AX allows arrays to be defined, but while fetching information through the .NET Business Connector, it shows as a single field. E.g: Dimension is set by:
axRec.setField("Dimension[1]","A");
axRec.setField("Dimension[2]","B");
axRec.setField("Dimension[3]","C");
// and so on...
How do I know how many fields "Dimension" have?
AX supports a compile time function dimOf to return the count, but that is not available from .Net!
To rescue comes the DictField class:
X++ code:
DictField df = new DictField(tablenum(CustTable), fieldnum(CustTable, AccountNum));
if (df)
{
print strfmt("The arraySize is %1.", df.arraySize());
}
You can make a X++ utility function, then call that:
static int arraySize(str tableName, str fieldName)
{
DictField df = new DictField(tableName2Id(tableName), fieldName2Id(tableName2Id(tableName), fieldName)));
return df ? df.arraySize() : -1;
}
Related
I tried to count num of rows in grid in runtime with this code
FormRun caller;
FormDataSource fds;
QueryRun queryRun;
int64 rows;
fds = caller.dataSource();
query = fds.query();
queryRun = new QueryRun(query);
rows = SysQuery::countTotal(queryRun); //this returns -1587322268
rows = SysQuery::countLoops(queryRun); //this returs 54057
The last line of code is closest to what i need because there are 54057 lines but if i add filters it still returns 54057.
I want logic to get the number rows that grid has in the moment of calling the method.
Your query has more than one datasource.
The best way to explain your observation is to look at the implementation of countTotal and countLoops.
public client server static Integer countTotal(QueryRun _queryRun)
{
container c = SysQuery::countPrim(_queryRun.pack(false));
return conpeek(c,1);
}
public client server static Integer countLoops(QueryRun _queryRun)
{
container c = SysQuery::countPrim(_queryRun.pack(false));
return conpeek(c,2);
}
private server static container countPrim(container _queryPack)
{
...
if (countQuery.dataSourceCount() == 1)
qbds.addSelectionField(fieldnum(Common,RecId),SelectionField::Count);
countQueryRun = new QueryRun(countQuery);
while (countQueryRun.next())
{
common = countQueryRun.get(countQuery.dataSourceNo(1).table());
counter += common.RecId;
loops++;
}
return [counter,loops];
}
If your datasource contains one datasource it adds count(RecId).
countTotal returns the number of records.
countLoops returns 1.
Pretty fast, as fast as the SQL allows.
If your datasource contains more than one datasource it does not add count(RecId).
countTotal returns the sum of recIds (makes no sense).
countLoops returns the number of records.
Also countLoops is slow if there are many records as they are counted one by one.
If you have two datasources and want a fast count, you are on your own:
fds = caller.dataSource();
queryRun = new QueryRun(fds.queryRun().query());
queryRun.query().dataSourceNo(2).joinMode(JoinMode::ExistsJoin);
queryRun.query().dataSourceNo(1).clearFields();
queryRun.query().dataSourceNo(1).addSelectionField(fieldnum(Common,RecId),SelectionField::Count);
queryRun.next();
rows = queryRun.getNo(1).RecId;
The reason your count did not respect the filters was because you used datasource.query() rather than datasource.queryRun().query(). The former is the static query, the latter is the dynamic query with user filters included.
Update, found some old code with a more general approach:
static int tableCount(QueryRun _qr)
{
QueryRun qr;
Query q = new Query(_qr.query());
int dsN = _qr.query().dataSourceCount();
int ds;
for (ds = 2; ds <= dsN; ++ds)
{
if (q.dataSourceNo(ds).joinMode() == JoinMode::OuterJoin)
q.dataSourceNo(ds).enabled(false);
else if (q.dataSourceNo(ds).joinMode() == JoinMode::InnerJoin)
{
q.dataSourceNo(ds).joinMode(JoinMode::ExistsJoin);
q.dataSourceNo(ds).fields().clearFieldList();
}
}
q.dataSourceNo(1).fields().clearFieldList();
q.dataSourceNo(1).addSelectionField(fieldNum(Common,RecId), SelectionField::Count);
qr = new QueryRun(q);
qr.next();
return any2int(qr.getNo(1).RecId);
}
I'm trying to implement a table valued function (as a SQLite virtual table).
It's a function that would take a string and return a table with all the words of the string.
If I call it with literal values like below, it works fine.
SELECT word FROM splitstring("abc def ghi")
If, however, I call it with a column from another table it doesn't work:
SELECT a.Name, word FROM article a, splitstring(a.Text)
The xBestIndex method gets called all right, but right after that, I get an exception from the ExecuteReader method. The exception message is "xBestIndex malfunction". The xFilter method does not get called because of the exception.
My xBestIndex implementation is simple, it just marks the parameter so I can see it in xFilter:
public override SQLiteErrorCode BestIndex(SQLiteVirtualTable table, SQLiteIndex index)
{
index.Outputs.ConstraintUsages.ElementAt(0).argvIndex = 1;
index.Outputs.ConstraintUsages.ElementAt(0).omit = 1;
return SQLiteErrorCode.Ok;
}
Am I'm doing something wrong or is it impossible to pass non-literal parameters to table valued functions?
Found the issue! I was using constraints that had usable=0. The BestIndex method gets called multiple times by SQLite, the second time with a non-usable constraint.
Here is the fixed body of the BestIndex method.
public override SQLiteErrorCode BestIndex(SQLiteVirtualTable table, SQLiteIndex index)
{
if (index.Inputs.Constraints.Count() != 2)
throw new ArgumentException("The generate_series function requires two integer (long) parameters!");
if (index.Inputs.Constraints.All(c=>c.usable == 1))
{
index.Outputs.ConstraintUsages.ElementAt(0).argvIndex = 1;
index.Outputs.ConstraintUsages.ElementAt(0).omit = 1;
index.Outputs.ConstraintUsages.ElementAt(1).argvIndex = 2;
index.Outputs.ConstraintUsages.ElementAt(1).omit = 1;
}
else
{
index.Outputs.IndexNumber = -1;
index.Outputs.EstimatedCost = double.MaxValue;
}
return SQLiteErrorCode.Ok;
}
Now I check the usable flag. When BestIndex gets called with a constraint with usable=0 I skip it i.e. return a high estimated cost for that index so it doesn't get used.
I'm new to both protocol buffers and C++, so this may be a basic question, but I haven't had any luck finding answers. Basically, I want the functionality of a dictionary defined in my .proto file like an enum. I'm using the protocol buffer to send data, and I want to define units and their respective names. An enum would allow me to define the units, but I don't know how to map the human-readable strings to that.
As an example of what I mean, the .proto file might look something like:
message DataPack {
// obviously not valid, but something like this
dict UnitType {
KmPerHour = "km/h";
MiPerHour = "mph";
}
required int id = 1;
repeated DataPoint pt = 2;
message DataPoint {
required int id = 1;
required int value = 2;
optional UnitType theunit = 3;
}
}
and then have something like to create / handle messages:
// construct
DataPack pack;
pack->set_id(123);
DataPack::DataPoint pt = pack.add_point();
pt->set_id(456);
pt->set_value(789);
pt->set_unit(DataPack::UnitType::KmPerHour);
// read values
DataPack::UnitType theunit = pt.unit();
cout << theunit.name << endl; // print "km/h"
I could just define an enum with the unit names and write a function to map them to strings on the receiving end, but it would make more sense to have them defined in the same spot, and that solution seems too complicated (at least, for someone who has lately been spoiled by the conveniences of Python). Is there an easier way to accomplish this?
You could use custom options to associate a string with each enum member:
https://developers.google.com/protocol-buffers/docs/proto#options
It would look like this in the .proto:
extend google.protobuf.FieldOptions {
optional string name = 12345;
}
enum UnitType {
KmPerHour = 1 [(name) = "km/h"];
MiPerHour = 2 [(name) = "mph"];
}
Beware, though, that some third-party protobuf libraries don't understand these options.
In proto3, it's:
extend google.protobuf.EnumValueOptions {
string name = 12345;
}
enum UnitType {
KM_PER_HOUR = 0 [(name) = "km/h"];
MI_PER_HOUR = 1 [(name) = "mph"];
}
and to access it in Java:
UnitType.KM_PER_HOUR.getValueDescriptor().getOptions().getExtension(MyOuterClass.name);
I have a question about the Dynamics CRM 4.0 Webservice. I've been using it to get records from CRM into ASP.NET. After the request and the casting, the values of the columns (for instance for a contact) can be accessed through;
BusinessEntity be = getBusinessEntity(service, crmGuid, type, colnames);
contact tmp = (contact)be;
Response.Write("firstname: " + tmp.firstname + "<BR>");
Response.Write("lastname: " + tmp.lastname+ "<BR>");
I have an array of strings which identify which columns should be retrieved from CRM (colnames), for instance in this case {"firstname", "lastname"}.
But colnames can become quite big (and may not be hardcoded), so I don't want to go through them one by one. Is there a way to use something like
for(int i = 0; i < colnames.length; i++)
{
Response.write(colnames[i] + ": " + tmp.colnames[i] + "<BR>");
}
If I do this now I get an error that colnames is not a field of tmp.
Any ideas?
Not using BusinessEntity (unless you use reflection). DynamicEntity is enumerable by types deriving from Property. You'll have to do something like (I did this from memory, so might not compile)...
for(int i = 0; i < colnames.length; i++)
{
string colName = colnames[i];
foreach(Property prop in tmp)
{
if (prop.name != colName)
continue;
if (prop is StringProperty)
{
var strProp = prop as StringProperty;
Response.Write(String.Format("{0}: {1}<BR />", colName, strProp.Value));
}
else if (prop is LookupProperty)
{
...
}
... for each type deriving from Property
}
}
Reply to Note 1 (length):
Could you give me an example of what you're using. If you are only looking at the base types (Property) then you won't be able to see the value property - you'll need to convert to the appropriate type (StringProperty, etc).
In my example tmp is a DynamicEntity (it defines GetEnumerator which returns an array of Property). The other way to access the properties of a DynamicEntity is using the string indexer. For tmp:
string firstname = (string)tmp["firstname"];
Note that if you use this method, you get the Values (string, CrmNumber, Lookup) and not the whole property (StringProperty, CrmNumberProperty, etc).
Does that answer your question? Also, I recommend using the SDK assemblies and not the web references. They're much easier to use. The SDK download has a list of helper classes if you choose to use the web references, however. Search "Helper" in the SDK.
I have a form in Axapta/Dynamics Ax (EmplTable) which has two data sources (EmplTable and HRMVirtualNetworkTable) where the second data source (HRMVirtualNetworkTable) is linked to the first on with "Delayed" link type.
Is there a way to set an filter on the records, based on the second data source, without having to change the link type to "InnerJoin"?
You could use "Outer join" instead of "Delayed" then change the join mode programmaticly when there is search for fields on HRMVirtualNetworkTable.
Add this method to class SysQuery:
static void updateJoinMode(QueryBuildDataSource qds)
{
Counter r;
if (qds)
{
qds.joinMode(JoinMode::OuterJoin);
for (r = 1; r <= qds.rangeCount(); r++)
{
if (qds.range(r).value() && qds.range(r).status() == RangeStatus::Open)
{
qds.joinMode(JoinMode::InnerJoin);
break;
}
}
}
}
In the executeQuery() on the EmplTable datasource:
public void executeQuery()
{;
SysQuery::updateJoinMode(this.queryRun() ? this.queryRun().query().dataSourceTable(tableNum(HRMVirtualNetworkTable)) : this.query().dataSourceTable(tableNum(HRMVirtualNetworkTable)));
super();
}
Sometimes this.queryRun() return null so use this.query() instead.
Update:
Note that the above is not relevant for AX 2012 and later, where you can use query filters in outer joins. See How to Use the QueryFilter Class with Outer Joins.
You can do it programmaticaly by joining QueryBuildDataSource or by extended filter (Alt+F3, Right click on datasorce, 1:n and find sev\condary DS)