oracle.spatial.hadoop.vector.cluster.kmeans.mapreduce

Class PointKeyInputFormat<K,V>

java.lang.Object

org.apache.hadoop.mapreduce.InputFormat<K,V>

org.apache.hadoop.mapreduce.lib.input.FileInputFormat<I,J>

oracle.spatial.hadoop.vector.mapreduce.input.WrapperInputFormat<PointWritable,org.apache.hadoop.io.NullWritable,K,V>

oracle.spatial.hadoop.vector.cluster.kmeans.mapreduce.PointKeyInputFormat<K,V>

Type Parameters:

K -

V -

public class PointKeyInputFormat<K,V>
extends WrapperInputFormat<PointWritable,org.apache.hadoop.io.NullWritable,K,V>

InputFormat implementation that returns each input record with spatial information as single point. If the record's geometry is different than point, a centroid is calculated. This class is used along with KMeansSampler.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.lib.input.FileInputFormat

org.apache.hadoop.mapreduce.lib.input.FileInputFormat.Counter

Field Summary

Fields inherited from class oracle.spatial.hadoop.vector.mapreduce.input.WrapperInputFormat

iInputFormat

Fields inherited from class org.apache.hadoop.mapreduce.lib.input.FileInputFormat

DEFAULT_LIST_STATUS_NUM_THREADS, INPUT_DIR, INPUT_DIR_RECURSIVE, LIST_STATUS_NUM_THREADS, NUM_INPUT_FILES, PATHFILTER_CLASS, SPLIT_MAXSIZE, SPLIT_MINSIZE

Constructor Summary

Constructors

Constructor and Description
PointKeyInputFormat()

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.mapreduce.RecordReader<PointWritable,org.apache.hadoop.io.NullWritable>	createRecordReader(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context)

Methods inherited from class oracle.spatial.hadoop.vector.mapreduce.input.WrapperInputFormat

createInternalInputFormat, getFittingInputSplit, getInternalInputFormat, getInternalInputFormatClass, getRecordInfoProvider, getRecordInfoProviderClass, getSplits, setInternalInputFormatClass, setRecordInfoProviderClass

Methods inherited from class org.apache.hadoop.mapreduce.lib.input.FileInputFormat

addInputPath, addInputPathRecursively, addInputPaths, computeSplitSize, getBlockIndex, getFormatMinSplitSize, getInputDirRecursive, getInputPathFilter, getInputPaths, getMaxSplitSize, getMinSplitSize, isSplitable, listStatus, makeSplit, makeSplit, setInputDirRecursive, setInputPathFilter, setInputPaths, setInputPaths, setMaxInputSplitSize, setMinInputSplitSize

Methods inherited from class java.lang.Object

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

Constructor Detail

PointKeyInputFormat

public PointKeyInputFormat()

Method Detail

createRecordReader

public org.apache.hadoop.mapreduce.RecordReader<PointWritable,org.apache.hadoop.io.NullWritable> createRecordReader(org.apache.hadoop.mapreduce.InputSplit split,
                                                                                                                    org.apache.hadoop.mapreduce.TaskAttemptContext context)
                                                                                                             throws java.io.IOException,
                                                                                                                    java.lang.InterruptedException

Specified by:

createRecordReader in class org.apache.hadoop.mapreduce.InputFormat<PointWritable,org.apache.hadoop.io.NullWritable>

Throws:

java.io.IOException

java.lang.InterruptedException