org.jtrim2.concurrent.query

Interface DataTransformer<DataType>

Type Parameters:

DataType - the type of the object to be transformed (and also the type of the resulting object)

public interface DataTransformer<DataType>

Defines a transformation of objects. The transformation does not need to be reversible.

Note that in case this transformation is slow (e.g.: waits for external events, like reading a file), consider using AsyncDataTransformer or simply an AsyncDataQuery for transformation.

Thread safety

Implementations of this interface are required to be safe to be used by multiple threads concurrently.

Synchronization transparency

Implementations of this interface are not required to be synchronization transparent.

See Also:

DataConverter

Method Summary

Modifier and Type	Method and Description
DataType	transform(DataType data) Transforms the data as defined by the implementation.

Method Detail

transform

DataType transform(DataType data)

Transforms the data as defined by the implementation. Note that the transformation might not be reversible.

Parameters:

data - the object to be transformed. This argument can be null if the transformation supports converting null values.

Returns:

the transformed data as defined by the implementation. This method may or may not returns null, depending on the implementation.