MtasExtendedSpanTermQuery.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>MtasExtendedSpanTermQuery.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.util</a> > <span class="el_source">MtasExtendedSpanTermQuery.java</span></div><h1>MtasExtendedSpanTermQuery.java</h1><pre class="source lang-java linenums">package mtas.search.spans.util;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
import mtas.analysis.token.MtasToken;
import mtas.codec.util.CodecUtil;
import org.apache.lucene.index.FieldInfo;
import org.apache.lucene.index.IndexReaderContext;
import org.apache.lucene.index.LeafReader;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.index.PostingsEnum;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.TermContext;
import org.apache.lucene.index.TermState;
import org.apache.lucene.index.Terms;
import org.apache.lucene.index.TermsEnum;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.spans.FilterSpans;
import org.apache.lucene.search.spans.SpanTermQuery;
import org.apache.lucene.search.spans.SpanWeight;
import org.apache.lucene.search.spans.Spans;
/**
* The Class MtasExtendedSpanTermQuery.
*/
public class MtasExtendedSpanTermQuery extends SpanTermQuery {
/** The prefix. */
private String prefix;
/** The value. */
private String value;
/** The single position. */
private boolean singlePosition;
/** The local term. */
private Term localTerm;
/**
* Instantiates a new mtas extended span term query.
*
* @param term the term
*/
public MtasExtendedSpanTermQuery(Term term) {
<span class="nc" id="L49"> this(term, true);</span>
<span class="nc" id="L50"> }</span>
/**
* Instantiates a new mtas extended span term query.
*
* @param term the term
* @param singlePosition the single position
*/
private MtasExtendedSpanTermQuery(Term term, boolean singlePosition) {
<span class="nc" id="L59"> this(new SpanTermQuery(term), singlePosition);</span>
<span class="nc" id="L60"> }</span>
/**
* Instantiates a new mtas extended span term query.
*
* @param query the query
* @param singlePosition the single position
*/
public MtasExtendedSpanTermQuery(SpanTermQuery query,
boolean singlePosition) {
<span class="fc" id="L70"> super(query.getTerm());</span>
<span class="fc" id="L71"> localTerm = query.getTerm(); </span>
<span class="fc" id="L72"> this.singlePosition = singlePosition;</span>
<span class="fc" id="L73"> int i = localTerm.text().indexOf(MtasToken.DELIMITER);</span>
<span class="pc bpc" id="L74" title="1 of 2 branches missed."> if (i >= 0) {</span>
<span class="fc" id="L75"> prefix = localTerm.text().substring(0, i);</span>
<span class="fc" id="L76"> value = localTerm.text().substring((i + MtasToken.DELIMITER.length()));</span>
<span class="fc bfc" id="L77" title="All 2 branches covered."> value = (value.length() > 0) ? value : null;</span>
} else {
<span class="nc" id="L79"> prefix = localTerm.text();</span>
<span class="nc" id="L80"> value = null;</span>
}
<span class="fc" id="L82"> }</span>
/*
* (non-Javadoc)
*
* @see
* org.apache.lucene.search.spans.SpanTermQuery#createWeight(org.apache.lucene
* .search.IndexSearcher, boolean)
*/
@Override
public SpanWeight createWeight(IndexSearcher searcher, boolean needsScores)
throws IOException {
final TermContext context;
<span class="fc" id="L95"> final IndexReaderContext topContext = searcher.getTopReaderContext();</span>
<span class="pc bpc" id="L96" title="1 of 2 branches missed."> if (termContext == null) {</span>
<span class="fc" id="L97"> context = TermContext.build(topContext, localTerm);</span>
} else {
<span class="nc" id="L99"> context = termContext;</span>
}
<span class="pc bpc" id="L101" title="1 of 2 branches missed."> return new SpanTermWeight(context, searcher,</span>
<span class="pc" id="L102"> needsScores ? Collections.singletonMap(localTerm, context) : null);</span>
}
/**
* The Class SpanTermWeight.
*/
<span class="pc bpc" id="L108" title="1 of 2 branches missed."> public class SpanTermWeight extends SpanWeight {</span>
/** The term context. */
final TermContext termContext;
/**
* Instantiates a new span term weight.
*
* @param termContext the term context
* @param searcher the searcher
* @param terms the terms
* @throws IOException Signals that an I/O exception has occurred.
*/
public SpanTermWeight(TermContext termContext, IndexSearcher searcher,
<span class="fc" id="L122"> Map<Term, TermContext> terms) throws IOException {</span>
<span class="fc" id="L123"> super(MtasExtendedSpanTermQuery.this, searcher, terms);</span>
<span class="fc" id="L124"> this.termContext = termContext;</span>
<span class="pc bpc" id="L125" title="2 of 4 branches missed."> assert termContext != null : "TermContext must not be null";</span>
<span class="fc" id="L126"> }</span>
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.Weight#extractTerms(java.util.Set)
*/
@Override
public void extractTerms(Set<Term> terms) {
<span class="nc" id="L135"> terms.add(localTerm);</span>
<span class="nc" id="L136"> }</span>
/*
* (non-Javadoc)
*
* @see
* org.apache.lucene.search.spans.SpanWeight#extractTermContexts(java.util
* .Map)
*/
@Override
public void extractTermContexts(Map<Term, TermContext> contexts) {
<span class="fc" id="L147"> contexts.put(localTerm, termContext);</span>
<span class="fc" id="L148"> }</span>
/*
* (non-Javadoc)
*
* @see
* org.apache.lucene.search.spans.SpanWeight#getSpans(org.apache.lucene.
* index.LeafReaderContext,
* org.apache.lucene.search.spans.SpanWeight.Postings)
*/
@Override
public Spans getSpans(final LeafReaderContext context,
Postings requiredPostings) throws IOException {
<span class="fc" id="L161"> final TermState state = termContext.get(context.ord);</span>
<span class="fc bfc" id="L162" title="All 2 branches covered."> if (state == null) { // term is not present in that reader</span>
<span class="pc bpc" id="L163" title="2 of 4 branches missed."> assert context.reader().docFreq(</span>
<span class="fc" id="L164"> localTerm) == 0 : "no termstate found but term exists in reader term="</span>
<span class="nc" id="L165"> + localTerm;</span>
<span class="fc" id="L166"> return null;</span>
}
<span class="fc" id="L169"> final Terms terms = context.reader().terms(localTerm.field());</span>
<span class="pc bpc" id="L170" title="1 of 2 branches missed."> if (terms == null)</span>
<span class="nc" id="L171"> return null;</span>
<span class="pc bpc" id="L172" title="1 of 2 branches missed."> if (!terms.hasPositions())</span>
<span class="nc" id="L173"> throw new IllegalStateException("field \"" + localTerm.field()</span>
+ "\" was indexed without position data; cannot run SpanTermQuery (term="
<span class="nc" id="L175"> + localTerm.text() + ")");</span>
<span class="fc" id="L177"> final TermsEnum termsEnum = terms.iterator();</span>
<span class="fc" id="L178"> termsEnum.seekExact(localTerm.bytes(), state);</span>
final PostingsEnum postings;
Spans matchSpans;
try {
// get leafreader
<span class="fc" id="L185"> LeafReader r = context.reader();</span>
// get delegate
<span class="fc" id="L188"> Boolean hasMethod = true;</span>
<span class="fc bfc" id="L189" title="All 2 branches covered."> while (hasMethod) {</span>
<span class="fc" id="L190"> hasMethod = false;</span>
<span class="fc" id="L191"> Method[] methods = r.getClass().getMethods();</span>
<span class="fc bfc" id="L192" title="All 2 branches covered."> for (Method m : methods) {</span>
<span class="fc bfc" id="L193" title="All 2 branches covered."> if (m.getName().equals("getDelegate")) {</span>
<span class="fc" id="L194"> hasMethod = true;</span>
<span class="fc" id="L195"> r = (LeafReader) m.invoke(r, (Object[]) null);</span>
<span class="fc" id="L196"> break;</span>
}
}
<span class="fc" id="L199"> }</span>
<span class="fc" id="L201"> FieldInfo fieldInfo = r.getFieldInfos().fieldInfo(field);</span>
<span class="fc bfc" id="L203" title="All 2 branches covered."> if (CodecUtil.isSinglePositionPrefix(fieldInfo, prefix)) {</span>
<span class="fc" id="L204"> postings = termsEnum.postings(null,</span>
<span class="fc" id="L205"> requiredPostings.getRequiredPostings());</span>
<span class="fc" id="L206"> matchSpans = new MtasExtendedTermSpans(postings, localTerm, true);</span>
} else {
<span class="fc" id="L208"> postings = termsEnum.postings(null, requiredPostings</span>
<span class="fc" id="L209"> .atLeast(Postings.PAYLOADS).getRequiredPostings());</span>
<span class="fc" id="L210"> matchSpans = new MtasExtendedTermSpans(postings, localTerm, false);</span>
}
<span class="fc bfc" id="L212" title="All 2 branches covered."> if(singlePosition) {</span>
<span class="pc bpc" id="L213" title="1 of 2 branches missed."> return new FilterSpans(matchSpans) {</span>
@Override
protected AcceptStatus accept(Spans candidate)
throws IOException {
<span class="pc bpc" id="L217" title="2 of 4 branches missed."> assert candidate.startPosition() != candidate.endPosition();</span>
<span class="fc" id="L218"> if((candidate.endPosition()</span>
<span class="pc bpc" id="L219" title="1 of 2 branches missed."> - candidate.startPosition()) == 1) {</span>
<span class="fc" id="L220"> return AcceptStatus.YES;</span>
} else {
<span class="nc" id="L222"> return AcceptStatus.NO;</span>
}
}
};
} else {
<span class="fc" id="L227"> return matchSpans;</span>
}
<span class="nc" id="L229"> } catch (Exception e) {</span>
// e.printStackTrace();
<span class="nc" id="L231"> throw new IOException("Can't get reader: " + e.getMessage(), e);</span>
}
}
}
/*
* (non-Javadoc)
*
* @see
* org.apache.lucene.search.spans.SpanTermQuery#toString(java.lang.String)
*/
@Override
public String toString(String field) {
<span class="nc" id="L245"> StringBuilder buffer = new StringBuilder();</span>
<span class="nc" id="L246"> buffer.append(this.getClass().getSimpleName() + "([");</span>
<span class="nc bnc" id="L247" title="All 2 branches missed."> if (value == null) {</span>
<span class="nc" id="L248"> buffer.append(field + ":" + prefix);</span>
} else {
<span class="nc" id="L250"> buffer.append(field + ":" + prefix + "=" + value);</span>
}
<span class="nc" id="L252"> buffer.append("])");</span>
<span class="nc" id="L253"> return buffer.toString();</span>
}
/*
* (non-Javadoc)
*
* @see org.apache.lucene.search.spans.SpanTermQuery#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
<span class="pc bpc" id="L263" title="1 of 2 branches missed."> if (this == obj)</span>
<span class="nc" id="L264"> return true;</span>
<span class="pc bpc" id="L265" title="1 of 2 branches missed."> if (obj == null)</span>
<span class="nc" id="L266"> return false;</span>
<span class="pc bpc" id="L267" title="1 of 2 branches missed."> if (getClass() != obj.getClass())</span>
<span class="nc" id="L268"> return false;</span>
<span class="fc" id="L269"> MtasExtendedSpanTermQuery other = (MtasExtendedSpanTermQuery) obj;</span>
<span class="pc bpc" id="L270" title="3 of 4 branches missed."> return other.localTerm.equals(localTerm) && (other.singlePosition == singlePosition);</span>
}
/* (non-Javadoc)
* @see org.apache.lucene.search.spans.SpanTermQuery#hashCode()
*/
@Override
public int hashCode() {
<span class="fc" id="L278"> int h = this.getClass().getSimpleName().hashCode();</span>
<span class="fc" id="L279"> h = (h * 5) ^ localTerm.hashCode();</span>
<span class="fc bfc" id="L280" title="All 2 branches covered."> if(singlePosition) {</span>
<span class="fc" id="L281"> h+=1;</span>
}
<span class="fc" id="L283"> return h;</span>
}
}
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