Polish

spring-autoconfigure/src/test/java/org/springframework/autoconfigure/orm/jpa/HibernateJpaAutoConfigurationTests.java

@@ -16,10 +16,6 @@
 
 package org.springframework.autoconfigure.orm.jpa;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
-
 import javax.sql.DataSource;
 
 import org.junit.After;
@@ -40,6 +36,10 @@ import org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter;
 import org.springframework.orm.jpa.support.OpenEntityManagerInViewInterceptor;
 import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
 /**
  * Tests for {@link HibernateJpaAutoConfiguration}.
  * 
@@ -51,14 +51,15 @@ public class HibernateJpaAutoConfigurationTests {
 
 	@After
 	public void close() {
-		if (context != null) {
-			context.close();
+		if (this.context != null) {
+			this.context.close();
 		}
 	}
 
 	@Test
 	public void testEntityManagerCreated() throws Exception {
-		((AnnotationConfigApplicationContext) this.context).register(ComponentScanDetectorConfiguration.class,
+		((AnnotationConfigApplicationContext) this.context).register(
+				ComponentScanDetectorConfiguration.class,
 				EmbeddedDatabaseConfiguration.class, HibernateJpaAutoConfiguration.class,
 				PropertyPlaceholderAutoConfiguration.class, TestConfiguration.class);
 		this.context.refresh();
@@ -68,10 +69,11 @@ public class HibernateJpaAutoConfigurationTests {
 
 	@Test
 	public void testDataSourceTransactionManagerNotCreated() throws Exception {
-		((AnnotationConfigApplicationContext) this.context).register(ComponentScanDetectorConfiguration.class,
+		((AnnotationConfigApplicationContext) this.context).register(
+				ComponentScanDetectorConfiguration.class,
 				EmbeddedDatabaseConfiguration.class, HibernateJpaAutoConfiguration.class,
-				DataSourceTransactionManagerAutoConfiguration.class, PropertyPlaceholderAutoConfiguration.class,
-				TestConfiguration.class);
+				DataSourceTransactionManagerAutoConfiguration.class,
+				PropertyPlaceholderAutoConfiguration.class, TestConfiguration.class);
 		this.context.refresh();
 		assertNotNull(this.context.getBean(DataSource.class));
 		assertTrue(this.context.getBean("transactionManager") instanceof JpaTransactionManager);
@@ -80,33 +82,44 @@ public class HibernateJpaAutoConfigurationTests {
 	@Test
 	public void testOpenEntityManagerInViewInterceptorCreated() throws Exception {
 		AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
-		context.register(ComponentScanDetectorConfiguration.class, EmbeddedDatabaseConfiguration.class,
-				HibernateJpaAutoConfiguration.class, PropertyPlaceholderAutoConfiguration.class,
-				TestConfiguration.class);
+		context.register(ComponentScanDetectorConfiguration.class,
+				EmbeddedDatabaseConfiguration.class, HibernateJpaAutoConfiguration.class,
+				PropertyPlaceholderAutoConfiguration.class, TestConfiguration.class);
 		this.context = context;
 		this.context.refresh();
 		assertNotNull(this.context.getBean(OpenEntityManagerInViewInterceptor.class));
 	}
 
 	@Test
-	public void testOpenEntityManagerInViewInterceptorNotRegisteredWhenFilterPresent() throws Exception {
+	public void testOpenEntityManagerInViewInterceptorNotRegisteredWhenFilterPresent()
+			throws Exception {
 		AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
-		context.register(TestFilterConfiguration.class, ComponentScanDetectorConfiguration.class, EmbeddedDatabaseConfiguration.class,
-				HibernateJpaAutoConfiguration.class, PropertyPlaceholderAutoConfiguration.class);
+		context.register(ComponentScanDetectorConfiguration.class,
+				EmbeddedDatabaseConfiguration.class, HibernateJpaAutoConfiguration.class,
+				PropertyPlaceholderAutoConfiguration.class, TestFilterConfiguration.class);
 		this.context = context;
 		this.context.refresh();
-		assertEquals(0, this.context.getBeanNamesForType(OpenEntityManagerInViewInterceptor.class).length);
+		assertEquals(
+				0,
+				this.context
+						.getBeanNamesForType(OpenEntityManagerInViewInterceptor.class).length);
 	}
 
 	@Test
-	public void testOpenEntityManagerInViewInterceptorNotRegisteredWhenExplicitlyOff() throws Exception {
+	public void testOpenEntityManagerInViewInterceptorNotRegisteredWhenExplicitlyOff()
+			throws Exception {
 		AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
 		TestUtils.addEnviroment(context, "spring.jpa.open_in_view:false");
-		context.register(TestConfiguration.class, ComponentScanDetectorConfiguration.class, EmbeddedDatabaseConfiguration.class,
-				HibernateJpaAutoConfiguration.class, PropertyPlaceholderAutoConfiguration.class);
+		context.register(TestConfiguration.class,
+				ComponentScanDetectorConfiguration.class,
+				EmbeddedDatabaseConfiguration.class, HibernateJpaAutoConfiguration.class,
+				PropertyPlaceholderAutoConfiguration.class);
 		this.context = context;
 		this.context.refresh();
-		assertEquals(0, this.context.getBeanNamesForType(OpenEntityManagerInViewInterceptor.class).length);
+		assertEquals(
+				0,
+				this.context
+						.getBeanNamesForType(OpenEntityManagerInViewInterceptor.class).length);
 	}
 
 	@ComponentScan(basePackageClasses = { City.class })

spring-bootstrap/src/main/java/org/springframework/bootstrap/config/ArrayDocumentMatcher.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.bootstrap.config;
 
 import java.util.Properties;
@@ -26,6 +27,8 @@ import org.springframework.util.StringUtils;
  * Matches a document containing a given key and where the value of that key is an array
  * containing one of the given values, or where one of the values matches one of the given
  * values (interpreted as regexes).
+ * 
+ * @author Dave Syer
  */
 public class ArrayDocumentMatcher implements DocumentMatcher {
 

spring-bootstrap/src/main/java/org/springframework/bootstrap/config/DefaultProfileDocumentMatcher.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.bootstrap.config;
 
 import java.util.Properties;
@@ -25,7 +26,6 @@ import org.springframework.bootstrap.config.YamlProcessor.MatchStatus;
  * explicitly (i.e. matches if "spring.profiles" is not found and not otherwise).
  * 
  * @author Dave Syer
- * 
  */
 public final class DefaultProfileDocumentMatcher implements DocumentMatcher {
 
@@ -33,7 +33,8 @@ public final class DefaultProfileDocumentMatcher implements DocumentMatcher {
 	public MatchStatus matches(Properties properties) {
 		if (!properties.containsKey("spring.profiles")) {
 			return MatchStatus.FOUND;
-		} else {
+		}
+		else {
 			return MatchStatus.NOT_FOUND;
 		}
 	}

spring-bootstrap/src/main/java/org/springframework/bootstrap/config/PropertiesPropertySourceLoader.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.bootstrap.config;
 
 import java.io.IOException;
@@ -26,6 +27,8 @@ import org.springframework.core.io.support.PropertiesLoaderUtils;
 
 /**
  * Strategy to load '.properties' files into a {@link PropertySource}.
+ * 
+ * @author Dave Syer
  */
 public class PropertiesPropertySourceLoader implements PropertySourceLoader {
 
@@ -39,7 +42,8 @@ public class PropertiesPropertySourceLoader implements PropertySourceLoader {
 		try {
 			Properties properties = loadProperties(resource, environment);
 			return new PropertiesPropertySource(resource.getDescription(), properties);
-		} catch (IOException ex) {
+		}
+		catch (IOException ex) {
 			throw new IllegalStateException("Could not load properties from " + resource,
 					ex);
 		}

spring-bootstrap/src/main/java/org/springframework/bootstrap/config/PropertySourceLoader.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.bootstrap.config;
 
 import org.springframework.core.env.Environment;
@@ -21,11 +22,14 @@ import org.springframework.core.io.Resource;
 
 /**
  * Strategy interface used to load a {@link PropertySource}.
+ * 
+ * @author Dave Syer
  */
 public interface PropertySourceLoader {
 
 	/**
-	 * @return Is this resource supported?
+	 * Returns {@code true} if the {@link Resource} is supported.
+	 * @return if the resource is supported
 	 */
 	public boolean supports(Resource resource);
 

spring-bootstrap/src/main/java/org/springframework/bootstrap/config/SpringProfileDocumentMatcher.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.bootstrap.config;
 
 import java.util.Properties;
@@ -20,19 +21,25 @@ import java.util.Properties;
 import org.springframework.bootstrap.config.YamlProcessor.DocumentMatcher;
 import org.springframework.bootstrap.config.YamlProcessor.MatchStatus;
 import org.springframework.core.env.Environment;
+import org.springframework.util.Assert;
 
 /**
- * @author Dave Syer
+ * {@link DocumentMatcher} backed by {@link Environment#getActiveProfiles()}.
  * 
+ * @author Dave Syer
  */
 public class SpringProfileDocumentMatcher implements DocumentMatcher {
 
+	private static final String[] DEFAULT_PROFILES = new String[] { "default" };
+
 	private final Environment environment;
 
 	/**
-	 * @param environment
+	 * Create a new {@link SpringProfileDocumentMatcher} instance.
+	 * @param environment the environment
 	 */
 	public SpringProfileDocumentMatcher(Environment environment) {
+		Assert.notNull(environment, "Environment must not be null");
 		this.environment = environment;
 	}
 
@@ -40,7 +47,7 @@ public class SpringProfileDocumentMatcher implements DocumentMatcher {
 	public MatchStatus matches(Properties properties) {
 		String[] profiles = this.environment.getActiveProfiles();
 		if (profiles.length == 0) {
-			profiles = new String[] { "default" };
+			profiles = DEFAULT_PROFILES;
 		}
 		return new ArrayDocumentMatcher("spring.profiles", profiles).matches(properties);
 	}

spring-bootstrap/src/main/java/org/springframework/bootstrap/config/YamlMapFactoryBean.java

@@ -76,13 +76,12 @@ public class YamlMapFactoryBean extends YamlProcessor implements
 	public Map<String, Object> getObject() {
 		if (!this.singleton || this.instance == null) {
 			final Map<String, Object> result = new LinkedHashMap<String, Object>();
-			MatchCallback callback = new MatchCallback() {
+			process(new MatchCallback() {
 				@Override
 				public void process(Properties properties, Map<String, Object> map) {
 					merge(result, map);
 				}
-			};
-			process(callback);
+			});
 			this.instance = result;
 		}
 		return this.instance;

spring-bootstrap/src/main/java/org/springframework/bootstrap/config/YamlProcessor.java

@@ -27,6 +27,7 @@ import java.util.Properties;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.springframework.core.io.Resource;
+import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 import org.yaml.snakeyaml.Yaml;
 
@@ -92,17 +93,13 @@ public class YamlProcessor {
 	/**
 	 * Method to use for resolving resources. Each resource will be converted to a Map, so
 	 * this property is used to decide which map entries to keep in the final output from
-	 * this factory. Possible values:
-	 * <ul>
-	 * <li><code>OVERRIDE</code> for replacing values from earlier in the list</li>
-	 * <li><code>FIRST_FOUND</code> if you want to take the first resource in the list
-	 * that exists and use just that.</li>
-	 * </ul>
+	 * this factory.
 	 * 
-	 * 
-	 * @param resolutionMethod the resolution method to set. Defaults to OVERRIDE.
+	 * @param resolutionMethod the resolution method to set (defaults to
+	 * {@link ResolutionMethod#OVERRIDE}).
 	 */
 	public void setResolutionMethod(ResolutionMethod resolutionMethod) {
+		Assert.notNull(resolutionMethod, "ResolutionMethod must not be null");
 		this.resolutionMethod = resolutionMethod;
 	}
 
@@ -147,7 +144,8 @@ public class YamlProcessor {
 			}
 			this.logger.info("Loaded " + count + " document" + (count > 1 ? "s" : "")
 					+ " from YAML resource: " + resource);
-		} catch (IOException ex) {
+		}
+		catch (IOException ex) {
 			handleProcessError(resource, ex);
 		}
 		return count > 0;
@@ -175,12 +173,13 @@ public class YamlProcessor {
 		if (this.documentMatchers.isEmpty()) {
 			this.logger.debug("Merging document (no matchers set)" + map);
 			callback.process(properties, map);
-		} else {
+		}
+		else {
 			boolean valueFound = false;
 			MatchStatus result = MatchStatus.ABSTAIN;
 			for (DocumentMatcher matcher : this.documentMatchers) {
 				MatchStatus match = matcher.matches(properties);
-				result = match.ordinal() < result.ordinal() ? match : result;
+				result = MatchStatus.getMostSpecific(match, result);
 				if (match == MatchStatus.FOUND) {
 					this.logger.debug("Matched document with document matcher: "
 							+ properties);
@@ -193,7 +192,8 @@ public class YamlProcessor {
 			if (result == MatchStatus.ABSTAIN && this.matchDefault) {
 				this.logger.debug("Matched document with default matcher: " + map);
 				callback.process(properties, map);
-			} else if (!valueFound) {
+			}
+			else if (!valueFound) {
 				this.logger.debug("Unmatched document");
 				return false;
 			}
@@ -208,19 +208,22 @@ public class YamlProcessor {
 			if (StringUtils.hasText(path)) {
 				if (key.startsWith("[")) {
 					key = path + key;
-				} else {
+				}
+				else {
 					key = path + "." + key;
 				}
 			}
 			Object value = entry.getValue();
 			if (value instanceof String) {
 				properties.put(key, value);
-			} else if (value instanceof Map) {
+			}
+			else if (value instanceof Map) {
 				// Need a compound key
 				@SuppressWarnings("unchecked")
 				Map<String, Object> map = (Map<String, Object>) value;
 				assignProperties(properties, map, key);
-			} else if (value instanceof Collection) {
+			}
+			else if (value instanceof Collection) {
 				// Need a compound key
 				@SuppressWarnings("unchecked")
 				Collection<Object> collection = (Collection<Object>) value;
@@ -229,26 +232,74 @@ public class YamlProcessor {
 					assignProperties(properties,
 							Collections.singletonMap("[" + (count++) + "]", object), key);
 				}
-			} else {
+			}
+			else {
 				properties.put(key, value == null ? "" : value);
 			}
 		}
 	}
 
+	/**
+	 * Callback interface used to process properties in a resulting map.
+	 */
 	public interface MatchCallback {
+
+		/**
+		 * Process the properties.
+		 * @param properties the properties to process
+		 * @param map a mutable result map
+		 */
 		void process(Properties properties, Map<String, Object> map);
+
 	}
 
+	/**
+	 * Strategy interface used the test if properties match.
+	 */
 	public interface DocumentMatcher {
+
+		/**
+		 * Test if the given properties match.
+		 * @param properties the properties to test
+		 * @return the status of the match.
+		 */
 		MatchStatus matches(Properties properties);
-	}
 
-	public static enum ResolutionMethod {
-		OVERRIDE, OVERRIDE_AND_IGNORE, FIRST_FOUND
 	}
 
+	/**
+	 * Status returned from {@link DocumentMatcher#matches(Properties)}
+	 */
 	public static enum MatchStatus {
-		FOUND, NOT_FOUND, ABSTAIN
+		FOUND, NOT_FOUND, ABSTAIN;
+
+		/**
+		 * Compare two {@link MatchStatus} items, returning the most specific status.
+		 */
+		public static MatchStatus getMostSpecific(MatchStatus a, MatchStatus b) {
+			return a.ordinal() < b.ordinal() ? a : b;
+		}
+	}
+
+	/**
+	 * Resolution methods.
+	 */
+	public static enum ResolutionMethod {
+
+		/**
+		 * Replace values from earlier in the list.
+		 */
+		OVERRIDE,
+
+		/**
+		 * Replace values from earlier in the list, ignoring any failures.
+		 */
+		OVERRIDE_AND_IGNORE,
+
+		/**
+		 * Take the first resource in the list that exists and use just that.
+		 */
+		FIRST_FOUND
 	}
 
 }

spring-bootstrap/src/main/java/org/springframework/bootstrap/config/YamlPropertiesFactoryBean.java

@@ -77,13 +77,12 @@ public class YamlPropertiesFactoryBean extends YamlProcessor implements
 	public Properties getObject() {
 		if (!this.singleton || this.instance == null) {
 			final Properties result = new Properties();
-			MatchCallback callback = new MatchCallback() {
+			process(new MatchCallback() {
 				@Override
 				public void process(Properties properties, Map<String, Object> map) {
 					result.putAll(properties);
 				}
-			};
-			process(callback);
+			});
 			this.instance = result;
 		}
 		return this.instance;

spring-bootstrap/src/main/java/org/springframework/bootstrap/config/YamlPropertySourceLoader.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.bootstrap.config;
 
 import java.io.IOException;
@@ -27,35 +28,16 @@ import org.springframework.core.io.Resource;
 
 /**
  * Strategy to load '.yml' files into a {@link PropertySource}.
+ * 
+ * @author Dave Syer
  */
 public class YamlPropertySourceLoader extends PropertiesPropertySourceLoader {
 
 	private List<DocumentMatcher> matchers;
 
 	/**
-	 * A property source loader that loads all properties and matches all documents.
-	 * 
-	 * @return a property source loader
-	 */
-	public static YamlPropertySourceLoader matchAllLoader() {
-		return new YamlPropertySourceLoader();
-	}
-
-	/**
-	 * A property source loader that matches documents that have no explicit profile or
-	 * which have an explicit "spring.profiles.active" value in the current active
-	 * profiles.
-	 * 
-	 * @return a property source loader
-	 */
-	public static YamlPropertySourceLoader springProfileAwareLoader(
-			Environment environment) {
-		return new YamlPropertySourceLoader(new SpringProfileDocumentMatcher(environment),
-				new DefaultProfileDocumentMatcher());
-	}
-
-	/**
-	 * @param matchers
+	 * Create a {@link YamlPropertySourceLoader} instance with the specified matchers.
+	 * @param matchers the document matchers
 	 */
 	public YamlPropertySourceLoader(DocumentMatcher... matchers) {
 		this.matchers = Arrays.asList(matchers);
@@ -78,4 +60,27 @@ public class YamlPropertySourceLoader extends PropertiesPropertySourceLoader {
 		return factory.getObject();
 	}
 
+	/**
+	 * A property source loader that loads all properties and matches all documents.
+	 * 
+	 * @return a property source loader
+	 */
+	public static YamlPropertySourceLoader matchAllLoader() {
+		return new YamlPropertySourceLoader();
+	}
+
+	/**
+	 * A property source loader that matches documents that have no explicit profile or
+	 * which have an explicit "spring.profiles.active" value in the current active
+	 * profiles.
+	 * 
+	 * @return a property source loader
+	 */
+	public static YamlPropertySourceLoader springProfileAwareLoader(
+			Environment environment) {
+		return new YamlPropertySourceLoader(
+				new SpringProfileDocumentMatcher(environment),
+				new DefaultProfileDocumentMatcher());
+	}
+
 }

spring-bootstrap/src/test/java/org/springframework/bootstrap/config/ArrayDocumentMatcherTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.bootstrap.config;
 
 import java.io.IOException;
@@ -26,8 +27,9 @@ import org.springframework.core.io.support.PropertiesLoaderUtils;
 import static org.junit.Assert.assertEquals;
 
 /**
- * @author Dave Syer
+ * Tests for {@link ArrayDocumentMatcher}.
  * 
+ * @author Dave Syer
  */
 public class ArrayDocumentMatcherTests {