MtasSpanFullyAlignedWithSpans.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>MtasSpanFullyAlignedWithSpans.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">MtasSpanFullyAlignedWithSpans.java</span></div><h1>MtasSpanFullyAlignedWithSpans.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 mtas.search.spans.MtasSpanFullyAlignedWithQuery.MtasSpanFullyAlignedWithQuerySpans;
import mtas.search.spans.util.MtasSpans;
/**
* The Class MtasSpanFullyAlignedWithSpans.
*/
public class MtasSpanFullyAlignedWithSpans extends MtasSpans {
/** The spans 1. */
private MtasSpanFullyAlignedWithQuerySpans spans1;
/** The spans 2. */
private MtasSpanFullyAlignedWithQuerySpans spans2;
/** The last spans 2 start position. */
private int lastSpans2StartPosition;
/** The last spans 2 end position. */
private int lastSpans2EndPosition;
/** The previous spans 2 start position. */
private int previousSpans2StartPosition;
/** The previous spans 2 end positions. */
private HashSet<Integer> previousSpans2EndPositions;
/** The called next start position. */
private boolean calledNextStartPosition;
/** The no more positions. */
private boolean noMorePositions;
private boolean noMorePositionsSpan2;
/** The doc id. */
private int docId;
/**
* Instantiates a new mtas span fully aligned with spans.
*
* @param mtasSpanFullyAlignedWithQuery
* the mtas span fully aligned with query
* @param spans1
* the spans 1
* @param spans2
* the spans 2
*/
public MtasSpanFullyAlignedWithSpans(
MtasSpanFullyAlignedWithQuerySpans spans1,
MtasSpanFullyAlignedWithQuerySpans spans2) {
<span class="fc" id="L55"> super();</span>
<span class="fc" id="L56"> docId = -1;</span>
<span class="fc" id="L57"> this.spans1 = spans1;</span>
<span class="fc" id="L58"> this.spans2 = spans2;</span>
<span class="fc" id="L59"> previousSpans2EndPositions = new HashSet<>();</span>
<span class="fc" id="L60"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#nextStartPosition()
*/
@Override
public int nextStartPosition() throws IOException {
// no document
<span class="pc bpc" id="L70" title="2 of 4 branches missed."> if (docId == -1 || docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L71"> throw new IOException("no document");</span>
// finished
<span class="pc bpc" id="L73" title="1 of 2 branches missed."> } else if (noMorePositions) {</span>
<span class="nc" id="L74"> return NO_MORE_POSITIONS;</span>
// littleSpans already at start match, because of check for matching
// document
<span class="fc bfc" id="L77" title="All 2 branches covered."> } else if (!calledNextStartPosition) {</span>
<span class="fc" id="L78"> calledNextStartPosition = true;</span>
<span class="fc" id="L79"> return spans1.spans.startPosition();</span>
// compute next match
} else {
<span class="fc bfc" id="L82" title="All 2 branches covered."> if (goToNextStartPosition()) {</span>
// match found
<span class="fc" id="L84"> return spans1.spans.startPosition();</span>
} else {
// no more matches: document finished
<span class="fc" id="L87"> return NO_MORE_POSITIONS;</span>
}
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#startPosition()
*/
@Override
public int startPosition() {
<span class="pc bpc" id="L99" title="1 of 2 branches missed."> if(calledNextStartPosition) {</span>
<span class="pc bpc" id="L100" title="1 of 2 branches missed."> if(noMorePositions) {</span>
<span class="nc" id="L101"> return NO_MORE_POSITIONS;</span>
} else {
<span class="fc" id="L103"> return spans1.spans.startPosition();</span>
}
} else {
<span class="nc" id="L106"> return -1;</span>
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#endPosition()
*/
@Override
public int endPosition() {
<span class="pc bpc" id="L117" title="1 of 2 branches missed."> if(calledNextStartPosition) {</span>
<span class="pc bpc" id="L118" title="1 of 2 branches missed."> if(noMorePositions) {</span>
<span class="nc" id="L119"> return NO_MORE_POSITIONS;</span>
} else {
<span class="fc" id="L121"> return spans1.spans.endPosition();</span>
}
} else {
<span class="nc" id="L124"> return -1;</span>
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#width()
*/
@Override
public int width() {
<span class="nc bnc" id="L135" title="All 2 branches missed."> if(calledNextStartPosition) {</span>
<span class="nc bnc" id="L136" title="All 2 branches missed."> if(noMorePositions) {</span>
<span class="nc" id="L137"> return 0;</span>
} else {
<span class="nc" id="L139"> return spans1.spans.endPosition() - spans1.spans.startPosition();</span>
}
} else {
<span class="nc" id="L142"> return 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="L155"> spans1.spans.collect(collector);</span>
<span class="nc" id="L156"> spans2.spans.collect(collector);</span>
<span class="nc" id="L157"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#positionsCost()
*/
@Override
public float positionsCost() {
<span class="nc" id="L166"> return 0;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#docID()
*/
@Override
public int docID() {
<span class="fc" id="L176"> return docId;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#nextDoc()
*/
@Override
public int nextDoc() throws IOException {
<span class="fc" id="L186"> reset();</span>
<span class="pc bpc" id="L187" title="1 of 2 branches missed."> while (!goToNextDoc())</span>
<span class="nc" id="L188"> ;</span>
<span class="fc" id="L189"> 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="L199"> reset();</span>
<span class="nc bnc" id="L200" title="All 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L201"> return docId;</span>
<span class="nc bnc" id="L202" title="All 2 branches missed."> } else if (target < docId) {</span>
// should not happen
<span class="nc" id="L204"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L205"> return docId;</span>
} else {
// advance 1
<span class="nc" id="L208"> int spans1DocId = spans1.spans.docID();</span>
<span class="nc" id="L209"> int newTarget = target;</span>
<span class="nc bnc" id="L210" title="All 2 branches missed."> if (spans1DocId < newTarget) {</span>
<span class="nc" id="L211"> spans1DocId = spans1.spans.advance(target);</span>
<span class="nc bnc" id="L212" title="All 2 branches missed."> if (spans1DocId == NO_MORE_DOCS) {</span>
<span class="nc" id="L213"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L214"> return docId;</span>
}
<span class="nc" id="L216"> newTarget = Math.max(newTarget, spans1DocId);</span>
}
<span class="nc" id="L218"> int spans2DocId = spans2.spans.docID();</span>
// advance 2
<span class="nc bnc" id="L220" title="All 2 branches missed."> if (spans2DocId < newTarget) {</span>
<span class="nc" id="L221"> spans2DocId = spans2.spans.advance(newTarget);</span>
<span class="nc bnc" id="L222" title="All 2 branches missed."> if (spans2DocId == NO_MORE_DOCS) {</span>
<span class="nc" id="L223"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L224"> return docId;</span>
}
}
// check equal docId, otherwise next
<span class="nc bnc" id="L228" title="All 2 branches missed."> if (spans1DocId == spans2DocId) {</span>
<span class="nc" id="L229"> docId = spans1DocId;</span>
// check match
<span class="nc bnc" id="L231" title="All 2 branches missed."> if (goToNextStartPosition()) {</span>
<span class="nc" id="L232"> return docId;</span>
} else {
<span class="nc" id="L234"> return nextDoc();</span>
}
} else {
<span class="nc" id="L237"> 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="L250" title="1 of 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L251"> return true;</span>
} else {
<span class="fc" id="L253"> int spans1DocId = spans1.spans.nextDoc();</span>
<span class="fc" id="L254"> int spans2DocId = spans2.spans.docID();</span>
<span class="fc" id="L255"> docId = Math.max(spans1DocId, spans2DocId);</span>
<span class="fc bfc" id="L256" title="All 4 branches covered."> while (spans1DocId != spans2DocId && docId != NO_MORE_DOCS) {</span>
<span class="pc bpc" id="L257" title="1 of 2 branches missed."> if (spans1DocId < spans2DocId) {</span>
<span class="nc" id="L258"> spans1DocId = spans1.spans.advance(spans2DocId);</span>
<span class="nc" id="L259"> docId = spans1DocId;</span>
} else {
<span class="fc" id="L261"> spans2DocId = spans2.spans.advance(spans1DocId);</span>
<span class="fc" id="L262"> docId = spans2DocId;</span>
}
}
<span class="pc bpc" id="L265" title="1 of 4 branches missed."> if (docId != NO_MORE_DOCS && !goToNextStartPosition()) {</span>
<span class="nc" id="L266"> reset();</span>
<span class="nc" id="L267"> return false;</span>
}
<span class="fc" id="L269"> 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;
int nextSpans2StartPosition;
int nextSpans2EndPosition;
// loop over span1
<span class="fc" id="L286"> while ((nextSpans1StartPosition = spans1.spans</span>
<span class="fc bfc" id="L287" title="All 2 branches covered."> .nextStartPosition()) != NO_MORE_POSITIONS) {</span>
<span class="fc" id="L288"> nextSpans1EndPosition = spans1.spans.endPosition();</span>
<span class="fc bfc" id="L289" title="All 4 branches covered."> if (noMorePositionsSpan2</span>
&& nextSpans1StartPosition > lastSpans2StartPosition) {
<span class="fc" id="L291"> noMorePositions = true;</span>
<span class="fc" id="L292"> return false;</span>
// check if start/en span1 matches start/end span2 from last or previous
<span class="fc bfc" id="L294" title="All 6 branches covered."> } else if ((nextSpans1StartPosition == lastSpans2StartPosition</span>
&& nextSpans1EndPosition == lastSpans2EndPosition)
|| (nextSpans1StartPosition == previousSpans2StartPosition
<span class="fc bfc" id="L297" title="All 2 branches covered."> && previousSpans2EndPositions.contains(nextSpans1EndPosition))) {</span>
<span class="fc" id="L298"> return true;</span>
} else {
// try to find matching span2
<span class="fc bfc" id="L301" title="All 4 branches covered."> while (!noMorePositionsSpan2</span>
&& nextSpans1StartPosition >= lastSpans2StartPosition) {
// get new span2
<span class="fc" id="L304"> nextSpans2StartPosition = spans2.spans.nextStartPosition();</span>
// check for finished span2
<span class="fc bfc" id="L306" title="All 2 branches covered."> if (nextSpans2StartPosition == NO_MORE_POSITIONS) {</span>
<span class="fc" id="L307"> noMorePositionsSpan2 = true;</span>
} else {
// get end for new span2
<span class="fc" id="L310"> nextSpans2EndPosition = spans2.spans.endPosition();</span>
// check for registering last span2 as previous
<span class="fc bfc" id="L312" title="All 2 branches covered."> if (nextSpans1StartPosition <= lastSpans2StartPosition) {</span>
<span class="pc bpc" id="L313" title="1 of 2 branches missed."> if (previousSpans2StartPosition != lastSpans2StartPosition) {</span>
<span class="fc" id="L314"> previousSpans2StartPosition = lastSpans2StartPosition;</span>
<span class="fc" id="L315"> previousSpans2EndPositions.clear();</span>
}
<span class="fc" id="L317"> previousSpans2EndPositions.add(lastSpans2EndPosition);</span>
}
// register span2 as last
<span class="fc" id="L320"> lastSpans2StartPosition = nextSpans2StartPosition;</span>
<span class="fc" id="L321"> lastSpans2EndPosition = nextSpans2EndPosition;</span>
// check for match
<span class="fc bfc" id="L323" title="All 4 branches covered."> if (nextSpans1StartPosition == nextSpans2StartPosition</span>
&& nextSpans1EndPosition == nextSpans2EndPosition) {
<span class="fc" id="L325"> return true;</span>
}
}
}
}
}
<span class="fc" id="L332"> noMorePositions = true;</span>
<span class="fc" id="L333"> return false;</span>
}
/**
* Reset.
*/
private void reset() {
<span class="fc" id="L340"> calledNextStartPosition = false;</span>
<span class="fc" id="L341"> noMorePositions = false;</span>
<span class="fc" id="L342"> noMorePositionsSpan2 = false;</span>
<span class="fc" id="L343"> lastSpans2StartPosition = -1;</span>
<span class="fc" id="L344"> lastSpans2EndPosition = -1;</span>
<span class="fc" id="L345"> previousSpans2StartPosition = -1;</span>
<span class="fc" id="L346"> previousSpans2EndPositions.clear();</span>
<span class="fc" id="L347"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#cost()
*/
@Override
public long cost() {
<span class="nc" id="L356"> return 0;</span>
}
}
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