com.facebook.presto.spi.type

Class AbstractType

java.lang.Object

com.facebook.presto.spi.type.AbstractType

All Implemented Interfaces:

Type

Direct Known Subclasses:

AbstractFixedWidthType, AbstractVariableWidthType

public abstract class AbstractType
extends Object
implements Type

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractType(TypeSignature signature, Class<?> javaType)

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition) Compare the values in the specified block at the specified positions equal.
boolean	equals(Object o)
boolean	equalTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition) Are the values in the specified blocks at the specified positions equal?
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.
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.
int	hash(Block block, int position) Calculates the hash code of the value at the specified position in the specified block.
int	hashCode()
boolean	isComparable() True if the type supports equalTo and hash.
boolean	isOrderable() True if the type supports compareTo.
String	toString()
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	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, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.facebook.presto.spi.type.Type

appendTo, createBlockBuilder, getObjectValue

Constructor Detail

AbstractType

protected AbstractType(TypeSignature signature,
            Class<?> javaType)

Method Detail

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. This value is used to determine which method should be called on Cursor, RecordSet or RandomAccessBlock to fetch a value of this type. Currently, this must be boolean, long, double, or Slice.

Specified by:

getJavaType in interface Type

getTypeParameters

public List<Type> getTypeParameters()

Description copied from interface: Type

For parameterized types returns the list of parameters.

Specified by:

getTypeParameters 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 int 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?

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

toString

public final String toString()

Overrides:

toString in class Object

equals

public final boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public final int hashCode()

Overrides:

hashCode in class Object