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java.lang.Object org.terrier.structures.indexing.singlepass.RunIterator org.terrier.structures.indexing.singlepass.hadoop.HadoopRunPostingIterator
public class HadoopRunPostingIterator
This class allows the iteration of over a postings within a run within the Hadoop framwork.
Field Summary | |
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protected java.lang.String |
mapNo
Map number |
protected java.util.Iterator<MapEmittedPostingList> |
postingIterator
Runs To Be Merged |
protected int |
splitNo
The Split that the current posting comes from |
protected java.lang.String |
term
Term that we're processing |
Fields inherited from class org.terrier.structures.indexing.singlepass.RunIterator |
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flushNo, numberOfFields, posting, postingClass |
Constructor Summary | |
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HadoopRunPostingIterator(java.lang.Class<? extends PostingInRun> postingClass,
int runNo,
java.util.Iterator<MapEmittedPostingList> _postingiterator,
java.lang.String _term,
int numFields)
Constructs a new RunPostingIterator. |
Method Summary | |
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java.lang.String |
getMapNo()
Returns the map that the current posting came from |
int |
getSplitNo()
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boolean |
hasNext()
Move to the next posting |
PostingInRun |
next()
Return the next PostingInRun |
Methods inherited from class org.terrier.structures.indexing.singlepass.RunIterator |
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close, createPosting, current, getRunNo, remove |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected java.util.Iterator<MapEmittedPostingList> postingIterator
protected java.lang.String mapNo
protected java.lang.String term
protected int splitNo
Constructor Detail |
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public HadoopRunPostingIterator(java.lang.Class<? extends PostingInRun> postingClass, int runNo, java.util.Iterator<MapEmittedPostingList> _postingiterator, java.lang.String _term, int numFields) throws java.lang.Exception
postingClass
- is the name of the class to use to read the postingsrunNo
- is the number of the run_postingiterator
- is the iterator of reduce input data that we are going to loop through_term
- is the term that this iterator is operating on
java.lang.Exception
Method Detail |
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public boolean hasNext()
hasNext
in interface java.util.Iterator<PostingInRun>
hasNext
in class RunIterator
public PostingInRun next()
next
in interface java.util.Iterator<PostingInRun>
next
in class RunIterator
public java.lang.String getMapNo()
public int getSplitNo()
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