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Java Source Code / Java Documentation » Net » lucene connector » org.apache.lucene.search 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.lucene.search.Filter
      org.apache.lucene.search.DuplicateFilter

DuplicateFilter
public class DuplicateFilter extends Filter (Code)


Field Summary
final public static  intKM_USE_FIRST_OCCURRENCE
    
final public static  intKM_USE_LAST_OCCURRENCE
    
final public static  intPM_FAST_INVALIDATION
    
final public static  intPM_FULL_VALIDATION
    
 StringfieldName
    
 intkeepMode
     KeepMode determines which document id to consider as the master, all others being identified as duplicates.
 intprocessingMode
     "Full" processing mode starts by setting all bits to false and only setting bits for documents that contain the given field and are identified as none-duplicates.

Constructor Summary
public  DuplicateFilter(String fieldName)
    
public  DuplicateFilter(String fieldName, int keepMode, int processingMode)
    

Method Summary
public  BitSetbits(IndexReader reader)
    
public  booleanequals(Object obj)
    
public  StringgetFieldName()
    
public  intgetKeepMode()
    
public  intgetProcessingMode()
    
public  inthashCode()
    
public static  voidmain(String[] args)
    
public  voidsetFieldName(String fieldName)
    
public  voidsetKeepMode(int keepMode)
    
public  voidsetProcessingMode(int processingMode)
    

Field Detail
KM_USE_FIRST_OCCURRENCE
final public static int KM_USE_FIRST_OCCURRENCE(Code)



KM_USE_LAST_OCCURRENCE
final public static int KM_USE_LAST_OCCURRENCE(Code)



PM_FAST_INVALIDATION
final public static int PM_FAST_INVALIDATION(Code)



PM_FULL_VALIDATION
final public static int PM_FULL_VALIDATION(Code)



fieldName
String fieldName(Code)



keepMode
int keepMode(Code)
KeepMode determines which document id to consider as the master, all others being identified as duplicates. Selecting the "first occurrence" can potentially save on IO.



processingMode
int processingMode(Code)
"Full" processing mode starts by setting all bits to false and only setting bits for documents that contain the given field and are identified as none-duplicates. "Fast" processing sets all bits to true then unsets all duplicate docs found for the given field. This approach avoids the need to read TermDocs for terms that are seen to have a document frequency of exactly "1" (i.e. no duplicates). While a potentially faster approach , the downside is that bitsets produced will include bits set for documents that do not actually contain the field given.




Constructor Detail
DuplicateFilter
public DuplicateFilter(String fieldName)(Code)



DuplicateFilter
public DuplicateFilter(String fieldName, int keepMode, int processingMode)(Code)




Method Detail
bits
public BitSet bits(IndexReader reader) throws IOException(Code)



equals
public boolean equals(Object obj)(Code)



getFieldName
public String getFieldName()(Code)



getKeepMode
public int getKeepMode()(Code)



getProcessingMode
public int getProcessingMode()(Code)



hashCode
public int hashCode()(Code)



main
public static void main(String[] args) throws Exception(Code)

Parameters:
  args -
throws:
  IOException -
throws:
  Exception -



setFieldName
public void setFieldName(String fieldName)(Code)



setKeepMode
public void setKeepMode(int keepMode)(Code)



setProcessingMode
public void setProcessingMode(int processingMode)(Code)



Methods inherited from org.apache.lucene.search.Filter
abstract public BitSet bits(IndexReader reader) throws IOException(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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