Package org.apache.flink.types.parser

Class LongParser

java.lang.Object

org.apache.flink.types.parser.FieldParser<Long>

org.apache.flink.types.parser.LongParser

@PublicEvolving
public class LongParser
extends FieldParser<Long>

Parses a decimal text field into a LongValue. Only characters '1' to '0' and '-' are allowed.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.types.parser.FieldParser

FieldParser.ParseErrorState

Constructor Summary

Constructors

Constructor	Description
LongParser()

Method Summary

Modifier and Type	Method	Description
Long	createValue()	Returns an instance of the parsed value type.
Long	getLastResult()	Gets the parsed field.
static long	parseField(byte[] bytes, int startPos, int length)	Static utility to parse a field of type long from a byte sequence that represents text characters (such as when read from a file stream).
int	parseField(byte[] bytes, int startPos, int limit, byte[] delimiter, Long reusable)	Each parser's logic should be implemented inside this method
static long	parseField(byte[] bytes, int startPos, int length, char delimiter)	Static utility to parse a field of type long from a byte sequence that represents text characters (such as when read from a file stream).

Methods inherited from class org.apache.flink.types.parser.FieldParser

delimiterNext, endsWithDelimiter, getCharset, getErrorState, getParserForType, nextStringEndPos, nextStringLength, resetErrorStateAndParse, resetParserState, setCharset, setErrorState

Methods inherited from class java.lang.Object

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

Constructor Detail

LongParser

public LongParser()

Method Detail

parseField

public int parseField(byte[] bytes,
                      int startPos,
                      int limit,
                      byte[] delimiter,
                      Long reusable)

Description copied from class: FieldParser

Each parser's logic should be implemented inside this method

Specified by:

parseField in class FieldParser<Long>

createValue

public Long createValue()

Description copied from class: FieldParser

Returns an instance of the parsed value type.

Specified by:

createValue in class FieldParser<Long>

Returns:

An instance of the parsed value type.

getLastResult

public Long getLastResult()

Description copied from class: FieldParser

Gets the parsed field. This method returns the value parsed by the last successful invocation of FieldParser.parseField(byte[], int, int, byte[], Object). It objects are mutable and reused, it will return the object instance that was passed the parse function.

Specified by:

getLastResult in class FieldParser<Long>

Returns:

The latest parsed field.

parseField

public static final long parseField(byte[] bytes,
                                    int startPos,
                                    int length)

Static utility to parse a field of type long from a byte sequence that represents text characters (such as when read from a file stream).

Parameters:

bytes - The bytes containing the text data that should be parsed.

startPos - The offset to start the parsing.

length - The length of the byte sequence (counting from the offset).

Returns:

The parsed value.

Throws:

NumberFormatException - Thrown when the value cannot be parsed because the text represents not a correct number.

parseField

public static final long parseField(byte[] bytes,
                                    int startPos,
                                    int length,
                                    char delimiter)

Static utility to parse a field of type long from a byte sequence that represents text characters (such as when read from a file stream).

Parameters:

bytes - The bytes containing the text data that should be parsed.

startPos - The offset to start the parsing.

length - The length of the byte sequence (counting from the offset).

delimiter - The delimiter that terminates the field.

Returns:

The parsed value.

Throws:

NumberFormatException - Thrown when the value cannot be parsed because the text represents not a correct number.