org.apache.flink.table.connector.source.lookup.cache

Class DefaultLookupCache

java.lang.Object

org.apache.flink.table.connector.source.lookup.cache.DefaultLookupCache

All Implemented Interfaces:

Serializable, AutoCloseable, LookupCache

@PublicEvolving
public class DefaultLookupCache
extends Object
implements LookupCache

Default implementation of LookupCache.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DefaultLookupCache.Builder Builder for DefaultLookupCache.

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	equals(Object o)
static DefaultLookupCache	fromConfig(org.apache.flink.configuration.ReadableConfig config)
Collection<RowData>	getIfPresent(RowData key) Returns the value associated with key in this cache, or null if there is no cached value for key.
int	hashCode()
void	invalidate(RowData key) Discards any cached value for the specified key.
static DefaultLookupCache.Builder	newBuilder() Creates a builder for the cache.
void	open(org.apache.flink.metrics.groups.CacheMetricGroup metricGroup) Initialize the cache.
Collection<RowData>	put(RowData key, Collection<RowData> value) Associates the specified value rows with the specified key row in the cache.
long	size() Returns the number of key-value mappings in the cache.

Methods inherited from class java.lang.Object

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

Method Detail

newBuilder

public static DefaultLookupCache.Builder newBuilder()

Creates a builder for the cache.

fromConfig

public static DefaultLookupCache fromConfig(org.apache.flink.configuration.ReadableConfig config)

open

public void open(org.apache.flink.metrics.groups.CacheMetricGroup metricGroup)

Description copied from interface: LookupCache

Initialize the cache.

Specified by:

open in interface LookupCache

Parameters:

metricGroup - the metric group to register cache related metrics.

getIfPresent

@Nullable
public Collection<RowData> getIfPresent(RowData key)

Description copied from interface: LookupCache

Returns the value associated with key in this cache, or null if there is no cached value for key.

Specified by:

getIfPresent in interface LookupCache

put

public Collection<RowData> put(RowData key,
                               Collection<RowData> value)

Description copied from interface: LookupCache

Associates the specified value rows with the specified key row in the cache. If the cache previously contained value associated with the key, the old value is replaced by the specified value.

Specified by:

put in interface LookupCache

Parameters:

key - - key row with which the specified value is to be associated

value - – value rows to be associated with the specified key

Returns:

the previous value rows associated with key, or null if there was no mapping for key.

invalidate

public void invalidate(RowData key)

Description copied from interface: LookupCache

Discards any cached value for the specified key.

Specified by:

invalidate in interface LookupCache

size

public long size()

Description copied from interface: LookupCache

Returns the number of key-value mappings in the cache.

Specified by:

size in interface LookupCache

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Throws:

Exception

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object