Struct parquet::decoding::DictDecoder [−][src]
pub struct DictDecoder<T: DataType> { /* fields omitted */ }
Expand description
Dictionary decoder.
The dictionary encoding builds a dictionary of values encountered in a given column.
The dictionary is be stored in a dictionary page per column chunk.
See DictEncoder
for more information.
Implementations
impl<T: DataType> DictDecoder<T>
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impl<T: DataType> DictDecoder<T>
[src]Trait Implementations
impl<T: DataType> Decoder<T> for DictDecoder<T>
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impl<T: DataType> Decoder<T> for DictDecoder<T>
[src]fn values_left(&self) -> usize
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fn values_left(&self) -> usize
[src]Number of values left in this decoder stream
fn set_data(&mut self, data: ByteBufferPtr, num_values: usize) -> Result<()>
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fn set_data(&mut self, data: ByteBufferPtr, num_values: usize) -> Result<()>
[src]Sets the data to decode to be data
, which should contain num_values
of values
to decode. Read more
Auto Trait Implementations
impl<T> RefUnwindSafe for DictDecoder<T> where
<T as DataType>::T: RefUnwindSafe,
<T as DataType>::T: RefUnwindSafe,
impl<T> Send for DictDecoder<T> where
<T as DataType>::T: Send,
<T as DataType>::T: Send,
impl<T> Sync for DictDecoder<T> where
<T as DataType>::T: Sync,
<T as DataType>::T: Sync,
impl<T> Unpin for DictDecoder<T> where
<T as DataType>::T: Unpin,
<T as DataType>::T: Unpin,
impl<T> UnwindSafe for DictDecoder<T> where
<T as DataType>::T: UnwindSafe,
<T as DataType>::T: UnwindSafe,
Blanket Implementations
impl<T> BorrowMut<T> for T where
T: ?Sized,
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impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
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pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,