com.facebook.presto.spi.type

Class FunctionType

java.lang.Object

com.facebook.presto.spi.type.FunctionType

All Implemented Interfaces:

Type

public class FunctionType
extends Object
implements Type

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME

Constructor Summary

Constructors

Constructor and Description
FunctionType(List<Type> argumentTypes, Type returnType)

Method Summary

Modifier and Type	Method and Description
void	appendTo(Block block, int position, BlockBuilder blockBuilder) Append the value at position in block to blockBuilder.
int	compareTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition) Compare the values in the specified block at the specified positions equal.
BlockBuilder	createBlockBuilder(BlockBuilderStatus blockBuilderStatus, int expectedEntries) Creates the preferred block builder for this type.
BlockBuilder	createBlockBuilder(BlockBuilderStatus blockBuilderStatus, int expectedEntries, int expectedBytesPerEntry) Creates the preferred block builder for this type.
boolean	equalTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition) Are the values in the specified blocks at the specified positions equal?
List<Type>	getArgumentTypes()
boolean	getBoolean(Block block, int position) Gets the value at the block position as a boolean.
String	getDisplayName() Returns the name of this type that should be displayed to end-users.
double	getDouble(Block block, int position) Gets the value at the block position as a double.
Class<?>	getJavaType() Gets the Java class type used to represent this value on the stack during expression execution.
long	getLong(Block block, int position) Gets the value at the block position as a long.
Object	getObject(Block block, int position) Gets the value at the block position as an Object.
Object	getObjectValue(ConnectorSession session, Block block, int position) Gets an object representation of the type value in the block position.
Type	getReturnType()
io.airlift.slice.Slice	getSlice(Block block, int position) Gets the value at the block position as a Slice.
List<Type>	getTypeParameters() For parameterized types returns the list of parameters.
TypeSignature	getTypeSignature() Gets the name of this type which must be case insensitive globally unique.
long	hash(Block block, int position) Calculates the hash code of the value at the specified position in the specified block.
boolean	isComparable() True if the type supports equalTo and hash.
boolean	isOrderable() True if the type supports compareTo.
void	writeBoolean(BlockBuilder blockBuilder, boolean value) Writes the boolean value into the BlockBuilder.
void	writeDouble(BlockBuilder blockBuilder, double value) Writes the double value into the BlockBuilder.
void	writeLong(BlockBuilder blockBuilder, long value) Writes the long value into the BlockBuilder.
void	writeObject(BlockBuilder blockBuilder, Object value) Writes the Object value into the BlockBuilder.
void	writeSlice(BlockBuilder blockBuilder, io.airlift.slice.Slice value) Writes the Slice value into the BlockBuilder.
void	writeSlice(BlockBuilder blockBuilder, io.airlift.slice.Slice value, int offset, int length) Writes the Slice value into the BlockBuilder.

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

FunctionType

public FunctionType(List<Type> argumentTypes,
                    Type returnType)

Method Detail

getReturnType

public Type getReturnType()

getArgumentTypes

public List<Type> getArgumentTypes()

getTypeParameters

public List<Type> getTypeParameters()

Description copied from interface: Type

For parameterized types returns the list of parameters.

Specified by:

getTypeParameters in interface Type

getTypeSignature

public final TypeSignature getTypeSignature()

Description copied from interface: Type

Gets the name of this type which must be case insensitive globally unique. The name of a user defined type must be a legal identifier in Presto.

Specified by:

getTypeSignature in interface Type

getDisplayName

public String getDisplayName()

Description copied from interface: Type

Returns the name of this type that should be displayed to end-users.

Specified by:

getDisplayName in interface Type

getJavaType

public final Class<?> getJavaType()

Description copied from interface: Type

Gets the Java class type used to represent this value on the stack during expression execution.

Currently, this must be boolean, long, double, Slice or Block.

Specified by:

getJavaType in interface Type

isComparable

public boolean isComparable()

Description copied from interface: Type

True if the type supports equalTo and hash.

Specified by:

isComparable in interface Type

isOrderable

public boolean isOrderable()

Description copied from interface: Type

True if the type supports compareTo.

Specified by:

isOrderable in interface Type

hash

public long hash(Block block,
                 int position)

Description copied from interface: Type

Calculates the hash code of the value at the specified position in the specified block.

Specified by:

hash in interface Type

equalTo

public boolean equalTo(Block leftBlock,
                       int leftPosition,
                       Block rightBlock,
                       int rightPosition)

Description copied from interface: Type

Are the values in the specified blocks at the specified positions equal?

This method assumes input is not null.

Specified by:

equalTo in interface Type

compareTo

public int compareTo(Block leftBlock,
                     int leftPosition,
                     Block rightBlock,
                     int rightPosition)

Description copied from interface: Type

Compare the values in the specified block at the specified positions equal.

Specified by:

compareTo in interface Type

getBoolean

public boolean getBoolean(Block block,
                          int position)

Description copied from interface: Type

Gets the value at the block position as a boolean.

Specified by:

getBoolean in interface Type

writeBoolean

public void writeBoolean(BlockBuilder blockBuilder,
                         boolean value)

Description copied from interface: Type

Writes the boolean value into the BlockBuilder.

Specified by:

writeBoolean in interface Type

getLong

public long getLong(Block block,
                    int position)

Description copied from interface: Type

Gets the value at the block position as a long.

Specified by:

getLong in interface Type

writeLong

public void writeLong(BlockBuilder blockBuilder,
                      long value)

Description copied from interface: Type

Writes the long value into the BlockBuilder.

Specified by:

writeLong in interface Type

getDouble

public double getDouble(Block block,
                        int position)

Description copied from interface: Type

Gets the value at the block position as a double.

Specified by:

getDouble in interface Type

writeDouble

public void writeDouble(BlockBuilder blockBuilder,
                        double value)

Description copied from interface: Type

Writes the double value into the BlockBuilder.

Specified by:

writeDouble in interface Type

getSlice

public io.airlift.slice.Slice getSlice(Block block,
                                       int position)

Description copied from interface: Type

Gets the value at the block position as a Slice.

Specified by:

getSlice in interface Type

writeSlice

public void writeSlice(BlockBuilder blockBuilder,
                       io.airlift.slice.Slice value)

Description copied from interface: Type

Writes the Slice value into the BlockBuilder.

Specified by:

writeSlice in interface Type

writeSlice

public void writeSlice(BlockBuilder blockBuilder,
                       io.airlift.slice.Slice value,
                       int offset,
                       int length)

Description copied from interface: Type

Writes the Slice value into the BlockBuilder.

Specified by:

writeSlice in interface Type

getObject

public Object getObject(Block block,
                        int position)

Description copied from interface: Type

Gets the value at the block position as an Object.

Specified by:

getObject in interface Type

writeObject

public void writeObject(BlockBuilder blockBuilder,
                        Object value)

Description copied from interface: Type

Writes the Object value into the BlockBuilder.

Specified by:

writeObject in interface Type

getObjectValue

public Object getObjectValue(ConnectorSession session,
                             Block block,
                             int position)

Description copied from interface: Type

Gets an object representation of the type value in the block position. This is the value returned to the user via the REST endpoint and therefore must be JSON serializable.

Specified by:

getObjectValue in interface Type

appendTo

public void appendTo(Block block,
                     int position,
                     BlockBuilder blockBuilder)

Description copied from interface: Type

Append the value at position in block to blockBuilder.

Specified by:

appendTo in interface Type

createBlockBuilder

public 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

createBlockBuilder

public BlockBuilder createBlockBuilder(BlockBuilderStatus blockBuilderStatus,
                                       int expectedEntries)

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