schema

type DataField struct {
	ID          int      `json:"id"`
	Name        string   `json:"name"`
	Type        DataType `json:"type"`
	Description string   `json:"description,omitempty"`
}

type DataType struct {
	// Type is the base type name in uppercase, e.g. "INT", "BIGINT", "ARRAY", "MAP".
	// For parameterised types the raw string is preserved here, e.g. "VARCHAR(255)".
	Type     string
	Nullable bool
	// For DECIMAL
	Precision int
	Scale     int
	// For CHAR / VARCHAR / BINARY / VARBINARY — extracted from e.g. "VARCHAR(255)"
	Length int
	// For ARRAY / MULTISET
	ElementType *DataType
	// For MAP
	KeyType   *DataType
	ValueType *DataType
	// For ROW
	Fields []DataField
}

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

type TableSchema struct {
	// Version is the schema-file format version (0, 1, or 2).
	Version int `json:"version"`
	// ID is the schema's monotonically increasing identifier.
	ID int64 `json:"id"`
	// Fields lists all columns in declaration order.
	Fields []DataField `json:"fields"`
	// HighestFieldID is the largest field ID ever assigned; used for schema evolution.
	HighestFieldID int `json:"highestFieldId"`
	// PartitionKeys are the names of the partition columns (empty for unpartitioned tables).
	PartitionKeys []string `json:"partitionKeys"`
	// PrimaryKeys are the names of the primary key columns (empty for append-only tables).
	PrimaryKeys []string `json:"primaryKeys"`
	// Options holds the table's WITH(...) properties, e.g. "merge-engine": "deduplicate".
	Options map[string]string `json:"options"`
	// Comment is an optional human-readable table description.
	Comment string `json:"comment,omitempty"`
	// TimeMillis is the epoch-millisecond timestamp when this schema was created.
	TimeMillis int64 `json:"timeMillis,omitempty"`
}