java.lang.Object
- org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable<I,V,E>
- - org.apache.giraph.worker.WorkerAggregatorDelegator<I,V,E>
  - - org.apache.giraph.io.VertexReader<I,V,E>
    - - org.apache.giraph.io.formats.TextVertexInputFormat.TextVertexReader
      - org.apache.giraph.io.formats.TextVertexInputFormat.TextVertexReaderFromEachLineProcessed<String[]>
        
        com.alibaba.graphscope.example.giraph.format.DatagenVertexInputFormat.P2PVertexReader

All Implemented Interfaces:

org.apache.giraph.aggregators.AggregatorUsage, org.apache.giraph.conf.GiraphConfigurationSettable<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.DoubleWritable>, org.apache.giraph.conf.ImmutableClassesGiraphConfigurable<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.DoubleWritable>, org.apache.giraph.worker.WorkerAggregatorUsage, org.apache.giraph.worker.WorkerBroadcastUsage, org.apache.giraph.worker.WorkerGlobalCommUsage, org.apache.giraph.worker.WorkerReduceUsage

Enclosing class:

DatagenVertexInputFormat
```
public class DatagenVertexInputFormat.P2PVertexReader
extends TextVertexInputFormat.TextVertexReaderFromEachLineProcessed<String[]>
```

Constructor Summary

Constructors
Constructor Description

P2PVertexReader()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected Iterable<org.apache.giraph.edge.Edge<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable>>`	`getEdges(String[] tokens)`	Reads edges from the preprocessed line.
`protected org.apache.hadoop.io.LongWritable`	`getId(String[] tokens)`	Reads vertex id from the preprocessed line.
`protected org.apache.hadoop.io.DoubleWritable`	`getValue(String[] tokens)`	Reads vertex value from the preprocessed line.
`protected String[]`	`preprocessLine(org.apache.hadoop.io.Text line)`	Preprocess the line so other methods can easily read necessary information for creating vertex.

Methods inherited from class org.apache.giraph.io.formats.TextVertexInputFormat.TextVertexReaderFromEachLineProcessed
getCurrentVertex, nextVertex

Methods inherited from class org.apache.giraph.io.formats.TextVertexInputFormat.TextVertexReader
close, createLineRecordReader, getContext, getProgress, getRecordReader, initialize

Methods inherited from class org.apache.giraph.worker.WorkerAggregatorDelegator
aggregate, getAggregatedValue, getBroadcast, reduce, reduceMerge, setAggregatorManager

Methods inherited from class org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable
getConf, setConf

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - P2PVertexReader
```
public P2PVertexReader()
```
- Method Detail
  - preprocessLine
```
protected String[] preprocessLine(org.apache.hadoop.io.Text line)
                           throws IOException
```
    Description copied from class: TextVertexInputFormat.TextVertexReaderFromEachLineProcessed
    
    Preprocess the line so other methods can easily read necessary information for creating vertex.
    
    Specified by:
    
    preprocessLine in class TextVertexInputFormat.TextVertexReaderFromEachLineProcessed<String[]>
    
    Parameters:
    
    line - the current line to be read
    
    Returns:
    
    the preprocessed object
    
    Throws:
    
    IOException - exception that can be thrown while reading
  - getId
```
protected org.apache.hadoop.io.LongWritable getId(String[] tokens)
                                           throws IOException
```
    Description copied from class: TextVertexInputFormat.TextVertexReaderFromEachLineProcessed
    
    Reads vertex id from the preprocessed line.
    
    Specified by:
    
    getId in class TextVertexInputFormat.TextVertexReaderFromEachLineProcessed<String[]>
    
    Parameters:
    
    tokens - the object obtained by preprocessing the line
    
    Returns:
    
    the vertex id
    
    Throws:
    
    IOException - exception that can be thrown while reading
  - getValue
```
protected org.apache.hadoop.io.DoubleWritable getValue(String[] tokens)
                                                throws IOException
```
    Description copied from class: TextVertexInputFormat.TextVertexReaderFromEachLineProcessed
    
    Reads vertex value from the preprocessed line.
    
    Specified by:
    
    getValue in class TextVertexInputFormat.TextVertexReaderFromEachLineProcessed<String[]>
    
    Parameters:
    
    tokens - the object obtained by preprocessing the line
    
    Returns:
    
    the vertex value
    
    Throws:
    
    IOException - exception that can be thrown while reading
  - getEdges
```
protected Iterable<org.apache.giraph.edge.Edge<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable>> getEdges(String[] tokens)
                                                                                                                               throws IOException
```
    Description copied from class: TextVertexInputFormat.TextVertexReaderFromEachLineProcessed
    
    Reads edges from the preprocessed line.
    
    Specified by:
    
    getEdges in class TextVertexInputFormat.TextVertexReaderFromEachLineProcessed<String[]>
    
    Parameters:
    
    tokens - the object obtained by preprocessing the line
    
    Returns:
    
    the edges
    
    Throws:
    
    IOException - exception that can be thrown while reading

Class DatagenVertexInputFormat.P2PVertexReader

Constructor Summary

Method Summary

Methods inherited from class org.apache.giraph.io.formats.TextVertexInputFormat.TextVertexReaderFromEachLineProcessed

Methods inherited from class org.apache.giraph.io.formats.TextVertexInputFormat.TextVertexReader

Methods inherited from class org.apache.giraph.worker.WorkerAggregatorDelegator

Methods inherited from class org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable

Methods inherited from class java.lang.Object

Constructor Detail

P2PVertexReader

Method Detail

preprocessLine

getId

getValue

getEdges