Enum CompiledTransform 

#[non_exhaustive]
pub enum CompiledTransform {
    Flatten {
        separator: String,
    },
    RenameKeys {
        re: Regex,
        replacement: String,
    },
    KeysCase {
        mode: KeyCaseMode,
    },
    Select {
        fields: Vec<String>,
    },
    Drop {
        fields: Vec<String>,
    },
    Set {
        values: Map<String, Value>,
    },
    RenameField {
        fields: Vec<(String, String)>,
    },
    Cast {
        fields: HashMap<String, CastType>,
        on_error: CastOnError,
    },
    Redact {
        fields: Vec<String>,
        mask: Value,
    },
    ValueCase {
        fields: Vec<String>,
        mode: ValueCaseMode,
    },
    SpellSymbols {
        replacements: Vec<(String, String)>,
        separator: String,
    },
    Hash {
        fields: Vec<String>,
        algorithm: HashAlgorithm,
        encoding: HashEncoding,
        salt: Option<String>,
        into: Option<String>,
    },
    JsonParse {
        fields: Vec<String>,
        on_error: JsonParseOnError,
        into: Option<String>,
    },
    Coalesce {
        field: String,
        default: Option<Value>,
        from: Vec<String>,
        treat_empty_string_as_null: bool,
    },
    Split {
        field: String,
        delimiter: String,
        trim: bool,
        into: Option<String>,
    },
    Join {
        field: String,
        delimiter: String,
        into: Option<String>,
    },
    JsonEncode {
        fields: Vec<String>,
    },
    Lookup {
        index: HashMap<String, Map<String, Value>>,
        on_record: String,
        add: Vec<(String, String)>,
        on_missing: LookupOnMissing,
    },
    Custom(Arc<dyn Fn(Value) -> Value + Send + Sync>),
}

Pre-compiled form of a RecordTransform.

Stored inside a source (e.g. the REST source’s RestStream) so that regex patterns are compiled exactly once (at construction time) rather than once per record.

Non-exhaustive for the same reason as RecordTransform: new transforms are added additively.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Flatten

Available on crate feature transform-flatten only.

Fields

separator: String

RenameKeys

Available on crate feature transform-rename-keys only.

Fields

re: Regex

replacement: String

KeysCase

Available on crate feature transform-keys-case only.

Fields

mode: KeyCaseMode

Select

Available on crate feature transform-select only.

Fields

fields: Vec<String>

Drop

Available on crate feature transform-drop only.

Fields

fields: Vec<String>

Set

Available on crate feature transform-set only.

Fields

values: Map<String, Value>

RenameField

Available on crate feature transform-rename-field only.

Fields

fields: Vec<(String, String)>

(from, to) pairs sorted by from, so application is deterministic regardless of the source HashMap’s iteration order.

Cast

Available on crate feature transform-cast only.

Fields

fields: HashMap<String, CastType>

on_error: CastOnError

Redact

Available on crate feature transform-redact only.

Fields

fields: Vec<String>

mask: Value

ValueCase

Available on crate feature transform-value-case only.

Fields

fields: Vec<String>

mode: ValueCaseMode

SpellSymbols

Available on crate feature transform-spell-symbols only.

Fields

replacements: Vec<(String, String)>

(from, to) pairs sorted by descending from.len() so longer patterns win when prefixes overlap (e.g. "<=" before "<").

separator: String

Hash

Available on crate feature transform-hash only.

Fields

fields: Vec<String>

algorithm: HashAlgorithm

encoding: HashEncoding

salt: Option<String>

into: Option<String>

JsonParse

Available on crate feature transform-json-parse only.

Fields

fields: Vec<String>

on_error: JsonParseOnError

into: Option<String>

Coalesce

Available on crate feature transform-coalesce only.

Fields

field: String

default: Option<Value>

from: Vec<String>

treat_empty_string_as_null: bool

Split

Available on crate feature transform-split-join only.

Fields

field: String

delimiter: String

trim: bool

into: Option<String>

Join

Available on crate feature transform-split-join only.

Fields

field: String

delimiter: String

into: Option<String>

JsonEncode

Available on crate feature transform-json-encode only.

Fields

fields: Vec<String>

Lookup

Available on crate feature transform-lookup only.

Fields

index: HashMap<String, Map<String, Value>>

Reference rows indexed by the scalar-string form of on_ref (first row wins on duplicate keys).

on_record: String

add: Vec<(String, String)>

on_missing: LookupOnMissing

Custom(Arc<dyn Fn(Value) -> Value + Send + Sync>)

Trait Implementations

impl Clone for CompiledTransform

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.