predicate

package

v2.10.0 Latest Latest Go to latest Published: Oct 15, 2026 License: MIT Imports: 8 Imported by: 0

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func New(n Node) (influxdb.Predicate, error)

New predicate from a node

func NodeComparison(op influxdb.Operator) (datatypes.Node_Comparison, error)

NodeComparison convert influxdb.Operator to Node_Comparison.

func NodeTypeLiteral(tr TagRuleNode) *datatypes.Node

NodeTypeLiteral convert a TagRuleNode to a nodeTypeLiteral.

type LogicalNode struct {
	Operator LogicalOperator `json:"operator"`
	Children [2]Node         `json:"children"`
}

LogicalNode is a node type includes a logical expression with other nodes.

func (n LogicalNode) ToDataType() (*datatypes.Node, error)

ToDataType convert a LogicalNode to datatypes.Node.

type LogicalOperator int

LogicalOperator is a string type of logical operator.

var (
	LogicalAnd LogicalOperator = 1
)

LogicalOperators

func (op LogicalOperator) Value() (datatypes.Node_Logical, error)

Value returns the node logical type.

type Node interface {
	ToDataType() (*datatypes.Node, error)
}

Node is a predicate node.

func Parse(sts string) (n Node, err error)

Parse the predicate statement.

type TagRuleNode influxdb.TagRule

TagRuleNode is a node type of a single tag rule.

func (n TagRuleNode) ToDataType() (*datatypes.Node, error)

ToDataType convert a TagRuleNode to datatypes.Node.