--- /dev/null
+/**
+ * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.northbound.commons.query;
+
+/*package*/ class CompareExpression implements Expression {
+
+ public static enum OP { RE, EQ, NE, GT, GE, LT, LE };
+
+ private final OP _operation;
+ private final String _selector;
+ private final String _arg;
+
+ public CompareExpression(OP op, String selector, String arg) {
+ _operation = op;
+ _selector = selector;
+ _arg = unQuote(arg);
+ }
+
+
+ public OP getOperator() {
+ return _operation;
+ }
+
+ public String getSelector() {
+ return _selector;
+ }
+
+ public String getArgument() {
+ return _arg;
+ }
+
+ @Override
+ public boolean accept(Visitor visitor) throws QueryException {
+ return visitor.visit(this);
+ }
+
+ @Override
+ public String toString() {
+ return "[" + _selector + " " + _operation + " " + _arg + "]";
+ }
+
+ private static String unQuote(String s) {
+ if (s.startsWith("\"") && s.endsWith("\"")) {
+ s = s.substring(1, s.length()-1);
+ } else if (s.startsWith("\'") && s.endsWith("\'")) {
+ s = s.substring(1, s.length()-1);
+ }
+ return s;
+ }
+
+}