Introducing Spring Framework

Chapter 4 ■ Using Beans Scopes
@Autowired
private DocumentDAO documentDAO;
public AnnotatedSearchEngine(){
if(log.isDebugEnabled())
log.debug("AnnotatedSearchEngine created: " + this);
}
public List findByType(Type documentType) {
List result = new ArrayList();
for(Document doc : listAll()){
if(doc.getType().getName().equals(documentType.getName()))
result.add(doc);
}
return result;
}
}
public List listAll() {
return Arrays.asList(documentDAO.getAll());
}
Listing 4-4 shows the @Scope annotation that is placed over your class with a “prototype” value. Also, you can see
the use of the Logger.
Listing 4-5 shows a Java configuration class and the use of the @Scope annotation. All these configurations are
similar whether you use XML, annotation, or the Java configuration class.
Listing 4-5. MyDocumentsContext.java
package com.apress.isf.spring.config;
import java.util.HashMap;
import java.util.Map;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;
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;
import com.apress.isf.spring.data.DocumentRepository;
import com.apress.isf.spring.service.ServiceSearchEngine;
@Configuration
public class MyDocumentsContext {
private static final Logger log =
LoggerFactory.getLogger(MyDocumentsContext.class);
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private Map documents = new HashMap();
private Map types = new HashMap();