From bf1b35aac29b6c0d5e918f00d99a0632e4925b51 Mon Sep 17 00:00:00 2001
From: Florian Zschocke <florian.zschocke@devolo.de>
Date: Sun, 26 Feb 2017 18:44:02 +0100
Subject: Add DocValues to support sorting of ticket index fields.

In order to support sorting, Lucene 5 needs DocValue fields in an index.
So in order to make the ticket index work, i.e. show any tickets on the
tickets page, the ticket index needs to be changed, adding a DocValues
field.

The DocValuesFields are implemented for the current index, which does not
use multiple values for a field. Should at any time in the future an
existing numeric field get multiple values stored in a document, then
the index needs to know that and use SortedNumeric DocValues and SortFields
instead.
---
 src/main/java/com/gitblit/tickets/TicketIndexer.java | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/main/java')

diff --git a/src/main/java/com/gitblit/tickets/TicketIndexer.java b/src/main/java/com/gitblit/tickets/TicketIndexer.java
index b765cc66..8aab74ba 100644
--- a/src/main/java/com/gitblit/tickets/TicketIndexer.java
+++ b/src/main/java/com/gitblit/tickets/TicketIndexer.java
@@ -31,6 +31,8 @@ import org.apache.lucene.document.Document;
 import org.apache.lucene.document.Field.Store;
 import org.apache.lucene.document.IntField;
 import org.apache.lucene.document.LongField;
+import org.apache.lucene.document.NumericDocValuesField;
+import org.apache.lucene.document.SortedDocValuesField;
 import org.apache.lucene.document.TextField;
 import org.apache.lucene.index.DirectoryReader;
 import org.apache.lucene.index.IndexWriter;
@@ -49,6 +51,7 @@ import org.apache.lucene.search.TopFieldDocs;
 import org.apache.lucene.search.TopScoreDocCollector;
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.store.FSDirectory;
+import org.apache.lucene.util.BytesRef;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -549,14 +552,17 @@ public class TicketIndexer {
 			return;
 		}
 		doc.add(new LongField(lucene.name(), value.getTime(), Store.YES));
+		doc.add(new NumericDocValuesField(lucene.name(), value.getTime()));
 	}
 
 	private void toDocField(Document doc, Lucene lucene, long value) {
 		doc.add(new LongField(lucene.name(), value, Store.YES));
+		doc.add(new NumericDocValuesField(lucene.name(), value));
 	}
 
 	private void toDocField(Document doc, Lucene lucene, int value) {
 		doc.add(new IntField(lucene.name(), value, Store.YES));
+		doc.add(new NumericDocValuesField(lucene.name(), value));
 	}
 
 	private void toDocField(Document doc, Lucene lucene, String value) {
@@ -564,6 +570,7 @@ public class TicketIndexer {
 			return;
 		}
 		doc.add(new org.apache.lucene.document.Field(lucene.name(), value, TextField.TYPE_STORED));
+		doc.add(new SortedDocValuesField(lucene.name(), new BytesRef(value)));
 	}
 
 	/**
-- 
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