svn commit: r1736401 - /db/jdo/trunk/api/src/java/javax/jdo/query/OptionalExpression.java

[an...@apache.org]

Author: andyj
Date: Thu Mar 24 07:42:07 2016
New Revision: 1736401

URL: http://svn.apache.org/viewvc?rev=1736401&view=rev
Log:
Add OptionalExpression to allow get and isPresent methods in JDOQLTypedQuery

Added:
    db/jdo/trunk/api/src/java/javax/jdo/query/OptionalExpression.java

Added: db/jdo/trunk/api/src/java/javax/jdo/query/OptionalExpression.java
URL: http://svn.apache.org/viewvc/db/jdo/trunk/api/src/java/javax/jdo/query/OptionalExpression.java?rev=1736401&view=auto
==============================================================================
--- db/jdo/trunk/api/src/java/javax/jdo/query/OptionalExpression.java (added)
+++ db/jdo/trunk/api/src/java/javax/jdo/query/OptionalExpression.java Thu Mar 24 07:42:07 2016
@@ -0,0 +1,35 @@
+/*
+ * 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 javax.jdo.query;
+
+/**
+ * Representation of an Optional type in a query.
+ */
+public interface OptionalExpression<T> extends ComparableExpression<java.util.Optional<T>>
+{
+    /**
+     * Accessor for the object within the Optional.
+     * @return Expression for the object
+     */
+    Expression<T> get();
+
+    /**
+     * Accessor for whether there is an object within the Optional.
+     * @return Whether there is an expression
+     */
+    BooleanExpression isPresent();
+}
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