Type (presto-spi 0.94 API)

All Known Subinterfaces:

FixedWidthType, VariableWidthType

All Known Implementing Classes:

AbstractFixedWidthType, AbstractType, AbstractVariableWidthType, BigintType, BooleanType, DateType, DoubleType, HyperLogLogType, IntervalDayTimeType, IntervalYearMonthType, TimestampType, TimestampWithTimeZoneType, TimeType, TimeWithTimeZoneType, VarbinaryType, VarcharType
```
public interface Type
```

Method Summary

All Methods Instance Methods Abstract Methods
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)` Creates a 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?
`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`	`getObjectValue(ConnectorSession session, 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.
`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.
`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`	`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`.

- Method Detail
  - getTypeSignature
```
TypeSignature getTypeSignature()
```
    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.
  - getDisplayName
```
String getDisplayName()
```
    Returns the name of this type that should be displayed to end-users.
  - isComparable
```
boolean isComparable()
```
    True if the type supports equalTo and hash.
  - isOrderable
```
boolean isOrderable()
```
    True if the type supports compareTo.
  - getJavaType
```
Class<?> getJavaType()
```
    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.
  - getTypeParameters
```
List<Type> getTypeParameters()
```
    For parameterized types returns the list of parameters.
  - createBlockBuilder
```
BlockBuilder createBlockBuilder(BlockBuilderStatus blockBuilderStatus)
```
    Creates a block builder for this type. This is the builder used to store values after an expression projection within the query.
  - getObjectValue
```
Object getObjectValue(ConnectorSession session,
                      Block block,
                      int position)
```
    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.
  - getBoolean
```
boolean getBoolean(Block block,
                   int position)
```
    Gets the value at the block position as a boolean.
  - getLong
```
long getLong(Block block,
             int position)
```
    Gets the value at the block position as a long.
  - getDouble
```
double getDouble(Block block,
                 int position)
```
    Gets the value at the block position as a double.
  - getSlice
```
io.airlift.slice.Slice getSlice(Block block,
                                int position)
```
    Gets the value at the block position as a Slice.
  - writeBoolean
```
void writeBoolean(BlockBuilder blockBuilder,
                  boolean value)
```
    Writes the boolean value into the BlockBuilder.
  - writeLong
```
void writeLong(BlockBuilder blockBuilder,
               long value)
```
    Writes the long value into the BlockBuilder.
  - writeDouble
```
void writeDouble(BlockBuilder blockBuilder,
                 double value)
```
    Writes the double value into the BlockBuilder.
  - writeSlice
```
void writeSlice(BlockBuilder blockBuilder,
                io.airlift.slice.Slice value)
```
    Writes the Slice value into the BlockBuilder.
  - writeSlice
```
void writeSlice(BlockBuilder blockBuilder,
                io.airlift.slice.Slice value,
                int offset,
                int length)
```
    Writes the Slice value into the BlockBuilder.
  - appendTo
```
void appendTo(Block block,
              int position,
              BlockBuilder blockBuilder)
```
    Append the value at position in block to blockBuilder.
  - equalTo
```
boolean equalTo(Block leftBlock,
                int leftPosition,
                Block rightBlock,
                int rightPosition)
```
    Are the values in the specified blocks at the specified positions equal?
  - hash
```
int hash(Block block,
         int position)
```
    Calculates the hash code of the value at the specified position in the specified block.
  - compareTo
```
int compareTo(Block leftBlock,
              int leftPosition,
              Block rightBlock,
              int rightPosition)
```
    Compare the values in the specified block at the specified positions equal.

Interface Type

Method Summary

Method Detail

getTypeSignature

getDisplayName

isComparable

isOrderable

getJavaType

getTypeParameters

createBlockBuilder

getObjectValue

getBoolean

getLong

getDouble

getSlice

writeBoolean

writeLong

writeDouble

writeSlice

writeSlice

appendTo

equalTo

hash

compareTo