db

package

v0.1.6 Latest Latest Go to latest Published: Apr 29, 2025 License: MIT Imports: 16 Imported by: 3

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
Learn more about best practices

Repository

github.com/hugr-lab/query-engine

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Open Source Insights

Documentation ¶

Index ¶

func ColumnValue(a arrow.Array, i int) any
func RecordToJSON(rec arrow.Record, asArray bool, w io.Writer) error
type Arrow
- func (a *Arrow) Close() error
type ArrowTable
- func NewDBJsonTable(releaseAfterMarshal bool) *ArrowTable
type Config
type Connection
type JsonValue
- func (v *JsonValue) MarshalJSON() ([]byte, error)
type Pool
- func Connect(ctx context.Context, config Config) (*Pool, error)
- func NewPool(path string) (*Pool, error)
type Settings

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func ColumnValue ¶

func ColumnValue(a arrow.Array, i int) any

func RecordToJSON ¶

func RecordToJSON(rec arrow.Record, asArray bool, w io.Writer) error

Types ¶

type Arrow ¶

type Arrow struct {
	*duckdb.Arrow
	// contains filtered or unexported fields
}

func (*Arrow) Close ¶

func (a *Arrow) Close() error

type ArrowTable ¶ added in v0.1.5

type ArrowTable struct {
	// contains filtered or unexported fields
}

func NewDBJsonTable ¶

func NewDBJsonTable(releaseAfterMarshal bool) *ArrowTable

func (*ArrowTable) Append ¶ added in v0.1.5

func (t *ArrowTable) Append(rec arrow.Record)

func (*ArrowTable) Chunk ¶ added in v0.1.5

func (t *ArrowTable) Chunk(i int) arrow.Record

func (*ArrowTable) DecodeMsgpack ¶ added in v0.1.5

func (t *ArrowTable) DecodeMsgpack(dec *msgpack.Decoder) error

func (*ArrowTable) EncodeMsgpack ¶ added in v0.1.5

func (t *ArrowTable) EncodeMsgpack(enc *msgpack.Encoder) error

func (*ArrowTable) MarshalJSON ¶ added in v0.1.5

func (t *ArrowTable) MarshalJSON() ([]byte, error)

func (*ArrowTable) NumChunks ¶ added in v0.1.5

func (t *ArrowTable) NumChunks() int

func (*ArrowTable) NumCols ¶ added in v0.1.5

func (t *ArrowTable) NumCols() int

func (*ArrowTable) NumRows ¶ added in v0.1.5

func (t *ArrowTable) NumRows() int

func (*ArrowTable) Release ¶ added in v0.1.5

func (t *ArrowTable) Release()

func (*ArrowTable) RowData ¶ added in v0.1.5

func (t *ArrowTable) RowData(i int) (map[string]any, bool)

func (*ArrowTable) SetAutoRelease ¶ added in v0.1.5

func (t *ArrowTable) SetAutoRelease(release bool)

type Config ¶

type Config struct {
	Path         string
	MaxOpenConns int
	MaxIdleConns int

	Settings Settings
}

type Connection ¶

type Connection struct {
	// contains filtered or unexported fields
}

func (*Connection) Close ¶

func (c *Connection) Close() error

func (*Connection) DBConn ¶

func (c *Connection) DBConn() *sql.Conn

func (*Connection) Exec ¶

func (c *Connection) Exec(ctx context.Context, query string, args ...any) (sql.Result, error)

func (*Connection) Query ¶

func (c *Connection) Query(ctx context.Context, query string, args ...any) (*sql.Rows, error)

func (*Connection) QueryRow ¶

func (c *Connection) QueryRow(ctx context.Context, query string, args ...any) *sql.Row

type JsonValue ¶

type JsonValue string

func (*JsonValue) MarshalJSON ¶

func (v *JsonValue) MarshalJSON() ([]byte, error)

type Pool ¶

type Pool struct {
	// contains filtered or unexported fields
}

func Connect ¶

func Connect(ctx context.Context, config Config) (*Pool, error)

func NewPool ¶

func NewPool(path string) (*Pool, error)

func (*Pool) Arrow ¶

func (p *Pool) Arrow(ctx context.Context) (*Arrow, error)

func (*Pool) Close ¶

func (p *Pool) Close() error

func (*Pool) Commit ¶

func (p *Pool) Commit(ctx context.Context) error

func (*Pool) Conn ¶

func (p *Pool) Conn(ctx context.Context) (*Connection, error)

func (*Pool) Connector ¶

func (p *Pool) Connector() *duckdb.Connector

func (*Pool) Exec ¶

func (p *Pool) Exec(ctx context.Context, query string, args ...interface{}) (sql.Result, error)

func (*Pool) IsTxContext ¶

func (p *Pool) IsTxContext(ctx context.Context) bool

func (*Pool) QueryArrowTable ¶ added in v0.1.5

func (db *Pool) QueryArrowTable(ctx context.Context, q string, wrap bool, params ...any) (any, error)

func (*Pool) QueryJsonRow ¶

func (db *Pool) QueryJsonRow(ctx context.Context, q string, params ...any) (*JsonValue, error)

func (*Pool) QueryJsonScalarArray ¶

func (db *Pool) QueryJsonScalarArray(ctx context.Context, q string, params ...any) (any, error)

func (*Pool) QueryJsonScalarArrayArrow ¶

func (db *Pool) QueryJsonScalarArrayArrow(ctx context.Context, q string, params ...any) (*ArrowTable, error)

func (*Pool) QueryJsonTableArrow ¶

func (db *Pool) QueryJsonTableArrow(ctx context.Context, q string, wrap bool, params ...any) (*ArrowTable, error)

func (*Pool) QueryRowToData ¶

func (db *Pool) QueryRowToData(ctx context.Context, data any, q string, params ...any) error

func (*Pool) QueryTableToSlice ¶

func (db *Pool) QueryTableToSlice(ctx context.Context, data any, q string, params ...any) error

func (*Pool) Rollback ¶

func (p *Pool) Rollback(ctx context.Context) error

func (*Pool) SetMaxIdleConns ¶

func (p *Pool) SetMaxIdleConns(n int)

func (*Pool) SetMaxOpenConns ¶

func (p *Pool) SetMaxOpenConns(n int)

func (*Pool) WithTx ¶

func (p *Pool) WithTx(parent context.Context) (context.Context, error)

type Settings ¶

type Settings struct {
	AllowedDirectories   []string
	AllowedPaths         []string
	EnableLogging        bool
	MaxMemory            int
	MaxTempDirectorySize int
	TempDirectory        string
	WorkerThreads        int
	// POSTGRESQL
	PGConnectionLimit int
	PGPagesPerTask    int
}

Source Files ¶

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