Struct Capabilities 

pub struct Capabilities {

    pub projects: Support,
    pub documents: Support,
    pub comments: Support,
    pub priority: Support,
    pub filter_by_priority: Support,
    pub orphan_tasks: Support,
    pub filter_by_label: Support,
    pub filter_by_status: Support,
    pub search_title: Support,
    pub search_content: Support,
    pub task_dependencies: DependencySupport,
    pub project_dependencies: DependencySupport,
    pub max_page_size: u32,
}

One source’s declared abilities.

Fields

projects: Support

Whether the source has projects at all.

documents: Support

Whether the source has documents at all.

The same shape as projects, and read the same way: it says what the source holds, not which predicate it applies. It is therefore not one of the predicates the second capability rule reaches — there is no wider result set to return and nothing for the engine to narrow. A source declaring Unsupported is never asked for a document at all; the engine reads this once at the handshake, exactly as it reads TaskSource::writes, and a document read across several sources reports such a source as holding none rather than as having failed.

Defaulted to Support::Unsupported when a wire value omits it, so a plugin that predates documents says nothing here and is read as the document-free source it is.

comments: Support

Whether the source’s tasks have comments at all.

Read exactly as documents is: it says what the source holds, not which predicate it applies, so the second capability rule does not reach it. A source declaring Unsupported is never sent a comment call — the engine reads this once at the handshake and refuses such a call before anything is read, naming the source and its plugin. Adding, editing and removing a comment is a write, so a source declaring Native is written through only when TaskSource::writes says it can be written at all.

Defaulted to Support::Unsupported when a wire value omits it, so a plugin that predates comments says nothing here and is read as the comment-free source it is.

priority: Support

Whether the source’s tasks hold a Priority at all.

Read exactly as documents and comments are: it says what the source holds, not which predicate it applies, so the second capability rule does not reach it. A source declaring Unsupported reports every task’s priority as none, and the engine never hands it one that is not: a copy carrying another priority to it, and a task priority set naming it, are both refused before the source is asked, naming the source and the field.

Defaulted to Support::Unsupported when a wire value omits it, so a plugin that predates priorities says nothing here and is never handed a priority it would drop.

filter_by_priority: Support

Whether the source keeps only the tasks whose priority a query lists, itself.

A predicate, and so one the second capability rule reaches: a source declaring Unsupported ignores TaskQuery::priorities and returns the wider set, and the engine narrows it. Its own member rather than a reading of priority, because holding a priority and filtering by one are two abilities — a board holds a priority on a field it cannot be asked to filter by.

Defaulted to Support::Unsupported when a wire value omits it, so a plugin that predates priorities is narrowed by the engine rather than trusted to have filtered.

orphan_tasks: Support

Whether the source can select tasks belonging to no project.

filter_by_label: Support

Whether the source filters by label itself.

filter_by_status: Support

Whether the source filters by status itself.

search_title: Support

Whether the source searches titles itself.

search_content: Support

Whether the source searches bodies itself.

task_dependencies: DependencySupport

How far the source can walk task dependencies.

project_dependencies: DependencySupport

How far the source can walk project dependencies.

max_page_size: u32

The largest page the source will serve. At least 1 — a source that serves no rows cannot be paged, and every implementation rejects zero where its config is read.

Trait Implementations

impl Clone for Capabilities

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Capabilities

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Capabilities

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for Capabilities

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for Capabilities

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Capabilities

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Capabilities