com.facebook.presto.common.type

Class AbstractVarcharType

java.lang.Object

com.facebook.presto.common.type.AbstractType

com.facebook.presto.common.type.AbstractPrimitiveType

com.facebook.presto.common.type.AbstractVariableWidthType

com.facebook.presto.common.type.AbstractVarcharType

All Implemented Interfaces:

Type, VariableWidthType

Direct Known Subclasses:

VarcharEnumType, VarcharType

public class AbstractVarcharType
extends AbstractVariableWidthType

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_LENGTH
static int	UNBOUNDED_LENGTH

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.
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?
String	getDisplayName() Returns the name of this type that should be displayed to end-users.
int	getLength() Deprecated.
int	getLengthSafe()
Object	getObjectValue(SqlFunctionProperties properties, Block block, int position) Gets an object representation of the type value in the block position.
io.airlift.slice.Slice	getSlice(Block block, int position) Gets the value at the block position as a Slice.
io.airlift.slice.Slice	getSliceUnchecked(Block block, int internalPosition) Gets the value at the block position as a Slice without boundary checks
long	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.
boolean	isUnbounded()
String	toString()
void	writeBytes(AbstractVariableWidthBlockBuilder blockBuilder, byte[] bytes, int offset, int length) writeBytes directly to blockBuilder, without creating a short-lived Slice wrapper.
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.
void	writeString(BlockBuilder blockBuilder, String value)

Methods inherited from class com.facebook.presto.common.type.AbstractVariableWidthType

createBlockBuilder, createBlockBuilder

Methods inherited from class com.facebook.presto.common.type.AbstractPrimitiveType

getTypeSignature

Methods inherited from class com.facebook.presto.common.type.AbstractType

getBlockUnchecked, getBoolean, getBooleanUnchecked, getDouble, getDoubleUnchecked, getJavaType, getLong, getLongUnchecked, getObject, getTypeParameters, writeBoolean, writeDouble, writeLong, writeObject

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

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

getBlockUnchecked, getBoolean, getBooleanUnchecked, getDouble, getDoubleUnchecked, getJavaType, getLong, getLongUnchecked, getObject, getTypeParameters, getTypeSignature, writeBoolean, writeDouble, writeLong, writeObject

Field Detail

UNBOUNDED_LENGTH

public static final int UNBOUNDED_LENGTH

See Also:

Constant Field Values

MAX_LENGTH

public static final int MAX_LENGTH

See Also:

Constant Field Values

Method Detail

getLength

@Deprecated
public int getLength()

Deprecated.

getLengthSafe

public int getLengthSafe()

isUnbounded

public boolean isUnbounded()

isComparable

public boolean isComparable()

Description copied from interface: Type

True if the type supports equalTo and hash.

Specified by:

isComparable in interface Type

Overrides:

isComparable in class AbstractType

isOrderable

public boolean isOrderable()

Description copied from interface: Type

True if the type supports compareTo.

Specified by:

isOrderable in interface Type

Overrides:

isOrderable in class AbstractType

getObjectValue

public Object getObjectValue(SqlFunctionProperties properties,
                             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.

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

Overrides:

equalTo in class AbstractType

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

Overrides:

hash in class AbstractType

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

Overrides:

compareTo in class AbstractType

appendTo

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

Description copied from interface: Type

Append the value at position in block to blockBuilder.

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

Overrides:

getSlice in class AbstractType

getSliceUnchecked

public io.airlift.slice.Slice getSliceUnchecked(Block block,
                                                int internalPosition)

Description copied from interface: Type

Gets the value at the block position as a Slice without boundary checks

Specified by:

getSliceUnchecked in interface Type

Overrides:

getSliceUnchecked in class AbstractType

writeString

public void writeString(BlockBuilder blockBuilder,
                        String value)

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

Overrides:

writeSlice in class AbstractType

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

Overrides:

writeSlice in class AbstractType

writeBytes

public void writeBytes(AbstractVariableWidthBlockBuilder blockBuilder,
                       byte[] bytes,
                       int offset,
                       int length)

writeBytes directly to blockBuilder, without creating a short-lived Slice wrapper. This is used by external systems to interface with Presto. It is currently used by DWRF file writer, from converting row representation to columnar String representation.

equals

public boolean equals(Object o)

Overrides:

equals in class AbstractType

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractType

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

Overrides:

getDisplayName in class AbstractType

toString

public String toString()

Overrides:

toString in class AbstractType