io.cdap.cdap.api.dataset.module

Interface DatasetDefinitionRegistry

@Beta
public interface DatasetDefinitionRegistry

Registry of dataset definitions and other components in a Datasets System. The implementation of this interface doesn't have to be thread-safe.

Method Summary

Modifier and Type	Method and Description
void	add(DatasetDefinition def) Adds DatasetDefinition to the registry.
<T extends DatasetDefinition> T	get(String datasetTypeName) Gets DatasetDefinition previously added to the registry.
boolean	hasType(String datasetTypeName)

Method Detail

add

void add(DatasetDefinition def)

Adds DatasetDefinition to the registry. After it was added it is available thru get(String) method.

Parameters:

def - definition to add

Throws:

IllegalArgumentException - if registry already contains dataset type of the same name as given definition

get

<T extends DatasetDefinition> T get(String datasetTypeName)

Gets DatasetDefinition previously added to the registry.

Type Parameters:

T - type of the returned DatasetDefinition

Parameters:

datasetTypeName - dataset type name, should be same as DatasetDefinition.getName()

Returns:

instance of DatasetDefinition

Throws:

IllegalArgumentException - if registry does not contain dataset type of a given name

hasType

boolean hasType(String datasetTypeName)

Parameters:

datasetTypeName - name of the dataset type

Returns:

true if registry contains dataset type of the given name, false otherwise