DATAREST-753 - Added support for Groovy-based domain objects.

Groovy-based objects inherit from GroovyObject. This brings along attributes that Spring Data REST may try to parse when generating metadata like JSON Schema. Also verify ALPS is supported.

We now exclude those artificial properties from being exposed in the schema as well as causing issues.

Original pull request: #206.

spring-data-rest-webmvc/src/main/java/org/springframework/data/rest/webmvc/json/PersistentEntityToJsonSchemaConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2016 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.
@@ -54,6 +54,7 @@ import org.springframework.util.StringUtils;
 
 import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.introspect.AnnotatedMember;
 import com.fasterxml.jackson.databind.introspect.BeanPropertyDefinition;
 
 /**
@@ -61,6 +62,7 @@ import com.fasterxml.jackson.databind.introspect.BeanPropertyDefinition;
  * 
  * @author Jon Brisbin
  * @author Oliver Gierke
+ * @author Greg Turnquist
  */
 public class PersistentEntityToJsonSchemaConverter implements ConditionalGenericConverter {
 
@@ -186,18 +188,25 @@ public class PersistentEntityToJsonSchemaConverter implements ConditionalGeneric
 				}
 			}
 
-			TypeInformation<?> propertyType = persistentProperty == null
-					? ClassTypeInformation.from(definition.getPrimaryMember().getRawType())
+			boolean isPersistentPropertyNull = persistentProperty == null;
+
+			AnnotatedMember primaryMember = definition.getPrimaryMember();
+			if (primaryMember ==  null) { // Ignore bean definitions with neither a getter nor a setter
+				continue;
+			}
+
+			TypeInformation<?> propertyType = isPersistentPropertyNull
+					? ClassTypeInformation.from(primaryMember.getRawType())
 					: persistentProperty.getTypeInformation();
 			TypeInformation<?> actualPropertyType = propertyType.getActualType();
 			Class<?> rawPropertyType = propertyType.getType();
 
 			JsonSchemaFormat format = configuration.getMetadataConfiguration().getSchemaFormatFor(rawPropertyType);
-			ResourceDescription description = persistentProperty == null
+			ResourceDescription description = isPersistentPropertyNull
 					? jackson.getFallbackDescription(metadata, definition) : getDescriptionFor(persistentProperty, metadata);
 			JsonSchemaProperty property = getSchemaProperty(definition, propertyType, description);
 
-			boolean isSyntheticProperty = persistentProperty == null;
+			boolean isSyntheticProperty = isPersistentPropertyNull;
 			boolean isNotWritable = !isSyntheticProperty && !persistentProperty.isWritable();
 			boolean isJacksonReadOnly = !isSyntheticProperty && jackson.isReadOnly(persistentProperty);
 
@@ -224,7 +233,7 @@ public class PersistentEntityToJsonSchemaConverter implements ConditionalGeneric
 				continue;
 			}
 
-			if (persistentProperty == null) {
+			if (isPersistentPropertyNull) {
 				registrar.register(property, actualPropertyType);
 				continue;
 			}