Java Doc for ScorerDocQueue.java in  » Net » lucene-connector » org » apache » lucene » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » lucene connector » org.apache.lucene.util   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.lucene.util.ScorerDocQueue ScorerDocQueue public class ScorerDocQueue (Code) A ScorerDocQueue maintains a partial ordering of its Scorers such that the least Scorer can always be found in constant time. Put()'s and pop()'s require log(size) time. The ordering is by Scorer.doc(). Constructor Summary public   ScorerDocQueue(int maxSize)      Create a ScorerDocQueue with a maximum size. Method Summary final public  void adjustTop()      Should be called when the scorer at top changes doc() value. final public  void clear()      Removes all entries from the ScorerDocQueue. public  boolean insert(Scorer scorer)      Adds a Scorer to the ScorerDocQueue in log(size) time if either the ScorerDocQueue is not full, or not lessThan(scorer, top()). final public  Scorer pop()      Removes and returns the least scorer of the ScorerDocQueue in log(size) time. final public  void put(Scorer scorer)      Adds a Scorer to a ScorerDocQueue in log(size) time. final public  int size()      Returns the number of scorers currently stored in the ScorerDocQueue. final public  Scorer top()      Returns the least Scorer of the ScorerDocQueue in constant time. final public  int topDoc()      Returns document number of the least Scorer of the ScorerDocQueue in constant time. final public  boolean topNextAndAdjustElsePop()      final public  float topScore()      final public  boolean topSkipToAndAdjustElsePop(int target)      Constructor Detail ScorerDocQueue public ScorerDocQueue(int maxSize)(Code) Create a ScorerDocQueue with a maximum size. Method Detail adjustTop final public void adjustTop()(Code) Should be called when the scorer at top changes doc() value. Still log(n) worst case, but it's at least twice as fast to { pq.top().change(); pq.adjustTop(); } instead of { o = pq.pop(); o.change(); pq.push(o); } clear final public void clear()(Code) Removes all entries from the ScorerDocQueue. insert public boolean insert(Scorer scorer)(Code) Adds a Scorer to the ScorerDocQueue in log(size) time if either the ScorerDocQueue is not full, or not lessThan(scorer, top()). Parameters:   scorer - true if scorer is added, false otherwise. pop final public Scorer pop()(Code) Removes and returns the least scorer of the ScorerDocQueue in log(size) time. Should not be used when the queue is empty. put final public void put(Scorer scorer)(Code) Adds a Scorer to a ScorerDocQueue in log(size) time. If one tries to add more Scorers than maxSize a RuntimeException (ArrayIndexOutOfBound) is thrown. size final public int size()(Code) Returns the number of scorers currently stored in the ScorerDocQueue. top final public Scorer top()(Code) Returns the least Scorer of the ScorerDocQueue in constant time. Should not be used when the queue is empty. topDoc final public int topDoc()(Code) Returns document number of the least Scorer of the ScorerDocQueue in constant time. Should not be used when the queue is empty. topNextAndAdjustElsePop final public boolean topNextAndAdjustElsePop() throws IOException(Code) topScore final public float topScore() throws IOException(Code) topSkipToAndAdjustElsePop final public boolean topSkipToAndAdjustElsePop(int target) throws IOException(Code) 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)