Trait FromValue 

pub trait FromValue {
    // Required method
    fn from_value(v: Value) -> Result<Self>
       where Self: Sized;

    // Provided method
    fn get(v: Value) -> Option<Self>
       where Self: Sized { ... }
}

Required Methods

fn from_value(v: Value) -> Result<Self>

where Self: Sized,

attempt to cast v to the type of self using any reasonable means

Provided Methods

fn get(v: Value) -> Option<Self>

where Self: Sized,

extract the type of self from v if the type of v is equivelent to the type of self, otherwise return None.

Implementations on Foreign Types

impl FromValue for bool

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for f32

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for f64

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for i8

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for i16

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for i32

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for i64

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for u8

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for u16

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for u32

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for u64

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for usize

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for String

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for Duration

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for ArcStr

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for Bytes

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for DateTime<Utc>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for CompactString

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for Path

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for Decimal

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl FromValue for Uuid

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<K: FromValue + Eq + Hash, S: BuildHasher + Default> FromValue for HashSet<K, S>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<K: FromValue + Eq + Hash, S: BuildHasher + Default> FromValue for IndexSet<K, S>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<K: FromValue + Eq + Hash, V: FromValue, S: BuildHasher + Default> FromValue for HashMap<K, V, S>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<K: FromValue + Eq + Hash, V: FromValue, S: BuildHasher + Default> FromValue for IndexMap<K, V, S>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<K: FromValue + Ord> FromValue for BTreeSet<K>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<K: FromValue + Ord, V: FromValue> FromValue for BTreeMap<K, V>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<T> FromValue for BitFlags<T>

where T: BitFlag, <T as RawBitFlags>::Numeric: FromValue,

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<T: FromValue + Send + Sync + 'static> FromValue for Pooled<Vec<T>>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<T: FromValue> FromValue for Option<T>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<T: FromValue> FromValue for Vec<T>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<T: FromValue, U: FromValue> FromValue for (T, U)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue> FromValue for (T, U, V)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue> FromValue for (T, U, V, W)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue> FromValue for (T, U, V, W, X)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue> FromValue for (T, U, V, W, X, Y)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue> FromValue for (T, U, V, W, X, Y, Z)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue> FromValue for (T, U, V, W, X, Y, Z, A)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue, D: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C, D)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue, D: FromValue, E: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C, D, E)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue, D: FromValue, E: FromValue, F: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C, D, E, F)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue, D: FromValue, E: FromValue, F: FromValue, G: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C, D, E, F, G)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue, D: FromValue, E: FromValue, F: FromValue, G: FromValue, H: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C, D, E, F, G, H)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue, D: FromValue, E: FromValue, F: FromValue, G: FromValue, H: FromValue, I: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C, D, E, F, G, H, I)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue, D: FromValue, E: FromValue, F: FromValue, G: FromValue, H: FromValue, I: FromValue, J: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C, D, E, F, G, H, I, J)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue, D: FromValue, E: FromValue, F: FromValue, G: FromValue, H: FromValue, I: FromValue, J: FromValue, K: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C, D, E, F, G, H, I, J, K)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue, D: FromValue, E: FromValue, F: FromValue, G: FromValue, H: FromValue, I: FromValue, J: FromValue, K: FromValue, L: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C, D, E, F, G, H, I, J, K, L)

fn from_value(v: Value) -> Result<Self>

impl<T: FromValue, U: FromValue, V: FromValue, W: FromValue, X: FromValue, Y: FromValue, Z: FromValue, A: FromValue, B: FromValue, C: FromValue, D: FromValue, E: FromValue, F: FromValue, G: FromValue, H: FromValue, I: FromValue, J: FromValue, K: FromValue, L: FromValue, M: FromValue> FromValue for (T, U, V, W, X, Y, Z, A, B, C, D, E, F, G, H, I, J, K, L, M)

fn from_value(v: Value) -> Result<Self>

impl<const S: usize, T: FromValue> FromValue for [T; S]

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

impl<const S: usize, T: FromValue> FromValue for SmallVec<[T; S]>

fn from_value(v: Value) -> Result<Self>

fn get(v: Value) -> Option<Self>

Implementors

impl FromValue for ValArray

impl FromValue for Value