1 files changed, 27 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/search/pagetemplates/SourceVisitor.java b/container-search/src/main/java/com/yahoo/search/pagetemplates/SourceVisitor.java
new file mode 100644
index 00000000000..bf2685da56f
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+++ b/container-search/src/main/java/com/yahoo/search/pagetemplates/SourceVisitor.java
@@ -0,0 +1,27 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.search.pagetemplates;
+
+import com.yahoo.search.pagetemplates.model.PageTemplateVisitor;
+import com.yahoo.search.pagetemplates.model.Source;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Visits a page template object structure and records the sources mentioned.
+ *
+ * @author <a href="mailto:bratseth@yahoo-inc.com">Jon Bratseth</a>
+ */
+class SourceVisitor extends PageTemplateVisitor {
+
+    private Set<Source> sources=new HashSet<>();
+
+    @Override
+    public void visit(Source source) {
+        sources.add(source);
+    }
+
+    /** Returns the live list of sources collected by this during visiting */
+    public Set<Source> getSources() { return sources; }
+
+}