DATACMNS-1106 - Removed deprecations in ProjectionFactory.

Removed the deprecated implementation of ResourceLoaderAware in favor of BeanClassLoaderAware. Removed deprecated ProjectionFactory.getInputProperties() in favor of ….getProjectionInformation(). Removed the Java conditional to add a MethodInterceptor for default methods. Adapted test cases.

src/main/java/org/springframework/data/projection/ProjectionFactory.java

@@ -15,8 +15,6 @@
  */
 package org.springframework.data.projection;
 
-import java.util.List;
-
 /**
  * A factory to create projecting instances for other objects usually used to allow easy creation of representation
  * projections to define which properties of a domain objects shall be exported in which way.
@@ -44,16 +42,6 @@ public interface ProjectionFactory {
 	 */
 	<T> T createProjection(Class<T> projectionType);
 
-	/**
-	 * Returns the properties that will be consumed by the given projection type.
-	 * 
-	 * @param projectionType must not be {@literal null}.
-	 * @return
-	 * @deprecated use {@link #getProjectionInformation(Class)}
-	 */
-	@Deprecated
-	List<String> getInputProperties(Class<?> projectionType);
-
 	/**
 	 * Returns the {@link ProjectionInformation} for the given projection type.
 	 * 

src/main/java/org/springframework/data/projection/ProxyProjectionFactory.java

@@ -15,7 +15,6 @@
  */
 package org.springframework.data.projection;
 
-import java.beans.PropertyDescriptor;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -27,10 +26,8 @@ import org.aopalliance.intercept.MethodInvocation;
 import org.springframework.aop.framework.Advised;
 import org.springframework.aop.framework.ProxyFactory;
 import org.springframework.beans.factory.BeanClassLoaderAware;
-import org.springframework.context.ResourceLoaderAware;
 import org.springframework.core.convert.ConversionService;
 import org.springframework.core.convert.support.DefaultConversionService;
-import org.springframework.core.io.ResourceLoader;
 import org.springframework.util.Assert;
 import org.springframework.util.ClassUtils;
 
@@ -45,10 +42,7 @@ import org.springframework.util.ClassUtils;
  * @see SpelAwareProxyProjectionFactory
  * @since 1.10
  */
-class ProxyProjectionFactory implements ProjectionFactory, ResourceLoaderAware, BeanClassLoaderAware {
-
-	private static final boolean IS_JAVA_8 = org.springframework.util.ClassUtils.isPresent("java.util.Optional",
-			ProxyProjectionFactory.class.getClassLoader());
+class ProxyProjectionFactory implements ProjectionFactory, BeanClassLoaderAware {
 
 	private final List<MethodInterceptorFactory> factories;
 	private final ConversionService conversionService;
@@ -66,16 +60,6 @@ class ProxyProjectionFactory implements ProjectionFactory, ResourceLoaderAware,
 		this.conversionService = new DefaultConversionService();
 	}
 
-	/**
-	 * @see org.springframework.context.ResourceLoaderAware#setResourceLoader(org.springframework.core.io.ResourceLoader)
-	 * @deprecated rather set the {@link ClassLoader} directly via {@link #setBeanClassLoader(ClassLoader)}.
-	 */
-	@Override
-	@Deprecated
-	public void setResourceLoader(ResourceLoader resourceLoader) {
-		this.classLoader = resourceLoader.getClassLoader();
-	}
-
 	/* 
 	 * (non-Javadoc)
 	 * @see org.springframework.beans.factory.BeanClassLoaderAware#setBeanClassLoader(java.lang.ClassLoader)
@@ -119,10 +103,7 @@ class ProxyProjectionFactory implements ProjectionFactory, ResourceLoaderAware,
 		factory.setOpaque(true);
 		factory.setInterfaces(projectionType, TargetAware.class);
 
-		if (IS_JAVA_8) {
-			factory.addAdvice(new DefaultMethodInvokingMethodInterceptor());
-		}
-
+		factory.addAdvice(new DefaultMethodInvokingMethodInterceptor());
 		factory.addAdvice(new TargetAwareMethodInterceptor(source.getClass()));
 		factory.addAdvice(getMethodInterceptor(source, projectionType));
 
@@ -141,24 +122,6 @@ class ProxyProjectionFactory implements ProjectionFactory, ResourceLoaderAware,
 		return createProjection(projectionType, new HashMap<String, Object>());
 	}
 
-	/* 
-	 * (non-Javadoc)
-	 * @see org.springframework.data.projection.ProjectionFactory#getProperties(java.lang.Class)
-	 */
-	@Override
-	public List<String> getInputProperties(Class<?> projectionType) {
-
-		Assert.notNull(projectionType, "Projection type must not be null!");
-
-		List<String> result = new ArrayList<>();
-
-		for (PropertyDescriptor descriptor : getProjectionInformation(projectionType).getInputProperties()) {
-			result.add(descriptor.getName());
-		}
-
-		return result;
-	}
-
 	/* 
 	 * (non-Javadoc)
 	 * @see org.springframework.data.projection.ProjectionFactory#getProjectionInformation(java.lang.Class)

src/main/java/org/springframework/data/projection/SpelAwareProxyProjectionFactory.java

@@ -77,7 +77,8 @@ public class SpelAwareProxyProjectionFactory extends ProxyProjectionFactory impl
 		}
 
 		return typeCache.get(projectionType)
-				? new SpelEvaluatingMethodInterceptor(interceptor, source, beanFactory, parser, projectionType) : interceptor;
+				? new SpelEvaluatingMethodInterceptor(interceptor, source, beanFactory, parser, projectionType)
+				: interceptor;
 	}
 
 	/* 

src/main/java/org/springframework/data/web/ProxyingHandlerMethodArgumentResolver.java

@@ -23,11 +23,9 @@ import org.springframework.beans.MutablePropertyValues;
 import org.springframework.beans.factory.BeanClassLoaderAware;
 import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.BeanFactoryAware;
-import org.springframework.context.ResourceLoaderAware;
 import org.springframework.core.MethodParameter;
 import org.springframework.core.annotation.AnnotatedElementUtils;
 import org.springframework.core.convert.ConversionService;
-import org.springframework.core.io.ResourceLoader;
 import org.springframework.data.projection.SpelAwareProxyProjectionFactory;
 import org.springframework.util.ClassUtils;
 import org.springframework.web.bind.WebDataBinder;
@@ -43,7 +41,7 @@ import org.springframework.web.method.support.HandlerMethodArgumentResolver;
  * @since 1.10
  */
 public class ProxyingHandlerMethodArgumentResolver extends ModelAttributeMethodProcessor
-		implements BeanFactoryAware, ResourceLoaderAware, BeanClassLoaderAware {
+		implements BeanFactoryAware, BeanClassLoaderAware {
 
 	private static final List<String> IGNORED_PACKAGES = Arrays.asList("java", "org.springframework");
 
@@ -72,16 +70,6 @@ public class ProxyingHandlerMethodArgumentResolver extends ModelAttributeMethodP
 		this.proxyFactory.setBeanFactory(beanFactory);
 	}
 
-	/**
-	 * @see org.springframework.context.ResourceLoaderAware#setResourceLoader(org.springframework.core.io.ResourceLoader)
-	 * @deprecated rather set the {@link ClassLoader} via {@link #setBeanClassLoader(ClassLoader)}.
-	 */
-	@Override
-	@Deprecated
-	public void setResourceLoader(ResourceLoader resourceLoader) {
-		this.proxyFactory.setResourceLoader(resourceLoader);
-	}
-
 	/* 
 	 * (non-Javadoc)
 	 * @see org.springframework.beans.factory.BeanClassLoaderAware#setBeanClassLoader(java.lang.ClassLoader)
@@ -115,13 +103,9 @@ public class ProxyingHandlerMethodArgumentResolver extends ModelAttributeMethodP
 		}
 
 		// Fallback for only user defined interfaces
-		for (String prefix : IGNORED_PACKAGES) {
-			if (ClassUtils.getPackageName(type).startsWith(prefix)) {
-				return false;
-			}
-		}
+		String packageName = ClassUtils.getPackageName(type);
 
-		return true;
+		return !IGNORED_PACKAGES.stream().anyMatch(it -> packageName.startsWith(it));
 	}
 
 	/* 

src/test/java/org/springframework/data/projection/ProxyProjectionFactoryUnitTests.java

@@ -49,11 +49,6 @@ public class ProxyProjectionFactoryUnitTests {
 		factory.createProjection(null, new Object());
 	}
 
-	@Test(expected = IllegalArgumentException.class) // DATACMNS-630
-	public void rejectsNullProjectionTypeForInputProperties() {
-		factory.getInputProperties(null);
-	}
-
 	@Test // DATACMNS-630
 	public void returnsNullForNullSource() {
 		assertThat(factory.createProjection(CustomerExcerpt.class, null)).isNull();

src/test/java/org/springframework/data/projection/SpelAwareProxyProjectionFactoryUnitTests.java

@@ -17,6 +17,7 @@ package org.springframework.data.projection;
 
 import static org.assertj.core.api.Assertions.*;
 
+import java.beans.PropertyDescriptor;
 import java.util.List;
 
 import org.junit.Before;
@@ -58,9 +59,13 @@ public class SpelAwareProxyProjectionFactoryUnitTests {
 	@Test // DATACMNS-630
 	public void excludesAtValueAnnotatedMethodsForInputProperties() {
 
-		List<String> properties = factory.getInputProperties(CustomerExcerpt.class);
+		List<PropertyDescriptor> properties = factory //
+				.getProjectionInformation(CustomerExcerpt.class) //
+				.getInputProperties();
 
-		assertThat(properties).containsExactly("firstname");
+		assertThat(properties) //
+				.extracting(PropertyDescriptor::getName) //
+				.containsExactly("firstname");
 	}
 
 	@Test // DATACMNS-89