Struct Validate

pub struct Validate {
    pub datatype: Option<Datatype>,
    pub method: Option<Method>,
    pub list_range: Option<ListRange>,
}

Validation rules for a DataForms Field.

Fields

datatype: Option<Datatype>

The ‘datatype’ attribute specifies the datatype. This attribute is OPTIONAL, and defaults to “xs:string”. It MUST meet one of the following conditions:

• Start with “xs:”, and be one of the “built-in” datatypes defined in XML Schema Part 2
• Start with a prefix registered with the XMPP Registrar
• Start with “x:”, and specify a user-defined datatype.

Note that while “x:” allows for ad-hoc definitions, its use is NOT RECOMMENDED.

method: Option<Method>

The validation method. If no validation method is specified, form processors MUST assume <basic/> validation. The <validate/> element SHOULD include one of the above validation method elements, and MUST NOT include more than one.

Any validation method applied to a field of type “list-multi”, “list-single”, or “text-multi” (other than <basic/>) MUST imply the same behavior as <open/>, with the additional constraints defined by that method.

https://xmpp.org/extensions/xep-0122.html#usecases-validation

list_range: Option<ListRange>

For “list-multi”, validation can indicate (via the <list-range/> element) that a minimum and maximum number of options should be selected and/or entered. This selection range MAY be combined with the other methods to provide more flexibility. The <list-range/> element SHOULD be included only when the <field/> is of type “list-multi” and SHOULD be ignored otherwise.

The <list-range/> element SHOULD possess either a ‘min’ or ‘max’ attribute, and MAY possess both. If neither attribute is included, the processor MUST assume that there are no selection constraints.

https://xmpp.org/extensions/xep-0122.html#usecases-ranges

Trait Implementations

impl AsXml for Validate

type ItemIter<'xso_proc_as_xml_iter_lifetime> = ValidateAsXmlIterator<'xso_proc_as_xml_iter_lifetime>

The iterator type.

fn as_xml_iter(&self) -> Result<Self::ItemIter<'_>, Error>

Return an iterator which emits the contents of the struct or enum as serialisable Item items.

fn as_xml_dyn_iter<'x>( &'x self, ) -> Result<Box<dyn Iterator<Item = Result<Item<'x>, Error>> + 'x>, Error>

Return the same iterator as as_xml_iter, but boxed to erase the concrete iterator type.

impl Clone for Validate

fn clone(&self) -> Validate

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Validate

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<&Validate> for Element

fn from(other: &Validate) -> Self

Converts to this type from the input type.

impl From<Validate> for Element

fn from(other: Validate) -> Self

Converts to this type from the input type.

impl FromXml for Validate

type Builder = ValidateFromXmlBuilder

A builder type used to construct the element.

fn from_events( name: QName, attrs: AttrMap, ctx: &Context<'_>, ) -> Result<Self::Builder, FromEventsError>

Attempt to initiate the streamed construction of this struct from XML.

fn xml_name_matcher() -> XmlNameMatcher<'static>

Return a predicate which determines if Self may be parsed from a given XML element.

impl PartialEq for Validate

fn eq(&self, other: &Validate) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<Element> for Validate

type Error = FromElementError

The type returned in the event of a conversion error.

fn try_from(other: Element) -> Result<Self, FromElementError>

Performs the conversion.

impl StructuralPartialEq for Validate