com.cinchapi.concourse.data.transform

Class DataColumn<F,T>

Object

ForwardingObject

ForwardingMap<KT,VT>

DataColumn<F,T>

All Implemented Interfaces:

Column<T>, Map<Long,T>

public abstract class DataColumn<F,T>
extends ForwardingMap<KT,VT>
implements Column<T>

A Row based on a TObject result set, that transforms values on the fly.

Nested Class Summary

Nested classes/interfaces inherited from class ForwardingMap

ForwardingMap.StandardEntrySet, ForwardingMap.StandardKeySet, ForwardingMap.StandardValues

Nested classes/interfaces inherited from interface Map

Map.Entry<K,V>

Method Summary

Modifier and Type	Method and Description
protected Supplier<Map<Long,T>>	$prettyMapSupplier() Return a Supplier of a Map instance that outputs a pretty string.
protected Map<KT,VT>	delegate()
boolean	isEmpty()
static <T> DataColumn<Set<TObject>,Set<T>>	multiValued(String key, Map<Long,Set<TObject>> data) Return a DataColumn that contains multi-valued cells of TObject values that are converted to their Java equivalents.
static <T> DataColumn<TObject,T>	singleValued(String key, Map<Long,TObject> data) Return a DataColumn that contains single-valued cells of TObject values that are converted to their Java equivalents.
int	size()
String	toString()
protected Long	transformKey(Long key) Transform the key to the appropriate type.
protected abstract VT	transformValue(VF value) Transform the value to the appropriate type.

Methods inherited from class ForwardingMap

clear, containsKey, containsValue, entrySet, equals, get, hashCode, keySet, put, putAll, remove, standardClear, standardContainsKey, standardContainsValue, standardEquals, standardHashCode, standardIsEmpty, standardPutAll, standardRemove, standardToString, values

Methods inherited from class Object

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

Methods inherited from interface Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Method Detail

multiValued

public static <T> DataColumn<Set<TObject>,Set<T>> multiValued(String key,
                                                              Map<Long,Set<TObject>> data)

Return a DataColumn that contains multi-valued cells of TObject values that are converted to their Java equivalents.

Parameters:

key -

data -

Returns:

the DataColumn

singleValued

public static <T> DataColumn<TObject,T> singleValued(String key,
                                                     Map<Long,TObject> data)

Return a DataColumn that contains single-valued cells of TObject values that are converted to their Java equivalents.

Parameters:

key -

data -

Returns:

the DataColumn

$prettyMapSupplier

protected Supplier<Map<Long,T>> $prettyMapSupplier()

Return a Supplier of a Map instance that outputs a pretty string.

Returns:

an empty Map

See Also:

com.cinchapi.concourse.util.PrettyLinkedHashMap}, com.cinchapi.concourse.util.PrettyLinkedTableMap}

transformKey

protected Long transformKey(Long key)

Transform the key to the appropriate type.

Returns:

the transformed key

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<KT,VT>

Overrides:

isEmpty in class ForwardingMap<KT,VT>

size

public int size()

Specified by:

size in interface Map<KT,VT>

Overrides:

size in class ForwardingMap<KT,VT>

toString

public final String toString()

Overrides:

toString in class ForwardingObject

delegate

protected Map<KT,VT> delegate()

Overrides:

delegate in class ForwardingMap<KT,VT>

transformValue

protected abstract VT transformValue(VF value)

Transform the value to the appropriate type.

Parameters:

value -

Returns:

the transformed value.