FilterChain (venice API)

java.lang.Object
- com.linkedin.venice.hadoop.FilterChain<INPUT_VALUE>

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable
```
public class FilterChain<INPUT_VALUE>
extends java.lang.Object
implements java.io.Closeable
```
The FilterChain class takes a list of AbstractVeniceFilter to assemble a filter chain to manage the life cycles' of filters and perform filtering based on the order of filters. If a record has been filtered by a predecessor, then it won't be passed to latter part of the filter chain.

Constructor Summary

Constructors
Constructor Description

FilterChain()

FilterChain(AbstractVeniceFilter<INPUT_VALUE>... filters)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`add(AbstractVeniceFilter<INPUT_VALUE> filter)`
`boolean`	`apply(INPUT_VALUE value)`	This function passes the value through the filter chain to determine if the value can be filtered out or not.
`void`	`close()`
`boolean`	`isEmpty()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - FilterChain
```
public FilterChain()
```
  - FilterChain
```
public FilterChain(AbstractVeniceFilter<INPUT_VALUE>... filters)
```
- Method Detail
  - isEmpty
```
public boolean isEmpty()
```
  - add
```
public void add(AbstractVeniceFilter<INPUT_VALUE> filter)
```
  - apply
```
public boolean apply(INPUT_VALUE value)
```
    This function passes the value through the filter chain to determine if the value can be filtered out or not.
    
    Parameters:
    
    value -
    
    Returns:
    
    true if the value should be filtered out by this filter or its successor, otherwise false.
  - close
```
public void close()
           throws java.io.IOException
```
    Specified by:
    
    close in interface java.lang.AutoCloseable
    
    Specified by:
    
    close in interface java.io.Closeable
    
    Throws:
    
    java.io.IOException