03 PM: One last note. If i test with List l = (List)root.getList(0); DataObject d = (DataObject)l.get(0); String name = d.get(0); returns the correct value, what i expected that DataObject cust = root.getDataObject(Person[0]); String name = cust.getString(LASTNAME); will return. Is the problem with the jTDS driver not returning Metadata? I don't know what to do now... 2007/6/4, António Mota [EMAIL PROTECTED]: Hi: It seems this error was a feature of MS sqlserver driver... I changed it to jTDS and it works now. BUT... now i hav a error on the following line (typical...) DataObject root = readCustomers.executeQuery(); --- now works DataObject cust = root.getDataObject(PERSON[0]); gives error!!! and the error is Class 'DataGraphRoot' does not have a feature named 'PERSON' If i try DataObject cust = root.getDataObject(0); gives org.eclipse.emf.ecore.util.EcoreEList$Dynamic cannot be cast to commonj.sdo.DataObject With DataObject cust = root.getDataObject(1); i got java.lang.IndexOutOfBoundsException So what's wrong now? For a simple test case this is working great :( Thanks all. 2007/6/4, António Mota [EMAIL PROTECTED]: Hi again: My first try with SDo wasn't encoraging. This very simple example das = DASImpl.FACTORY.createDAS(getConnection()); Command readCustomers = das.createCommand(select * from PERSON); DataObject root = readCustomers.executeQuery(); gives a error on this last line. The connection is ok because the same sql statement works using jdbc directly. The error is as follows: Exception in thread main java.lang.AbstractMethodError: com.microsoft.jdbc.sqlserver.SQLServerConnection. prepareStatement(Ljava/lang/String;I)Ljava/sql/PreparedStatement; at org.apache.tuscany.das.rdb.impl.ConnectionImpl. prepareStatement(ConnectionImpl.java:98) at org.apache.tuscany.das.rdb.impl.Statement. getPreparedStatement(Statement.java:199) at org.apache.tuscany.das.rdb.impl.Statement. executeQuery(Statement.java:53) at org.apache.tuscany.das.rdb.impl.ReadCommandImpl. executeQuery(ReadCommandImpl.java:61) Help, anyone? -- Melhores cumprimentos / Best regards António Santos Mota -- Melhores cumprimentos / Best regards António Santos Mota -- Melhores cumprimentos / Best regards António Santos Mota - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For
Re: Error with simple example
Hey Antonio Let me try to give you some help, and also point you to more DAS documentation. DAS User guide is available at [1] and a test case that exercise some similar things to what you want to do is available at [2] So, if you set the proper XPath index to [1], does it help ? If you think the problem is with the meta data (I don't have a MS SQL Server to try), maybe you could try looking at testSimulateFullOuterJoinRelationshipModification at the followign test case [3] and the DAS config used on the test case, where necessary metadata information is defined [4]. More information on resultset shape definition available at [5] Please let me know if this helps, if you have any more details that could help identify the iissue please let me know. [1] http://incubator.apache.org/tuscany/rdb-das-user-guide.html [2] https://svn.apache.org/repos/asf/incubator/tuscany/java/das/rdb/src/test/java/org/apache/tuscany/das/rdb/test/CrudWithChangeHistory.java [3] https://svn.apache.org/repos/asf/incubator/tuscany/java/das/rdb/src/test/java/org/apache/tuscany/das/rdb/test/RelationshipTests.java [4] https://svn.apache.org/repos/asf/incubator/tuscany/java/das/rdb/src/test/resources/companyMappingWithResultDescriptor.xml [5] http://incubator.apache.org/tuscany/explicit-resultset-shape-definition.html On 6/5/07, António Mota [EMAIL PROTECTED] wrote: I also try the examples using a config.xml file (http://incubator.apache.org/tuscany/starting-with-das.html) but i get Feature 'Command' not found. or Feature 'Table' not found. if i remove the Commands... 2007/6/5, António Mota [EMAIL PROTECTED]: Hi Frank: Thanks for your help here. However, besides that error that i corrected, the problem still arises. I look into ((Property)root.getType().getProperties().get(0)).getName() and that returns a empty string . But there is no problem with the DB, because a simple test PreparedStatement sql = connection.prepareStatement(select * from PERSON); ResultSet rst = sql.executeQuery(); return the correct result in rst. Can you give me some more pointers? I'm using now jTDS to connect to a SQLServer, could be a problem of the driver not returning Metadata? I used also the MS jdbc drivers but that caused another problem, the first i described. I'm going to try with Sybase as soon as i can because the production bd will be sysbase, but shouldn't this work with any db? I have until the end of the day to prove my point in favor of Tuscany, as tomorrow we must choose the technology, so any help will be greatly apreciated. Many thanks. 2007/6/5, Frank Budinsky [EMAIL PROTECTED]: One thing that's certainly wrong is Person[0] because an XPath index must be = 1. See section 12 of the SDO spec: http://osoa.org/download/attachments/36/Java-SDO-Spec-v2.1.0-FINAL.pdf?version=1 Note that the code that you said returned what you want is using a property number (i.e., 0): List l = (List)root.getList(0); To see what the name of this property (number 0) is you can call: ((Property)root.getType().getProperties().get(0)).getName(); Whatever name that returns is the name of the property you should be able to use in the getDataObject() call: Person or PERSON or whatever, in your example. I'd suggest looking at the SDO spec, or some of the examples, to get a better understanding of how SDO works. Frank. António Mota [EMAIL PROTECTED] wrote on 06/04/2007 06:55:03 PM: One last note. If i test with List l = (List)root.getList(0); DataObject d = (DataObject)l.get(0); String name = d.get(0); returns the correct value, what i expected that DataObject cust = root.getDataObject(Person[0]); String name = cust.getString(LASTNAME); will return. Is the problem with the jTDS driver not returning Metadata? I don't know what to do now... 2007/6/4, António Mota [EMAIL PROTECTED]: Hi: It seems this error was a feature of MS sqlserver driver... I changed it to jTDS and it works now. BUT... now i hav a error on the following line (typical...) DataObject root = readCustomers.executeQuery(); --- now works DataObject cust = root.getDataObject(PERSON[0]); gives error!!! and the error is Class 'DataGraphRoot' does not have a feature named 'PERSON' If i try DataObject cust = root.getDataObject(0); gives org.eclipse.emf.ecore.util.EcoreEList$Dynamic cannot be cast to commonj.sdo.DataObject With DataObject cust = root.getDataObject(1); i got java.lang.IndexOutOfBoundsException So what's wrong now? For a simple test case this is working great :( Thanks all. 2007/6/4, António Mota [EMAIL PROTECTED]: Hi again: My first try with SDo wasn't encoraging. This very simple example
Error with simple example
Hi again: My first try with SDo wasn't encoraging. This very simple example das = DASImpl.FACTORY.createDAS(getConnection()); Command readCustomers = das.createCommand(select * from PERSON); DataObject root = readCustomers.executeQuery(); gives a error on this last line. The connection is ok because the same sql statement works using jdbc directly. The error is as follows: Exception in thread main java.lang.AbstractMethodError: com.microsoft.jdbc.sqlserver.SQLServerConnection.prepareStatement(Ljava/lang/String;I)Ljava/sql/PreparedStatement; at org.apache.tuscany.das.rdb.impl.ConnectionImpl.prepareStatement(ConnectionImpl.java:98) at org.apache.tuscany.das.rdb.impl.Statement.getPreparedStatement(Statement.java:199) at org.apache.tuscany.das.rdb.impl.Statement.executeQuery(Statement.java:53) at org.apache.tuscany.das.rdb.impl.ReadCommandImpl.executeQuery(ReadCommandImpl.java:61) Help, anyone? -- Melhores cumprimentos / Best regards António Santos Mota - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Error with simple example
One thing that's certainly wrong is Person[0] because an XPath index must be = 1. See section 12 of the SDO spec: http://osoa.org/download/attachments/36/Java-SDO-Spec-v2.1.0-FINAL.pdf?version=1 Note that the code that you said returned what you want is using a property number (i.e., 0): List l = (List)root.getList(0); To see what the name of this property (number 0) is you can call: ((Property)root.getType().getProperties().get(0)).getName(); Whatever name that returns is the name of the property you should be able to use in the getDataObject() call: Person or PERSON or whatever, in your example. I'd suggest looking at the SDO spec, or some of the examples, to get a better understanding of how SDO works. Frank. António Mota [EMAIL PROTECTED] wrote on 06/04/2007 06:55:03 PM: One last note. If i test with List l = (List)root.getList(0); DataObject d = (DataObject)l.get(0); String name = d.get(0); returns the correct value, what i expected that DataObject cust = root.getDataObject(Person[0]); String name = cust.getString(LASTNAME); will return. Is the problem with the jTDS driver not returning Metadata? I don't know what to do now... 2007/6/4, António Mota [EMAIL PROTECTED]: Hi: It seems this error was a feature of MS sqlserver driver... I changed it to jTDS and it works now. BUT... now i hav a error on the following line (typical...) DataObject root = readCustomers.executeQuery(); --- now works DataObject cust = root.getDataObject(PERSON[0]); gives error!!! and the error is Class 'DataGraphRoot' does not have a feature named 'PERSON' If i try DataObject cust = root.getDataObject(0); gives org.eclipse.emf.ecore.util.EcoreEList$Dynamic cannot be cast to commonj.sdo.DataObject With DataObject cust = root.getDataObject(1); i got java.lang.IndexOutOfBoundsException So what's wrong now? For a simple test case this is working great :( Thanks all. 2007/6/4, António Mota [EMAIL PROTECTED]: Hi again: My first try with SDo wasn't encoraging. This very simple example das = DASImpl.FACTORY.createDAS(getConnection()); Command readCustomers = das.createCommand(select * from PERSON); DataObject root = readCustomers.executeQuery(); gives a error on this last line. The connection is ok because the same sql statement works using jdbc directly. The error is as follows: Exception in thread main java.lang.AbstractMethodError: com.microsoft.jdbc.sqlserver.SQLServerConnection. prepareStatement(Ljava/lang/String;I)Ljava/sql/PreparedStatement; at org.apache.tuscany.das.rdb.impl.ConnectionImpl. prepareStatement(ConnectionImpl.java:98) at org.apache.tuscany.das.rdb.impl.Statement. getPreparedStatement(Statement.java:199) at org.apache.tuscany.das.rdb.impl.Statement. executeQuery(Statement.java:53) at org.apache.tuscany.das.rdb.impl.ReadCommandImpl. executeQuery(ReadCommandImpl.java:61) Help, anyone? -- Melhores cumprimentos / Best regards António Santos Mota -- Melhores cumprimentos / Best regards António Santos Mota -- Melhores cumprimentos / Best regards António Santos Mota - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
