Datatypes

From UG

Current revision as of 19:27, 13 February 2010

[edit] Intro

Datatypes are defined base on requirements, properties of the class of objects.

This encompasses "constraints". Normally system validates these.

In ZK there are separate widgets for some datatypes: "intbox", "decimalbox", etc.

! This could/should be defined often "before" the UI - this is a property of class of corresponding object. So in this case link should be provided instead of repeating definition.

When defining widgets there is a required attribute to be defined: datatype/format.

Common CT2 datatypes - see:

• #Numbers
• #Strings

[edit] Numbers

[edit] integer

Examples:

• 23
• 1000
• 0
• -7896

[edit] positive integer

• 23
• 1000
• 0

[edit] decimal

Also called (floating-point numbers)

Examples:

• 2.3
• 1.0
• 1.9083496
• 100865.08E23

See also precision

[edit] Strings

[edit] alpha

Letters A to Z.

[edit] alphanumeric

The alphanumeric character set consists of the numbers 0 to 9 and letters A to Z.

Examples:

• hgTF9087GggyYg
• book
• 897

[edit] unicode

Examples:

• อักษรไทย
• русский алфавит

[edit] ascii

Examples:

• jhg&$&^*&@dceUH!
• Hello!
• #234
• 12-34-98698690

http://en.wikipedia.org/wiki/ASCII

[edit] Other datatypes examples

Everything outside of common/standard is not a type really. It is a string of certain format/constraint.

Examples:

• Airline 3 Letter Numeric Code, possible value: 053
• Master Airway bill, possible value: 222-7824-5587

[edit] Dates and Time

[edit] CT2 date

This date must be in the following format:

<Day>-<Month(first 3 letters)>-<Year>

Example: 17-Jan-2010