IfField
The <IfField>
element makes operations conditional on the presence of a metadata field.
Using <IfField>
does not change the context (the current position in the document).
Attribute | Description |
---|---|
name
|
The name of an existing field. |
nameRegex
|
A regular expression to match the name of one or more existing fields. |
path
|
The path of an existing field. |
pathRegex
|
A regular expression to match the path of one or more existing fields. |
negate
|
Set this attribute to true to perform the child operations only when there are no matching fields. |
The following attributes filter the matching fields by their values:
Attribute | Description |
---|---|
containsRegex
|
The field value must contain a match to this regular expression. |
matches
|
The field value must match this value exactly. |
matchesRegex
|
The whole field value must match this regular expression. |
matchType
|
Specifies the conditions necessary for the child operations to be performed:
|
In the following example, the field "anotherField" is deleted, but only if the document contains a field named "myField" with the value "ERROR". The <IfField>
element does not change the context, so "anotherField" is deleted from the root of the document (it is not a subfield of "myField").
<FieldStandardization> <IfField name="myField" matches="ERROR"> <Field name="anotherField"> <Delete/> </Field> </IfField> </FieldStandardization>