Constraints Properties for a Variable

Property

Description

Min occurs

Specifies the minimum number of occurrences of the variable at run time.

This property is display-only.

Note:

The Min occurs property appears only for a variable in a document type with a Model type property value of Sequence, Choice, or All.

Max occurs

Specifies the maximum number of occurrences of the variable at run time. A value of “unbounded” indicates that the variable can appear an unlimited number of times.

This property is display-only.

Note:

The Max occurs property appears only for a variable in a document type with a Model type property value of Sequence, Choice, or All.

Required

Specifies whether or not the variable needs to exist at run time.

The Required property appears for variables in document types if one or more of the following are true:

The document type was created using a version of Integration Server prior to version 8.2.

The document type was created using Developer.

The Model type property of the document type is Unordered.

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True

The default value. Specifies that the variable must exist in the pipeline at run time.

False

Specifies that the existence of the variable is optional at run time.

Allow null

Specifies whether null is a valid value for this variable.

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True

The default value. Specifies that a null value will not result in a validation error at run time.

False

Specifies that a null value will cause a validation error at run time.

Allow unspecified fields

Specifies whether the document is open or closed. This property is enabled only if the variable is a document or document list.

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True

The default value. The document is considered open. At run time, fields that exist in the document but are not declared in the document field will not cause errors.

False

The document or document list is considered closed. At run time, fields that exist in the document but are not declared in the document field will be treated as errors.

Content type

Specifies the XML schema simple type that constrains the value of the String field. This property is enabled if the variable is a String, String list, or String table.

To view and edit the content constraint for a variable, click

and select one of the following:

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Content type

Select a content constraint from the drop-down menu that corresponds to a simple type built-in to XML Schema.

Browse

Use a simple type from an IS schema as the content constraint.

Customize

Customize a simple type by modifying the constraining facets.

Base constraints

View the constraining facet values set in the type definitions from which a simple type was derived.

Java wrapper type

Specifies the Java class of an Object field. This property is enabled if the variable is an Object or Object list.