jsonpath

package
v0.25.2 Latest Latest
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 Go to latest Published: Jun 5, 2025 License: Apache-2.0 Imports: 7 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source 
var MethodTypeStrings = [...]string{
	SizeMethod:    "size",
	TypeMethod:    "type",
	AbsMethod:     "abs",
	FloorMethod:   "floor",
	CeilingMethod: "ceiling",
}
View Source 
var OperationTypeStrings = [...]string{
	OpCompEqual:        "==",
	OpCompNotEqual:     "!=",
	OpCompLess:         "<",
	OpCompLessEqual:    "<=",
	OpCompGreater:      ">",
	OpCompGreaterEqual: ">=",
	OpLogicalAnd:       "&&",
	OpLogicalOr:        "||",
	OpLogicalNot:       "!",
	OpAdd:              "+",
	OpSub:              "-",
	OpMult:             "*",
	OpDiv:              "/",
	OpMod:              "%",
	OpLikeRegex:        "like_regex",
	OpPlus:             "+",
	OpMinus:            "-",
	OpExists:           "exists",
	OpIsUnknown:        "is unknown",
	OpStartsWith:       "starts with",
}

Functions

func RegexFlagsToGoFlags 

func RegexFlagsToGoFlags(flags string) (syntax.Flags, error)

RegexFlagsToGoFlags converts a string of flags from `like_regex` to syntax.Flags, to match the flags provided by Postgres' `like_regex` flag interface.

The following flags are defined in Postgres: - i: case-insensitive - s: dot matches newline - m: ^ and $ match at newlines - x: ignore whitespace in pattern (this flag is defined, but not accepted) - q: no special characters

Types

type AnyKey 

type AnyKey struct{}

func (AnyKey) ToString 

func (a AnyKey) ToString(sb *strings.Builder, inKey, _ bool)

func (AnyKey) Validate 

func (a AnyKey) Validate(nestingLevel int, insideArraySubscript bool) error

type ArrayIndexRange 

type ArrayIndexRange struct {
	Start Path
	End   Path
}

func (ArrayIndexRange) ToString 

func (a ArrayIndexRange) ToString(sb *strings.Builder, _, _ bool)

func (ArrayIndexRange) Validate 

func (a ArrayIndexRange) Validate(nestingLevel int, insideArraySubscript bool) error

type ArrayList 

type ArrayList []Path

func (ArrayList) ToString 

func (a ArrayList) ToString(sb *strings.Builder, _, _ bool)

func (ArrayList) Validate 

func (a ArrayList) Validate(nestingLevel int, insideArraySubscript bool) error

type Current 

type Current struct{}

func (Current) ToString 

func (c Current) ToString(sb *strings.Builder, _, _ bool)

func (Current) Validate 

func (c Current) Validate(nestingLevel int, insideArraySubscript bool) error

type Filter 

type Filter struct {
	Condition Path
}

func (Filter) ToString 

func (f Filter) ToString(sb *strings.Builder, _, _ bool)

func (Filter) Validate 

func (f Filter) Validate(nestingLevel int, insideArraySubscript bool) error

type Jsonpath 

type Jsonpath struct {
	Strict bool
	Path   Path
}

func (Jsonpath) String 

func (j Jsonpath) String() string

func (Jsonpath) Validate 

func (j Jsonpath) Validate() error

Validate walks the Jsonpath AST. It returns an error if the AST is invalid (last not in array subscripts, @ in root expressions).

type Key 

type Key string

func (Key) ToString 

func (k Key) ToString(sb *strings.Builder, inKey, _ bool)

func (Key) Validate 

func (k Key) Validate(nestingLevel int, insideArraySubscript bool) error

type Last 

type Last struct{}

func (Last) ToString 

func (l Last) ToString(sb *strings.Builder, _, _ bool)

func (Last) Validate 

func (l Last) Validate(nestingLevel int, insideArraySubscript bool) error

type Method 

type Method struct {
	Type MethodType
}

func (Method) ToString 

func (m Method) ToString(sb *strings.Builder, _, _ bool)

func (Method) Validate 

func (m Method) Validate(nestingLevel int, insideArraySubscript bool) error

type MethodType 

type MethodType int
const (
	InvalidMethod MethodType = iota
	SizeMethod
	TypeMethod
	AbsMethod
	FloorMethod
	CeilingMethod
)

type Operation 

type Operation struct {
	Type  OperationType
	Left  Path
	Right Path
}

func (Operation) ToString 

func (o Operation) ToString(sb *strings.Builder, _, printBrackets bool)

func (Operation) Validate 

func (o Operation) Validate(nestingLevel int, insideArraySubscript bool) error

type OperationType 

type OperationType int
const (
	OpInvalid OperationType = iota
	OpCompEqual
	OpCompNotEqual
	OpCompLess
	OpCompLessEqual
	OpCompGreater
	OpCompGreaterEqual
	OpLogicalAnd
	OpLogicalOr
	OpLogicalNot
	OpAdd
	OpSub
	OpMult
	OpDiv
	OpMod
	OpLikeRegex
	OpPlus
	OpMinus
	OpExists
	OpIsUnknown
	OpStartsWith
)

type Path 

type Path interface {
	// ToString appends the string representation of the path to the given
	// strings.Builder. This implementation matches
	// postgres/src/backend/utils/adt/jsonpath.c:printJsonPathItem().
	ToString(sb *strings.Builder, inKey, printBrackets bool)

	// Validate returns an error if there is a semantic error in the path, and
	// collects all variable names in a map with a strictly increasing index,
	// indicating the order of their first appearance. Leaf nodes should generally
	// return nil.
	Validate(nestingLevel int, insideArraySubscript bool) error
}

type Paths 

type Paths []Path

func (Paths) ToString 

func (p Paths) ToString(sb *strings.Builder, _, _ bool)

func (Paths) Validate 

func (p Paths) Validate(nestingLevel int, insideArraySubscript bool) error

type Regex 

type Regex struct {
	Regex string
	Flags syntax.Flags
}

func (Regex) Pattern 

func (r Regex) Pattern() (string, error)

Pattern implements the tree.RegexpCacheKey interface.

func (Regex) ToString 

func (r Regex) ToString(sb *strings.Builder, _, _ bool)

func (Regex) Validate 

func (r Regex) Validate(nestingLevel int, insideArraySubscript bool) error

type Root 

type Root struct{}

func (Root) ToString 

func (r Root) ToString(sb *strings.Builder, _, _ bool)

func (Root) Validate 

func (r Root) Validate(nestingLevel int, insideArraySubscript bool) error

type Scalar 

type Scalar struct {
	Type     ScalarType
	Value    json.JSON
	Variable string
}

func (Scalar) ToString 

func (s Scalar) ToString(sb *strings.Builder, _, _ bool)

func (Scalar) Validate 

func (s Scalar) Validate(nestingLevel int, insideArraySubscript bool) error

type ScalarType 

type ScalarType int
const (
	ScalarInt ScalarType = iota
	ScalarFloat
	ScalarString
	ScalarBool
	ScalarNull
	ScalarVariable
)

type Wildcard 

type Wildcard struct{}

func (Wildcard) ToString 

func (w Wildcard) ToString(sb *strings.Builder, _, _ bool)

func (Wildcard) Validate 

func (w Wildcard) Validate(nestingLevel int, insideArraySubscript bool) error

Source Files

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Directories

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