Property | Type | Meaning |
---|---|---|
Name | String | Specify a name for the object when you create it. Names can consist of virtually any alphanumeric character including the letters A through Z, a through z and the digits 0 through 9. They may also include the following
punctuation characters;
Names can only start with a letter or the underscore character and not with a number, hyphen or period. Names beginning with xml or any variant (for example XmL) are reserved by the XML standards specification. Further details of naming conventions and allowable characters can be found in the Extensible Markup Language (XML) specification that can be found on the World Wide Web Consortium (W3C) Web site. |
Type | Enumerated type | The Type property constrains the
type of data that can be present in the object. There are a limited number of types available directly from the drop-down selector. These are;
If you select (More...), this starts the Type Selection wizard. From this wizard you can select any of the available types. If you select (New Simple Type), this starts the New Simple Type wizard which allows you to create an Anonymous simple type that is based on an existing type. This can be created locally or globally. If you select (New Complex Type), this starts the New Complex Type wizard which allows you to create an Anonymous complex type which can be derived from an existing base type. This can be created locally or globally. For further information about these types, and examples of their use see the XML Schema Part 0: Primer which can be found on the World Wide Web Consortium (W3C) Web site. |
Namespace | Enumerated type | Namespaces are a simple method for qualifying element
and attribute names by associating them with namespaces identified by URI
references. If <no target namespace> is displayed, a namespace has not been set for this object. If the property is inactive, the message set has not been configured to support namespaces. Where the property is active, namespaces that are available for selection are displayed in the drop-down list. |
Property | Type | Meaning |
---|---|---|
Min Occurs | Integer | Specify the minimum number of times that the object can repeat. The default
is 1. If the value is set to 0, then the object is optional. With the exception of Max Occurs being set to -1, if a value is set for Min Occurs, it must be less than or equal to the value in Max Occurs. |
Max Occurs | Integer | Specify
the maximum number of times that the object can repeat. The default is 1. If this property is not set, then the object can not occur more than once. If this property is set to 0, it is interpreted as if the object does not exist in the message. It can also be set to -1 to indicate that the limit is unbounded and there is no maximum to the number of occurrences. |
Property | Type | Meaning |
---|---|---|
Default | Button and String | This property provides the default value for an element
or attribute. When writing a fixed-length portion of a message (CWF or fixed-length TDS) if the attribute or element is missing from the message tree, the default value is inserted into the bit stream in order to preserve the message structure. This property is not used by the message broker when parsing. Note that this behavior differs from the XML Schema specification. |
Fixed | Button and String | This property provides the fixed value for an element or attribute. If a Fixed value is set for an attribute or element and a message is received, if the attribute or element exists in the message, the data in that part of the message must match that held in this property. If the attribute or element does not exist in the message, the broker creates it and populates it with the value in this property. |
Nillable | Check box | Select this if you want the element to be able to be defined as null. This is distinct from being empty where there is no data in the element. |
Interpret Value As | Enumerated type | Specify if values stored within this object must be
interpreted as having significance for the parser and, if so, the type of
interpretation that must occur. The possible values for this property are:
Note: This property is only applicable when the type of the object is
derived from xsd:string.
|
Substitution Groups provide a means by which one element may be substituted for another in a message. The element which can be substituted is called the 'head' element, and the substitution group is the list of elements that may be used in its place. An element can be in at most one substitution group.
Property | Type | Meaning |
---|---|---|
Final | Enumerated type | You use this property to limit the set of elements which
may belong to its substitution group.
|
Block | Enumerated type | You use this property to limit the set of elements which
may be substituted for this element in a message. Select from:
|
Substitution Group | Enumerated type | Use this property to specify the name of a 'head' element. Setting this property indicates that this element is a member of the substitution group for the 'head' element. |
Abstract | Check box | Select this if you do not want the element to appear in the message, but require one of the members of its substitution group to appear in its place. |
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