MtasSpanIntersectingSpans.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>MtasSpanIntersectingSpans.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</a> > <span class="el_source">MtasSpanIntersectingSpans.java</span></div><h1>MtasSpanIntersectingSpans.java</h1><pre class="source lang-java linenums">package mtas.search.spans;
import java.io.IOException;
import org.apache.lucene.search.spans.SpanCollector;
import org.apache.lucene.search.spans.Spans;
import mtas.search.spans.MtasSpanIntersectingQuery.MtasSpanIntersectingQuerySpans;
import mtas.search.spans.util.MtasSpans;
/**
* The Class MtasSpanIntersectingSpans.
*/
public class MtasSpanIntersectingSpans extends Spans implements MtasSpans {
/** The spans 2. */
private MtasSpanIntersectingQuerySpans spans1, spans2;
/** The no more positions. */
private boolean calledNextStartPosition, noMorePositions;
/** The last spans 2 end position. */
private int lastSpans2StartPosition, lastSpans2EndPosition;
/** The doc id. */
private int docId;
/**
* Instantiates a new mtas span intersecting spans.
*
* @param mtasSpanIntersectingQuery the mtas span intersecting query
* @param spans1 the spans 1
* @param spans2 the spans 2
*/
public MtasSpanIntersectingSpans(
MtasSpanIntersectingQuery mtasSpanIntersectingQuery,
MtasSpanIntersectingQuerySpans spans1,
MtasSpanIntersectingQuerySpans spans2) {
<span class="fc" id="L38"> super();</span>
<span class="fc" id="L39"> docId = -1;</span>
<span class="fc" id="L40"> this.spans1 = spans1;</span>
<span class="fc" id="L41"> this.spans2 = spans2;</span>
<span class="fc" id="L42"> }</span>
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.Spans#nextStartPosition()
*/
@Override
public int nextStartPosition() throws IOException {
// no document
<span class="pc bpc" id="L50" title="2 of 4 branches missed."> if (docId == -1 || docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L51"> throw new IOException("no document");</span>
// finished
<span class="pc bpc" id="L53" title="1 of 2 branches missed."> } else if (noMorePositions) {</span>
<span class="nc" id="L54"> return NO_MORE_POSITIONS;</span>
// littleSpans already at start match, because of check for matching
// document
<span class="fc bfc" id="L57" title="All 2 branches covered."> } else if (!calledNextStartPosition) {</span>
<span class="fc" id="L58"> calledNextStartPosition = true;</span>
<span class="fc" id="L59"> return spans1.spans.startPosition();</span>
// compute next match
} else {
<span class="fc bfc" id="L62" title="All 2 branches covered."> if (goToNextStartPosition()) {</span>
// match found
<span class="fc" id="L64"> return spans1.spans.startPosition();</span>
} else {
// no more matches: document finished
<span class="fc" id="L67"> return NO_MORE_POSITIONS;</span>
}
}
}
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.Spans#startPosition()
*/
@Override
public int startPosition() {
<span class="pc bpc" id="L77" title="1 of 4 branches missed."> return calledNextStartPosition</span>
<span class="fc" id="L78"> ? (noMorePositions ? NO_MORE_POSITIONS : spans1.spans.startPosition())</span>
: -1;
}
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.Spans#endPosition()
*/
@Override
public int endPosition() {
<span class="pc bpc" id="L87" title="2 of 4 branches missed."> return calledNextStartPosition</span>
<span class="pc" id="L88"> ? (noMorePositions ? NO_MORE_POSITIONS : spans1.spans.endPosition())</span>
: -1;
}
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.Spans#width()
*/
@Override
public int width() {
<span class="nc bnc" id="L97" title="All 4 branches missed."> return calledNextStartPosition ? (noMorePositions ? 0</span>
<span class="nc" id="L98"> : spans1.spans.endPosition() - spans1.spans.startPosition()) : 0;</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="L106"> spans1.spans.collect(collector);</span>
<span class="nc" id="L107"> spans2.spans.collect(collector);</span>
<span class="nc" id="L108"> }</span>
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.Spans#positionsCost()
*/
@Override
public float positionsCost() {
<span class="nc" id="L115"> return 0;</span>
}
/* (non-Javadoc)
* @see org.apache.lucene.search.DocIdSetIterator#docID()
*/
@Override
public int docID() {
<span class="fc" id="L123"> return docId;</span>
}
/* (non-Javadoc)
* @see org.apache.lucene.search.DocIdSetIterator#nextDoc()
*/
@Override
public int nextDoc() throws IOException {
<span class="fc" id="L131"> reset();</span>
<span class="pc bpc" id="L132" title="1 of 2 branches missed."> while (!goToNextDoc())</span>
<span class="nc" id="L133"> ;</span>
<span class="fc" id="L134"> return docId;</span>
}
/* (non-Javadoc)
* @see org.apache.lucene.search.DocIdSetIterator#advance(int)
*/
@Override
public int advance(int target) throws IOException {
<span class="fc" id="L142"> reset();</span>
<span class="pc bpc" id="L143" title="1 of 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L144"> return docId;</span>
<span class="pc bpc" id="L145" title="1 of 2 branches missed."> } else if (target < docId) {</span>
// should not happen
<span class="nc" id="L147"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L148"> return docId;</span>
} else {
// advance 1
<span class="fc" id="L151"> int spans1DocId = spans1.spans.docID();</span>
<span class="pc bpc" id="L152" title="1 of 2 branches missed."> if (spans1DocId < target) {</span>
<span class="fc" id="L153"> spans1DocId = spans1.spans.advance(target);</span>
<span class="pc bpc" id="L154" title="1 of 2 branches missed."> if (spans1DocId == NO_MORE_DOCS) {</span>
<span class="nc" id="L155"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L156"> return docId;</span>
}
<span class="fc" id="L158"> target = Math.max(target, spans1DocId);</span>
}
<span class="fc" id="L160"> int spans2DocId = spans2.spans.docID();</span>
// advance 2
<span class="pc bpc" id="L162" title="1 of 2 branches missed."> if (spans2DocId < target) {</span>
<span class="fc" id="L163"> spans2DocId = spans2.spans.advance(target);</span>
<span class="pc bpc" id="L164" title="1 of 2 branches missed."> if (spans2DocId == NO_MORE_DOCS) {</span>
<span class="nc" id="L165"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L166"> return docId;</span>
}
}
// check equal docId, otherwise next
<span class="pc bpc" id="L170" title="1 of 2 branches missed."> if (spans1DocId == spans2DocId) {</span>
<span class="fc" id="L171"> docId = spans1DocId;</span>
// check match
<span class="pc bpc" id="L173" title="1 of 2 branches missed."> if (goToNextStartPosition()) {</span>
<span class="fc" id="L174"> return docId;</span>
} else {
<span class="nc" id="L176"> return nextDoc();</span>
}
} else {
<span class="nc" id="L179"> return nextDoc();</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="pc bpc" id="L191" title="1 of 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L192"> return true;</span>
} else {
<span class="fc" id="L194"> int spans1DocId = spans1.spans.nextDoc();</span>
<span class="fc" id="L195"> int spans2DocId = spans2.spans.docID();</span>
<span class="fc" id="L196"> docId = Math.max(spans1DocId, spans2DocId);</span>
<span class="fc bfc" id="L197" title="All 4 branches covered."> while (spans1DocId != spans2DocId && docId != NO_MORE_DOCS) {</span>
<span class="pc bpc" id="L198" title="1 of 2 branches missed."> if (spans1DocId < spans2DocId) {</span>
<span class="nc" id="L199"> spans1DocId = spans1.spans.advance(spans2DocId);</span>
<span class="nc" id="L200"> docId = spans1DocId;</span>
} else {
<span class="fc" id="L202"> spans2DocId = spans2.spans.advance(spans1DocId);</span>
<span class="fc" id="L203"> docId = spans2DocId;</span>
}
}
<span class="fc bfc" id="L206" title="All 2 branches covered."> if (docId != NO_MORE_DOCS) {</span>
<span class="pc bpc" id="L207" title="1 of 2 branches missed."> if (!goToNextStartPosition()) {</span>
<span class="nc" id="L208"> reset();</span>
<span class="nc" id="L209"> return false;</span>
}
}
<span class="fc" id="L212"> return true;</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 nextSpans1StartPosition, nextSpans1EndPosition;
int nextSpans2StartPosition, nextSpans2EndPosition;
<span class="fc" id="L225"> while ((nextSpans1StartPosition = spans1.spans</span>
<span class="fc bfc" id="L226" title="All 2 branches covered."> .nextStartPosition()) != NO_MORE_POSITIONS) {</span>
<span class="fc" id="L227"> nextSpans1EndPosition = spans1.spans.endPosition();</span>
<span class="fc bfc" id="L228" title="All 4 branches covered."> if (nextSpans1StartPosition <= lastSpans2EndPosition</span>
&& nextSpans1EndPosition >= lastSpans2StartPosition) {
<span class="fc" id="L230"> return true;</span>
} else {
<span class="fc bfc" id="L232" title="All 2 branches covered."> while (lastSpans2StartPosition <= nextSpans1EndPosition) {</span>
<span class="fc" id="L233"> nextSpans2StartPosition = spans2.spans.nextStartPosition();</span>
<span class="fc bfc" id="L234" title="All 2 branches covered."> if (nextSpans2StartPosition == NO_MORE_POSITIONS) {</span>
<span class="fc" id="L235"> noMorePositions = true;</span>
<span class="fc" id="L236"> return false;</span>
} else {
<span class="fc" id="L238"> nextSpans2EndPosition = spans2.spans.endPosition();</span>
<span class="pc bpc" id="L239" title="3 of 4 branches missed."> if (nextSpans2StartPosition > lastSpans2StartPosition</span>
|| nextSpans2EndPosition > lastSpans2EndPosition) {
<span class="pc bpc" id="L241" title="1 of 2 branches missed."> if (nextSpans2EndPosition > lastSpans2EndPosition) {</span>
<span class="fc" id="L242"> lastSpans2StartPosition = nextSpans2StartPosition;</span>
<span class="fc" id="L243"> lastSpans2EndPosition = nextSpans2EndPosition;</span>
<span class="fc bfc" id="L244" title="All 4 branches covered."> if (nextSpans1StartPosition <= lastSpans2EndPosition</span>
&& nextSpans1EndPosition >= lastSpans2StartPosition) {
<span class="fc" id="L246"> return true;</span>
}
}
}
}
}
}
}
<span class="fc" id="L254"> noMorePositions = true;</span>
<span class="fc" id="L255"> return false;</span>
}
/**
* Reset.
*/
private void reset() {
<span class="fc" id="L262"> calledNextStartPosition = false;</span>
<span class="fc" id="L263"> noMorePositions = false;</span>
<span class="fc" id="L264"> lastSpans2StartPosition = -1;</span>
<span class="fc" id="L265"> lastSpans2EndPosition = -1;</span>
<span class="fc" id="L266"> }</span>
/* (non-Javadoc)
* @see org.apache.lucene.search.DocIdSetIterator#cost()
*/
@Override
public long cost() {
<span class="nc" id="L273"> return 0;</span>
}
}
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