Fixed #193

core/api/src/main/java/com/blazebit/persistence/Executable.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2015 Blazebit.
+ *
+ * Licensed 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 com.blazebit.persistence;
+
+import javax.persistence.Query;
+import javax.persistence.Tuple;
+
+/**
+ * A base interface for executable query builders.
+ *
+ * @author Christian Beikov
+ * @since 1.2.0
+ */
+public interface Executable {
+
+    /**
+     * Returns the query string for the built query.
+     *
+     * @return The query string
+     */
+    public String getQueryString();
+
+    /**
+     * Returns the JPA query for the built query.
+     * The returned query is already parameterized with all known parameters.
+     *
+     * @return The typed query for the built query
+     */
+    public Query getQuery();
+
+    /**
+     * Execute this modification statement and return the number of affected entities.
+     * 
+     * @return The number of affected entities
+     */
+    public int executeUpdate();
+}