Backend (Nemo Project 0.4 API)

Type Parameters:

Plan - the physical execution plan to compile the DAG into.

All Known Implementing Classes:

NemoBackend
```
@DefaultImplementation(NemoBackend.class)
public interface Backend<Plan>
```
Interface for backend components.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  Plan compile(IRDAG dag)
  Compiles a DAG to a physical execution plan.

- Method Detail
  - compile
```
Plan compile(IRDAG dag)
      throws java.lang.Exception
```
    Compiles a DAG to a physical execution plan. The method should not modify the IRDAG in any way (i.e., should be idempotent).
    
    Parameters:
    
    dag - the DAG to compile.
    
    Returns:
    
    the execution plan generated.
    
    Throws:
    
    java.lang.Exception - Exception on the way.