HOPEX Power Studio (EN) : Customizing the Metamodel : Managing the Metamodel : Metamodel Extensions and Modifications : Concepts
   
Concepts
Metamodel definition commands concern:
• MetaClasses (or object types)
• links possible between these MetaClasses (called MetaAssociations)
• the two MetaAssociationEnds of each of these MetaAssociations
• MetaAttributes (characteristics).
Object comments or texts are assimilated in MetaAttributes.
 
Concept
Syntax
MetaClass (or object type)
metaclass
MetaAssociation (or link)
MetaAssociation
MetaAssociationEnd
MetaAssociationEnd
MetaAssociationType (or link type)
MetaAssociationType
MetaAttribute (or characteristic)
MetaAttribute
MetaAttributeGroup (or group of MetaAttributes)
MetaAttributeGroup
MetaAttributeValue (or value of MetaAttribute)
MetaAttributeValue
Concept names
The name of a concept is unique, ie. the name for a MetaClass, MetaAssociation, MetaAttribute or text must be used only once.
Names of MetaClasses with standard naming rule contain maximum 255 characters.
Concerning MetaClasses with namespace, the local name is limited to 140 characters, while the complete name is limited to 255 characters.
*For more information on namespaces, see "Managing Namespaces".
Name of a concept must begin with a letter (A to Z). The following characters are authorized for use in concept names:
 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
a b c d e f g h i j k l m n o p q r s t u v w x y z
à á â ã ä å ç é è ë ê ì í î ï ñ ò ó ô ö ù ú û ü ÿ ý
0 1 2 3 4 5 6 7 8 9
* ( ) / = + % ? $ _ & €
, ; - :
*Hiragana, Katakana and Kanji characters are accepted for object names in the Japanese language.
You cannot use “& , ; - : ” as the first character. There can be spaces in the name, except as first and last character.
*Unlike the other characters, the ampersand (&) is not controlled as the first character:
• it can be used in an object name.
• it should not be used in the name of a MetaClass, MetaAssociation, MetaAssociationEnd or MetaAttribute.
Technical concepts other than repository core concepts, (MetaClass, MetaAssociation and MetaAttribute) have names beginning with an underscore (_).
*It is impossible to define extensions with names beginning with characters "_" or "$".
*It is possible to modify the list of characters (see "Restricting the names of object types"). Note that this may create problems when executing queries or descriptors.
Note that you cannot use a name already in use. You must attach a prefix to your extension names. This avoids conflicts that might occur later when the standard metamodel is upgraded. For example, if you create a metamodel extension called "Table" for MEGA Process and later install HOPEX Database Builder, a conflict will occur.
Metamodel diagram
 
All of these MetaClasses have the following attributes:
• Name
• Absolute Identifier
• Authorization
• Creation Date
• Modification Date
• Creator, Modifier
• Creator Name
• Modifier Name
• Authorization Level
• Creation Version
• Modification Version
• Comment and History
Vocabulary used
To conform to MOF vocabulary, HOPEX has modified the terminology of its concepts.
Correspondence between versions 5.2 and 5.3
 
Old Name
New Name
Object Type (or Segment)
metaclass
Link
MetaAssociation
Leg
MetaAssociationEnd
LinkType
MetaAssociationType
Attribute
MetaAttribute
InterfaceDef
MetaAttributeGroup
AttributeValue
MetaAttributeValue
Correspondence between versions 6.1 and 6.1 SP1
Modifying names of attributes
 
Old Name
New Name
_AbstractionLevel
MetaLayer
_AtFormat
MetaAttribute Type
_AtLength
MetaAttribute Length
_AtExternalFormat
MetaAttribute Format
_IdAbsTextFormat
MetaText Format
_IdAbsSubstitutedAttribute
Substituted MetaAttribute
_ScanMajorType
Minor to major behavior
_ScanMinorType
Major to minor behavior
DefaultAnsiValue
Default Internal Value
Changing values of the MetaLayer attribute (formerly _AbstractionLevel)
 
Old Name
New Name
MetaData
Meta-MetaModel (MOF)
Data
Metamodel
Modifying values of the MetaAttribute Type attribute (formerly _AtFormat)
 
Old Name
New Name
Alphanumeric
String
Bool
Boolean
Short
Short
Long
Long
Date
DateTime
Text
VarChar
Binary
VarBinary
QCQ
Binary
HexaLong
Double
DoubleFloat
Float