Trait openstack::common::ResourceQuery

pub trait ResourceQuery {
    type Item;

    const DEFAULT_LIMIT: usize;

    fn can_paginate(&self) -> Result<bool>;
    fn extract_marker(&self, resource: &Self::Item) -> String;
    fn fetch_chunk(
        &self,
        limit: Option<usize>,
        marker: Option<String>
    ) -> Result<Vec<Self::Item>>;

    fn validate(&mut self) -> Result<()> { ... }
}

A query for resources.

This is a low-level trait that should not be used directly.

Required Associated Types

type Item

Item type.

Required Associated Constants

const DEFAULT_LIMIT: usize

Default limit to use with this query.

Required Methods

fn can_paginate(&self) -> Result<bool>

Whether pagination is supported for this query.

fn extract_marker(&self, resource: &Self::Item) -> String

Extract a marker from a resource.

fn fetch_chunk(
    &self,
    limit: Option<usize>,
    marker: Option<String>
) -> Result<Vec<Self::Item>>

Get a chunk of resources.

Provided Methods

fn validate(&mut self) -> Result<()>

Validate the query before the first execution.

This call may modify internal representation of the query, so changing the query after calling it may cause undesired side effects.

Implementors

impl ResourceQuery for DetailedFlavorQuery

type Item = Flavor

const DEFAULT_LIMIT: usize = 50usize

impl ResourceQuery for DetailedServerQuery

type Item = Server

const DEFAULT_LIMIT: usize = 50usize

impl ResourceQuery for FlavorQuery

type Item = FlavorSummary

const DEFAULT_LIMIT: usize = 100usize

impl ResourceQuery for KeyPairQuery

type Item = KeyPair

const DEFAULT_LIMIT: usize = 50usize

impl ResourceQuery for ServerQuery

type Item = ServerSummary

const DEFAULT_LIMIT: usize = 100usize

impl ResourceQuery for ImageQuery

type Item = Image

const DEFAULT_LIMIT: usize = 50usize

impl ResourceQuery for FloatingIpQuery

type Item = FloatingIp

const DEFAULT_LIMIT: usize = 50usize

impl ResourceQuery for NetworkQuery

type Item = Network

const DEFAULT_LIMIT: usize = 50usize

impl ResourceQuery for PortQuery

type Item = Port

const DEFAULT_LIMIT: usize = 50usize

impl ResourceQuery for SubnetQuery

type Item = Subnet

const DEFAULT_LIMIT: usize = 50usize