1 files changed, 36 insertions, 0 deletions
diff --git a/qpid/java/common/src/main/java/org/apache/qpid/filter/BooleanExpression.java b/qpid/java/common/src/main/java/org/apache/qpid/filter/BooleanExpression.java
new file mode 100644
index 0000000000..13e1604d5f
--- /dev/null
+++ b/qpid/java/common/src/main/java/org/apache/qpid/filter/BooleanExpression.java
@@ -0,0 +1,36 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.qpid.filter;
+//
+// Based on like named file from r450141 of the Apache ActiveMQ project <http://www.activemq.org/site/home.html>
+//
+
+/**
+ * A BooleanExpression is an expression that always
+ * produces a Boolean result.
+ */
+public interface BooleanExpression extends Expression
+{
+
+    /**
+     * @param message
+     * @return true if the expression evaluates to Boolean.TRUE.
+     */
+    public boolean matches(FilterableMessage message);
+
+}