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java.lang.Object org.terrier.structures.postings.BasicPostingImpl org.terrier.structures.postings.BasicIterablePosting org.terrier.structures.postings.BlockFieldIterablePosting
public class BlockFieldIterablePosting
class BlockFieldIterablePosting
Field Summary |
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Fields inherited from class org.terrier.structures.postings.BasicIterablePosting |
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bitFileReader, doi, numEntries |
Fields inherited from class org.terrier.structures.postings.BasicPostingImpl |
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id, tf |
Fields inherited from interface org.terrier.structures.postings.IterablePosting |
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EOL |
Constructor Summary | |
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BlockFieldIterablePosting(BitIn _bitFileReader,
int _numEntries,
DocumentIndex doi,
int _fieldCount)
Make a new posting iterator that is read from a BitIn stream. |
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BlockFieldIterablePosting(int _fieldCount)
Make a new posting that can be loaded using Writable methods |
Method Summary | |
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WritablePosting |
asWritablePosting()
Copies this posting to one free of an iterator. |
int[] |
getFieldFrequencies()
Returns the frequencies of the term in each field of the document |
int[] |
getFieldLengths()
Returns the lengths of the each fields in the current document |
int[] |
getPositions()
Return positions of occurrences |
int |
next()
Move this iterator to the next posting. |
void |
readFields(java.io.DataInput in)
Reads the a single posting (not an iterable posting - use BitPostingIndex for that) |
java.lang.String |
toString()
Makes a human readable form of this posting |
void |
write(java.io.DataOutput out)
Writes the current posting (not an iterable posting - use DirectInvertedOutputStream for that). |
Methods inherited from class org.terrier.structures.postings.BasicIterablePosting |
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close, endOfPostings, getDocumentLength, next |
Methods inherited from class org.terrier.structures.postings.BasicPostingImpl |
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getFrequency, getId, setId |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface org.terrier.structures.postings.Posting |
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getDocumentLength, getFrequency, getId, setId |
Constructor Detail |
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public BlockFieldIterablePosting(int _fieldCount)
_fieldCount
- number of fields to expectpublic BlockFieldIterablePosting(BitIn _bitFileReader, int _numEntries, DocumentIndex doi, int _fieldCount) throws java.io.IOException
_bitFileReader
- BitIn stream containing postings_numEntries
- number of postings to read from streamdoi
- DocumentIndex to read document and field lengths from_fieldCount
- number of fields to expect
java.io.IOException
Method Detail |
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public int next() throws java.io.IOException
next
in interface IterablePosting
next
in class BasicIterablePosting
java.io.IOException
public int[] getPositions()
getPositions
in interface BlockPosting
public int[] getFieldFrequencies()
getFieldFrequencies
in interface FieldPosting
public int[] getFieldLengths()
getFieldLengths
in interface FieldPosting
public void readFields(java.io.DataInput in) throws java.io.IOException
readFields
in interface org.apache.hadoop.io.Writable
readFields
in class BasicPostingImpl
java.io.IOException
public void write(java.io.DataOutput out) throws java.io.IOException
write
in interface org.apache.hadoop.io.Writable
write
in class BasicPostingImpl
java.io.IOException
public WritablePosting asWritablePosting()
asWritablePosting
in interface Posting
asWritablePosting
in class BasicIterablePosting
public java.lang.String toString()
toString
in class BasicPostingImpl
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