Package org.djutils.data

Class Column<T>

java.lang.Object

org.djutils.data.Column<T>

Type Parameters:

T - value type

All Implemented Interfaces:

Serializable, org.djutils.base.Identifiable

public class Column<T>
extends Object
implements org.djutils.base.Identifiable, Serializable

Column identifier and descriptor.

Copyright (c) 2020-2025 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
BSD-style license. See DJUTILS License.

Author:

Alexander Verbraeck, Peter Knoppers, Wouter Schakel

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Column(String id, String description, Class<T> valueType)	Make a new column for a table with an id, description, type.
Column(String id, String description, Class<T> valueType, String unit)	Make a new column for a table with an id, description, type, and unit.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
String	getDescription()	Returns the column description.
String	getId()
String	getUnit()	Returns the unit of the column.
Class<T>	getValueType()	Returns the type of the values in the column.
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

Column

public Column(String id,
 String description,
 Class<T> valueType,
 String unit)

Make a new column for a table with an id, description, type, and unit.

Parameters:

id - id of the column

description - description of the column

valueType - value type of the column

unit - unit, may be null

Column

public Column(String id,
 String description,
 Class<T> valueType)

Make a new column for a table with an id, description, type. The unit is blank (null).

Parameters:

id - id of the column

description - description of the column

valueType - value type of the column

Method Details

getId

public String getId()

Specified by:

getId in interface org.djutils.base.Identifiable

getDescription

public String getDescription()

Returns the column description.

Returns:

column description

getValueType

public Class<T> getValueType()

Returns the type of the values in the column.

Returns:

type of the values in the column

getUnit

public String getUnit()

Returns the unit of the column. Data is written an read using this unit.

Returns:

unit of the column

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object