Field Types


At the most basic level, there are two categories of Verity fields, distinguished by whether the information in the the field types for each category is collection- or document-wide.

Constant Fields

Constant fields are populated with values that remain constant throughout the collection.

Value
Description
constant
A constant field, defined by a constant keyword, assumes a constant value for every document in the collection. Of the constant field types listed, this field type functions most efficiently.
autoval
An automatic value field, defined by an autoval keyword, assumes a constant value for every document in a collection.

NOTE: This field type is used internally by the Verity engine and should only be used at the direction of Verity technical support.

worm
A worm field, defined in a worm keyword, assumes a constant value for every document in a collection. The name worm stands for Write Once Read Many, which describes how this field behaves.

NOTE: This field type is used internally by the Verity engine and should only be used at the direction of Verity technical support.

Variable Fields

Variable fields are populated with variable values parsed from the original document.

Value
Description
fixwidth
A fixed-width field, defined in a style file by the fixwidth field type, is populated by values that do not change in length.
varwidth
A variable-width field, defined by the varwidth field type, is populated by text information of variable lengths (such as author or title).
dispatch
A variable-width field, defined by the dispatch field type, represents free-form text that will be searched and presented for viewing.




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