Package io.trino.parquet.reader

Class PageReader

java.lang.Object

io.trino.parquet.reader.PageReader

public final class PageReader
extends Object

Constructor Summary

Constructors

Constructor	Description
PageReader(org.apache.parquet.format.CompressionCodec codec, Iterator<? extends Page> compressedPages, boolean hasOnlyDictionaryEncodedPages, boolean hasNoNulls)

Method Summary

Modifier and Type	Method	Description
boolean	arePagesCompressed()
static PageReader	createPageReader(ChunkedInputStream columnChunk, org.apache.parquet.hadoop.metadata.ColumnChunkMetaData metadata, org.apache.parquet.column.ColumnDescriptor columnDescriptor, org.apache.parquet.internal.column.columnindex.OffsetIndex offsetIndex, Optional<String> fileCreatedBy)
DataPage	getNextPage()
boolean	hasNext()
boolean	hasNoNulls()
boolean	hasOnlyDictionaryEncodedPages()
DictionaryPage	readDictionaryPage()
DataPage	readPage()
void	skipNextPage()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PageReader

public PageReader(org.apache.parquet.format.CompressionCodec codec,
 Iterator<? extends Page> compressedPages,
 boolean hasOnlyDictionaryEncodedPages,
 boolean hasNoNulls)

Method Details

createPageReader

public static PageReader createPageReader(ChunkedInputStream columnChunk,
 org.apache.parquet.hadoop.metadata.ColumnChunkMetaData metadata,
 org.apache.parquet.column.ColumnDescriptor columnDescriptor,
 @Nullable
 org.apache.parquet.internal.column.columnindex.OffsetIndex offsetIndex,
 Optional<String> fileCreatedBy)

hasNoNulls

public boolean hasNoNulls()

hasOnlyDictionaryEncodedPages

public boolean hasOnlyDictionaryEncodedPages()

readPage

public DataPage readPage()

readDictionaryPage

public DictionaryPage readDictionaryPage()

hasNext

public boolean hasNext()

getNextPage

public DataPage getNextPage()

skipNextPage

public void skipNextPage()

arePagesCompressed

public boolean arePagesCompressed()