-/**
- * 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;
-
-import java.util.Stack;
-
-/*package*/ class ExpressionBuilder {
- private final Stack<Expression> _stack = new Stack<Expression>();
- private LogicalExpression.OP _lastOp = null;
-
- public ExpressionBuilder() {}
-
- public ExpressionBuilder withAnd() {
- _lastOp = LogicalExpression.OP.AND;
- return this;
- }
-
- public ExpressionBuilder withOr() {
- _lastOp = LogicalExpression.OP.OR;
- return this;
- }
-
- public ExpressionBuilder withTerm(Expression exp) {
- if (_lastOp != null) {
- exp = new LogicalExpression(_lastOp, _stack.pop(), exp);
- _lastOp = null;
- }
- _stack.push(exp);
- return this;
- }
-
- public Expression build() {
- return _stack.pop();
- }
-
-}