FilterCompat (Apache Parquet Column 1.7.0 API)

```
public class FilterCompat
extends Object
```
Parquet currently has two ways to specify a filter for dropping records at read time. The first way, that only supports filtering records during record assembly, is found in org.apache.parquet.filter. The new API (found in filter2) supports also filtering entire rowgroups of records without reading them at all. This class defines a common interface that both of these filters share, FilterCompat.Filter. A Filter can be either an UnboundRecordFilter from the old API, or a FilterPredicate from the new API, or a sentinel no-op filter. Having this common interface simplifies passing a filter through the read path of parquet's codebase.

Nested Classes
Modifier and Type	Class and Description
`static interface`	`FilterCompat.Filter`
`static class`	`FilterCompat.FilterPredicateCompat`
`static class`	`FilterCompat.NoOpFilter`
`static class`	`FilterCompat.UnboundRecordFilterCompat`
`static interface`	`FilterCompat.Visitor<T>` Anyone wanting to use a `FilterCompat.Filter` need only implement this interface, per the visitor pattern.

Fields
Modifier and Type	Field and Description
`static FilterCompat.Filter`	`NOOP`

Constructors
Constructor and Description
`FilterCompat()`

Methods
Modifier and Type	Method and Description
`static FilterCompat.Filter`	`get(FilterPredicate filterPredicate)` Given a FilterPredicate, return a Filter that wraps it.
`static FilterCompat.Filter`	`get(FilterPredicate filterPredicate, UnboundRecordFilter unboundRecordFilter)` Given either a FilterPredicate or the class of an UnboundRecordFilter, or neither (but not both) return a Filter that wraps whichever was provided.
`static FilterCompat.Filter`	`get(UnboundRecordFilter unboundRecordFilter)` Given an UnboundRecordFilter, return a Filter that wraps it.

Class FilterCompat