How to query on local data?

RE: How to query on local data?

Sudipta Biswas — Tue, 31 Jul 2018 06:07:44 GMT

Thank you all for helping me out. It's working fine now.

RE: How to query on local data?

Brazil Vibanco — Wed, 25 Jul 2018 07:08:55 GMT

You can also achive this using displayvalue() function. Is another alternative, I don't know if better performance, but I like it.

load(
  local!employee:{
    {id:23456,firstName:"xyz23456",lastName:"def"};
    {id:12345,firstName:"abc12345",lastName:"def"}
  },
  displayvalue(
    23456,
    local!employee.id,
    local!employee.firstName,
    null
  )
)

RE: How to query on local data?

shwetad7106 — Tue, 24 Jul 2018 08:51:55 GMT

Hi,

You can make use of wherecontains() and index() functions,

load(
local!employee:{
{employeeId:12345,firstname:"abc"},
{employeeId:1345,firstname:"ghj"},
{employeeId:12345,firstname:"xyz"}
},
local!indexes : wherecontains(12345,tointeger(local!employee.employeeId)), /*this will return the index of the row which has this employeeId.*/
local!data:index(local!employee,local!indexes,{}), /* this will return data at that indexes */
local!data
)

Try above code.

Thank you.

RE: How to query on local data?

Shubham Aware — Tue, 24 Jul 2018 08:51:53 GMT

Hello,

There are multiple ways by which you can retrieve data from local! variable like
1) filter() function
2) Use array function like whereContains, index

whereContains("12345",index(ri!Employee, "firstName"))
By this you will gate index of particular data in cdt.

Thanks,
Shubham

RE: How to query on local data?

nitesht9652 — Tue, 24 Jul 2018 07:25:50 GMT

Hi,

Please run the below code in expression rule:

load(
local!employee:{{id:23456,firstName:"xyz23456",lastName:"def"};{id:12345,firstName:"abc12345",lastName:"def"}},
local!result:a!forEach(items:local!employee,
expression: if((tointeger(fv!item.id)=12345),fv!item.firstName,{})),
local!result
)

It should return "abc12345" which is first name for the employee having id as 12345.

Thanks,
Nitesh

RE: How to query on local data?

Robert Shankin — Mon, 23 Jul 2018 15:18:19 GMT

Hi -

Perhaps this pattern will help:

index(pv!employees.firstName, wherecontains("Finance", pv!employees.department)) returns the first names of all employees with their department field set to Finance or an empty array if none have it set to Finance

In your case, you want change:

PV -> local,
"Finance" -> "12345",
.department -> .employeeId

RE: How to query on local data?

harrisont606 — Mon, 23 Jul 2018 11:37:24 GMT

Appian looping functions like filter can help you take care of this.

RE: How to query on local data?

chetany — Mon, 23 Jul 2018 11:36:33 GMT

You can use the filter() function.
First you need to create a rule which takes A .one Employee CDT as input B. the id/name to filter on.
This rule should return true if the EmployeeCDT.name is equal to given givenName or EmployeeCDT.id equal to id.
Example:

local!filteredEmployee: filter( rule!returnTrueIfEmployeeHasId( _, 12345) , ri!arrayOfEmployeeCDT ).

Then just access the name using local!filteredEmployee.name

Here the rule returnTrueIfEmployeeHasId is assumed to be created already.
It has some condition like this:
ri!cdtEmployee.id = ri!inputId

Note: you could extend this pattern and create child rules for each of the filters possible. (say filter by name, filter by id etc.)