MtasSpanPrecededBySpans.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>MtasSpanPrecededBySpans.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">MtasSpanPrecededBySpans.java</span></div><h1>MtasSpanPrecededBySpans.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.TwoPhaseIterator;
import org.apache.lucene.search.spans.SpanCollector;
import mtas.search.spans.MtasSpanPrecededByQuery.MtasSpanPrecededByQuerySpans;
import mtas.search.spans.util.MtasSpans;
/**
* The Class MtasSpanPrecededBySpans.
*/
public class MtasSpanPrecededBySpans extends MtasSpans {
/** The query. */
private MtasSpanPrecededByQuery query;
/** The spans 1. */
private MtasSpanPrecededByQuerySpans spans1;
/** The spans 2. */
private MtasSpanPrecededByQuerySpans spans2;
/** The last spans 2 start position. */
private int lastSpans2StartPosition;
/** The last spans 2 end position. */
private int lastSpans2EndPosition;
/** The maximum spans 2 end position. */
private int maximumSpans2EndPosition;
/** 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;
/** The doc id. */
private int docId;
/**
* Instantiates a new mtas span preceded by spans.
*
* @param query the query
* @param spans1 the spans 1
* @param spans2 the spans 2
*/
public MtasSpanPrecededBySpans(MtasSpanPrecededByQuery query,
MtasSpanPrecededByQuerySpans spans1,
MtasSpanPrecededByQuerySpans spans2) {
<span class="fc" id="L56"> super();</span>
<span class="fc" id="L57"> docId = -1;</span>
<span class="fc" id="L58"> this.query = query;</span>
<span class="fc" id="L59"> this.spans1 = spans1;</span>
<span class="fc" id="L60"> this.spans2 = spans2;</span>
<span class="fc" id="L61"> previousSpans2EndPositions = new HashSet<>();</span>
<span class="fc" id="L62"> }</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="L73"> spans1.spans.collect(collector);</span>
<span class="nc" id="L74"> spans2.spans.collect(collector);</span>
<span class="nc" id="L75"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#endPosition()
*/
@Override
public int endPosition() {
<span class="pc bpc" id="L84" title="1 of 2 branches missed."> if (calledNextStartPosition) {</span>
<span class="pc bpc" id="L85" title="1 of 2 branches missed."> return noMorePositions ? NO_MORE_POSITIONS : spans1.spans.endPosition();</span>
} else {
<span class="nc" id="L87"> return -1;</span>
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#nextStartPosition()
*/
@Override
public int nextStartPosition() throws IOException {
// no document
<span class="pc bpc" id="L99" title="2 of 4 branches missed."> if (docId == -1 || docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L100"> throw new IOException("no document");</span>
// finished
<span class="pc bpc" id="L102" title="1 of 2 branches missed."> } else if (noMorePositions) {</span>
<span class="nc" id="L103"> return NO_MORE_POSITIONS;</span>
// littleSpans already at start match, because of check for matching
// document
<span class="fc bfc" id="L106" title="All 2 branches covered."> } else if (!calledNextStartPosition) {</span>
<span class="fc" id="L107"> calledNextStartPosition = true;</span>
<span class="fc" id="L108"> return spans1.spans.startPosition();</span>
// compute next match
} else {
<span class="fc bfc" id="L111" title="All 2 branches covered."> if (goToNextStartPosition()) {</span>
// match found
<span class="fc" id="L113"> return spans1.spans.startPosition();</span>
} else {
// no more matches: document finished
<span class="fc" id="L116"> return NO_MORE_POSITIONS;</span>
}
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#positionsCost()
*/
@Override
public float positionsCost() {
<span class="nc" id="L128"> return 0;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#startPosition()
*/
@Override
public int startPosition() {
<span class="pc bpc" id="L138" title="1 of 2 branches missed."> if (calledNextStartPosition) {</span>
<span class="pc bpc" id="L139" title="1 of 2 branches missed."> return noMorePositions ? NO_MORE_POSITIONS : spans1.spans.startPosition();</span>
} else {
<span class="nc" id="L141"> return -1;</span>
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#width()
*/
@Override
public int width() {
<span class="nc bnc" id="L152" title="All 2 branches missed."> if (calledNextStartPosition) {</span>
<span class="nc bnc" id="L153" title="All 2 branches missed."> return noMorePositions ? 0</span>
<span class="nc" id="L154"> : spans1.spans.endPosition() - spans1.spans.startPosition();</span>
} else {
<span class="nc" id="L156"> return 0;</span>
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#advance(int)
*/
@Override
public int advance(int target) throws IOException {
<span class="nc" id="L167"> reset();</span>
<span class="nc bnc" id="L168" title="All 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L169"> return docId;</span>
<span class="nc bnc" id="L170" title="All 2 branches missed."> } else if (target < docId) {</span>
// should not happen
<span class="nc" id="L172"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L173"> return docId;</span>
} else {
// advance 1
<span class="nc" id="L176"> int spans1DocId = spans1.spans.docID();</span>
<span class="nc" id="L177"> int newTarget = target;</span>
<span class="nc bnc" id="L178" title="All 2 branches missed."> if (spans1DocId < newTarget) {</span>
<span class="nc" id="L179"> spans1DocId = spans1.spans.advance(target);</span>
<span class="nc bnc" id="L180" title="All 2 branches missed."> if (spans1DocId == NO_MORE_DOCS) {</span>
<span class="nc" id="L181"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L182"> return docId;</span>
}
<span class="nc" id="L184"> newTarget = Math.max(newTarget, spans1DocId);</span>
}
<span class="nc" id="L186"> int spans2DocId = spans2.spans.docID();</span>
// advance 2
<span class="nc bnc" id="L188" title="All 2 branches missed."> if (spans2DocId < newTarget) {</span>
<span class="nc" id="L189"> spans2DocId = spans2.spans.advance(newTarget);</span>
<span class="nc bnc" id="L190" title="All 2 branches missed."> if (spans2DocId == NO_MORE_DOCS) {</span>
<span class="nc" id="L191"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L192"> return docId;</span>
}
}
// check equal docId, otherwise next
<span class="nc bnc" id="L196" title="All 2 branches missed."> if (spans1DocId == spans2DocId) {</span>
<span class="nc" id="L197"> docId = spans1DocId;</span>
// check match
<span class="nc bnc" id="L199" title="All 2 branches missed."> if (goToNextStartPosition()) {</span>
<span class="nc" id="L200"> return docId;</span>
} else {
<span class="nc" id="L202"> return nextDoc();</span>
}
} else {
<span class="nc" id="L205"> return nextDoc();</span>
}
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#cost()
*/
@Override
public long cost() {
<span class="nc" id="L217"> return 0;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#docID()
*/
@Override
public int docID() {
<span class="fc" id="L227"> return docId;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#nextDoc()
*/
@Override
public int nextDoc() throws IOException {
<span class="fc" id="L237"> reset();</span>
<span class="pc bpc" id="L238" title="1 of 2 branches missed."> while (!goToNextDoc())</span>
<span class="nc" id="L239"> ;</span>
<span class="fc" id="L240"> 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="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>
} else {
<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;
<span class="fc" id="L282"> while ((nextSpans1StartPosition = spans1.spans</span>
<span class="fc bfc" id="L283" title="All 2 branches covered."> .nextStartPosition()) != NO_MORE_POSITIONS) {</span>
<span class="fc bfc" id="L284" title="All 2 branches covered."> if (nextSpans1StartPosition == lastSpans2EndPosition) {</span>
<span class="fc" id="L285"> return true;</span>
} else {
// clean up
<span class="fc bfc" id="L288" title="All 2 branches covered."> if (maximumSpans2EndPosition < nextSpans1StartPosition) {</span>
<span class="fc" id="L289"> previousSpans2EndPositions.clear();</span>
<span class="fc" id="L290"> maximumSpans2EndPosition = -1;</span>
<span class="fc" id="L291"> } else if (previousSpans2EndPositions</span>
<span class="pc bpc" id="L292" title="1 of 2 branches missed."> .contains(nextSpans1StartPosition)) {</span>
<span class="nc" id="L293"> return true;</span>
}
// try to find match
<span class="fc bfc" id="L296" title="All 2 branches covered."> while (lastSpans2StartPosition < nextSpans1StartPosition) {</span>
<span class="pc bpc" id="L297" title="1 of 2 branches missed."> if (lastSpans2StartPosition != NO_MORE_POSITIONS) {</span>
<span class="fc" id="L298"> lastSpans2StartPosition = spans2.spans.nextStartPosition();</span>
}
<span class="fc bfc" id="L300" title="All 2 branches covered."> if (lastSpans2StartPosition == NO_MORE_POSITIONS) {</span>
<span class="pc bpc" id="L301" title="1 of 2 branches missed."> if (previousSpans2EndPositions.isEmpty()) {</span>
<span class="fc" id="L302"> noMorePositions = true;</span>
<span class="fc" id="L303"> return false;</span>
}
} else {
<span class="fc" id="L306"> lastSpans2EndPosition = spans2.spans.endPosition();</span>
<span class="fc bfc" id="L307" title="All 2 branches covered."> if (lastSpans2EndPosition >= nextSpans1StartPosition) {</span>
<span class="fc" id="L308"> previousSpans2EndPositions.add(lastSpans2EndPosition);</span>
<span class="fc" id="L309"> maximumSpans2EndPosition = Math.max(maximumSpans2EndPosition,</span>
lastSpans2EndPosition);
}
<span class="fc bfc" id="L312" title="All 2 branches covered."> if (nextSpans1StartPosition == lastSpans2EndPosition) {</span>
<span class="fc" id="L313"> return true;</span>
}
}
}
}
}
<span class="fc" id="L319"> return false;</span>
}
/**
* Reset.
*/
private void reset() {
<span class="fc" id="L326"> calledNextStartPosition = false;</span>
<span class="fc" id="L327"> noMorePositions = false;</span>
<span class="fc" id="L328"> lastSpans2StartPosition = -1;</span>
<span class="fc" id="L329"> lastSpans2EndPosition = -1;</span>
<span class="fc" id="L330"> maximumSpans2EndPosition = -1;</span>
<span class="fc" id="L331"> previousSpans2EndPositions.clear();</span>
<span class="fc" id="L332"> }</span>
/* (non-Javadoc)
* @see mtas.search.spans.util.MtasSpans#asTwoPhaseIterator()
*/
@Override
public TwoPhaseIterator asTwoPhaseIterator() {
<span class="nc bnc" id="L339" title="All 6 branches missed."> if (spans1 == null || spans2 == null || !query.twoPhaseIteratorAllowed()) {</span>
<span class="nc" id="L340"> return null;</span>
} else {
// TODO
<span class="nc" id="L343"> return null;</span>
}
}
}
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