org.apache.flink.cep.pattern

Class AndFilterFunction<T>

java.lang.Object

org.apache.flink.cep.pattern.AndFilterFunction<T>

Type Parameters:

T - Type of the element to filter

All Implemented Interfaces:

Serializable, FilterFunction<T>, Function

public class AndFilterFunction<T>
extends Object
implements FilterFunction<T>

A filter function which combines two filter functions with a logical and. Thus, the filter function only returns true, iff both filters return true.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AndFilterFunction(FilterFunction<T> left, FilterFunction<T> right)

Method Summary

Modifier and Type	Method and Description
boolean	filter(T value) The filter function that evaluates the predicate.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AndFilterFunction

public AndFilterFunction(FilterFunction<T> left,
                         FilterFunction<T> right)

Method Detail

filter

public boolean filter(T value)
               throws Exception

Description copied from interface: FilterFunction

The filter function that evaluates the predicate.

IMPORTANT: The system assumes that the function does not modify the elements on which the predicate is applied. Violating this assumption can lead to incorrect results.

Specified by:

filter in interface FilterFunction<T>

Parameters:

value - The value to be filtered.

Returns:

True for values that should be retained, false for values to be filtered out.

Throws:

Exception - This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.