MtasSpanUniquePositionQuery.java.html 7.63 KB
<?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>MtasSpanUniquePositionQuery.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> &gt; <a href="index.source.html" class="el_package">mtas.search.spans.util</a> &gt; <span class="el_source">MtasSpanUniquePositionQuery.java</span></div><h1>MtasSpanUniquePositionQuery.java</h1><pre class="source lang-java linenums">package mtas.search.spans.util;

import java.io.IOException;
import java.util.Map;
import java.util.Set;

import mtas.search.similarities.MtasSimScorer;

import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.TermContext;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.similarities.Similarity.SimScorer;
import org.apache.lucene.search.spans.SpanWeight;
import org.apache.lucene.search.spans.Spans;

/**
 * The Class MtasSpanUniquePositionQuery.
 */
public class MtasSpanUniquePositionQuery extends MtasSpanQuery {

  /** The clause. */
  private MtasSpanQuery clause;

  /** The field. */
  private String field;

  /**
   * Instantiates a new mtas span unique position query.
   *
   * @param clause
   *          the clause
   */
  public MtasSpanUniquePositionQuery(MtasSpanQuery clause) {
<span class="fc" id="L36">    super(clause.getMinimumWidth(), clause.getMaximumWidth());</span>
<span class="fc" id="L37">    field = clause.getField();</span>
<span class="fc" id="L38">    this.clause = clause;</span>
<span class="fc" id="L39">  }</span>

  /**
   * Gets the clause.
   *
   * @return the clause
   */
  public MtasSpanQuery getClause() {
<span class="nc" id="L47">    return clause;</span>
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.apache.lucene.search.spans.SpanQuery#getField()
   */
  @Override
  public String getField() {
<span class="fc" id="L57">    return field;</span>
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.apache.lucene.search.Query#equals(java.lang.Object)
   */
  @Override
  public boolean equals(Object obj) {
<span class="fc bfc" id="L67" title="All 2 branches covered.">    if (this == obj)</span>
<span class="fc" id="L68">      return true;</span>
<span class="pc bpc" id="L69" title="1 of 2 branches missed.">    if (obj == null)</span>
<span class="nc" id="L70">      return false;</span>
<span class="pc bpc" id="L71" title="1 of 2 branches missed.">    if (getClass() != obj.getClass())</span>
<span class="nc" id="L72">      return false;</span>
<span class="fc" id="L73">    final MtasSpanUniquePositionQuery that = (MtasSpanUniquePositionQuery) obj;</span>
<span class="fc" id="L74">    return clause.equals(that.clause);</span>
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.apache.lucene.search.Query#hashCode()
   */
  @Override
  public int hashCode() {
<span class="fc" id="L84">    int h = this.getClass().getSimpleName().hashCode();</span>
<span class="fc" id="L85">    h = (h * 7) ^ clause.hashCode();</span>
<span class="fc" id="L86">    return h;</span>
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.apache.lucene.search.Query#toString(java.lang.String)
   */
  @Override
  public String toString(String field) {
<span class="nc" id="L96">    StringBuilder buffer = new StringBuilder();</span>
<span class="nc" id="L97">    buffer.append(this.getClass().getSimpleName() + &quot;([&quot;);</span>
<span class="nc" id="L98">    buffer.append(clause.toString(field));</span>
<span class="nc" id="L99">    buffer.append(&quot;])&quot;);</span>
<span class="nc" id="L100">    return buffer.toString();</span>
  }

  @Override
  public MtasSpanQuery rewrite(IndexReader reader) throws IOException {
<span class="fc" id="L105">    MtasSpanQuery newClause = clause.rewrite(reader);</span>
<span class="fc bfc" id="L106" title="All 2 branches covered.">    if (!newClause.equals(clause)) {</span>
<span class="fc" id="L107">      return new MtasSpanUniquePositionQuery(newClause).rewrite(reader);</span>
    } else {
<span class="fc" id="L109">      return super.rewrite(reader);</span>
    }
  }

  /*
   * (non-Javadoc)
   * 
   * @see
   * org.apache.lucene.search.spans.SpanQuery#createWeight(org.apache.lucene.
   * search.IndexSearcher, boolean)
   */
  @Override
  public SpanWeight createWeight(IndexSearcher searcher, boolean needsScores)
      throws IOException {
<span class="fc" id="L123">    SpanWeight subWeight = clause.createWeight(searcher, false);</span>
<span class="fc bfc" id="L124" title="All 2 branches covered.">    return new SpanUniquePositionWeight(subWeight, searcher,</span>
<span class="fc" id="L125">        needsScores ? getTermContexts(subWeight) : null);</span>
  }

  /**
   * The Class SpanUniquePositionWeight.
   */
  public class SpanUniquePositionWeight extends SpanWeight {

    /** The sub weight. */
    final SpanWeight subWeight;

    /**
     * Instantiates a new span unique position weight.
     *
     * @param subWeight
     *          the sub weight
     * @param searcher
     *          the searcher
     * @param terms
     *          the terms
     * @throws IOException
     *           Signals that an I/O exception has occurred.
     */
    public SpanUniquePositionWeight(SpanWeight subWeight,
        IndexSearcher searcher, Map&lt;Term, TermContext&gt; terms)
<span class="fc" id="L150">        throws IOException {</span>
<span class="fc" id="L151">      super(MtasSpanUniquePositionQuery.this, searcher, terms);</span>
<span class="fc" id="L152">      this.subWeight = subWeight;</span>
<span class="fc" id="L153">    }</span>

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.apache.lucene.search.spans.SpanWeight#extractTermContexts(java.util.
     * Map)
     */
    @Override
    public void extractTermContexts(Map&lt;Term, TermContext&gt; contexts) {
<span class="nc" id="L164">      subWeight.extractTermContexts(contexts);</span>
<span class="nc" id="L165">    }</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(LeafReaderContext context, Postings requiredPostings)
        throws IOException {
<span class="fc" id="L178">      Spans subSpan = subWeight.getSpans(context, requiredPostings);</span>
<span class="fc bfc" id="L179" title="All 2 branches covered.">      if (subSpan == null) {</span>
<span class="fc" id="L180">        return null;</span>
      } else {
<span class="fc" id="L182">        return new MtasSpanUniquePosition(subSpan);</span>
      }
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.apache.lucene.search.Weight#extractTerms(java.util.Set)
     */
    @Override
    public void extractTerms(Set&lt;Term&gt; terms) {
<span class="nc" id="L193">      subWeight.extractTerms(terms);</span>
<span class="nc" id="L194">    }</span>

  }

}
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