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="../.resources/report.css" type="text/css"/><link rel="shortcut icon" href="../.resources/report.gif" type="image/gif"/><title>MtasSpanFullyAlignedWithSpans.java</title><link rel="stylesheet" href="../.resources/prettify.css" type="text/css"/><script type="text/javascript" src="../.resources/prettify.js"></script></head><body onload="window['PR_TAB_WIDTH']=4;prettyPrint()"><div class="breadcrumb" id="breadcrumb"><span class="info"><a href="../.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 org.apache.lucene.search.spans.Spans;
import mtas.search.spans.MtasSpanFullyAlignedWithQuery.MtasSpanFullyAlignedWithQuerySpans;
import mtas.search.spans.util.MtasSpans;
/**
* The Class MtasSpanIntersectingSpans.
*/
public class MtasSpanFullyAlignedWithSpans extends Spans implements MtasSpans {
/** The spans2. */
private MtasSpanFullyAlignedWithQuerySpans spans1;
private MtasSpanFullyAlignedWithQuerySpans spans2;
/** The last spans2 end position. */
private int lastSpans2StartPosition;
private int lastSpans2EndPosition;
private int previousSpans2StartPosition;
private HashSet<Integer> previousSpans2EndPositions;
/** The no more positions. */
private boolean calledNextStartPosition;
private boolean noMorePositions;
/** The doc id. */
private int docId;
/**
* Instantiates a new mtas span intersecting spans.
*
* @param mtasSpanFullyAlignedWithQuery
* the mtas span intersecting query
* @param spans1
* the spans1
* @param spans2
* the spans2
*/
public MtasSpanFullyAlignedWithSpans(
MtasSpanFullyAlignedWithQuery mtasSpanFullyAlignedWithQuery,
MtasSpanFullyAlignedWithQuerySpans spans1,
MtasSpanFullyAlignedWithQuerySpans spans2) {
<span class="nc" id="L47"> super();</span>
<span class="nc" id="L48"> docId = -1;</span>
<span class="nc" id="L49"> this.spans1 = spans1;</span>
<span class="nc" id="L50"> this.spans2 = spans2;</span>
<span class="nc" id="L51"> previousSpans2EndPositions = new HashSet<Integer>();</span>
<span class="nc" id="L52"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#nextStartPosition()
*/
@Override
public int nextStartPosition() throws IOException {
// no document
<span class="nc bnc" id="L62" title="All 4 branches missed."> if (docId == -1 || docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L63"> throw new IOException("no document");</span>
// finished
<span class="nc bnc" id="L65" title="All 2 branches missed."> } else if (noMorePositions) {</span>
<span class="nc" id="L66"> return NO_MORE_POSITIONS;</span>
// littleSpans already at start match, because of check for matching
// document
<span class="nc bnc" id="L69" title="All 2 branches missed."> } else if (!calledNextStartPosition) {</span>
<span class="nc" id="L70"> calledNextStartPosition = true;</span>
<span class="nc" id="L71"> return spans1.spans.startPosition();</span>
// compute next match
} else {
<span class="nc bnc" id="L74" title="All 2 branches missed."> if (goToNextStartPosition()) {</span>
// match found
<span class="nc" id="L76"> return spans1.spans.startPosition();</span>
} else {
// no more matches: document finished
<span class="nc" id="L79"> return NO_MORE_POSITIONS;</span>
}
}
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#startPosition()
*/
@Override
public int startPosition() {
<span class="nc bnc" id="L91" title="All 4 branches missed."> return calledNextStartPosition</span>
<span class="nc" id="L92"> ? (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="nc bnc" id="L103" title="All 4 branches missed."> return calledNextStartPosition</span>
<span class="nc" id="L104"> ? (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="L115" title="All 4 branches missed."> return calledNextStartPosition ? (noMorePositions ? 0</span>
<span class="nc" id="L116"> : 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="L128"> spans1.spans.collect(collector);</span>
<span class="nc" id="L129"> spans2.spans.collect(collector);</span>
<span class="nc" id="L130"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.Spans#positionsCost()
*/
@Override
public float positionsCost() {
<span class="nc" id="L139"> return 0;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#docID()
*/
@Override
public int docID() {
<span class="nc" id="L149"> return docId;</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#nextDoc()
*/
@Override
public int nextDoc() throws IOException {
<span class="nc" id="L159"> reset();</span>
<span class="nc bnc" id="L160" title="All 2 branches missed."> while (!goToNextDoc())</span>
<span class="nc" id="L161"> ;</span>
<span class="nc" 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 {
// advance 1
<span class="nc" id="L181"> int spans1DocId = spans1.spans.docID();</span>
<span class="nc bnc" id="L182" title="All 2 branches missed."> if (spans1DocId < target) {</span>
<span class="nc" id="L183"> spans1DocId = spans1.spans.advance(target);</span>
<span class="nc bnc" id="L184" title="All 2 branches missed."> if (spans1DocId == NO_MORE_DOCS) {</span>
<span class="nc" id="L185"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L186"> return docId;</span>
}
<span class="nc" id="L188"> target = Math.max(target, spans1DocId);</span>
}
<span class="nc" id="L190"> int spans2DocId = spans2.spans.docID();</span>
// advance 2
<span class="nc bnc" id="L192" title="All 2 branches missed."> if (spans2DocId < target) {</span>
<span class="nc" id="L193"> spans2DocId = spans2.spans.advance(target);</span>
<span class="nc bnc" id="L194" title="All 2 branches missed."> if (spans2DocId == NO_MORE_DOCS) {</span>
<span class="nc" id="L195"> docId = NO_MORE_DOCS;</span>
<span class="nc" id="L196"> return docId;</span>
}
}
// check equal docId, otherwise next
<span class="nc bnc" id="L200" title="All 2 branches missed."> if (spans1DocId == spans2DocId) {</span>
<span class="nc" id="L201"> docId = spans1DocId;</span>
// check match
<span class="nc bnc" id="L203" title="All 2 branches missed."> if (goToNextStartPosition()) {</span>
<span class="nc" id="L204"> return docId;</span>
} else {
<span class="nc" id="L206"> return nextDoc();</span>
}
} else {
<span class="nc" id="L209"> 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="nc bnc" id="L222" title="All 2 branches missed."> if (docId == NO_MORE_DOCS) {</span>
<span class="nc" id="L223"> return true;</span>
} else {
<span class="nc" id="L225"> int spans1DocId = spans1.spans.nextDoc();</span>
<span class="nc" id="L226"> int spans2DocId = spans2.spans.docID();</span>
<span class="nc" id="L227"> docId = Math.max(spans1DocId, spans2DocId);</span>
<span class="nc bnc" id="L228" title="All 4 branches missed."> while (spans1DocId != spans2DocId && docId != NO_MORE_DOCS) {</span>
<span class="nc bnc" id="L229" title="All 2 branches missed."> if (spans1DocId < spans2DocId) {</span>
<span class="nc" id="L230"> spans1DocId = spans1.spans.advance(spans2DocId);</span>
<span class="nc" id="L231"> docId = spans1DocId;</span>
} else {
<span class="nc" id="L233"> spans2DocId = spans2.spans.advance(spans1DocId);</span>
<span class="nc" id="L234"> docId = spans2DocId;</span>
}
}
<span class="nc bnc" id="L237" title="All 2 branches missed."> if (docId != NO_MORE_DOCS) {</span>
<span class="nc bnc" id="L238" title="All 2 branches missed."> if (!goToNextStartPosition()) {</span>
<span class="nc" id="L239"> reset();</span>
<span class="nc" id="L240"> return false;</span>
}
}
<span class="nc" id="L243"> 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="nc" id="L257"> while ((nextSpans1StartPosition = spans1.spans</span>
<span class="nc bnc" id="L258" title="All 2 branches missed."> .nextStartPosition()) != NO_MORE_POSITIONS) {</span>
<span class="nc" id="L259"> nextSpans1EndPosition = spans1.spans.endPosition();</span>
<span class="nc bnc" id="L260" title="All 2 branches missed."> if (nextSpans1StartPosition == previousSpans2StartPosition) {</span>
<span class="nc bnc" id="L261" title="All 2 branches missed."> if (previousSpans2EndPositions.contains(nextSpans1EndPosition)) {</span>
<span class="nc" id="L262"> return true;</span>
}
<span class="nc bnc" id="L264" title="All 2 branches missed."> } else if (nextSpans1StartPosition == lastSpans2StartPosition) {</span>
<span class="nc bnc" id="L265" title="All 2 branches missed."> if (nextSpans1EndPosition == lastSpans2EndPosition) {</span>
<span class="nc" id="L266"> return true;</span>
}
} else {
<span class="nc bnc" id="L269" title="All 2 branches missed."> while (lastSpans2StartPosition <= nextSpans1StartPosition) {</span>
<span class="nc" id="L270"> nextSpans2StartPosition = spans2.spans.nextStartPosition();</span>
<span class="nc bnc" id="L271" title="All 2 branches missed."> if (nextSpans2StartPosition == NO_MORE_POSITIONS) {</span>
<span class="nc" id="L272"> noMorePositions = true;</span>
<span class="nc" id="L273"> return false;</span>
} else {
<span class="nc" id="L275"> nextSpans2EndPosition = spans2.spans.endPosition();</span>
<span class="nc bnc" id="L276" title="All 4 branches missed."> if (lastSpans2StartPosition == nextSpans2StartPosition</span>
&& nextSpans1StartPosition == nextSpans2StartPosition) {
<span class="nc bnc" id="L278" title="All 2 branches missed."> if (previousSpans2StartPosition != lastSpans2StartPosition) {</span>
<span class="nc" id="L279"> previousSpans2StartPosition = lastSpans2StartPosition;</span>
<span class="nc" id="L280"> previousSpans2EndPositions.clear();</span>
}
<span class="nc" id="L282"> previousSpans2EndPositions.add(lastSpans2EndPosition);</span>
}
<span class="nc" id="L284"> lastSpans2StartPosition = nextSpans2StartPosition;</span>
<span class="nc" id="L285"> lastSpans2EndPosition = nextSpans2EndPosition;</span>
<span class="nc bnc" id="L286" title="All 4 branches missed."> if (nextSpans1StartPosition == nextSpans2StartPosition</span>
&& nextSpans1EndPosition == nextSpans2EndPosition) {
<span class="nc" id="L288"> return true;</span>
}
}
}
}
}
<span class="nc" id="L295"> noMorePositions = true;</span>
<span class="nc" id="L296"> return false;</span>
}
/**
* Reset.
*/
private void reset() {
<span class="nc" id="L303"> calledNextStartPosition = false;</span>
<span class="nc" id="L304"> noMorePositions = false;</span>
<span class="nc" id="L305"> lastSpans2StartPosition = -1;</span>
<span class="nc" id="L306"> lastSpans2EndPosition = -1;</span>
<span class="nc" id="L307"> previousSpans2StartPosition = -1;</span>
<span class="nc" id="L308"> previousSpans2EndPositions.clear();</span>
<span class="nc" id="L309"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.DocIdSetIterator#cost()
*/
@Override
public long cost() {
<span class="nc" id="L318"> return 0;</span>
}
}
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