Polish ConditionalOn annotations

Update ConditionalOn annotations :
- Use consistent attribute names for OnClass and OnMissingClass
- Update javadoc
- Rename tests to reflect the annotation rather than the interface

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/ConditionalOnClass.java

@@ -44,8 +44,7 @@ public @interface ConditionalOnClass {
 	public Class<?>[] value() default {};
 
 	/**
-	 * The classes names that must be present. When possible {@link #value()} should be
-	 * used in preference to this property.
+	 * The classes names that must be present.
 	 * @return the class names that must be present.
 	 */
 	public String[] name() default {};

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/ConditionalOnExpression.java

@@ -35,7 +35,8 @@ import org.springframework.context.annotation.Conditional;
 public @interface ConditionalOnExpression {
 
 	/**
-	 * The SpEL expression.
+	 * The SpEL expression to evaluate. Expression should return {@code true} if the
+	 * condition passes or {@code false} if it fails.
 	 */
 	String value() default "true";
 }

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/ConditionalOnMissingClass.java

@@ -25,7 +25,8 @@ import java.lang.annotation.Target;
 import org.springframework.context.annotation.Conditional;
 
 /**
- * {@link Conditional} that only matches when the specified classes are on the classpath.
+ * {@link Conditional} that only matches when the specified classes are not on the
+ * classpath.
  * 
  * @author Dave Syer
  */
@@ -36,8 +37,17 @@ import org.springframework.context.annotation.Conditional;
 public @interface ConditionalOnMissingClass {
 
 	/**
-	 * The classes names that must be absent.
-	 * @return the class names that must be absent.
+	 * The classes that must not be present. Since this annotation parsed by loading class
+	 * bytecode it is safe to specify classes here that may ultimately not be on the
+	 * classpath.
+	 * @return the classes that must be present
 	 */
-	public String[] value() default {};
+	public Class<?>[] value() default {};
+
+	/**
+	 * The classes names that must not be present.
+	 * @return the class names that must be present.
+	 */
+	public String[] name() default {};
+
 }

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/OnBeanConditionTests.java → spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnBeanTests.java

@@ -33,7 +33,7 @@ import static org.junit.Assert.assertTrue;
  * @author Dave Syer
  */
 @Ignore
-public class OnBeanConditionTests {
+public class ConditionalOnBeanTests {
 
 	private AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
 

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/OnClassConditionTests.java → spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnClassTests.java

@@ -17,8 +17,6 @@
 package org.springframework.boot.autoconfigure.condition;
 
 import org.junit.Test;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
-import org.springframework.boot.autoconfigure.condition.OnClassCondition;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -30,11 +28,11 @@ import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
 /**
- * Tests for {@link OnClassCondition}.
+ * Tests for {@link ConditionalOnClass}.
  * 
  * @author Dave Syer
  */
-public class OnClassConditionTests {
+public class ConditionalOnClassTests {
 
 	private AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
 
@@ -71,7 +69,7 @@ public class OnClassConditionTests {
 	}
 
 	@Configuration
-	@ConditionalOnClass(OnClassConditionTests.class)
+	@ConditionalOnClass(ConditionalOnClassTests.class)
 	protected static class BasicConfiguration {
 		@Bean
 		public String bar() {

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/OnExpressionConditionTests.java → spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnExpressionTests.java

@@ -17,8 +17,6 @@
 package org.springframework.boot.autoconfigure.condition;
 
 import org.junit.Test;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
-import org.springframework.boot.autoconfigure.condition.OnExpressionCondition;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -28,11 +26,11 @@ import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
 /**
- * Tests for {@link OnExpressionCondition}.
+ * Tests for {@link ConditionalOnExpression}.
  * 
  * @author Dave Syer
  */
-public class OnExpressionConditionTests {
+public class ConditionalOnExpressionTests {
 
 	private AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
 

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/OnMissingBeanConditionTests.java → spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnMissingBeanTests.java

@@ -34,7 +34,7 @@ import static org.junit.Assert.assertTrue;
  * @author Phillip Webb
  */
 @SuppressWarnings("resource")
-public class OnMissingBeanConditionTests {
+public class ConditionalOnMissingBeanTests {
 
 	private AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
 

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/OnMissingClassConditionTests.java → spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnMissingClassTests.java

@@ -30,7 +30,7 @@ import static org.junit.Assert.assertTrue;
  * 
  * @author Dave Syer
  */
-public class OnMissingClassConditionTests {
+public class ConditionalOnMissingClassTests {
 
 	private AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
 
@@ -51,7 +51,7 @@ public class OnMissingClassConditionTests {
 	}
 
 	@Configuration
-	@ConditionalOnMissingClass("org.springframework.boot.autoconfigure.condition.OnMissingClassConditionTests")
+	@ConditionalOnMissingClass(ConditionalOnMissingClassTests.class)
 	protected static class BasicConfiguration {
 		@Bean
 		public String bar() {
@@ -60,7 +60,7 @@ public class OnMissingClassConditionTests {
 	}
 
 	@Configuration
-	@ConditionalOnMissingClass("FOO")
+	@ConditionalOnMissingClass(name = "FOO")
 	protected static class MissingConfiguration {
 		@Bean
 		public String bar() {

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/OnNotWebApplicationConditionTests.java → spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnNotWebApplicationTests.java

@@ -30,7 +30,7 @@ import static org.junit.Assert.assertTrue;
  * 
  * @author Dave Syer
  */
-public class OnNotWebApplicationConditionTests {
+public class ConditionalOnNotWebApplicationTests {
 
 	private AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
 

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/OnResourceConditionTests.java → spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnResourceTests.java

@@ -17,8 +17,6 @@
 package org.springframework.boot.autoconfigure.condition;
 
 import org.junit.Test;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnResource;
-import org.springframework.boot.autoconfigure.condition.OnResourceCondition;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -28,11 +26,11 @@ import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
 /**
- * Tests for {@link OnResourceCondition}.
+ * Tests for {@link ConditionalOnResource}.
  * 
  * @author Dave Syer
  */
-public class OnResourceConditionTests {
+public class ConditionalOnResourceTests {
 
 	private AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
 

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/OnWebApplicationConditionTests.java → spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnWebApplicationTests.java

@@ -17,9 +17,6 @@
 package org.springframework.boot.autoconfigure.condition;
 
 import org.junit.Test;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnNotWebApplication;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
-import org.springframework.boot.autoconfigure.condition.OnWebApplicationCondition;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.mock.web.MockServletContext;
@@ -30,11 +27,11 @@ import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
 /**
- * Tests for {@link OnWebApplicationCondition}.
+ * Tests for {@link ConditionalOnWebApplication}.
  * 
  * @author Dave Syer
  */
-public class OnWebApplicationConditionTests {
+public class ConditionalOnWebApplicationTests {
 
 	private AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();