1 files changed, 60 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/prelude/query/parser/PhraseParser.java b/container-search/src/main/java/com/yahoo/prelude/query/parser/PhraseParser.java
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index 00000000000..ba10b7b6ee1
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+++ b/container-search/src/main/java/com/yahoo/prelude/query/parser/PhraseParser.java
@@ -0,0 +1,60 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.prelude.query.parser;
+
+import com.yahoo.prelude.query.Item;
+import com.yahoo.prelude.query.PhraseItem;
+import com.yahoo.search.query.parser.ParserEnvironment;
+
+/**
+ * Parser for queries of type phrase.
+ *
+ * @author  <a href="mailto:steinar@yahoo-inc.com">Steinar Knutsen</a>
+ */
+public class PhraseParser extends AbstractParser {
+
+    public PhraseParser(ParserEnvironment environment) {
+        super(environment);
+    }
+
+    protected Item parseItems() {
+        return forcedPhrase();
+    }
+
+    /**
+     * Ignores everything but words and numbers
+     *
+     * @return a phrase item if several words/numbers was found,
+     *         a word item if only one was found
+     */
+    private Item forcedPhrase() {
+        Item firstWord = null;
+        PhraseItem phrase = null;
+
+        while (tokens.hasNext()) {
+            Token token = tokens.next();
+
+            if (token.kind != Token.Kind.WORD && token.kind != Token.Kind.NUMBER) {
+                continue;
+            }
+            // Note, this depends on segment never creating AndItems when quoted
+            // (the second argument) is true.
+            Item newWord = segment(token);
+
+            if (firstWord == null) { // First pass
+                firstWord = newWord;
+            } else if (phrase == null) { // Second pass
+                phrase = new PhraseItem();
+                phrase.addItem(firstWord);
+                phrase.addItem(newWord);
+            } else { // Following passes
+                phrase.addItem(newWord);
+            }
+        }
+        if (phrase != null) {
+            return phrase;
+        } else {
+            return firstWord;
+        }
+    }
+
+}