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# XMLFullStructure

Set `XMLFullStructure` to `True` to enable the `WHEN` operator for the Query action Text parameter.

The `WHEN` operator allows you to return only those XML documents in which two fields with the same parent field contain specified terms or phrases. Setting `XMLFullStructure` to `True` ensures each occurrence of the same field name in an XML document is given a different field code so that each one can be uniquely identified.

If you perform a geographical search, a single XML document can contain multiple latitude and longitude pairs, as long as each pair has a unique parent tag. In such documents:

    FieldText=DIST*

Matches any of the pairs in the document.

    FieldText=BIASDIST*

Biases according to the closest pair to the center point.

    Sort=DIST*

Sorts according to the closest pair to the center point.

You can use the `DISTSPHERICAL` operator with the `WHEN` operator when you have set `XMLFullStructure` to `True`.

Notes

- Setting `XMLFullStructure` to `True` also ensures that IDOL Server treats multiple occurrences of the same field name in an IDX document uniquely.

- `XMLFullStructure` supports the `BEFORE` and `AFTER` operators in FieldText queries for IDX documents. The `BEFORE` and `AFTER` operators allow you to return only those XML or IDX documents in which two fields appear in the specified order. You cannot use the `WHEN` operator for IDX documents, because there are no parent fields in IDX documents.

  For example:

      FieldText=MATCH{Ford}:MAKE BEFORE MATCH{Ferrari}:MAKE

- When you set `XMLFullStructure` to `True`, text queries for exact phrases return only phrases that occur in the same instance of a field.

  For example, if an IDX document lists:

      #DREFIELD author="W.C. Henry"
      #DREFIELD author="James Joyce"

  The following query returns this document if you set `XMLFullStructure` to `False` in the IDOL Server configuration file.

      action=Query&Text="Henry James":author

  If you set `XMLFullStructure` to `True`, the document does not return.

- `XMLFullStructure` applies to XML documents that you submit in a query that uses the TextParse action parameter. For example, if you have an AgentBoolean rule that uses the `WHEN` operator, IDOL Server applies this rule correctly to XML in the Text parameter when you set TextParse to `True`.

Type: | Boolean
Default: | False
Required: | No
Configuration Section: | Server
Example: | `XMLFullStructure=False`
See Also: | Query action FieldText parameter Query action

Note: If you change this setting after you have indexed content into IDOL Server, you must reindex the content.

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