MongoDB Connector 24.2

# IfAttribute

The `<IfAttribute>` element makes operations conditional on the presence of a metadata field attribute.

Using `<IfAttribute>` does not change the context (the current position in the document).

Attribute | Description
--- | ---
`name` | The name of an existing attribute.
`nameRegex` | A regular expression to match the name of one or more existing attributes.
`negate` | Set this attribute to `true` to perform the child operations only when there are no matching attributes.

The following attributes filter the matching attributes by their values:

Attribute | Description
--- | ---
`containsRegex` | The attribute value must contain a match to this regular expression.
`matches` | The attribute value must match this value exactly.
`matchesRegex` | The whole attribute value must match this regular expression.
`matchType` | Specifies the conditions necessary for the child operations to be performed: `all` - all attributes selected by `nameRegex` must have the specified value. `any` - one or more of the attributes selected by `nameRegex` must have the specified value. `none` - none of attributes selected by `nameRegex` must have the specified value.

In the following example, the field "myField" is deleted, but only if it has the attribute "expired" with the value "true". The `<IfAttribute>` element does not change the context, so it is the field that is deleted, not just the attribute.

    <FieldStandardization>
        <Field name="myField">
             <IfAttribute name="expired" matches="true">
                 <Delete/>
             </IfAttribute>
        </Field>
    </FieldStandardization>

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Version 24.2 | Last updated March 2024

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Product: IDOL MongoDB Connector 24.2

Topic Title: IfAttribute