Struct google_spanner1::PlanNode

pub struct PlanNode {
    pub index: Option<i32>,
    pub kind: Option<String>,
    pub display_name: Option<String>,
    pub execution_stats: Option<HashMap<String, String>>,
    pub child_links: Option<Vec<ChildLink>>,
    pub short_representation: Option<ShortRepresentation>,
    pub metadata: Option<HashMap<String, String>>,
}

Node information for nodes appearing in a QueryPlan.plan_nodes.

This type is not used in any activity, and only used as part of another schema.

Fields

index: Option<i32>

The PlanNode’s index in node list.

kind: Option<String>

Used to determine the type of node. May be needed for visualizing different kinds of nodes differently. For example, If the node is a SCALAR node, it will have a condensed representation which can be used to directly embed a description of the node in its parent.

display_name: Option<String>

The display name for the node.

execution_stats: Option<HashMap<String, String>>

The execution statistics associated with the node, contained in a group of key-value pairs. Only present if the plan was returned as a result of a profile query. For example, number of executions, number of rows/time per execution etc.

child_links: Option<Vec<ChildLink>>

List of child node indexes and their relationship to this parent.

short_representation: Option<ShortRepresentation>

Condensed representation for SCALAR nodes.

metadata: Option<HashMap<String, String>>

Attributes relevant to the node contained in a group of key-value pairs. For example, a Parameter Reference node could have the following information in its metadata:

{
  "parameter_reference": "param1",
  "parameter_type": "array"
}

Trait Implementations

impl Clone for PlanNode

fn clone(&self) -> PlanNode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PlanNode

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

Formats the value using the given formatter.

impl Default for PlanNode

fn default() -> PlanNode

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PlanNode

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for PlanNode

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Part for PlanNode