org.whaka.data

Class Column<T>

java.lang.Object

org.whaka.data.Column<T>

public final class Column<T>
extends java.lang.Object

Class represents a column of data and to be used with the Columns.

Each column is identified by an instance of the ColumnKey with the same type and contains a collection of 'data'. Column doesn't perform any assertion or validation of the data, it just holds it.

Note: class doesn't override default hash-code and equals functionality. Each column is immutable and unique "by instance" so they can be compared by links.

Field Summary

Fields

Modifier and Type	Field and Description
java.util.List<T>	data
ColumnKey<T>	key

Constructor Summary

Constructors

Constructor and Description
Column(ColumnKey<T> key, java.util.Collection<T> data) If specified collection is null - result column will contain empty list as data.
Column(ColumnKey<T> key, T... data) Equal to Column(ColumnKey, Collection) with specified data wrapped into Arrays.asList(Object...)

Method Summary

Modifier and Type	Method and Description
static <A> Column<A>	create(java.lang.Class<A> type, A... data)
static <A> Column<A>	create(java.lang.Class<A> type, java.util.Collection<A> data)
java.util.List<T>	getData()
ColumnKey<T>	getKey()
java.lang.Class<T>	getType() Equal to #getKey().getType()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

key

public final ColumnKey<T> key

data

public final java.util.List<T> data

Constructor Detail

Column

@SafeVarargs
public Column(ColumnKey<T> key,
                            T... data)

Equal to Column(ColumnKey, Collection) with specified data wrapped into Arrays.asList(Object...)

Column

public Column(ColumnKey<T> key,
              java.util.Collection<T> data)

If specified collection is null - result column will contain empty list as data.

Throws:

java.lang.NullPointerException - if specified key is null

Method Detail

create

@SafeVarargs
public static <A> Column<A> create(java.lang.Class<A> type,
                                                 A... data)

create

public static <A> Column<A> create(java.lang.Class<A> type,
                                   java.util.Collection<A> data)

getType

public java.lang.Class<T> getType()

Equal to #getKey().getType()

getKey

public ColumnKey<T> getKey()

getData

public java.util.List<T> getData()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object