org.apache.paimon.data

Class GenericMap

java.lang.Object

org.apache.paimon.data.GenericMap

All Implemented Interfaces:

Serializable, InternalMap

@Public
public final class GenericMap
extends Object
implements InternalMap, Serializable

An internal data structure representing data of MapType or MultisetType.

GenericMap is a generic implementation of InternalMap which wraps regular Java maps.

Note: All keys and values of this data structure must be internal data structures. All keys must be of the same type; same for values. See InternalRow for more information about internal data structures.

Both keys and values can contain null for representing nullability.

Since:

0.4.0

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
GenericMap(Map<?,?> map) Creates an instance of GenericMap using the given Java map.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
Object	get(Object key) Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.
int	hashCode()
InternalArray	keyArray() Returns an array view of the keys contained in this map.
int	size() Returns the number of key-value mappings in this map.
InternalArray	valueArray() Returns an array view of the values contained in this map.

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericMap

public GenericMap(Map<?,?> map)

Creates an instance of GenericMap using the given Java map.

Note: All keys and values of the map must be internal data structures.

Method Detail

get

public Object get(Object key)

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key. The returned value is in internal data structure.

size

public int size()

Description copied from interface: InternalMap

Returns the number of key-value mappings in this map.

Specified by:

size in interface InternalMap

keyArray

public InternalArray keyArray()

Description copied from interface: InternalMap

Returns an array view of the keys contained in this map.

A key-value pair has the same index in the key array and value array.

Specified by:

keyArray in interface InternalMap

valueArray

public InternalArray valueArray()

Description copied from interface: InternalMap

Returns an array view of the values contained in this map.

A key-value pair has the same index in the key array and value array.

Specified by:

valueArray in interface InternalMap

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object