Locator extraction types and inheritance

Each locator has an extraction type that is based on the type and amount of data it returns. Is the returned data a single field, multiple subfields, or a table. When overriding a locator by selecting a new Locator Method or when using the Copy Method feature it is necessary to stay within the same extraction type.

Locators with the following extraction types have the following restrictions for inheritance:

Single

Restrictions on inherited locators is minimal for these types of locators.

Group

Restrictions on inherited locators of this type mean that the inherited locator must have the same subfields as the parent locator. However, additional subfields are allowed and the order of subfields is not important.

Table

Restrictions on inherited locators of this type mean that the inherited locator must use the same table model as the parent.

There are some locators that have different extraction types depending on how they are configured. For example, you can configure a Named Entity Locator to return a table field or a single field. As a result, the Named Entity Locator can belong to either the table or simple extraction types. Similarly, the Script Locator can be part of the group or simple extraction types, the Standard Evaluator can be part of the simple or table extraction types.

See Locator method types for the extraction types for the various locator methods. See Evaluator method types for extraction types for the various evaluator methods.

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