Package io.trino.plugin.accumulo.serializers

Class StringRowSerializer

java.lang.Object

io.trino.plugin.accumulo.serializers.StringRowSerializer

All Implemented Interfaces:

AccumuloRowSerializer

public class StringRowSerializer
extends Object
implements AccumuloRowSerializer

Implementation of StringRowSerializer that encodes and decodes Trino column values as human-readable String objects.

Constructor Summary

Constructors

Constructor	Description
StringRowSerializer()

Method Summary

Modifier and Type	Method	Description
<T> T	decode(Type type, byte[] value)	Generic function to decode the given byte array to a Java object based on the given type.
void	deserialize(Map.Entry<org.apache.accumulo.core.data.Key,org.apache.accumulo.core.data.Value> entry)	Deserialize the given Accumulo entry, retrieving data for the Trino column.
byte[]	encode(Type type, Object value)	Encodes a Trino Java object to a byte array based on the given type.
Block	getArray(String name, Type type)	Gets the array Block of the given Trino column.
boolean	getBoolean(String name)	Gets the Boolean value of the given Trino column.
byte	getByte(String name)	Gets the Byte value of the given Trino column.
Date	getDate(String name)	Gets the Date value of the given Trino column.
double	getDouble(String name)	Gets the Double value of the given Trino column.
float	getFloat(String name)	Gets the Float value of the given Trino column.
int	getInt(String name)	Gets the Integer value of the given Trino column.
long	getLong(String name)	Gets the Long value of the given Trino column.
Block	getMap(String name, Type type)	Gets the Map value of the given Trino column and Map type.
short	getShort(String name)	Gets the Short value of the given Trino column.
Time	getTime(String name)	Gets the Time value of the given Trino column.
Timestamp	getTimestamp(String name)	Gets the Timestamp value of the given Trino column.
byte[]	getVarbinary(String name)	Gets the Varbinary value of the given Trino column.
String	getVarchar(String name)	Gets the String value of the given Trino column.
boolean	isNull(String name)	Gets a Boolean value indicating whether or not the Trino column is a null value.
void	reset()	Reset the state of the serializer to prepare for a new set of entries with the same row ID.
void	setArray(org.apache.hadoop.io.Text text, Type type, Block block)	Encode the given array Block into the given Text object.
void	setBoolean(org.apache.hadoop.io.Text text, Boolean value)	Encode the given Boolean value into the given Text object.
void	setByte(org.apache.hadoop.io.Text text, Byte value)	Encode the given Byte value into the given Text object.
void	setDate(org.apache.hadoop.io.Text text, Date value)	Encode the given Date value into the given Text object.
void	setDouble(org.apache.hadoop.io.Text text, Double value)	Encode the given Double value into the given Text object.
void	setFloat(org.apache.hadoop.io.Text text, Float value)	Encode the given Float value into the given Text object.
void	setInt(org.apache.hadoop.io.Text text, Integer value)	Encode the given Integer value into the given Text object.
void	setLong(org.apache.hadoop.io.Text text, Long value)	Encode the given Long value into the given Text object.
void	setMap(org.apache.hadoop.io.Text text, Type type, Block block)	Encode the given map Block into the given Text object.
void	setMapping(String name, String family, String qualifier)	Sets the mapping for the Trino column name to Accumulo family and qualifier.
void	setRowIdName(String name)	Sets the Trino name which maps to the Accumulo row ID.
void	setRowOnly(boolean rowOnly)	Sets a Boolean value indicating whether or not only the row ID is going to be retrieved from the serializer.
void	setShort(org.apache.hadoop.io.Text text, Short value)	Encode the given Short value into the given Text object.
void	setTime(org.apache.hadoop.io.Text text, Time value)	Encode the given Time value into the given Text object.
void	setTimestamp(org.apache.hadoop.io.Text text, Timestamp value)	Encode the given Timestamp value into the given Text object.
void	setVarbinary(org.apache.hadoop.io.Text text, byte[] value)	Encode the given byte[] value into the given Text object.
void	setVarchar(org.apache.hadoop.io.Text text, String value)	Encode the given String value into the given Text object.

Methods inherited from class java.lang.Object

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

Constructor Detail

StringRowSerializer

public StringRowSerializer()

Method Detail

setRowIdName

public void setRowIdName(String name)

Description copied from interface: AccumuloRowSerializer

Sets the Trino name which maps to the Accumulo row ID.

Specified by:

setRowIdName in interface AccumuloRowSerializer

Parameters:

name - Trino column name

setRowOnly

public void setRowOnly(boolean rowOnly)

Description copied from interface: AccumuloRowSerializer

Sets a Boolean value indicating whether or not only the row ID is going to be retrieved from the serializer.

Specified by:

setRowOnly in interface AccumuloRowSerializer

Parameters:

rowOnly - True if only the row ID is set, false otherwise

setMapping

public void setMapping(String name,
                       String family,
                       String qualifier)

Description copied from interface: AccumuloRowSerializer

Sets the mapping for the Trino column name to Accumulo family and qualifier.

Specified by:

setMapping in interface AccumuloRowSerializer

Parameters:

name - Trino name

family - Accumulo family

qualifier - Accumulo qualifier

reset

public void reset()

Description copied from interface: AccumuloRowSerializer

Reset the state of the serializer to prepare for a new set of entries with the same row ID.

Specified by:

reset in interface AccumuloRowSerializer

deserialize

public void deserialize(Map.Entry<org.apache.accumulo.core.data.Key,org.apache.accumulo.core.data.Value> entry)

Description copied from interface: AccumuloRowSerializer

Deserialize the given Accumulo entry, retrieving data for the Trino column.

Specified by:

deserialize in interface AccumuloRowSerializer

Parameters:

entry - Entry to deserialize

isNull

public boolean isNull(String name)

Description copied from interface: AccumuloRowSerializer

Gets a Boolean value indicating whether or not the Trino column is a null value.

Specified by:

isNull in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

True if null, false otherwise.

getArray

public Block getArray(String name,
                      Type type)

Description copied from interface: AccumuloRowSerializer

Gets the array Block of the given Trino column.

Specified by:

getArray in interface AccumuloRowSerializer

Parameters:

name - Column name

type - Array type

Returns:

True if null, false otherwise.

setArray

public void setArray(org.apache.hadoop.io.Text text,
                     Type type,
                     Block block)

Description copied from interface: AccumuloRowSerializer

Encode the given array Block into the given Text object.

Specified by:

setArray in interface AccumuloRowSerializer

Parameters:

text - Text object to set

type - Array type

block - Array block

getBoolean

public boolean getBoolean(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Boolean value of the given Trino column.

Specified by:

getBoolean in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Boolean value

setBoolean

public void setBoolean(org.apache.hadoop.io.Text text,
                       Boolean value)

Description copied from interface: AccumuloRowSerializer

Encode the given Boolean value into the given Text object.

Specified by:

setBoolean in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getByte

public byte getByte(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Byte value of the given Trino column.

Specified by:

getByte in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Byte value

setByte

public void setByte(org.apache.hadoop.io.Text text,
                    Byte value)

Description copied from interface: AccumuloRowSerializer

Encode the given Byte value into the given Text object.

Specified by:

setByte in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getDate

public Date getDate(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Date value of the given Trino column.

Specified by:

getDate in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Date value

setDate

public void setDate(org.apache.hadoop.io.Text text,
                    Date value)

Description copied from interface: AccumuloRowSerializer

Encode the given Date value into the given Text object.

Specified by:

setDate in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getDouble

public double getDouble(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Double value of the given Trino column.

Specified by:

getDouble in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Double value

setDouble

public void setDouble(org.apache.hadoop.io.Text text,
                      Double value)

Description copied from interface: AccumuloRowSerializer

Encode the given Double value into the given Text object.

Specified by:

setDouble in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getFloat

public float getFloat(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Float value of the given Trino column.

Specified by:

getFloat in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Float value

setFloat

public void setFloat(org.apache.hadoop.io.Text text,
                     Float value)

Description copied from interface: AccumuloRowSerializer

Encode the given Float value into the given Text object.

Specified by:

setFloat in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getInt

public int getInt(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Integer value of the given Trino column.

Specified by:

getInt in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Integer value

setInt

public void setInt(org.apache.hadoop.io.Text text,
                   Integer value)

Description copied from interface: AccumuloRowSerializer

Encode the given Integer value into the given Text object.

Specified by:

setInt in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getLong

public long getLong(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Long value of the given Trino column.

Specified by:

getLong in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Long value

setLong

public void setLong(org.apache.hadoop.io.Text text,
                    Long value)

Description copied from interface: AccumuloRowSerializer

Encode the given Long value into the given Text object.

Specified by:

setLong in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getMap

public Block getMap(String name,
                    Type type)

Description copied from interface: AccumuloRowSerializer

Gets the Map value of the given Trino column and Map type.

Specified by:

getMap in interface AccumuloRowSerializer

Parameters:

name - Column name

type - Map type

Returns:

Map value

setMap

public void setMap(org.apache.hadoop.io.Text text,
                   Type type,
                   Block block)

Description copied from interface: AccumuloRowSerializer

Encode the given map Block into the given Text object.

Specified by:

setMap in interface AccumuloRowSerializer

Parameters:

text - Text object to set

type - Map type

block - Map block

getShort

public short getShort(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Short value of the given Trino column.

Specified by:

getShort in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Short value

setShort

public void setShort(org.apache.hadoop.io.Text text,
                     Short value)

Description copied from interface: AccumuloRowSerializer

Encode the given Short value into the given Text object.

Specified by:

setShort in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getTime

public Time getTime(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Time value of the given Trino column.

Specified by:

getTime in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Time value

setTime

public void setTime(org.apache.hadoop.io.Text text,
                    Time value)

Description copied from interface: AccumuloRowSerializer

Encode the given Time value into the given Text object.

Specified by:

setTime in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getTimestamp

public Timestamp getTimestamp(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Timestamp value of the given Trino column.

Specified by:

getTimestamp in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Timestamp value

setTimestamp

public void setTimestamp(org.apache.hadoop.io.Text text,
                         Timestamp value)

Description copied from interface: AccumuloRowSerializer

Encode the given Timestamp value into the given Text object.

Specified by:

setTimestamp in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getVarbinary

public byte[] getVarbinary(String name)

Description copied from interface: AccumuloRowSerializer

Gets the Varbinary value of the given Trino column.

Specified by:

getVarbinary in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

Varbinary value

setVarbinary

public void setVarbinary(org.apache.hadoop.io.Text text,
                         byte[] value)

Description copied from interface: AccumuloRowSerializer

Encode the given byte[] value into the given Text object.

Specified by:

setVarbinary in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

getVarchar

public String getVarchar(String name)

Description copied from interface: AccumuloRowSerializer

Gets the String value of the given Trino column.

Specified by:

getVarchar in interface AccumuloRowSerializer

Parameters:

name - Column name

Returns:

String value

setVarchar

public void setVarchar(org.apache.hadoop.io.Text text,
                       String value)

Description copied from interface: AccumuloRowSerializer

Encode the given String value into the given Text object.

Specified by:

setVarchar in interface AccumuloRowSerializer

Parameters:

text - Text object to set

value - Value to encode

encode

public byte[] encode(Type type,
                     Object value)

Description copied from interface: AccumuloRowSerializer

Encodes a Trino Java object to a byte array based on the given type.

Java Lists and Maps can be converted to Blocks using AccumuloRowSerializer.getBlockFromArray(Type, java.util.List) and AccumuloRowSerializer.getBlockFromMap(Type, Map)

Type to Encode	Expected Java Object
ARRAY	io.trino.spi.block.Block
BIGINT	Integer or Long
BOOLEAN	Boolean
DATE	java.sql.Date, Long
DOUBLE	Double
INTEGER	Integer
Map	io.trino.spi.block.Block
REAL	Float
SMALLINT	Short
TIME	java.sql.Time, Long
TIMESTAMP	java.sql.Timestamp, Long
TINYINT	Byte
VARBINARY	io.airlift.slice.Slice or byte[]
VARCHAR	io.airlift.slice.Slice or String

Specified by:

encode in interface AccumuloRowSerializer

Parameters:

type - The Trino Type

value - The Java object per the table in the method description

Returns:

Encoded bytes

decode

public <T> T decode(Type type,
                    byte[] value)

Description copied from interface: AccumuloRowSerializer

Generic function to decode the given byte array to a Java object based on the given type.

Blocks from ARRAY and MAP types can be converted to Java Lists and Maps using AccumuloRowSerializer.getArrayFromBlock(Type, Block) and AccumuloRowSerializer.getMapFromBlock(Type, Block)

Encoded Type	Returned Java Object
ARRAY	List<?>
BIGINT	Long
BOOLEAN	Boolean
DATE	Long
DOUBLE	Double
Map	Map<?,?>
REAL	Double
SMALLINT	Long
TIME	Long
TIMESTAMP	Long
TINYINT	Long
VARBINARY	byte[]
VARCHAR	String

Specified by:

decode in interface AccumuloRowSerializer

Type Parameters:

T - The Java type of the object that has been encoded to the given byte array

Parameters:

type - The Trino Type

value - Encoded bytes to decode

Returns:

The Java object per the table in the method description