Enum Value 

pub enum Value {
    Null,
    Integer(i64),
    Real(f64),
    Text(String),
    Blob(Vec<u8>),
    Geometry(Vec<u8>),
}

Owned dynamic value used for feature properties.

Value mirrors SQLite’s dynamic types and is the primary property container in this crate. Access is explicit: GpkgFeature::property returns Option<Value>, and callers convert using try_into() or pattern matching.

Common conversions:

• Integers: i64, i32, u64, etc.
• Floats: f64, f32
• Text: String, &str
• Geometry: wkb::reader::Wkb<'_> from Value::Geometry or Value::Blob

use rusqlite_gpkg::Value;

let value = Value::Text("alpha".to_string());
let name: &str = (&value).try_into()?;

Variants

Null

Integer(i64)

Real(f64)

Text(String)

Blob(Vec<u8>)

Geometry(Vec<u8>)

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl From<&str> for Value

fn from(value: &str) -> Self

Converts to this type from the input type.

impl<T: Into<Value>> From<Option<T>> for Value

fn from(value: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(value: String) -> Self

Converts to this type from the input type.

impl From<Value> for Value

fn from(value: Value) -> Self

Converts to this type from the input type.

impl From<Value> for Value

fn from(value: Value) -> Self

Converts to this type from the input type.

impl<'a> From<ValueRef<'a>> for Value

fn from(value: ValueRef<'a>) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(value: bool) -> Self

Converts to this type from the input type.

impl From<f32> for Value

fn from(value: f32) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i16> for Value

fn from(value: i16) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(value: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(value: i64) -> Self

Converts to this type from the input type.

impl From<i8> for Value

fn from(value: i8) -> Self

Converts to this type from the input type.

impl From<isize> for Value

fn from(value: isize) -> Self

Converts to this type from the input type.

impl From<u16> for Value

fn from(value: u16) -> Self

Converts to this type from the input type.

impl From<u32> for Value

fn from(value: u32) -> Self

Converts to this type from the input type.

impl From<u64> for Value

fn from(value: u64) -> Self

Converts to this type from the input type.

impl From<u8> for Value

fn from(value: u8) -> Self

Converts to this type from the input type.

impl From<usize> for Value

fn from(value: usize) -> Self

Converts to this type from the input type.

impl PartialEq for Value

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ToSql for Value

fn to_sql(&self) -> Result<ToSqlOutput<'_>>

Converts Rust value to SQLite value

impl<'a> TryFrom<&'a Value> for &'a str

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.

impl<T> TryFrom<&Value> for Option<T>

where T: for<'a> TryFrom<&'a Value, Error = GpkgError>,

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> TryFrom<&'a Value> for Wkb<'a>

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for bool

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for f32

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for f64

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for i16

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for i32

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for i64

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for i8

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for isize

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for u16

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for u32

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for u64

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for u8

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for usize

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl<T> TryFrom<Value> for Option<T>

where T: for<'a> TryFrom<&'a Value, Error = GpkgError>,

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for String

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for bool

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for f32

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for f64

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i16

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i32

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i64

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i8

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for isize

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u16

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u32

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u64

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u8

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for usize

type Error = GpkgError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl StructuralPartialEq for Value