Improve code structure, javadoc, and build configuration

This commit makes extensive changes to the structure of the code. It
introduces a number of separate packages to provide better separation
of the various areas of functionality. Alongside this change the project
has been renamed from spring-restdocs-core to spring-restdocs.

The build has been improved to provide support for building the samples
from the main build using the buildSamples task. While this change has
been made, the samples remain standalone projects so that their
configuration is not dependent on the main project’s build. Running
buildSamples will build the samples using both Maven and Gradle.

All of the main project’s classes now have javadoc and licence/copyright
headers.

samples/rest-notes-spring-data-rest/src/main/java/com/example/notes/Note.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2014 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 com.example.notes;
+
+import java.util.List;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.ManyToMany;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
+@Entity
+public class Note {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.AUTO)
+	private long id;
+
+	private String title;
+
+	private String body;
+
+	@ManyToMany
+	private List<Tag> tags;
+
+	@JsonIgnore
+	public long getId() {
+		return id;
+	}
+
+	public void setId(long id) {
+		this.id = id;
+	}
+
+	public String getTitle() {
+		return title;
+	}
+
+	public void setTitle(String title) {
+		this.title = title;
+	}
+
+	public String getBody() {
+		return body;
+	}
+
+	public void setBody(String body) {
+		this.body = body;
+	}
+
+	public List<Tag> getTags() {
+		return tags;
+	}
+
+	public void setTags(List<Tag> tags) {
+		this.tags = tags;
+	}
+}

samples/rest-notes-spring-data-rest/src/main/java/com/example/notes/NoteRepository.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2014 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 com.example.notes;
+
+import org.springframework.data.repository.CrudRepository;
+
+public interface NoteRepository extends CrudRepository<Note, Long> {
+
+}

samples/rest-notes-spring-data-rest/src/main/java/com/example/notes/RestNotesSpringDataRest.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2014-2015 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 com.example.notes;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+@EnableAutoConfiguration
+@ComponentScan
+@EnableJpaRepositories
+public class RestNotesSpringDataRest {
+
+	public static void main(String[] args) {
+		SpringApplication.run(RestNotesSpringDataRest.class, args);
+	}
+
+}

samples/rest-notes-spring-data-rest/src/main/java/com/example/notes/Tag.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2014 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 com.example.notes;
+
+import java.util.List;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.ManyToMany;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
+@Entity
+public class Tag {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.AUTO)
+	private long id;
+
+	private String name;
+
+	@ManyToMany(mappedBy = "tags")
+	private List<Note> notes;
+
+	@JsonIgnore
+	public long getId() {
+		return id;
+	}
+
+	public void setId(long id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public List<Note> getNotes() {
+		return notes;
+	}
+
+	public void setNotes(List<Note> notes) {
+		this.notes = notes;
+	}
+}

samples/rest-notes-spring-data-rest/src/main/java/com/example/notes/TagRepository.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2014 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 com.example.notes;
+
+import org.springframework.data.repository.CrudRepository;
+
+public interface TagRepository extends CrudRepository<Tag, Long> {
+
+}