Interface FixedWidthType

All Superinterfaces:

Type

All Known Implementing Classes:

AbstractIntType, AbstractLongType, BigintType, BooleanType, DateType, DecimalType, DoubleType, IntegerType, RealType, SmallintType, TimestampType, TimestampWithTimeZoneType, TimeType, TimeWithTimeZoneType, TinyintType, UuidType

public interface FixedWidthType
extends Type

FixedWidthType is a type that has a fixed size for every value.

Nested Class Summary

Nested classes/interfaces inherited from interface io.trino.spi.type.Type

Type.Range

Method Summary

Modifier and Type	Method	Description
default BlockBuilder	createBlockBuilder(BlockBuilderStatus blockBuilderStatus, int expectedEntries, int expectedBytesPerEntry)	Creates the preferred block builder for this type.
BlockBuilder	createFixedSizeBlockBuilder(int positionCount)	Creates a block builder for this type sized to hold the specified number of positions.
int	getFixedSize()	Gets the size of a value of this type in bytes.
default int	getFlatVariableWidthSize(Block block, int position)	Returns the variable width size of the value at the specified position when written to a flat buffer.
default boolean	isFlatVariableWidth()	Returns true if this type is variable width when written to a flat buffer.
default int	relocateFlatVariableWidthOffsets(byte[] fixedSizeSlice, int fixedSizeOffset, byte[] variableSizeSlice, int variableSizeOffset)	Update the variable width offsets recorded in the value.

Methods inherited from interface io.trino.spi.type.Type

appendTo, createBlockBuilder, createNullBlock, getBaseName, getBoolean, getDiscreteValues, getDisplayName, getDouble, getFlatFixedSize, getJavaType, getLong, getNextValue, getObject, getObjectValue, getPreviousValue, getRange, getSlice, getTypeId, getTypeOperatorDeclaration, getTypeParameters, getTypeSignature, getValueBlockType, isComparable, isOrderable, writeBoolean, writeDouble, writeLong, writeObject, writeSlice, writeSlice

Method Details

getFixedSize

int getFixedSize()

Gets the size of a value of this type in bytes. All values of a FixedWidthType are the same size.

createBlockBuilder

default BlockBuilder createBlockBuilder(BlockBuilderStatus blockBuilderStatus,
 int expectedEntries,
 int expectedBytesPerEntry)

Description copied from interface: Type

Creates the preferred block builder for this type. This is the builder used to store values after an expression projection within the query.

Specified by:

createBlockBuilder in interface Type

createFixedSizeBlockBuilder

BlockBuilder createFixedSizeBlockBuilder(int positionCount)

Creates a block builder for this type sized to hold the specified number of positions.

isFlatVariableWidth

default boolean isFlatVariableWidth()

Description copied from interface: Type

Returns true if this type is variable width when written to a flat buffer.

Specified by:

isFlatVariableWidth in interface Type

getFlatVariableWidthSize

default int getFlatVariableWidthSize(Block block,
 int position)

Description copied from interface: Type

Returns the variable width size of the value at the specified position when written to a flat buffer.

Specified by:

getFlatVariableWidthSize in interface Type

relocateFlatVariableWidthOffsets

default int relocateFlatVariableWidthOffsets(byte[] fixedSizeSlice,
 int fixedSizeOffset,
 byte[] variableSizeSlice,
 int variableSizeOffset)

Description copied from interface: Type

Update the variable width offsets recorded in the value. This method is called after the value has been moved to a new location, and therefore the offsets need to be updated. Returns the length of the variable width data, so container types can update their offsets.

Specified by:

relocateFlatVariableWidthOffsets in interface Type

Returns:

the length of the variable width data