# PetscObjectComposedDataGetScalarstar
retrieve scalar array data set with `PetscObjectComposedDataSetScalarstar()` attached to an object 
## Synopsis
```
#include "petsc/private/petscimpl.h"
PetscErrorCode PetscObjectComposedDataGetScalarstar(PetscObject obj,int id,PetscScalar *data,PetscBool  flag)
```
Not collective


## Input parameters

- ***obj -*** the object from which data is to be retrieved
- ***id -*** the identifier for the data



## Output parameters

- ***data -*** the data to be retrieved
- ***flag -*** `PETSC_TRUE` if the data item exists and is valid, `PETSC_FALSE` otherwise



## Notes
The 'data' and 'flag' variables are inlined, so they are not pointers.

The length of the array accessed must be known, it is not available through this API.




## See Also
 `PetscObjectComposedDataSetInt()`, `PetscObjectComposedDataSetReal()`, `PetscObjectComposedDataGetReal()`, `PetscObjectComposedDataSetIntstar()`,
`PetscObjectComposedDataSetIntstar()`, `PetscObjectComposedDataGetInt()`, `PetscObject`,
`PetscObjectCompose()`, `PetscObjectQuery()`, `PetscObjectComposedDataSetRealstar()`, `PetscObjectComposedDataSetScalarstar()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petsc/private/petscimpl.h.html#PetscObjectComposedDataGetScalarstar">include/petsc/private/petscimpl.h</A>


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