graphmodel

type Edge ¶

type Edge struct {
	Style EdgeStyle
	Label string
	To    *Node
}

Edge is a link from a parent Node to a child Node.

type EdgeStyle ¶

type EdgeStyle int

EdgeStyle describes how an edge between plan nodes should be drawn.

const (
	// EdgeStyleSolid is a solid line (the default, local links).
	EdgeStyleSolid EdgeStyle = iota
	// EdgeStyleDashed is a dashed line (possible remote calls).
	EdgeStyleDashed
	// EdgeStyleDotted is a dotted line.
	EdgeStyleDotted
)

type Graph ¶

type Graph struct {
	Root  *Node
	Query *QueryText
}

Graph is the whole resolved plan graph.

type Item ¶

type Item struct {
	Text string
	KV   *KV
}

Item is one line of a Label body: either free text (a content line such as the short representation, a scan-info line or a scalar-link line) or a metadata key/value pair. KV is nil for text items and set for pairs.

type KV ¶

type KV struct {
	Key   string
	Value string
}

KV is a key/value pair, used for metadata pairs, execution-stats pairs and query-stat pairs.

type Label ¶

type Label struct {
	Title   string
	Body    []Item
	Stats   []KV
	Summary []string
}

Label is a backend-neutral representation of a node's label. The sections carry semantic style: Title is bold, Body is plain, and Stats/Summary are italic. Serializers render the sections in field order to reproduce the per-backend layout.

Title holds the node title (already escaped for the dominant backend at build time). The dot HTML path composes Title separately with CENTER alignment; the dot body path deliberately omits it. The mermaid path places Title inline at the top of the label.

type Node ¶

type Node struct {
	ID       string
	Label    Label
	Tooltip  string
	Children []Edge
}

Node is a graph node with its resolved label and tooltip.

Nodes can be shared: the same *Node may appear as the target of edges from multiple parents. Serializers that dedup (for example the mermaid path) use ID as the identity key; serializers that emit a full traversal (for example the dot path) walk Children directly.

type QueryText ¶

type QueryText struct {
	Text  string
	Stats []KV
}

QueryText is the optional query-text node's content. Stats is sorted by key and is empty unless query stats were requested.