1 files changed, 79 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/prelude/semantics/rule/LiteralPhraseProduction.java b/container-search/src/main/java/com/yahoo/prelude/semantics/rule/LiteralPhraseProduction.java
new file mode 100644
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+++ b/container-search/src/main/java/com/yahoo/prelude/semantics/rule/LiteralPhraseProduction.java
@@ -0,0 +1,79 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.prelude.semantics.rule;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+
+import com.yahoo.prelude.query.PhraseItem;
+import com.yahoo.prelude.query.WordItem;
+import com.yahoo.prelude.semantics.engine.Match;
+import com.yahoo.prelude.semantics.engine.RuleEvaluation;
+import com.yahoo.protect.Validator;
+
+/**
+ * A literal phrase produced by a production rule
+ *
+ * @author <a href="mailto:bratseth@yahoo-inc.com">Jon Bratseth</a>
+ */
+public class LiteralPhraseProduction extends TermProduction {
+
+    private List<String> terms=new ArrayList<>();
+
+    /** Creates a new produced literal phrase */
+    public LiteralPhraseProduction() {
+        super();
+    }
+
+    /**
+     * Creates a new produced literal phrase
+     *
+     * @param label the label of the produced term
+     */
+    public LiteralPhraseProduction(String label) {
+        super(label);
+    }
+
+    /** Adds a term to this phrase */
+    public void addTerm(String term) {
+        Validator.ensureNotNull("A term in a produced phrase",term);
+        terms.add(term);
+    }
+
+    /** Returns a read only view of the terms produced by this, never null */
+    public List<String> getTerms() { return Collections.unmodifiableList(terms); }
+
+    public void produce(RuleEvaluation e,int offset) {
+        PhraseItem newPhrase=new PhraseItem();
+        newPhrase.setIndexName(getLabel());
+        for (String term : terms)
+            newPhrase.addItem(new WordItem(term));
+
+        if (replacing) {
+            Match matched=e.getNonreferencedMatch(0);
+            insertMatch(e,matched,newPhrase,offset);
+        }
+        else {
+            newPhrase.setWeight(getWeight());
+            if (e.getTraceLevel()>=6)
+                e.trace(6,"Adding '" + newPhrase + "'");
+            e.addItem(newPhrase,getTermType());
+        }
+    }
+
+    public String toInnerTermString() {
+        return getLabelString() + "\"" + getSpaceSeparated(terms) + "\"";
+    }
+
+    private String getSpaceSeparated(List<String> terms) {
+        StringBuilder builder=new StringBuilder();
+        for (Iterator<String> i=terms.iterator(); i.hasNext(); ) {
+            builder.append(i.next());
+            if (i.hasNext())
+                builder.append(" ");
+        }
+        return builder.toString();
+    }
+
+}