MongoDB Connector 24.2

# 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: `all` - all fields selected by name or path must have the specified value. `any` - one or more of the fields selected by name or path must have the specified value. `none` - none of fields selected by name or path must have the specified value.

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>

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Version 24.2 | Last updated March 2024

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Product: IDOL MongoDB Connector 24.2

Topic Title: IfField