org.spf4j.avro.csv

Class CsvDecoder

java.lang.Object

org.apache.avro.io.Decoder

org.apache.avro.io.ParsingDecoder

org.spf4j.avro.csv.CsvDecoder

All Implemented Interfaces:

org.apache.avro.io.parsing.Parser.ActionHandler, org.apache.avro.io.parsing.SkipParser.SkipHandler

public final class CsvDecoder
extends org.apache.avro.io.ParsingDecoder

A Csv encoder for avro records. there are restrictions on the what schema's are supported.

Author:

Zoltan Farkas

Field Summary

Fields inherited from class org.apache.avro.io.ParsingDecoder

parser

Constructor Summary

Constructors

Constructor and Description
CsvDecoder(CsvReader csvReader, org.apache.avro.Schema readerSchema)

Method Summary

Modifier and Type	Method and Description
long	arrayNext()
org.apache.avro.io.parsing.Symbol	doAction(org.apache.avro.io.parsing.Symbol symbol, org.apache.avro.io.parsing.Symbol symbol1)
long	mapNext()
long	readArrayStart()
boolean	readBoolean()
ByteBuffer	readBytes(ByteBuffer bb)
double	readDouble()
int	readEnum()
void	readFixed(byte[] bytes, int i, int nrBytes)
float	readFloat()
int	readIndex()
int	readInt()
long	readLong()
long	readMapStart()
void	readNull()
String	readString()
org.apache.avro.util.Utf8	readString(org.apache.avro.util.Utf8 utf8)
long	skipArray()
void	skipBytes()
protected void	skipFixed()
void	skipFixed(int i)
void	skipHeader()
long	skipMap()
void	skipString()
String	toString()
static DecodedSchema	tryDecodeSchema(InputStream is, org.apache.avro.Schema readerSchema) Will try to decode the writer schema based on the csv headers, and the reader schema.

Methods inherited from class org.apache.avro.io.ParsingDecoder

skipAction, skipTopSymbol

Methods inherited from class org.apache.avro.io.Decoder

readFixed

Methods inherited from class java.lang.Object

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

Constructor Detail

CsvDecoder

public CsvDecoder(CsvReader csvReader,
                  org.apache.avro.Schema readerSchema)
           throws IOException

Throws:

IOException

Method Detail

skipHeader

public void skipHeader()
                throws IOException,
                       CsvParseException

Throws:

IOException

CsvParseException

readNull

public void readNull()
              throws IOException

Specified by:

readNull in class org.apache.avro.io.Decoder

Throws:

IOException

readBoolean

public boolean readBoolean()
                    throws IOException

Specified by:

readBoolean in class org.apache.avro.io.Decoder

Throws:

IOException

readInt

public int readInt()
            throws IOException

Specified by:

readInt in class org.apache.avro.io.Decoder

Throws:

IOException

readLong

public long readLong()
              throws IOException

Specified by:

readLong in class org.apache.avro.io.Decoder

Throws:

IOException

readFloat

public float readFloat()
                throws IOException

Specified by:

readFloat in class org.apache.avro.io.Decoder

Throws:

IOException

readDouble

public double readDouble()
                  throws IOException

Specified by:

readDouble in class org.apache.avro.io.Decoder

Throws:

IOException

readString

public org.apache.avro.util.Utf8 readString(org.apache.avro.util.Utf8 utf8)
                                     throws IOException

Specified by:

readString in class org.apache.avro.io.Decoder

Throws:

IOException

readString

public String readString()
                  throws IOException

Specified by:

readString in class org.apache.avro.io.Decoder

Throws:

IOException

skipString

public void skipString()
                throws IOException

Specified by:

skipString in class org.apache.avro.io.Decoder

Throws:

IOException

readBytes

public ByteBuffer readBytes(ByteBuffer bb)
                     throws IOException

Specified by:

readBytes in class org.apache.avro.io.Decoder

Throws:

IOException

skipBytes

public void skipBytes()
               throws IOException

Specified by:

skipBytes in class org.apache.avro.io.Decoder

Throws:

IOException

readFixed

public void readFixed(byte[] bytes,
                      int i,
                      int nrBytes)
               throws IOException

Specified by:

readFixed in class org.apache.avro.io.Decoder

Throws:

IOException

skipFixed

public void skipFixed(int i)
               throws IOException

Specified by:

skipFixed in class org.apache.avro.io.Decoder

Throws:

IOException

readEnum

public int readEnum()
             throws IOException

Specified by:

readEnum in class org.apache.avro.io.Decoder

Throws:

IOException

readArrayStart

public long readArrayStart()
                    throws IOException

Specified by:

readArrayStart in class org.apache.avro.io.Decoder

Throws:

IOException

arrayNext

public long arrayNext()
               throws IOException

Specified by:

arrayNext in class org.apache.avro.io.Decoder

Throws:

IOException

skipArray

public long skipArray()
               throws IOException

Specified by:

skipArray in class org.apache.avro.io.Decoder

Throws:

IOException

readMapStart

public long readMapStart()

Specified by:

readMapStart in class org.apache.avro.io.Decoder

mapNext

public long mapNext()

Specified by:

mapNext in class org.apache.avro.io.Decoder

skipMap

public long skipMap()

Specified by:

skipMap in class org.apache.avro.io.Decoder

readIndex

public int readIndex()
              throws IOException

Specified by:

readIndex in class org.apache.avro.io.Decoder

Throws:

IOException

skipFixed

protected void skipFixed()
                  throws IOException

Specified by:

skipFixed in class org.apache.avro.io.ParsingDecoder

Throws:

IOException

doAction

@Nullable
public org.apache.avro.io.parsing.Symbol doAction(org.apache.avro.io.parsing.Symbol symbol,
                                                            org.apache.avro.io.parsing.Symbol symbol1)

toString

public String toString()

Overrides:

toString in class Object

tryDecodeSchema

public static DecodedSchema tryDecodeSchema(InputStream is,
                                            @Nullable
                                            org.apache.avro.Schema readerSchema)
                                     throws IOException

Will try to decode the writer schema based on the csv headers, and the reader schema.

Parameters:

is -

readerSchema -

Returns:

Throws:

IOException