DATAREST-111 - Slightly raised precedence of RepositoryRestHandlerMapping.

Set order of RepositoryRestHandlerMapping to LOWEST_PRECEDENCE - 100 to give core Spring Framework components the chance to hook into the right place in the chain.

Refactored RepositoryRestHandlerMapping to really check for the exposed path and added test cases for handler method resolution.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/mapping/ResourceMappings.java

@@ -161,6 +161,25 @@ public class ResourceMappings implements Iterable<ResourceMetadata> {
 		return metadata.isExported();
 	}
 
+	/**
+	 * Returns whether we export a top-level resource for the given path.
+	 * 
+	 * @param path must not be {@literal null} or empty.
+	 * @return
+	 */
+	public boolean exportsTopLevelResourceFor(String path) {
+
+		Assert.hasText(path);
+
+		for (ResourceMetadata metadata : cache.values()) {
+			if (metadata.getPath().matches(path)) {
+				return metadata.isExported();
+			}
+		}
+
+		return false;
+	}
+
 	/**
 	 * Returns whether we have a {@link ResourceMapping} for the given type.
 	 * 

spring-data-rest-core/src/test/java/org/springframework/data/rest/core/mapping/ResourceMappingsIntegrationTest.java

@@ -97,4 +97,20 @@ public class ResourceMappingsIntegrationTest {
 		assertThat(mapping.getPath(), is(new Path("siblings")));
 		assertThat(mapping.isExported(), is(true));
 	}
+
+	/**
+	 * @see DATAREST-111
+	 */
+	@Test
+	public void exposesResourceByPath() {
+
+		assertThat(mappings.exportsTopLevelResourceFor("people"), is(true));
+		assertThat(mappings.exportsTopLevelResourceFor("orders"), is(true));
+
+		ResourceMetadata creditCardMapping = mappings.getMappingFor(CreditCard.class);
+		assertThat(creditCardMapping, is(notNullValue()));
+		assertThat(creditCardMapping.getPath(), is(new Path("creditCards")));
+		assertThat(creditCardMapping.isExported(), is(false));
+		assertThat(mappings.exportsTopLevelResourceFor("creditCards"), is(false));
+	}
 }