Remove @ConditionalOnProperty 'relaxed' attribute

Remove the `relaxed` attribute from `@ConditionalOnProperty` and instead
rely on the direct configuration property source relaxed name support.

Closes gh-9003

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

 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -122,10 +122,4 @@ public @interface ConditionalOnProperty {
 	 */
 	boolean matchIfMissing() default false;
 
-	/**
-	 * If relaxed names should be checked. Defaults to {@code true}.
-	 * @return if relaxed names are used
-	 */
-	boolean relaxedNames() default true;
-
 }

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

@@ -23,7 +23,6 @@ import java.util.Map;
 import java.util.Map.Entry;
 
 import org.springframework.boot.autoconfigure.condition.ConditionMessage.Style;
-import org.springframework.boot.bind.RelaxedPropertyResolver;
 import org.springframework.context.annotation.Condition;
 import org.springframework.context.annotation.ConditionContext;
 import org.springframework.core.Ordered;
@@ -121,8 +120,6 @@ class OnPropertyCondition extends SpringBootCondition {
 
 		private final String[] names;
 
-		private final boolean relaxedNames;
-
 		private final boolean matchIfMissing;
 
 		Spec(AnnotationAttributes annotationAttributes) {
@@ -133,7 +130,6 @@ class OnPropertyCondition extends SpringBootCondition {
 			this.prefix = prefix;
 			this.havingValue = annotationAttributes.getString("havingValue");
 			this.names = getNames(annotationAttributes);
-			this.relaxedNames = annotationAttributes.getBoolean("relaxedNames");
 			this.matchIfMissing = annotationAttributes.getBoolean("matchIfMissing");
 		}
 
@@ -149,11 +145,8 @@ class OnPropertyCondition extends SpringBootCondition {
 
 		private void collectProperties(PropertyResolver resolver, List<String> missing,
 				List<String> nonMatching) {
-			if (this.relaxedNames) {
-				resolver = new RelaxedPropertyResolver(resolver, this.prefix);
-			}
 			for (String name : this.names) {
-				String key = (this.relaxedNames ? name : this.prefix + name);
+				String key = this.prefix + name;
 				if (resolver.containsProperty(key)) {
 					if (!isMatch(resolver.getProperty(key), this.havingValue)) {
 						nonMatching.add(name);

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnPropertyTests.java

 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -26,10 +26,14 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 
+import org.springframework.boot.WebApplicationType;
+import org.springframework.boot.builder.SpringApplicationBuilder;
 import org.springframework.boot.test.util.EnvironmentTestUtils;
-import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.env.ConfigurableEnvironment;
+import org.springframework.core.env.StandardEnvironment;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.hamcrest.Matchers.containsString;
@@ -48,7 +52,9 @@ public class ConditionalOnPropertyTests {
 	@Rule
 	public ExpectedException thrown = ExpectedException.none();
 
-	private AnnotationConfigApplicationContext context;
+	private ConfigurableApplicationContext context;
+
+	private ConfigurableEnvironment environment = new StandardEnvironment();
 
 	@After
 	public void tearDown() {
@@ -98,13 +104,6 @@ public class ConditionalOnPropertyTests {
 		assertThat(this.context.containsBean("foo")).isTrue();
 	}
 
-	@Test
-	public void nonRelaxedName() throws Exception {
-		load(NonRelaxedPropertiesRequiredConfiguration.class,
-				"theRelaxedProperty=value1");
-		assertThat(this.context.containsBean("foo")).isFalse();
-	}
-
 	@Test
 	// Enabled by default
 	public void enabledIfNotConfiguredOtherwise() {
@@ -185,18 +184,6 @@ public class ConditionalOnPropertyTests {
 		assertThat(this.context.containsBean("foo")).isTrue();
 	}
 
-	@Test
-	public void strictNameMatch() {
-		load(StrictNameConfig.class, "simple.my-property:bar");
-		assertThat(this.context.containsBean("foo")).isTrue();
-	}
-
-	@Test
-	public void strictNameNoMatch() {
-		load(StrictNameConfig.class, "simple.myProperty:bar");
-		assertThat(this.context.containsBean("foo")).isFalse();
-	}
-
 	@Test
 	public void multiValuesAllSet() {
 		load(MultiValuesConfig.class, "simple.my-property:bar",
@@ -271,10 +258,9 @@ public class ConditionalOnPropertyTests {
 	}
 
 	private void load(Class<?> config, String... environment) {
-		this.context = new AnnotationConfigApplicationContext();
-		EnvironmentTestUtils.addEnvironment(this.context, environment);
-		this.context.register(config);
-		this.context.refresh();
+		EnvironmentTestUtils.addEnvironment(this.environment, environment);
+		this.context = new SpringApplicationBuilder(config).environment(this.environment)
+				.web(WebApplicationType.NONE).run();
 	}
 
 	@Configuration
@@ -310,17 +296,6 @@ public class ConditionalOnPropertyTests {
 
 	}
 
-	@Configuration
-	@ConditionalOnProperty(name = "the-relaxed-property", relaxedNames = false)
-	protected static class NonRelaxedPropertiesRequiredConfiguration {
-
-		@Bean
-		public String foo() {
-			return "foo";
-		}
-
-	}
-
 	@Configuration
 	// i.e ${simple.myProperty:true}
 	@ConditionalOnProperty(prefix = "simple", name = "my-property", havingValue = "true", matchIfMissing = true)
@@ -378,17 +353,6 @@ public class ConditionalOnPropertyTests {
 
 	}
 
-	@Configuration
-	@ConditionalOnProperty(prefix = "simple", name = "my-property", havingValue = "bar", relaxedNames = false)
-	static class StrictNameConfig {
-
-		@Bean
-		public String foo() {
-			return "foo";
-		}
-
-	}
-
 	@Configuration
 	@ConditionalOnProperty(prefix = "simple", name = { "my-property",
 			"my-another-property" }, havingValue = "bar")
@@ -434,6 +398,7 @@ public class ConditionalOnPropertyTests {
 
 	}
 
+	@Configuration
 	@ConditionalOnMyFeature
 	protected static class MetaAnnotation {
 
@@ -444,6 +409,7 @@ public class ConditionalOnPropertyTests {
 
 	}
 
+	@Configuration
 	@ConditionalOnMyFeature
 	@ConditionalOnProperty(prefix = "my.other.feature", name = "enabled", havingValue = "true", matchIfMissing = false)
 	protected static class MetaAnnotationAndDirectAnnotation {