OpProcFactory (Hive 1.2.2 API)

```
public final class OpProcFactory
extends PrunerOperatorFactory
```
Operator factory for partition pruning processing of operator graph We find all the filter operators that appear just beneath the table scan operators. We then pass the filter to the partition pruner to construct a pruner for that table alias and store a mapping from the table scan operator to that pruner. We call that pruner later during plan generation. Refactor: Move main logic to PrunerOperatorFactory. OpProcFactory extends it to reuse logic. Any other pruner can reuse it by creating a class extending from PrunerOperatorFactory. Only specific logic is in generatePredicate(..) which is in its own class like OpProcFactory.

Nested Classes
Modifier and Type	Class and Description
`static class`	`OpProcFactory.FilterPPR` Determines the partition pruner for the filter.

Methods
Modifier and Type	Method and Description
`static NodeProcessor`	`getFilterProc()`

public static NodeProcessor getFilterProc()

Class OpProcFactory