Issue with union

RE: Issue with union

sauravk — Fri, 31 Aug 2018 11:38:54 GMT

This solution is also working . Thanks for that

RE: Issue with union

Hema — Thu, 30 Aug 2018 12:59:27 GMT

Hi Saurav,

local!subMAS_dataset: todatasubset(
{
local!subDataset,
a!pagingInfo(
startIndex: 1,
batchSize: - 1,
sort: {
{
field: "year",
ascending: false
}
}
)
}
)

The curly braces highlighted in red are not required as local!subDataset is already a dictionary/array. Also to define sort attribute, a!sortInfo() should be used.

Please refer https://docs.appian.com/suite/help/18.3/fnc_scripting_todatasubset.html for more info.

Hope it helps!!!

Thanks,

Hema

RE: Issue with union

sauravk — Thu, 30 Aug 2018 11:55:03 GMT

Thanks. But please share some bullet point why we followed this approach, what was the issue in my code.

RE: Issue with union

Siva — Thu, 30 Aug 2018 11:42:12 GMT

Hi Saurav,

Please use the below code , It will work for you.

load(
local!subDataset: {
{
id: 1,
year: "2017"
},
{
id: 2,
year: "2019"
}
},
local!subMAS_dataset: todatasubset(
local!subDataset,
a!pagingInfo(
1,
- 1,
a!sortInfo(
field: "year",
ascending: false
)
)
).data, /* Best practice to take the data from datasubset */

local!years: reject(
fn!isNull,
union(
index(
local!subMAS_dataset,
"year",
null
),
index(
local!subMAS_dataset,
"year",
null
)
)
),
local!years
)

Thanks
Siva Chimata

RE: Issue with union

Siva — Thu, 30 Aug 2018 11:41:55 GMT

Hi Saurav,

Please use the below code , It will work for you.

local!years: reject(
fn!isNull,
union(
index(
local!subMAS_dataset,
"year",
null
),
index(
local!subMAS_dataset,
"year",
null
)
)
),
local!years
)

Thanks
Siva Chimata

RE: Issue with union

sauravk — Thu, 30 Aug 2018 11:14:18 GMT

Thanks a lot for this. I was struggling a lot just to achieve this. It would be really nice if you share learning on this . What was the root cause and what we applied here.

RE: Issue with union

loknandann0001 — Thu, 30 Aug 2018 11:03:16 GMT

load(
local!subDataset:{{name:"a",year:"1962"},{name:"b",year:"1963"},{name:"c",year:"1964"},{name:"d",year:"1965"}},
local!subMAS_dataset: todatasubset(

arrayToPage:local!subDataset,
pagingConfiguration:a!pagingInfo(
startIndex: 1,
batchSize: - 1,
sort: a!sortInfo(

field: "year",
ascending: false

)
)

),
local!years: reject(
fn!isNull,
union(
index(local!subMAS_dataset.data,"year"),
index(local!subMAS_dataset.data,"year")
)
),
local!years

)

Try this code,
the output for this :
1965; 1964; 1963; 1962

RE: Issue with union

sauravk — Thu, 30 Aug 2018 11:00:09 GMT

not working local!years: reject(
fn!isNull,
union(
index(local!subMAS_dataset.data,"year"),
index(local!subMAS_dataset.data,"year")
)
)
In this i think so we need to pass index not field name. Anyways error is not coming but local!years having empty list

RE: Issue with union

sauravk — Thu, 30 Aug 2018 10:54:23 GMT

its year only , i just modified code. Actual code i cant share on common platform.

RE: Issue with union

Rahul Gundu — Thu, 30 Aug 2018 10:42:05 GMT

Can you post the whole code if possible? I think you are doing union for 'cycleYear' field Not 'year'. Ok, Can you do type cast to 'cycleYear' value and store that into local variable and do the union.
Please let know, if you still face any issue.

RE: Issue with union

loknandann0001 — Thu, 30 Aug 2018 10:36:33 GMT

Hi Saurav,

Please try the below code :
local!subMAS_dataset: todatasubset(

arrayToPage:local!subDataset,
pagingConfiguration:a!pagingInfo(
startIndex: 1,
batchSize: - 1,
sort: a!sortInfo(

field: "year",
ascending: false

)
)

),
local!years: reject(
fn!isNull,
union(
index(local!subMAS_dataset.data,"year"),
index(local!subMAS_dataset.data,"year")
)
)

I have removed the curly braces in paging Info.

Thanks
Nandan

RE: Issue with union

sauravk — Thu, 30 Aug 2018 10:32:30 GMT

Could not display interface. Please check definition and inputs.
Interface Definition: Expression evaluation error at function 'union' parameter 2 [line 101]: Invalid index: Cannot index property 'cycleYear' of type Text into type List of Variant

Same error

RE: Issue with union

Rahul Gundu — Thu, 30 Aug 2018 10:28:47 GMT

Hi Sauravk,

mentioning about non working code,
local!subMAS_dataset: todatasubset(....) . todatasubset(..) returns DataSubset, So local variable will be holding value of type Datasubset. If you want actual value. you need to parse till 'data' property like 'local!subMAS_dataset.data'.

Just change the below code to below In non working code.

local!years: reject(
fn!isNull,
union(
local!subMAS_dataset.data.year,
local!subMAS_dataset.data.year
)
)