Struct parquet::decoding::DeltaByteArrayDecoder [−][src]
pub struct DeltaByteArrayDecoder<T: DataType> { /* fields omitted */ }
Delta byte array decoder.
Prefix lengths are encoded using DELTA_BINARY_PACKED
encoding, Suffixes are stored
using DELTA_LENGTH_BYTE_ARRAY
encoding.
See DeltaByteArrayEncoder
for more
information.
Methods
impl<T: DataType> DeltaByteArrayDecoder<T>
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impl<T: DataType> DeltaByteArrayDecoder<T>
Trait Implementations
impl<'m, T: DataType> Decoder<T> for DeltaByteArrayDecoder<T>
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impl<'m, T: DataType> Decoder<T> for DeltaByteArrayDecoder<T>
fn set_data(&mut self, _: ByteBufferPtr, _: usize) -> Result<()>
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fn set_data(&mut self, _: ByteBufferPtr, _: usize) -> Result<()>
Sets the data to decode to be data
, which should contain num_values
of values to decode. Read more
fn get(&mut self, _: &mut [T::T]) -> Result<usize>
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fn get(&mut self, _: &mut [T::T]) -> Result<usize>
Consumes values from this decoder and write the results to buffer
. This will try to fill up buffer
. Read more
fn values_left(&self) -> usize
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fn values_left(&self) -> usize
Returns the number of values left in this decoder stream.
fn encoding(&self) -> Encoding
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fn encoding(&self) -> Encoding
Returns the encoding for this decoder.
impl Decoder<ByteArrayType> for DeltaByteArrayDecoder<ByteArrayType>
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impl Decoder<ByteArrayType> for DeltaByteArrayDecoder<ByteArrayType>
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<()>
Sets the data to decode to be data
, which should contain num_values
of values to decode. Read more
fn get(&mut self, buffer: &mut [ByteArray]) -> Result<usize>
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fn get(&mut self, buffer: &mut [ByteArray]) -> Result<usize>
Consumes values from this decoder and write the results to buffer
. This will try to fill up buffer
. Read more
fn values_left(&self) -> usize
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fn values_left(&self) -> usize
Returns the number of values left in this decoder stream.
fn encoding(&self) -> Encoding
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fn encoding(&self) -> Encoding
Returns the encoding for this decoder.
impl Decoder<FixedLenByteArrayType> for DeltaByteArrayDecoder<FixedLenByteArrayType>
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impl Decoder<FixedLenByteArrayType> for DeltaByteArrayDecoder<FixedLenByteArrayType>
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<()>
Sets the data to decode to be data
, which should contain num_values
of values to decode. Read more
fn get(&mut self, buffer: &mut [ByteArray]) -> Result<usize>
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fn get(&mut self, buffer: &mut [ByteArray]) -> Result<usize>
Consumes values from this decoder and write the results to buffer
. This will try to fill up buffer
. Read more
fn values_left(&self) -> usize
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fn values_left(&self) -> usize
Returns the number of values left in this decoder stream.
fn encoding(&self) -> Encoding
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fn encoding(&self) -> Encoding
Returns the encoding for this decoder.
Auto Trait Implementations
impl<T> !Send for DeltaByteArrayDecoder<T>
impl<T> !Send for DeltaByteArrayDecoder<T>
impl<T> !Sync for DeltaByteArrayDecoder<T>
impl<T> !Sync for DeltaByteArrayDecoder<T>