java.lang.Object
- org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable<I,V,E>
- - org.apache.giraph.worker.WorkerAggregatorDelegator<I,org.apache.hadoop.io.Writable,E>
  - - org.apache.giraph.io.EdgeReader<I,E>
    - - org.apache.giraph.io.formats.TextEdgeInputFormat.TextEdgeReader
      - org.apache.giraph.io.formats.TextEdgeInputFormat.TextEdgeReaderFromEachLineProcessed<String[]>
        
        com.alibaba.graphscope.example.giraph.format.LiveJournalEdgeInputFormat.LiveJournalEdgeReader

All Implemented Interfaces:

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

Enclosing class:

LiveJournalEdgeInputFormat
```
public class LiveJournalEdgeInputFormat.LiveJournalEdgeReader
extends TextEdgeInputFormat.TextEdgeReaderFromEachLineProcessed<String[]>
```

Constructor Summary

Constructors
Constructor Description

LiveJournalEdgeReader()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected org.apache.hadoop.io.LongWritable`	`getSourceVertexId(String[] line)`	Reads source vertex id from the preprocessed line.
`protected org.apache.hadoop.io.LongWritable`	`getTargetVertexId(String[] line)`	Reads target vertex id from the preprocessed line.
`protected org.apache.hadoop.io.LongWritable`	`getValue(String[] line)`	Reads edge 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 edge

Methods inherited from class org.apache.giraph.io.formats.TextEdgeInputFormat.TextEdgeReaderFromEachLineProcessed
getCurrentEdge, getCurrentSourceId, nextEdge

Methods inherited from class org.apache.giraph.io.formats.TextEdgeInputFormat.TextEdgeReader
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
  - LiveJournalEdgeReader
```
public LiveJournalEdgeReader()
```
- Method Detail
  - preprocessLine
```
protected String[] preprocessLine(org.apache.hadoop.io.Text line)
                           throws IOException
```
    Preprocess the line so other methods can easily read necessary information for creating edge
    
    Specified by:
    
    preprocessLine in class TextEdgeInputFormat.TextEdgeReaderFromEachLineProcessed<String[]>
    
    Parameters:
    
    line - the current line to be read
    
    Returns:
    
    the preprocessed object
    
    Throws:
    
    IOException - exception that can be thrown while reading
  - getTargetVertexId
```
protected org.apache.hadoop.io.LongWritable getTargetVertexId(String[] line)
                                                       throws IOException
```
    Reads target vertex id from the preprocessed line.
    
    Specified by:
    
    getTargetVertexId in class TextEdgeInputFormat.TextEdgeReaderFromEachLineProcessed<String[]>
    
    Parameters:
    
    line - the object obtained by preprocessing the line
    
    Returns:
    
    the target vertex id
    
    Throws:
    
    IOException - exception that can be thrown while reading
  - getSourceVertexId
```
protected org.apache.hadoop.io.LongWritable getSourceVertexId(String[] line)
                                                       throws IOException
```
    Reads source vertex id from the preprocessed line.
    
    Specified by:
    
    getSourceVertexId in class TextEdgeInputFormat.TextEdgeReaderFromEachLineProcessed<String[]>
    
    Parameters:
    
    line - the object obtained by preprocessing the line
    
    Returns:
    
    the source vertex id
    
    Throws:
    
    IOException - exception that can be thrown while reading
  - getValue
```
protected org.apache.hadoop.io.LongWritable getValue(String[] line)
                                              throws IOException
```
    Reads edge value from the preprocessed line.
    
    Specified by:
    
    getValue in class TextEdgeInputFormat.TextEdgeReaderFromEachLineProcessed<String[]>
    
    Parameters:
    
    line - the object obtained by preprocessing the line
    
    Returns:
    
    the edge value
    
    Throws:
    
    IOException - exception that can be thrown while reading

Class LiveJournalEdgeInputFormat.LiveJournalEdgeReader

Constructor Summary

Method Summary

Methods inherited from class org.apache.giraph.io.formats.TextEdgeInputFormat.TextEdgeReaderFromEachLineProcessed

Methods inherited from class org.apache.giraph.io.formats.TextEdgeInputFormat.TextEdgeReader

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

LiveJournalEdgeReader

Method Detail

preprocessLine

getTargetVertexId

getSourceVertexId

getValue