Histogram snippets is working

Author: glorieux-f

common/src/java/com/github/oeuvres/alix/lucene/output/DocSpanHighlighter.java

@@ -23,7 +23,6 @@
 import org.apache.lucene.search.ScoreMode;
 
 import com.github.oeuvres.alix.lucene.spans.SpanMatch;
-import com.github.oeuvres.alix.lucene.spans.SpanWalkerDeprecated;
 import com.github.oeuvres.alix.util.IntIntMap;
 
 /**

common/src/java/com/github/oeuvres/alix/lucene/output/HtmlResults.java

@@ -8,6 +8,7 @@
 import org.apache.lucene.index.StoredFields;
 
 import com.github.oeuvres.alix.lucene.spans.SpanMatch;
+import com.github.oeuvres.alix.lucene.spans.SpanWalker.SnippetsConsumer;
 import com.github.oeuvres.alix.lucene.spans.SpanListener;
 import com.github.oeuvres.alix.util.Detagger;
 import com.github.oeuvres.alix.util.Markup;
@@ -29,7 +30,7 @@
  * ({@link #lastDocId} + 1). The caller is responsible for turning that into a
  * full URL.</p>
  */
-public class HtmlResults implements SpanListener
+public class HtmlResults implements SnippetsConsumer
 {
     private final Writer writer;
     private final StoredFields storedFields;

common/src/java/com/github/oeuvres/alix/lucene/spans/HistoListener.java

@@ -0,0 +1,36 @@
+package com.github.oeuvres.alix.lucene.spans;
+
+import java.io.IOException;
+import java.util.Objects;
+
+import com.github.oeuvres.alix.lucene.output.HistoNum;
+import com.github.oeuvres.alix.lucene.output.HistoNum.Col;
+import com.github.oeuvres.alix.lucene.spans.SpanWalker.SnippetsConsumer;
+
+public class HistoSnippets implements SnippetsConsumer
+{
+    private final HistoNum histo;
+    
+    /**
+     * Accumulates snippets counts into {@link NumHisto#SNIPPETS} of the given histogram.
+     */
+    public HistoSnippets(final HistoNum histo)
+    {
+        this.histo = Objects.requireNonNull(histo);
+        histo.valueSnippets = new int[histo.length()];
+        histo.valueDocs = new int[histo.length()];
+        histo.cols().add(Col.SNIPPETS);
+        histo.cols().add(Col.DOCS);
+    }
+    
+	@Override
+	public void docSnippets(int docId, Snippets snippets) throws IOException {
+        final int histoIndex = histo.index(docId, -1);
+        if (histoIndex < 0) return;
+        final int snippetsCount = snippets.snips4doc();
+        if (snippetsCount <= 0) return;
+        histo.valueSnippets[histoIndex] += snippetsCount;
+        histo.valueDocs[histoIndex]++;
+	}
+   
+}