1 files changed, 58 insertions, 0 deletions
diff --git a/document/src/main/java/com/yahoo/document/select/rule/VariableNode.java b/document/src/main/java/com/yahoo/document/select/rule/VariableNode.java
new file mode 100644
index 00000000000..77c462674db
--- /dev/null
+++ b/document/src/main/java/com/yahoo/document/select/rule/VariableNode.java
@@ -0,0 +1,58 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.document.select.rule;
+
+import com.yahoo.document.BucketIdFactory;
+import com.yahoo.document.select.BucketSet;
+import com.yahoo.document.select.Context;
+import com.yahoo.document.select.OrderingSpecification;
+import com.yahoo.document.select.Visitor;
+
+/**
+ * @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen</a>
+ */
+public class VariableNode implements ExpressionNode {
+
+    private String value;
+
+    public VariableNode(String value) {
+        this.value = value;
+    }
+
+    public Object getValue() {
+        return value;
+    }
+
+    public VariableNode setValue(String value) {
+        this.value = value;
+        return this;
+    }
+
+    @Override
+    public BucketSet getBucketSet(BucketIdFactory factory) {
+        return null;
+    }
+
+    @Override
+    public Object evaluate(Context context) {
+        Object o = context.getVariables().get(value);
+        if (o == null) {
+            throw new IllegalArgumentException("Variable " + value + " was not set in the variable list");
+        }
+        return o;
+    }
+
+    @Override
+    public void accept(Visitor visitor) {
+        visitor.visit(this);
+    }
+
+    @Override
+    public String toString() {
+        return "$" + value;
+    }
+
+    @Override
+    public OrderingSpecification getOrdering(int order) {
+        return null;
+    }
+}