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ensql

package

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Versions in this module

v0

v0.12.8

Sep 11, 2024

v0.12.7

Jul 3, 2024

v0.12.6

Apr 17, 2024

v0.12.5

Jan 25, 2024

v0.12.4

Dec 19, 2023

v0.12.3

Dec 7, 2023

v0.12.2

Dec 1, 2023

v0.12.1

Nov 9, 2023

v0.12.0

Oct 23, 2023

v0.11.0

Oct 10, 2023

v0.10.0

Sep 23, 2023

v0.9.0

Aug 17, 2023

v0.8.0

Aug 1, 2023

Changes in this version

+ const NEALT

+ var ErrAppendCondition = errors.New("cannot append or update condition in group")

+ var ErrAppendOperator = errors.New("cannot append operator to condition group")

+ var ErrCloseParens = errors.New("cannot close expression parentheses")

+ var ErrInvalidPredicate = errors.New("could not parse or evaluate predicate")

+ var ErrNonBoolean = errors.New("cannot parse non-boolean token as a bool")

+ var ErrNotAnOperator = errors.New("cannot parse token as an operator")

+ var ErrOpenParens = errors.New("cannot open expression parentheses")

+ var ErrPredicateType = errors.New("unknown or unhandled operator in predicate")

+ var ErrUnknownOperator = errors.New("unknown operator token specified")

type Condition

+ func (c Condition) IsPartial() bool

+ func (c Condition) String() string

+ type ConditionGroup struct

+ func MakeConditionGroup(clause string) *ConditionGroup

+ func NewConditionGroup() *ConditionGroup

+ func (g *ConditionGroup) CloseParens() error

+ func (g *ConditionGroup) ConditionLeft(token Token) error

+ func (g *ConditionGroup) ConditionOperator(token Token) error

+ func (g *ConditionGroup) ConditionRight(token Token) error

+ func (g *ConditionGroup) LogicalOperator(op Operator) error

+ func (g *ConditionGroup) OpenParens() error

+ func (g *ConditionGroup) String() string

+ type Predicate struct

+ Left any

+ Operator Operator

+ Right any

+ func (p Predicate) Evaluate(vars ...any) (bool, error)

+ func (p Predicate) Type() PredicateType

+ func (p Predicate) Validate() error

+ type PredicateType uint8

+ const ComparisonPredicate

+ const LogicalPredicate

+ const SearchPredicate

+ const UnknownPredicateType

type Token

+ func (t Token) ParseBool() (bool, error)

+ func (t Token) ParseOperator() (Operator, error)

type TokenType

+ const Boolean

v0.7.1

Jun 13, 2023

v0.7.0

May 31, 2023

Changes in this version

+ const AND

+ const AS

+ const ASTERISK

+ const COMMA

+ const DOT

+ const EQ

+ const ESCAPE

+ const FROM

+ const GT

+ const GTE

+ const ILIKE

+ const LIKE

+ const LIMIT

+ const LP

+ const LT

+ const LTE

+ const MINUS

+ const NE

+ const OFFSET

+ const OR

+ const RP

+ const SC

+ const SELECT

+ const SQUOTE

+ const SelectQuery

+ const UnknownQueryType

+ const WHERE

+ var Empty = Token

+ var ErrEmptyQuery = errors.New("empty query is invalid")

+ var ErrInvalidSelectAllFields = errors.New("cannot select * and specify fields")

+ var ErrMissingTopic = errors.New("topic name cannot be empty")

+ var ErrNoFieldsSelected = errors.New("SELECT requires field projection or *")

+ var ErrNonNumeric = errors.New("cannot parse non-numeric token as a number")

+ var ErrUnhandledStep = errors.New("parser has reached an unhandled state")

+ var ReservedWordType = map[string]TokenType

+ var ReservedWords = []string

+ func InvalidState(expected, actual string) error

+ type Condition struct

+ Left Token

+ Operator Operator

+ Right Token

+ type Operator uint8

+ const And

+ const Eq

+ const Gt

+ const Gte

+ const ILike

+ const Like

+ const Lt

+ const Lte

+ const Ne

+ const Or

+ const UnknownOperator

+ func (o Operator) String() string

+ type Query struct

+ Aliases map[string]string

+ Conditions []Condition

+ Fields []Token

+ HasLimit bool

+ HasOffset bool

+ Limit uint64

+ Offset uint64

+ Raw string

+ Topic Topic

+ Type QueryType

+ func Parse(sql string) (Query, error)

+ func (q Query) String() string

+ type QueryType uint8

+ func (q QueryType) String() string

+ type SyntaxError struct

+ func Error(pos int, near, msg string) *SyntaxError

+ func Errorf(pos int, near, format string, args ...interface{}) *SyntaxError

+ func (e *SyntaxError) Error() string

+ type Token struct

+ Length int

+ Token string

+ Type TokenType

+ func Tokenize(sql string) []Token

+ func (t Token) ParseFloat(bitSize int) (float64, error)

+ func (t Token) ParseInt(base, bitSize int) (int64, error)

+ func (t Token) ParseUint(base, bitSize int) (uint64, error)

+ type TokenType uint8

+ const Asterisk

+ const EmptyToken

+ const Identifier

+ const Numeric

+ const OperatorToken

+ const Punctuation

+ const QuotedString

+ const ReservedWord

+ const UnknownTokenType

+ type Topic struct

+ Schema string

+ Topic string

+ Version uint32