com.facebook.presto.common.type

Class JsonType

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.JsonType

All Implemented Interfaces:

Type, VariableWidthType

public class JsonType
extends AbstractVariableWidthType

The stack representation for JSON objects must have the keys in natural sorted order.

Field Summary

Fields

Modifier and Type	Field and Description
static JsonType	JSON

Constructor Summary

Constructors

Constructor and Description
JsonType()

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.
boolean	equalTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition) Are the values in the specified blocks at the specified positions equal?
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.
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.
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

compareTo, equals, getBlockUnchecked, getBoolean, getBooleanUnchecked, getDisplayName, getDouble, getDoubleUnchecked, getJavaType, getLong, getLongUnchecked, getObject, getSliceUnchecked, getTypeParameters, hashCode, isOrderable, toString, 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

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

Field Detail

JSON

public static final JsonType JSON

Constructor Detail

JsonType

public JsonType()

Method Detail

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

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

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.

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

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