OccurrenceDatasetIndexService (GBIF Common :: API 2.0.1 API)

```
public interface OccurrenceDatasetIndexService
```
Supports the listing of datasets having occurrence records.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`SortedMap<UUID,Long>`	`occurrenceDatasetsForCountry(Country country)`	This provides a map of occurrence dataset keys to the number of records matching the given country.
`SortedMap<UUID,Long>`	`occurrenceDatasetsForNubKey(int taxonKey)`	This provides a map of occurrence dataset keys to the number of records matching the given nub key.

- Method Detail
  - occurrenceDatasetsForCountry
```
SortedMap<UUID,Long> occurrenceDatasetsForCountry(Country country)
```
    This provides a map of occurrence dataset keys to the number of records matching the given country. Datasets which do not have content are not included (e.g. no zero-values will exist). That is to say the count represents the number of records in the dataset that are interpreted as the provided country, and not the total count of records in the dataset.
    
    Parameters:
    
    country - to filter occurrence datasets by
    
    Returns:
    
    a map of dataset keys to counts sorted by count descending
  - occurrenceDatasetsForNubKey
```
SortedMap<UUID,Long> occurrenceDatasetsForNubKey(int taxonKey)
```
    This provides a map of occurrence dataset keys to the number of records matching the given nub key. Datasets which do not have content are not included (e.g. no zero-values will exist). That is to say the count represents the number of records in the dataset that are interpreted as the provided taxon (or any subordinate taxon), and not the total count of records in the dataset. E.g. a dataset of 1 million records covering everything, might report it has 300k records of birds (Aves); those records might themselves have more specific identifications (such as the species).
    
    Parameters:
    
    taxonKey - to filter occurrence datasets by
    
    Returns:
    
    a map of dataset keys to counts sorted by count descending