Package io.trino.execution.buffer

Class PagesSerdeUtil

java.lang.Object

io.trino.execution.buffer.PagesSerdeUtil

public final class PagesSerdeUtil
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final long	NO_CHECKSUM	Special checksum value used to verify configuration consistency across nodes (all nodes need to have data integrity configured the same way).

Method Summary

Modifier and Type	Method	Description
static long	calculateChecksum(List<io.airlift.slice.Slice> pages)
static int	getSerializedPagePositionCount(io.airlift.slice.Slice serializedPage)
static int	getSerializedPageUncompressedSizeInBytes(io.airlift.slice.Slice serializedPage)
static boolean	isSerializedPageCompressed(io.airlift.slice.Slice serializedPage)
static boolean	isSerializedPageEncrypted(io.airlift.slice.Slice serializedPage)
static Iterator<Page>	readPages(PageDeserializer deserializer, InputStream inputStream)
static io.airlift.slice.Slice	readSerializedPage(io.airlift.slice.Slice headerSlice, InputStream inputStream)
static Iterator<io.airlift.slice.Slice>	readSerializedPages(InputStream inputStream)
static long	writePages(PageSerializer serializer, io.airlift.slice.SliceOutput sliceOutput, Page... pages)
static long	writePages(PageSerializer serializer, io.airlift.slice.SliceOutput sliceOutput, Iterator<Page> pages)

Methods inherited from class java.lang.Object

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

Field Details

NO_CHECKSUM

public static final long NO_CHECKSUM

Special checksum value used to verify configuration consistency across nodes (all nodes need to have data integrity configured the same way). Note: It's not just 0, so that hypothetical zero-ed out data is not treated as valid payload with no checksum.

See Also:

• Constant Field Values

Method Details

calculateChecksum

public static long calculateChecksum(List<io.airlift.slice.Slice> pages)

writePages

public static long writePages(PageSerializer serializer,
 io.airlift.slice.SliceOutput sliceOutput,
 Page... pages)

writePages

public static long writePages(PageSerializer serializer,
 io.airlift.slice.SliceOutput sliceOutput,
 Iterator<Page> pages)

readPages

public static Iterator<Page> readPages(PageDeserializer deserializer,
 InputStream inputStream)

getSerializedPagePositionCount

public static int getSerializedPagePositionCount(io.airlift.slice.Slice serializedPage)

getSerializedPageUncompressedSizeInBytes

public static int getSerializedPageUncompressedSizeInBytes(io.airlift.slice.Slice serializedPage)

isSerializedPageEncrypted

public static boolean isSerializedPageEncrypted(io.airlift.slice.Slice serializedPage)

isSerializedPageCompressed

public static boolean isSerializedPageCompressed(io.airlift.slice.Slice serializedPage)

readSerializedPages

public static Iterator<io.airlift.slice.Slice> readSerializedPages(InputStream inputStream)

readSerializedPage

public static io.airlift.slice.Slice readSerializedPage(io.airlift.slice.Slice headerSlice,
 InputStream inputStream)
                                                 throws IOException

Throws:

IOException