Struct parquet::file::metadata::ColumnChunkMetaData [−][src]
pub struct ColumnChunkMetaData { /* fields omitted */ }
Metadata for a column chunk.
Methods
impl ColumnChunkMetaData
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impl ColumnChunkMetaData
Represents common operations for a column chunk.
pub fn file_path(&self) -> Option<&String>
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pub fn file_path(&self) -> Option<&String>
File where the column chunk is stored.
If not set, assumed to belong to the same file as the metadata. This path is relative to the current file.
pub fn file_offset(&self) -> i64
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pub fn file_offset(&self) -> i64
Byte offset in file_path()
.
pub fn column_type(&self) -> Type
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pub fn column_type(&self) -> Type
Type of this column. Must be primitive.
pub fn column_path(&self) -> &ColumnPath
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pub fn column_path(&self) -> &ColumnPath
Path (or identifier) of this column.
pub fn column_descr(&self) -> &ColumnDescriptor
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pub fn column_descr(&self) -> &ColumnDescriptor
Descriptor for this column.
pub fn column_descr_ptr(&self) -> ColumnDescPtr
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pub fn column_descr_ptr(&self) -> ColumnDescPtr
Reference counted clone of descriptor for this column.
pub fn encodings(&self) -> &Vec<Encoding>
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pub fn encodings(&self) -> &Vec<Encoding>
All encodings used for this column.
pub fn num_values(&self) -> i64
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pub fn num_values(&self) -> i64
Total number of values in this column chunk.
pub fn compression(&self) -> Compression
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pub fn compression(&self) -> Compression
Compression for this column.
pub fn compressed_size(&self) -> i64
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pub fn compressed_size(&self) -> i64
Returns the total compressed data size of this column chunk.
pub fn uncompressed_size(&self) -> i64
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pub fn uncompressed_size(&self) -> i64
Returns the total uncompressed data size of this column chunk.
pub fn data_page_offset(&self) -> i64
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pub fn data_page_offset(&self) -> i64
Returns the offset for the column data.
pub fn has_index_page(&self) -> bool
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pub fn has_index_page(&self) -> bool
Returns true
if this column chunk contains a index page, false
otherwise.
pub fn index_page_offset(&self) -> Option<i64>
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pub fn index_page_offset(&self) -> Option<i64>
Returns the offset for the index page.
pub fn has_dictionary_page(&self) -> bool
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pub fn has_dictionary_page(&self) -> bool
Returns true
if this column chunk contains a dictionary page, false
otherwise.
pub fn dictionary_page_offset(&self) -> Option<i64>
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pub fn dictionary_page_offset(&self) -> Option<i64>
Returns the offset for the dictionary page, if any.
pub fn statistics(&self) -> Option<&Statistics>
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pub fn statistics(&self) -> Option<&Statistics>
Returns statistics that are set for this column chunk,
or None
if no statistics are available.
Auto Trait Implementations
impl !Send for ColumnChunkMetaData
impl !Send for ColumnChunkMetaData
impl !Sync for ColumnChunkMetaData
impl !Sync for ColumnChunkMetaData