Struct couchdb::Revision

pub struct Revision { /* fields omitted */ }

Revision contains a document revision.

Summary

• Revision stores a revision, which is a string that looks like 1-9c65296036141e575d32ba9c034dd3ee.

• Revision can be parsed from a string via FromStr or the Revision::parse method.

• Revision implements Deserialize and Serialize.

Remarks

A CouchDB document revision comprises a sequence number and an MD5 digest. The sequence number (usually) starts at 1 when the document is created and increments by one each time the document is updated. The digest is a hash of the document content, which the CouchDB server uses to detect conflicts.

Example

extern crate couchdb;

let rev = couchdb::Revision::parse("42-1234567890abcdef1234567890abcdef")
    .unwrap();

assert_eq!(rev.to_string(), "42-1234567890abcdef1234567890abcdef");

Methods

impl Revision

fn parse(s: &str) -> Result<Self, Error>

Constructs a new Revision from the given string.

The string must be of the form 42-1234567890abcdef1234567890abcdef.

fn sequence_number(&self) -> u64

Returns the sequence number part of the revision.

The sequence number is the 42 part of the revision 42-1234567890abcdef1234567890abcdef.

Trait Implementations

impl Clone for Revision

fn clone(&self) -> Revision

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Revision

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for Revision

impl Hash for Revision

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl PartialEq for Revision

fn eq(&self, __arg_0: &Revision) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Revision) -> bool

This method tests for !=.

impl Display for Revision

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

Formats the value using the given formatter.

impl FromStr for Revision

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Serialize for Revision

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for Revision

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.