Introducing Spring Framework

Chapter 3 ■ Applying Different Configurations
In Listing 3-7, in your setup() method (this method will run before each method in this class gets executed), you
are using the ClassPathXmlApplicationContext class that will run your Spring container by creating and wiring up
all the instances and having them ready when you need them.
Now let’s run the unit test (see Listing 3-7) with the following command:
gradle test
Or if you are on the project’s base path, you can run it with
gradle :ch03:test
■ ■Note Every chapter will contain several unit test files, so the following command will run a specific test:
gradle –Dtest.single=MyDocumentsTest test
So far you have seen how to configure the Spring container by adding beans and referencing them so the
container knows about the creation and relationship, and gets them ready when you need them. Also, remember that
the Spring Framework allows you to have different configurations apart from the XML, so in the next section you are
going to see how to use annotations to accomplish the same configuration.
Using Spring Annotations
Java annotations were introduced in Java 5, and they added a great value to the Java language because you can add
metadata to a class that can be used at compile time and at runtime, making new ways to develop. The Spring team
took advantage of this new feature to provide a Spring annotation-based configuration. This feature was introduced in
version 2.5.
But enough talk, let’s go to the code and see what you are going to change in order to use the Spring annotation
configuration. See Listing 3-8.
Listing 3-8. AnnotatedSearchEngine.java
package com.apress.isf.spring.annotated.service;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.apress.isf.java.model.Document;
import com.apress.isf.java.model.Type;
import com.apress.isf.java.service.SearchEngine;
import com.apress.isf.spring.data.DocumentDAO;
@Service("engine")
public class AnnotatedSearchEngine implements SearchEngine {
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