eu.stratosphere.example.java.record.triangles.io

Class EdgeWithDegreesInputFormat

java.lang.Object

eu.stratosphere.api.common.io.FileInputFormat<OT>

eu.stratosphere.api.common.io.DelimitedInputFormat<Record>

eu.stratosphere.api.java.record.io.DelimitedInputFormat

eu.stratosphere.example.java.record.triangles.io.EdgeWithDegreesInputFormat

All Implemented Interfaces:

InputFormat<Record,FileInputSplit>, Serializable

public final class EdgeWithDegreesInputFormat
extends DelimitedInputFormat

Input format that reads edges augmented with vertex degrees. The data to be read is assumed to be in the format v1,d1|v2,d2\n, where v1 and v2 are the IDs of the first and second vertex, while d1 and d2 are the vertex degrees.

The result record holds the fields in the sequence (v1, v2, d1, d2).

The delimiters are configurable. The default delimiter between vertex ID and vertex degree is the comma (,). The default delimiter between the two vertices is the vertical bar (|).

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class eu.stratosphere.api.common.io.DelimitedInputFormat

DelimitedInputFormat.AbstractConfigBuilder<T>, DelimitedInputFormat.ConfigBuilder

Nested classes/interfaces inherited from class eu.stratosphere.api.common.io.FileInputFormat

FileInputFormat.FileBaseStatistics, FileInputFormat.InputSplitOpenThread

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEGREE_DELIMITER_CHAR
static String	VERTEX_DELIMITER_CHAR

Fields inherited from class eu.stratosphere.api.common.io.DelimitedInputFormat

RECORD_DELIMITER

Fields inherited from class eu.stratosphere.api.common.io.FileInputFormat

filePath, minSplitSize, numSplits, openTimeout, splitLength, splitStart, stream

Constructor Summary

Constructors

Constructor and Description
EdgeWithDegreesInputFormat()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(Configuration parameters)
boolean	readRecord(Record target, byte[] bytes, int offset, int numBytes)

Methods inherited from class eu.stratosphere.api.common.io.DelimitedInputFormat

close, configureDelimitedFormat, getBufferSize, getDelimiter, getLineLengthLimit, getNumLineSamples, getStatistics, loadGloablConfigParams, nextRecord, open, reachedEnd, setBufferSize, setDelimiter, setDelimiter, setDelimiter, setDelimiter, setDelimiter, setLineLengthLimit, setNumLineSamples

Methods inherited from class eu.stratosphere.api.common.io.FileInputFormat

configureFileFormat, createInputSplits, getFilePath, getFileStats, getInputSplitType, getMinSplitSize, getNumSplits, getOpenTimeout, getSplitLength, getSplitStart, setFilePath, setFilePath, setMinSplitSize, setNumSplits, setOpenTimeout, toString

Methods inherited from class java.lang.Object

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

Field Detail

VERTEX_DELIMITER_CHAR

public static final String VERTEX_DELIMITER_CHAR

See Also:

Constant Field Values

DEGREE_DELIMITER_CHAR

public static final String DEGREE_DELIMITER_CHAR

See Also:

Constant Field Values

Constructor Detail

EdgeWithDegreesInputFormat

public EdgeWithDegreesInputFormat()

Method Detail

readRecord

public boolean readRecord(Record target,
                 byte[] bytes,
                 int offset,
                 int numBytes)

Specified by:

readRecord in class DelimitedInputFormat

configure

public void configure(Configuration parameters)

Specified by:

configure in interface InputFormat<Record,FileInputSplit>

Overrides:

configure in class DelimitedInputFormat<Record>