Favor ObjectUtils over Objects for equals/hashCode.

Original Pull Request: spring-projects#3684

Author: christophstrobl

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/UnwrapEntityContext.java

@@ -15,7 +15,7 @@
  */
 package org.springframework.data.mongodb.core.mapping;
 
-import java.util.Objects;
+import org.springframework.util.ObjectUtils;
 
 /**
  * @author Christoph Strobl
@@ -36,21 +36,11 @@ public MongoPersistentProperty getProperty() {
 
 	/*
 	 * (non-Javadoc)
-	 * 
-	 * @see java.lang.Object#hashCode()
-	 */
-	@Override
-	public int hashCode() {
-		return Objects.hash(property);
-	}
-
-	/*
-	 * (non-Javadoc)
-	 * 
 	 * @see java.lang.Object#equals(java.lang.Object)
 	 */
 	@Override
 	public boolean equals(Object obj) {
+
 		if (this == obj) {
 			return true;
 		}
@@ -59,8 +49,16 @@ public boolean equals(Object obj) {
 			return false;
 		}
 
-		UnwrapEntityContext other = (UnwrapEntityContext) obj;
+		UnwrapEntityContext that = (UnwrapEntityContext) obj;
+		return ObjectUtils.nullSafeEquals(property, that.property);
+	}
 
-		return Objects.equals(property, other.property);
+	/*
+	 * (non-Javadoc)
+	 * @see java.lang.Object#hashCode()
+	 */
+	@Override
+	public int hashCode() {
+		return ObjectUtils.nullSafeHashCode(property);
 	}
 }

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/UnwrappedMongoPersistentProperty.java

@@ -18,13 +18,13 @@
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.Objects;
 
 import org.springframework.data.mapping.Association;
 import org.springframework.data.mapping.PersistentEntity;
 import org.springframework.data.mapping.PersistentPropertyAccessor;
 import org.springframework.data.util.TypeInformation;
 import org.springframework.lang.Nullable;
+import org.springframework.util.ObjectUtils;
 
 /**
  * Unwrapped variant of {@link MongoPersistentProperty}.
@@ -325,21 +325,11 @@ public <T> PersistentPropertyAccessor<T> getAccessorForOwner(T owner) {
 
 	/*
 	 * (non-Javadoc)
-	 * 
-	 * @see java.lang.Object#hashCode()
-	 */
-	@Override
-	public int hashCode() {
-		return Objects.hash(delegate, context);
-	}
-
-	/*
-	 * (non-Javadoc)
-	 * 
 	 * @see java.lang.Object#equals(java.lang.Object)
 	 */
 	@Override
 	public boolean equals(Object obj) {
+
 		if (this == obj) {
 			return true;
 		}
@@ -348,8 +338,22 @@ public boolean equals(Object obj) {
 			return false;
 		}
 
-		UnwrappedMongoPersistentProperty other = (UnwrappedMongoPersistentProperty) obj;
+		UnwrappedMongoPersistentProperty that = (UnwrappedMongoPersistentProperty) obj;
+		if (!ObjectUtils.nullSafeEquals(delegate, that.delegate)) {
+			return false;
+		}
+		return ObjectUtils.nullSafeEquals(context, that.context);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see java.lang.Object#hashCode()
+	 */
+	@Override
+	public int hashCode() {
 
-		return Objects.equals(delegate, other.delegate) && Objects.equals(context, other.context);
+		int result = ObjectUtils.nullSafeHashCode(delegate);
+		result = 31 * result + ObjectUtils.nullSafeHashCode(context);
+		return result;
 	}
 }