org.springframework.data.gemfire.snapshot.filter

Class ComposableSnapshotFilter<K,V>

java.lang.Object

org.springframework.data.gemfire.snapshot.filter.ComposableSnapshotFilter<K,V>

All Implemented Interfaces:

Serializable, org.apache.geode.cache.snapshot.SnapshotFilter<K,V>

public class ComposableSnapshotFilter<K,V>
extends Object
implements org.apache.geode.cache.snapshot.SnapshotFilter<K,V>

The ComposableSnapshotFilter class is a GemFire SnapshotFilter implementation of the Composition design pattern allowing 2 or more SnapshotFilters to be combined by logical AND and OR operators acting as a single SnapshotFilter.

Since:

1.7.0

Author:

John Blum

See Also:

SnapshotFilter, Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	ComposableSnapshotFilter.Operator Operator is an enumeration of logical operators (AND, OR) used to compose SnapshotFilters into a boolean expression.

Method Summary

Modifier and Type	Method and Description
boolean	accept(Map.Entry<K,V> entry) Determines whether the following Map Entry is accepted by this composed SnapshotFilter implementation.
static <K,V> org.apache.geode.cache.snapshot.SnapshotFilter<K,V>	and(org.apache.geode.cache.snapshot.SnapshotFilter<K,V>... snapshotFilters) Composes the array of SnapshotFilters into a logical boolean expression using the AND Operator.
protected static <K,V> org.apache.geode.cache.snapshot.SnapshotFilter<K,V>	compose(ComposableSnapshotFilter.Operator operator, org.apache.geode.cache.snapshot.SnapshotFilter<K,V>... snapshotFilters) Composes the array of SnapshotFilters into a logical boolean expression using the specified Operator.
static <K,V> org.apache.geode.cache.snapshot.SnapshotFilter<K,V>	or(org.apache.geode.cache.snapshot.SnapshotFilter<K,V>... snapshotFilters) Composes the array of SnapshotFilters into a logical boolean expression using the OR Operator.

Methods inherited from class java.lang.Object

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

Method Detail

compose

protected static <K,V> org.apache.geode.cache.snapshot.SnapshotFilter<K,V> compose(ComposableSnapshotFilter.Operator operator,
                                                                                   org.apache.geode.cache.snapshot.SnapshotFilter<K,V>... snapshotFilters)

Composes the array of SnapshotFilters into a logical boolean expression using the specified Operator.

Type Parameters:

K - the class type of the SnapshotFilter key.

V - the class type of the SnapshotFilter value.

Parameters:

operator - the logical operator used to compose the SnapshotFilters.

snapshotFilters - the array of SnapshotFilters to compose into a logical boolean expression using the Operator.

Returns:

a SnapshotFilter implementation composed of the SnapshotFilters using the specified Operator.

See Also:

ComposableSnapshotFilter.Operator, SnapshotFilter

and

public static <K,V> org.apache.geode.cache.snapshot.SnapshotFilter<K,V> and(org.apache.geode.cache.snapshot.SnapshotFilter<K,V>... snapshotFilters)

Composes the array of SnapshotFilters into a logical boolean expression using the AND Operator.

Type Parameters:

K - the class type of the SnapshotFilter key.

V - the class type of the SnapshotFilter value.

Parameters:

snapshotFilters - the array of SnapshotFilters to compose into a logical boolean expression using the AND Operator.

Returns:

a SnapshotFilter implementation composed of the SnapshotFilters using the AND Operator.

See Also:

ComposableSnapshotFilter.Operator.AND, SnapshotFilter

or

public static <K,V> org.apache.geode.cache.snapshot.SnapshotFilter<K,V> or(org.apache.geode.cache.snapshot.SnapshotFilter<K,V>... snapshotFilters)

Composes the array of SnapshotFilters into a logical boolean expression using the OR Operator.

Type Parameters:

K - the class type of the SnapshotFilter key.

V - the class type of the SnapshotFilter value.

Parameters:

snapshotFilters - the array of SnapshotFilters to compose into a logical boolean expression using the OR Operator.

Returns:

a SnapshotFilter implementation composed of the SnapshotFilters using the OR Operator.

See Also:

ComposableSnapshotFilter.Operator.OR, SnapshotFilter

accept

public boolean accept(Map.Entry<K,V> entry)

Determines whether the following Map Entry is accepted by this composed SnapshotFilter implementation.

Specified by:

accept in interface org.apache.geode.cache.snapshot.SnapshotFilter<K,V>

Parameters:

entry - the Map.Entry to evaluate.

Returns:

a boolean value indicating whether this composed SnapshotFilter accepts the Map Entry.

See Also:

ComposableSnapshotFilter.Operator, SnapshotFilter.accept(Map.Entry), Map.Entry