I currently maintain rfc function modules to be called via Java Connector for SAP. My current module returns a table of documents, where each line has some data and another table of items.
When introspecting this module via JCo 3.0, it does only show the top layer table, but not the one inside:
POSITIONS () (com.sap.conn.jco.JCoTable)
introspection errror
java.lang.IllegalStateException: Trying to access row values in a table
which does not have any rows yet
The inner table is defined. For performance purposes, I enabled the module to use basXML.
How can I enable JCo to work with nested structures? Or is this not possible?
In general this works. JCo is capable of dealing with nested structures and tables.
In this case your nested JCoTable simply seems to be empty, i.e. it has no rows.
On an empty table you cannot call any getter- or setter-method for a single field.
Simply check with JCoTable.isEmpty() or with JCoTable.getNumRows()>0 before using any getter-method. And make sure to append at least one row with JCoTable.appendRow() before using any setter-method on a JCoTable object.
Related
Also posted on super users:
I'm a spotfire novice trying to create a parameterized info link. Ultimate goal is to create a default template that may be customized to return specific rows in a very large table. I've not been able to cobble together enough information from online searches to get me from point A to Z.
Spotfire version is 7.11 on an Oracle 11.2 SE DB.
Currently I've got a date/time prompt in the info link that will be global to all users. What I need is to be able to further filter to 1 of 2 columns (one is real, the other a string) in order to minimize loading times. There are 17 other on-demand tables that are related to the main one. Limiting the initial query will greatly speed up performance.
In information designer for the information link, if I edit the SQL in the WHERE and explicitly define the value or string for the column, I get the rows I want. When I try to define it using an input parameter (?ParamName), I either get nothing when I reload or get asked to input a parameter "for testing".
Q1: In the document properties for the analysis, I've been adding in properties that I assume is supposed to get picked up by the query.
- What part do scripts play in passing this variable to the SQL?
- Do I just need to define a value for a property name or include a IronPython script? - If script is required, can I just define the parameter to pass?
Q2: In the info link SQL, what is the correct syntax for defining the parameter variable depending on the type (real v string)? If I use a string, I need to include LIKE in order to pick up the desired rows. If I use a real, is it possible to define it as a list of values?
Thanks in advance.
Though not exactly clear from your description, I think you should be able to accomplish your goals using the "Load on demand" dialog that is accessed either when you add your data table to your analysis, or subsequently using the Data Table Properties>Type of Data>Settings dialog.
Spotfire uses this dialog to dynamically modify your SQL. Thus, you do not need to explicitly include the LIKE statement in your SQL. Spotfire will add it in based on what you define in the On-Demand settings. For example, you could have an Input Field where you type a constraint that will be stored as a Document Property and then refer to that Document Property in your On-Demand settings to control the table loading.
We are using a jdbc:inbound-channel-adapter with a poller to select from a table. The requirement is to select rows with a timestamp within a specific range. That range must be updated each time the database is polled (so rows are not read twice). Originally I envisioned having a separate table to store a datetime, and use the adapter's update attribute to update this table. This value would then have been used in the SELECT statement defined in the query attribute, as part of the WHERE clause against the main table.
We have now been told that while we will have read access to the main table, we will not be given permission to add anything to the existing schema, or have write permissions. This rules out using a separate table in which to continually update the timestamp used by the main SQL query.
The option of defining in the query attribute some SpEL which would return a dynamically generated SELECT statement will also not work. This is because the SpEL will only be evaluated once when Spring loads.
Is there another way to dynamically update the SQL in the query attribute?
Otherwise, what is the correct strategy for this use case, where the SQL which is used by the adapter must change each time the database is polled?
Thanks
You can add a parameter source to the adapter and use queries like:
"SELECT * from FOO where KEY=:key"
See attribute select-sql-parameter-source.
You can write your own parameter source, but also see ExpressionEvaluatingSqlParameterSourceFactory.
I have a stored procedure that is run and returns a result set into a model (using EF 5).
As I'm looping through the result set, I simply want to get the name of the column in the model that is used to hold the data.
How can I achieve this?
Would it be something like below:
var myCustomers = DbContext.Database.SqlQuery<Customer>
("exec SelectCustomers").ToList();
foreach (Customer cust in myCustomers)
{
}
Displaying the value "myCustomers[0].Address1" during runtime will display the actual value inside that field, but how can I simply extract the column name?
If I try something like below, the index value is always -1 and I don't know what I'm missing. I've used it dozens of times.
int Idx = myCustomers[0].Address1.IndexOf(".").ToString();
"-1"
I don't think you can reliably do that. EF consists of 3 layers - object layer (also called O-Space - your types), conceptual layer (also called C-Space - a model in EDM terms) and store layer (also called S-Space which described the database). The mapping between O-Space and S-Space is more or less 1:1 - so a property on a class maps to an entity property in the OSpace model. However there are a few strategies of mapping C-Space to S-Space like Table Per Hierarchy (TPH), Table per Type (TPT), Table per Concrete type (TPC) and Entity Splitting (you can find more details here: http://blogs.msdn.com/b/adonet/archive/2010/10/25/inheritance-mapping-a-walkthrough-guide-for-beginners.aspx). It is also possible to use your own name for a property that will be different from the name of a corresponding column in the database. In the simplest cases property names will match column names but oftentimes it won't be the case. At runtime the information about mapping is stored types that are mostly internal and you cannot access them. The information about mapping is populated from the Msl artifact the describes mapping between C- and S- space. You could try parsing this artifact (it's an Xml file) but it's not an easy task if you need to support all different mapping strategies.
I do not know that the question is right? Please do not take it your mind if it is crazy. Actually I am working on xpages application. There I need to do two things, that I want to add the picklist functionality and binding the dynamic data like field_1,field_2,field_3, ... upto n depands on customer choice.I am using the composite data for both custom controls. I can remove the picklist control's composite data and also I can do it by passing the scope variables. But that takes more time than the composite data.
I did not get any error. But the binded documents is not saving.
Is it possible to import the CCs that are having composite Data?
Code for first CC:-
<xc:viewpicklist datasrc="view1" dialogID="dialog1" dialogWidth="700px" dialogTitle="Pick this field value!!!">
<xc:this.viewColumn>
<xp:value>0</xp:value>
<xp:value>1</xp:value>
<xp:value>2</xp:value>
</xc:this.viewColumn>
</xc:viewpicklist>
Code for Second CC:-
<xc:BOM_Partinfo BOM_Partinfo="#{document1}"
TNUM="field#{index+1}" Desc="Desc#{index+1}" quan="Ea#{index+1}"
exp="exp#{index+1}" cap="cap#{index+1}" total="price#{index+1}"
RD="RD#{index+1}" m="manufact#{index+1}"
m_n="manufactnum#{index+1}">
</xc:BOM_Partinfo>
You can read information that is set in the properties of a custom control if it was static in the calling page:
var x = getComponent("yourcomponentid");
x.getPropertyMap().get("parametername");
but you want to propagate a data source from the outer control to the inner control...
You need to plan carefully. If you hand over the data source, then your custom control is dependent on a fixed set of fields in the data source (that would be a parameter of type com.ibm.xsp.model.DocumentDataSource). This would violate the encapsulation principles. So I would recommend you actually hand over data bindings - the advantage: you are very flexible what to bind to (not only data sources, but also beans and scope variables would work then). The trick is you provide the binding name as you would statically type it in (e.g. "document1.subject" or "requestScope.bla" ). In your control you then do
${"#{compositeData.field1}"}
${"#{compositeData.field2}"}
You need one for each field.
You cannot send a document data source to a custom control using composite data parameters.
You can try and use this script instead
http://openntf.org/XSnippets.nsf/snippet.xsp?id=access-datasources-of-custom-controls
Define data source in XP/CC where you want those CCs. Define parameter "dataSourceName" for both CCs. Inside each of them use EL "requestScope[compositeData.dataSourceName].fieldName" everywhere you want to bind to datasource.
I have core data app with an entity OBSERVATION that has as one of its attributes DEALNAME.
I want to reference through Interface Builder or by making custom modifications to an NSArrayController a list of unique sorted dealnames so that I can use them in a pop-up.
I have attempted to use #distinctUnionOfSets (and #distinctUnionOfArrays) but am unable to locate the proper key sequence.
I can sort the ArrayController by providing a sort descriptor, but do not know how to eliminate duplicates.
Are the #distinct... keys the right methodology? It would seem to provide the easiest way to optimize the use of IB.
Is there a predicate form for removing duplicates?
Or do I need to use my custom controller to extract an NSSet of the specific dealnames, put them back in an array and sort it and reference the custom array from IB?
Any help would be appreciated. I am astounded that other have not tried to create a sorted-unique pop-up in tableviews.
You need to take a look at -[NSFetchRequest returnsDistinctResults]. That is the level you need to be handling the uniquing of data.
Although I do not have a definitive answer for you, I think there are two ways you can go about it.
The way you already started. You need to bind the contents array of the PopUp button, not just against the arrayController.arrangedObjects, but continue on the path and somehow filter only objects with distinct "DealName"s. This means - the arrayController presents ALL the entities (and may sort them for you) but the PopUp button will have its contents filter via some sophisticated binding to the array controller.
Make your filtering at the ArrayController level (as suggested in another answer here). Here it depends how you set up the array controller. If It is set up to use an "Entity" (vs. "Class") which means the array controller will fetch CoreData entities directly - you can modify its "Fetch" to only bring a subset of the "OBSERVATION" entities with distinct values of "DEALNAME". I don't know how to control WHICH entities are filtered out in this case. Otherwise, you can setup the arrayController to work with "Class" objects, and then you can fetch the entities yourself (in code) and populate the arrayController programmatically, with just the entities you like.
In the second option, the Popup button should be bound normally to the arrayController's arrangedObjects.