Enum MissingValueInterpretation 

#[non_exhaustive]
pub enum MissingValueInterpretation {
    Unspecified,
    NullValue,
    DefaultValue,
    UnknownValue(UnknownValue),
}

An enum to indicate how to interpret missing values of fields that are present in user schema but missing in rows. A missing value can represent a NULL or a column default value defined in BigQuery table schema.

Working with unknown values

This enum is defined as #[non_exhaustive] because Google Cloud may add additional enum variants at any time. Adding new variants is not considered a breaking change. Applications should write their code in anticipation of:

• New values appearing in future releases of the client library, and
• New values received dynamically, without application changes.

Please consult the Working with enums section in the user guide for some guidelines.

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.

Unspecified

Invalid missing value interpretation. Requests with this value will be rejected.

NullValue

Missing value is interpreted as NULL.

DefaultValue

Missing value is interpreted as column default value if declared in the table schema, NULL otherwise.

UnknownValue(UnknownValue)

If set, the enum was initialized with an unknown value.

Applications can examine the value using MissingValueInterpretation::value or MissingValueInterpretation::name.

Implementations

impl MissingValueInterpretation

pub fn value(&self) -> Option<i32>

Gets the enum value.

Returns None if the enum contains an unknown value deserialized from the string representation of enums.

pub fn name(&self) -> Option<&str>

Gets the enum value as a string.

Returns None if the enum contains an unknown value deserialized from the integer representation of enums.

Trait Implementations

impl Clone for MissingValueInterpretation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MissingValueInterpretation

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MissingValueInterpretation

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MissingValueInterpretation

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for MissingValueInterpretation

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl From<&str> for MissingValueInterpretation

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<i32> for MissingValueInterpretation

fn from(value: i32) -> Self

Converts to this type from the input type.

impl PartialEq for MissingValueInterpretation

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for MissingValueInterpretation

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MissingValueInterpretation