adding beginnings of some common abstractions

src/main/java/org/springframework/data/core/DataMapper.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2010 the original author or authors.
+ *
+ * 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 org.springframework.data.core;
+
+/**
+ * Class used to map data to a business object.
+ *
+ * @author Thomas Risberg
+ * @since 1.0
+ */
+public interface DataMapper<S, T> {
+	
+	T map(S source);
+
+}

src/main/java/org/springframework/data/core/DataValueSource.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2010 the original author or authors.
+ *
+ * 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 org.springframework.data.core;
+
+/**
+ * Class used to map a business object to an object providing the data value.
+ *
+ * @author Thomas Risberg
+ * @since 1.0
+ */
+public interface DataValueSource<S, T> {
+	
+	T getValue(S source);
+
+}

src/main/java/org/springframework/data/core/QueryDefinition.java

@@ -0,0 +1,5 @@
+package org.springframework.data.core;
+
+public interface QueryDefinition {
+
+}

src/main/java/org/springframework/data/serialization/SerializationStore.java

@@ -1,13 +0,0 @@
-package org.springframework.data.serialization;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-
-import java.lang.annotation.Retention;
-
-@Retention(RetentionPolicy.RUNTIME)
-@Target(ElementType.TYPE)
-public @interface SerializationStore {
-
-}