pub enum ValueRef<'a> {
Null,
Integer(i64),
Real(f64),
Text(&'a [u8]),
Blob(&'a [u8]),
}
Expand description
A non-owning dynamic type value. Typically, the memory backing this value is owned by SQLite.
See Value
for an owning dynamic type value.
Variants§
Null
The value is a NULL
value.
Integer(i64)
The value is a signed integer.
Real(f64)
The value is a floating point number.
Text(&'a [u8])
The value is a text string.
Blob(&'a [u8])
The value is a blob of data
Implementations§
Source§impl<'a> ValueRef<'a>
impl<'a> ValueRef<'a>
Sourcepub fn as_i64(&self) -> FromSqlResult<i64>
pub fn as_i64(&self) -> FromSqlResult<i64>
If self
is case Integer
, returns the integral value. Otherwise,
returns Err(Error::InvalidColumnType)
.
Sourcepub fn as_i64_or_null(&self) -> FromSqlResult<Option<i64>>
pub fn as_i64_or_null(&self) -> FromSqlResult<Option<i64>>
If self
is case Null
returns None.
If self
is case Integer
, returns the integral value.
Otherwise, returns Err(Error::InvalidColumnType)
.
Sourcepub fn as_f64(&self) -> FromSqlResult<f64>
pub fn as_f64(&self) -> FromSqlResult<f64>
If self
is case Real
, returns the floating point value. Otherwise,
returns Err(Error::InvalidColumnType)
.
Sourcepub fn as_f64_or_null(&self) -> FromSqlResult<Option<f64>>
pub fn as_f64_or_null(&self) -> FromSqlResult<Option<f64>>
If self
is case Null
returns None.
If self
is case Real
, returns the floating point value.
Otherwise, returns Err(Error::InvalidColumnType)
.
Sourcepub fn as_str(&self) -> FromSqlResult<&'a str>
pub fn as_str(&self) -> FromSqlResult<&'a str>
If self
is case Text
, returns the string value. Otherwise, returns
Err(Error::InvalidColumnType)
.
Sourcepub fn as_str_or_null(&self) -> FromSqlResult<Option<&'a str>>
pub fn as_str_or_null(&self) -> FromSqlResult<Option<&'a str>>
If self
is case Null
returns None.
If self
is case Text
, returns the string value.
Otherwise, returns Err(Error::InvalidColumnType)
.
Sourcepub fn as_blob(&self) -> FromSqlResult<&'a [u8]>
pub fn as_blob(&self) -> FromSqlResult<&'a [u8]>
If self
is case Blob
, returns the byte slice. Otherwise, returns
Err(Error::InvalidColumnType)
.
Sourcepub fn as_blob_or_null(&self) -> FromSqlResult<Option<&'a [u8]>>
pub fn as_blob_or_null(&self) -> FromSqlResult<Option<&'a [u8]>>
If self
is case Null
returns None.
If self
is case Blob
, returns the byte slice.
Otherwise, returns Err(Error::InvalidColumnType)
.
Sourcepub fn as_bytes(&self) -> FromSqlResult<&'a [u8]>
pub fn as_bytes(&self) -> FromSqlResult<&'a [u8]>
Returns the byte slice that makes up this ValueRef
if it’s either
ValueRef::Blob
or ValueRef::Text
.
Sourcepub fn as_bytes_or_null(&self) -> FromSqlResult<Option<&'a [u8]>>
pub fn as_bytes_or_null(&self) -> FromSqlResult<Option<&'a [u8]>>
If self
is case Null
returns None.
If self
is ValueRef::Blob
or ValueRef::Text
returns the byte
slice that makes up this value