Struct RelativePathElement 

pub struct RelativePathElement {
    pub reference_type_id: NodeId,
    pub is_inverse: bool,
    pub include_subtypes: bool,
    pub target_name: QualifiedName,
}

https://reference.opcfoundation.org/v105/Core/docs/Part4/7.31

Fields

reference_type_id: NodeId

is_inverse: bool

include_subtypes: bool

target_name: QualifiedName

Implementations

impl RelativePathElement

pub fn default_node_resolver( namespace: u16, browse_name: &str, ) -> Option<NodeId>

This is the default node resolver that attempts to resolve a browse name onto a reference type id. The default implementation resides in the types module so it doesn’t have access to the address space.

Therefore it makes a best guess by testing the browse name against the standard reference types and if fails to match it will produce a node id from the namespace and browse name.

pub fn from_str<CB>( path: &str, node_resolver: &CB, ) -> Result<RelativePathElement, RelativePathError>

where CB: Fn(u16, &str) -> Option<NodeId>,

Parse a relative path element according to the OPC UA Part 4 Appendix A BNF

<relative-path> ::= <reference-type> <browse-name> [relative-path] <reference-type> ::= '/' | '.' | '<' ['#'] ['!'] <browse-name> '>' <browse-name> ::= [<namespace-index> ':'] <name> <namespace-index> ::= <digit> [<digit>] <digit> ::= '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' <name> ::= (<name-char> | '&' <reserved-char>) [<name>] <reserved-char> ::= '/' | '.' | '<' | '>' | ':' | '#' | '!' | '&' <name-char> ::= All valid characters for a String (see Part 3) excluding reserved-chars.

Examples

• /foo
• /0:foo
• .bar
• <0:HasEncoding>bar
• <!NonHierarchicalReferences>foo
• <#!2:MyReftype>2:blah

Trait Implementations

impl BinaryDecodable for RelativePathElement

fn decode<S: Read + ?Sized>( stream: &mut S, ctx: &Context<'_>, ) -> EncodingResult<Self>

Decodes an instance from the read stream. The decoding options contains restrictions set by the server / client on the length of strings, arrays etc. If these limits are exceeded the implementation should return with a BadDecodingError as soon as possible.

impl BinaryEncodable for RelativePathElement

fn byte_len(&self, ctx: &Context<'_>) -> usize

Returns the exact byte length of the structure as it would be if encode were called. This may be called prior to writing to ensure the correct amount of space is available.

fn encode<S: Write + ?Sized>( &self, stream: &mut S, ctx: &Context<'_>, ) -> EncodingResult<()>

Encodes the instance to the write stream.

fn override_encoding(&self) -> Option<BuiltInDataEncoding>

Override the extension object encoding used for this type. This only makes sense if the type can only ever be encoded using a single built-in encoding.

fn encode_to_vec(&self, ctx: &Context<'_>) -> Vec<u8>

Convenience method for encoding a message straight into an array of bytes. It is preferable to reuse buffers than to call this so it should be reserved for tests and trivial code.

impl Clone for RelativePathElement

fn clone(&self) -> RelativePathElement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RelativePathElement

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

Formats the value using the given formatter.

impl Default for RelativePathElement

fn default() -> RelativePathElement

Returns the “default value” for a type.

impl<'a> From<&'a RelativePathElement> for String

fn from(element: &'a RelativePathElement) -> String

Converts to this type from the input type.

impl JsonDecodable for RelativePathElement

fn decode( stream: &mut JsonStreamReader<&mut dyn Read>, ctx: &Context<'_>, ) -> EncodingResult<Self>

Decode Self from a JSON stream.

impl JsonEncodable for RelativePathElement

fn encode( &self, stream: &mut JsonStreamWriter<&mut dyn Write>, ctx: &Context<'_>, ) -> EncodingResult<()>

Write the type to the provided JSON writer.

impl MessageInfo for RelativePathElement

fn type_id(&self) -> ObjectId

The binary type id associated with the message

fn json_type_id(&self) -> ObjectId

The JSON type id associated with the message.

fn xml_type_id(&self) -> ObjectId

The XML type id associated with the message.

fn data_type_id(&self) -> DataTypeId

The data type id associated with the message.

impl PartialEq for RelativePathElement

fn eq(&self, other: &RelativePathElement) -> 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 UaNullable for RelativePathElement

fn is_ua_null(&self) -> bool

Return true if this value is null, meaning it can be left out when being encoded in JSON and XML encodings.

impl XmlDecodable for RelativePathElement

fn decode( stream: &mut XmlStreamReader<&mut dyn Read>, ctx: &Context<'_>, ) -> EncodingResult<Self>

Decode a value from an XML stream.

impl XmlEncodable for RelativePathElement

fn encode( &self, stream: &mut XmlStreamWriter<&mut dyn Write>, ctx: &Context<'_>, ) -> EncodingResult<()>

Encode a value to an XML stream.

impl XmlType for RelativePathElement

const TAG: &'static str = "RelativePathElement"

The static fallback tag for this type. Convenience feature, but also used in nested types.

fn tag(&self) -> &str

The XML tag name for this type.

impl StructuralPartialEq for RelativePathElement