MtasMaximumExpandSpans.java.html
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<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en"><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/><link rel="stylesheet" href="../jacoco-resources/report.css" type="text/css"/><link rel="shortcut icon" href="../jacoco-resources/report.gif" type="image/gif"/><title>MtasMaximumExpandSpans.java</title><link rel="stylesheet" href="../jacoco-resources/prettify.css" type="text/css"/><script type="text/javascript" src="../jacoco-resources/prettify.js"></script></head><body onload="window['PR_TAB_WIDTH']=4;prettyPrint()"><div class="breadcrumb" id="breadcrumb"><span class="info"><a href="../jacoco-sessions.html" class="el_session">Sessions</a></span><a href="../index.html" class="el_report">MTAS</a> > <a href="index.source.html" class="el_package">mtas.search.spans.util</a> > <span class="el_source">MtasMaximumExpandSpans.java</span></div><h1>MtasMaximumExpandSpans.java</h1><pre class="source lang-java linenums">package mtas.search.spans.util;
import java.io.IOException;
import org.apache.lucene.search.TwoPhaseIterator;
import org.apache.lucene.search.spans.SpanCollector;
import org.apache.lucene.search.spans.Spans;
import mtas.codec.util.CodecInfo;
import mtas.codec.util.CodecInfo.IndexDoc;
/**
* The Class MtasMaximumExpandSpans.
*/
public class MtasMaximumExpandSpans extends MtasSpans {
/** The sub spans. */
Spans subSpans;
/** The query. */
MtasMaximumExpandSpanQuery query;
/** The min position. */
int minPosition;
/** The max position. */
int maxPosition;
/** The field. */
String field;
/** The mtas codec info. */
CodecInfo mtasCodecInfo;
/** The start position. */
int startPosition;
/** The end position. */
int endPosition;
/** The called next start position. */
private boolean calledNextStartPosition;
/** The doc id. */
int docId;
/**
* Instantiates a new mtas maximum expand spans.
*
* @param query the query
* @param mtasCodecInfo the mtas codec info
* @param field the field
* @param subSpans the sub spans
*/
public MtasMaximumExpandSpans(MtasMaximumExpandSpanQuery query,
CodecInfo mtasCodecInfo, String field, Spans subSpans) {
<span class="fc" id="L57"> super();</span>
<span class="fc" id="L58"> this.subSpans = subSpans;</span>
<span class="fc" id="L59"> this.field = field;</span>
<span class="fc" id="L60"> this.mtasCodecInfo = mtasCodecInfo;</span>
<span class="fc" id="L61"> this.query = query;</span>
<span class="fc" id="L62"> docId = -1;</span>
<span class="fc" id="L63"> reset();</span>
<span class="fc" id="L64"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#nextStartPosition()
*/
@Override
public int nextStartPosition() throws IOException {
<span class="pc bpc" id="L73" title="2 of 4 branches missed."> if (docId == -1 || docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L74"> throw new IOException("no document");</span>
<span class="fc bfc" id="L75" title="All 2 branches covered."> } else if (!calledNextStartPosition) {</span>
<span class="fc" id="L76"> calledNextStartPosition = true;</span>
<span class="fc" id="L77"> return startPosition;</span>
// compute next match
} else {
<span class="fc bfc" id="L80" title="All 2 branches covered."> if (goToNextStartPosition()) {</span>
// match found
<span class="fc" id="L82"> return startPosition;</span>
} else {
// no more matches: document finished
<span class="fc" id="L85"> return NO_MORE_POSITIONS;</span>
}
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#startPosition()
*/
@Override
public int startPosition() {
<span class="fc" id="L97"> return startPosition;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#endPosition()
*/
@Override
public int endPosition() {
<span class="fc" id="L107"> return endPosition;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#width()
*/
@Override
public int width() {
<span class="nc" id="L117"> return endPosition - startPosition;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#collect(org.apache.lucene.search.
* spans.SpanCollector)
*/
@Override
public void collect(SpanCollector collector) throws IOException {
<span class="nc" id="L128"> subSpans.collect(collector);</span>
<span class="nc" id="L129"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#positionsCost()
*/
@Override
public float positionsCost() {
// return subSpans.positionsCost();
<span class="nc" id="L139"> return 0;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#docID()
*/
@Override
public int docID() {
<span class="fc" id="L149"> return docId;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#nextDoc()
*/
@Override
public int nextDoc() throws IOException {
<span class="fc" id="L159"> reset();</span>
<span class="pc bpc" id="L160" title="1 of 2 branches missed."> while (!goToNextDoc())</span>
<span class="nc" id="L161"> ;</span>
<span class="fc" id="L162"> return docId;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#advance(int)
*/
@Override
public int advance(int target) throws IOException {
<span class="nc" id="L172"> reset();</span>
<span class="nc bnc" id="L173" title="All 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L174"> return docId;</span>
<span class="nc bnc" id="L175" title="All 2 branches missed."> } else if (target <= docId) {</span>
// should not happen
<span class="nc" id="L177"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L178"> return docId;</span>
} else {
<span class="nc" id="L180"> docId = subSpans.advance(target);</span>
<span class="nc bnc" id="L181" title="All 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L182"> return docId;</span>
} else {
<span class="nc" id="L184"> IndexDoc doc = mtasCodecInfo.getDoc(field, docId);</span>
<span class="nc bnc" id="L185" title="All 2 branches missed."> if (doc != null) {</span>
<span class="nc" id="L186"> minPosition = doc.minPosition;</span>
<span class="nc" id="L187"> maxPosition = doc.maxPosition;</span>
} else {
<span class="nc" id="L189"> minPosition = NO_MORE_POSITIONS;</span>
<span class="nc" id="L190"> maxPosition = NO_MORE_POSITIONS;</span>
}
<span class="nc bnc" id="L192" title="All 2 branches missed."> if (goToNextStartPosition()) {</span>
<span class="nc" id="L193"> return docId;</span>
} else {
<span class="nc" id="L195"> return nextDoc();</span>
}
}
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#asTwoPhaseIterator()
*/
@Override
public TwoPhaseIterator asTwoPhaseIterator() {
<span class="nc bnc" id="L208" title="All 2 branches missed."> if (!query.twoPhaseIteratorAllowed()) {</span>
<span class="nc" id="L209"> return null;</span>
} else {
<span class="nc" id="L211"> TwoPhaseIterator originalTwoPhaseIterator = subSpans.asTwoPhaseIterator();</span>
<span class="nc bnc" id="L212" title="All 2 branches missed."> if (originalTwoPhaseIterator != null) {</span>
<span class="nc" id="L213"> return new TwoPhaseIterator(originalTwoPhaseIterator.approximation()) {</span>
@Override
public boolean matches() throws IOException {
<span class="nc bnc" id="L216" title="All 2 branches missed."> return originalTwoPhaseIterator.matches()</span>
<span class="nc bnc" id="L217" title="All 2 branches missed."> && twoPhaseCurrentDocMatches();</span>
}
@Override
public float matchCost() {
<span class="nc" id="L222"> return originalTwoPhaseIterator.matchCost();</span>
}
};
} else {
<span class="nc" id="L226"> return new TwoPhaseIterator(subSpans) {</span>
@Override
public boolean matches() throws IOException {
<span class="nc" id="L230"> return twoPhaseCurrentDocMatches();</span>
}
@Override
public float matchCost() {
<span class="nc" id="L235"> return subSpans.positionsCost();</span>
}
};
}
}
}
/**
* Two phase current doc matches.
*
* @return true, if successful
* @throws IOException Signals that an I/O exception has occurred.
*/
private boolean twoPhaseCurrentDocMatches() throws IOException {
<span class="nc bnc" id="L249" title="All 2 branches missed."> if (docId != subSpans.docID()) {</span>
<span class="nc" id="L250"> reset();</span>
<span class="nc" id="L251"> docId = subSpans.docID();</span>
<span class="nc" id="L252"> IndexDoc doc = mtasCodecInfo.getDoc(field, docId);</span>
<span class="nc bnc" id="L253" title="All 2 branches missed."> if (doc != null) {</span>
<span class="nc" id="L254"> minPosition = doc.minPosition;</span>
<span class="nc" id="L255"> maxPosition = doc.maxPosition;</span>
} else {
<span class="nc" id="L257"> minPosition = NO_MORE_POSITIONS;</span>
<span class="nc" id="L258"> maxPosition = NO_MORE_POSITIONS;</span>
}
}
<span class="nc bnc" id="L261" title="All 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L262"> return false;</span>
} else {
<span class="nc" id="L264"> return goToNextStartPosition();</span>
}
}
/**
* Go to next doc.
*
* @return true, if successful
* @throws IOException Signals that an I/O exception has occurred.
*/
private boolean goToNextDoc() throws IOException {
<span class="fc" id="L275"> reset();</span>
<span class="pc bpc" id="L276" title="1 of 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L277"> minPosition = NO_MORE_POSITIONS;</span>
<span class="nc" id="L278"> maxPosition = NO_MORE_POSITIONS;</span>
<span class="nc" id="L279"> return true;</span>
} else {
<span class="fc" id="L281"> docId = subSpans.nextDoc();</span>
<span class="fc bfc" id="L282" title="All 2 branches covered."> if (docId == NO_MORE_DOCS) {</span>
<span class="fc" id="L283"> minPosition = NO_MORE_POSITIONS;</span>
<span class="fc" id="L284"> maxPosition = NO_MORE_POSITIONS;</span>
<span class="fc" id="L285"> return true;</span>
} else {
<span class="fc" id="L287"> IndexDoc doc = mtasCodecInfo.getDoc(field, docId);</span>
<span class="pc bpc" id="L288" title="1 of 2 branches missed."> if (doc != null) {</span>
<span class="fc" id="L289"> minPosition = doc.minPosition;</span>
<span class="fc" id="L290"> maxPosition = doc.maxPosition;</span>
} else {
<span class="nc" id="L292"> minPosition = NO_MORE_POSITIONS;</span>
<span class="nc" id="L293"> maxPosition = NO_MORE_POSITIONS;</span>
}
<span class="pc bpc" id="L295" title="1 of 2 branches missed."> if (goToNextStartPosition()) {</span>
<span class="fc" id="L296"> return true;</span>
} else {
<span class="nc" id="L298"> return false;</span>
}
}
}
}
/**
* Go to next start position.
*
* @return true, if successful
* @throws IOException Signals that an I/O exception has occurred.
*/
private boolean goToNextStartPosition() throws IOException {
int basicStartPosition;
int basicEndPosition;
<span class="pc bpc" id="L313" title="2 of 4 branches missed."> if (docId == -1 || docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L314"> throw new IOException("no document");</span>
} else {
<span class="fc" id="L316"> while ((basicStartPosition = subSpans</span>
<span class="fc bfc" id="L317" title="All 2 branches covered."> .nextStartPosition()) != NO_MORE_POSITIONS) {</span>
<span class="fc" id="L318"> basicEndPosition = subSpans.endPosition();</span>
<span class="fc" id="L319"> startPosition = Math.max(minPosition,</span>
(basicStartPosition - query.maximumLeft));
<span class="fc" id="L321"> endPosition = Math.min(maxPosition + 1,</span>
(basicEndPosition + query.maximumRight));
<span class="pc bpc" id="L323" title="2 of 4 branches missed."> if (startPosition <= (basicStartPosition - query.minimumLeft)</span>
&& endPosition >= (basicEndPosition + query.minimumRight)) {
<span class="fc" id="L325"> return true;</span>
}
}
<span class="fc" id="L328"> return false;</span>
}
}
/**
* Reset.
*/
private void reset() {
<span class="fc" id="L336"> calledNextStartPosition = false;</span>
<span class="fc" id="L337"> minPosition = 0;</span>
<span class="fc" id="L338"> maxPosition = 0;</span>
<span class="fc" id="L339"> startPosition = -1;</span>
<span class="fc" id="L340"> endPosition = -1;</span>
<span class="fc" id="L341"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#cost()
*/
@Override
public long cost() {
<span class="nc bnc" id="L350" title="All 2 branches missed."> return subSpans != null ? subSpans.cost() : 0;</span>
}
}
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