MtasSpanFollowedBySpans.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>MtasSpanFollowedBySpans.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">MtasSpanFollowedBySpans.java</span></div><h1>MtasSpanFollowedBySpans.java</h1><pre class="source lang-java linenums">package mtas.search.spans;
import java.io.IOException;
import java.util.HashSet;
import org.apache.lucene.search.spans.SpanCollector;
import org.apache.lucene.search.spans.Spans;
import mtas.search.spans.MtasSpanFollowedByQuery.MtasSpanFollowedByQuerySpans;
import mtas.search.spans.util.MtasSpans;
/**
* The Class MtasSpanFollowedBySpans.
*/
public class MtasSpanFollowedBySpans extends Spans implements MtasSpans {
/** The spans 1. */
private MtasSpanFollowedByQuerySpans spans1;
/** The spans 2. */
private MtasSpanFollowedByQuerySpans spans2;
/** The last spans 2 start position. */
private int lastSpans2StartPosition;
/** The previous spans 2 start positions. */
private HashSet<Integer> previousSpans2StartPositions;
/** The called next start position. */
private boolean calledNextStartPosition;
/** The no more positions. */
private boolean noMorePositions;
/** The doc id. */
private int docId;
/**
* Instantiates a new mtas span followed by spans.
*
* @param mtasSpanFollowedByQuery the mtas span followed by query
* @param spans1 the spans 1
* @param spans2 the spans 2
*/
public MtasSpanFollowedBySpans(
MtasSpanFollowedByQuery mtasSpanFollowedByQuery,
MtasSpanFollowedByQuerySpans spans1,
MtasSpanFollowedByQuerySpans spans2) {
<span class="fc" id="L50"> super();</span>
<span class="fc" id="L51"> docId = -1;</span>
<span class="fc" id="L52"> this.spans1 = spans1;</span>
<span class="fc" id="L53"> this.spans2 = spans2; </span>
<span class="fc" id="L54"> previousSpans2StartPositions = new HashSet<>();</span>
<span class="fc" id="L55"> }</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="L62"> spans1.spans.collect(collector);</span>
<span class="nc" id="L63"> spans2.spans.collect(collector);</span>
<span class="nc" id="L64"> }</span>
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.Spans#endPosition()
*/
@Override
public int endPosition() {
<span class="pc bpc" id="L71" title="2 of 4 branches missed."> return calledNextStartPosition</span>
<span class="pc" id="L72"> ? (noMorePositions ? NO_MORE_POSITIONS : spans1.spans.endPosition())</span>
: -1;
}
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.Spans#nextStartPosition()
*/
@Override
public int nextStartPosition() throws IOException {
// no document
<span class="pc bpc" id="L82" title="2 of 4 branches missed."> if (docId == -1 || docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L83"> throw new IOException("no document");</span>
// finished
<span class="pc bpc" id="L85" title="1 of 2 branches missed."> } else if (noMorePositions) {</span>
<span class="nc" id="L86"> return NO_MORE_POSITIONS;</span>
// littleSpans already at start match, because of check for matching
// document
<span class="fc bfc" id="L89" title="All 2 branches covered."> } else if (!calledNextStartPosition) {</span>
<span class="fc" id="L90"> calledNextStartPosition = true;</span>
<span class="fc" id="L91"> return spans1.spans.startPosition();</span>
// compute next match
} else {
<span class="fc bfc" id="L94" title="All 2 branches covered."> if (goToNextStartPosition()) {</span>
// match found
<span class="fc" id="L96"> return spans1.spans.startPosition();</span>
} else {
// no more matches: document finished
<span class="fc" id="L99"> return NO_MORE_POSITIONS;</span>
}
}
}
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.Spans#positionsCost()
*/
@Override
public float positionsCost() {
// TODO Auto-generated method stub
<span class="nc" id="L110"> return 0;</span>
}
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.Spans#startPosition()
*/
@Override
public int startPosition() {
<span class="pc bpc" id="L118" title="2 of 4 branches missed."> return calledNextStartPosition</span>
<span class="pc" id="L119"> ? (noMorePositions ? NO_MORE_POSITIONS : spans1.spans.startPosition())</span>
: -1;
}
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.Spans#width()
*/
@Override
public int width() {
<span class="nc bnc" id="L128" title="All 4 branches missed."> return calledNextStartPosition ? (noMorePositions ? 0</span>
<span class="nc" id="L129"> : spans1.spans.endPosition() - spans1.spans.startPosition()) : 0;</span>
}
/* (non-Javadoc)
* @see org.apache.lucene.search.DocIdSetIterator#advance(int)
*/
@Override
public int advance(int target) throws IOException {
<span class="nc" id="L137"> reset();</span>
<span class="nc bnc" id="L138" title="All 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L139"> return docId;</span>
<span class="nc bnc" id="L140" title="All 2 branches missed."> } else if (target < docId) {</span>
// should not happen
<span class="nc" id="L142"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L143"> return docId;</span>
} else {
// advance 1
<span class="nc" id="L146"> int spans1DocId = spans1.spans.docID();</span>
<span class="nc bnc" id="L147" title="All 2 branches missed."> if (spans1DocId < target) {</span>
<span class="nc" id="L148"> spans1DocId = spans1.spans.advance(target);</span>
<span class="nc bnc" id="L149" title="All 2 branches missed."> if (spans1DocId == NO_MORE_DOCS) {</span>
<span class="nc" id="L150"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L151"> return docId;</span>
}
<span class="nc" id="L153"> target = Math.max(target, spans1DocId);</span>
}
<span class="nc" id="L155"> int spans2DocId = spans2.spans.docID();</span>
// advance 2
<span class="nc bnc" id="L157" title="All 2 branches missed."> if (spans2DocId < target) {</span>
<span class="nc" id="L158"> spans2DocId = spans2.spans.advance(target);</span>
<span class="nc bnc" id="L159" title="All 2 branches missed."> if (spans2DocId == NO_MORE_DOCS) {</span>
<span class="nc" id="L160"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L161"> return docId;</span>
}
}
// check equal docId, otherwise next
<span class="nc bnc" id="L165" title="All 2 branches missed."> if (spans1DocId == spans2DocId) {</span>
<span class="nc" id="L166"> docId = spans1DocId;</span>
// check match
<span class="nc bnc" id="L168" title="All 2 branches missed."> if (goToNextStartPosition()) {</span>
<span class="nc" id="L169"> return docId;</span>
} else {
<span class="nc" id="L171"> return nextDoc();</span>
}
} else {
<span class="nc" id="L174"> return nextDoc();</span>
}
}
}
/* (non-Javadoc)
* @see org.apache.lucene.search.DocIdSetIterator#cost()
*/
@Override
public long cost() {
<span class="nc" id="L184"> return 0;</span>
}
/* (non-Javadoc)
* @see org.apache.lucene.search.DocIdSetIterator#docID()
*/
@Override
public int docID() {
<span class="fc" id="L192"> return docId;</span>
}
/* (non-Javadoc)
* @see org.apache.lucene.search.DocIdSetIterator#nextDoc()
*/
@Override
public int nextDoc() throws IOException {
<span class="fc" id="L200"> reset();</span>
<span class="pc bpc" id="L201" title="1 of 2 branches missed."> while (!goToNextDoc())</span>
<span class="nc" id="L202"> ;</span>
<span class="fc" id="L203"> return docId;</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="L213" title="1 of 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L214"> return true;</span>
} else {
<span class="fc" id="L216"> int spans1DocId = spans1.spans.nextDoc();</span>
<span class="fc" id="L217"> int spans2DocId = spans2.spans.docID();</span>
<span class="fc" id="L218"> docId = Math.max(spans1DocId, spans2DocId);</span>
<span class="fc bfc" id="L219" title="All 4 branches covered."> while (spans1DocId != spans2DocId && docId != NO_MORE_DOCS) {</span>
<span class="pc bpc" id="L220" title="1 of 2 branches missed."> if (spans1DocId < spans2DocId) {</span>
<span class="nc" id="L221"> spans1DocId = spans1.spans.advance(spans2DocId);</span>
<span class="nc" id="L222"> docId = spans1DocId;</span>
} else {
<span class="fc" id="L224"> spans2DocId = spans2.spans.advance(spans1DocId);</span>
<span class="fc" id="L225"> docId = spans2DocId;</span>
}
}
<span class="fc bfc" id="L228" title="All 2 branches covered."> if (docId != NO_MORE_DOCS) {</span>
<span class="pc bpc" id="L229" title="1 of 2 branches missed."> if (!goToNextStartPosition()) {</span>
<span class="nc" id="L230"> reset();</span>
<span class="nc" id="L231"> return false;</span>
}
}
<span class="fc" id="L234"> 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;
int nextSpans1EndPosition;
<span class="fc" id="L247"> while ((nextSpans1StartPosition = spans1.spans</span>
<span class="fc bfc" id="L248" title="All 2 branches covered."> .nextStartPosition()) != NO_MORE_POSITIONS) {</span>
<span class="fc" id="L249"> nextSpans1EndPosition = spans1.spans.endPosition();</span>
<span class="fc bfc" id="L250" title="All 2 branches covered."> if (nextSpans1EndPosition == lastSpans2StartPosition) {</span>
<span class="fc" id="L251"> return true;</span>
} else {
//clean up
<span class="fc bfc" id="L254" title="All 2 branches covered."> if(lastSpans2StartPosition<nextSpans1StartPosition) {</span>
<span class="fc" id="L255"> previousSpans2StartPositions.clear();</span>
<span class="pc bpc" id="L256" title="1 of 2 branches missed."> } else if(previousSpans2StartPositions.contains(nextSpans1EndPosition)) {</span>
<span class="nc" id="L257"> return true;</span>
}
//try to find match
<span class="fc bfc" id="L260" title="All 2 branches covered."> while (lastSpans2StartPosition < nextSpans1EndPosition) {</span>
<span class="pc bpc" id="L261" title="1 of 2 branches missed."> if (lastSpans2StartPosition != NO_MORE_POSITIONS) {</span>
<span class="fc" id="L262"> lastSpans2StartPosition = spans2.spans.nextStartPosition();</span>
}
<span class="fc bfc" id="L264" title="All 2 branches covered."> if (lastSpans2StartPosition == NO_MORE_POSITIONS) {</span>
<span class="pc bpc" id="L265" title="1 of 2 branches missed."> if(previousSpans2StartPositions.isEmpty()) {</span>
<span class="fc" id="L266"> noMorePositions = true;</span>
<span class="fc" id="L267"> return false;</span>
}
} else {
<span class="fc bfc" id="L270" title="All 2 branches covered."> if(lastSpans2StartPosition>=nextSpans1StartPosition) {</span>
<span class="fc" id="L271"> previousSpans2StartPositions.add(lastSpans2StartPosition);</span>
}
<span class="fc bfc" id="L273" title="All 2 branches covered."> if (nextSpans1EndPosition == lastSpans2StartPosition) {</span>
<span class="fc" id="L274"> return true;</span>
}
}
}
}
}
<span class="fc" id="L280"> return false;</span>
}
/**
* Reset.
*/
private void reset() {
<span class="fc" id="L287"> calledNextStartPosition = false;</span>
<span class="fc" id="L288"> noMorePositions = false;</span>
<span class="fc" id="L289"> lastSpans2StartPosition = -1;</span>
<span class="fc" id="L290"> previousSpans2StartPositions.clear();</span>
<span class="fc" id="L291"> }</span>
}
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