Fix #22: Failure to set fields to null

releases.moxie

     html: ~
     text: ~
     security: ~
-    fixes: ~
+    fixes:
+    - Fixed setting null column values (issue-22)
     changes: ~
     additions:
-    - Added groupBy methods to QueryWhere
+    - Added groupBy methods to QueryWhere (issue-20)
     dependencyChanges: ~
     contributors: ~
 }

src/main/java/com/iciql/Query.java

 		return stat.executeUpdate();
 	}
 
+	public <A> Query<T> setNull(A field) {
+		return set(field).to(null);
+	}
+
 	public <A> UpdateColumnSet<T, A> set(A field) {
 		from.getAliasDefinition().checkMultipleEnums(field);
 		return new UpdateColumnSet<T, A>(this, field);
 			token.appendSQL(stat, this);
 			return;
 		}
-		if (alias != null && value.getClass().isEnum()) {
+		if (alias != null && value != null && value.getClass().isEnum()) {
 			// special case:
 			// value is first enum constant which is also the alias object.
 			// the first enum constant is used as the alias because we can not
 
 	private void addParameter(SQLStatement stat, Object alias, Object value) {
 		SelectColumn<T> col = getColumnByReference(alias);
-		if (col != null && value.getClass().isEnum()) {
+		if (col != null && value != null && value.getClass().isEnum()) {
 			// enum
 			EnumType type = col.getFieldDefinition().enumType;
 			Enum<?> anEnum = (Enum<?>) value;

src/main/java/com/iciql/TableDefinition.java

 			buff.appendExceptFirst(", ");
 			buff.append('?');
 			Object value = getValue(obj, field);
-			if (value == null && !field.nullable) {
-				// try to interpret and instantiate a default value
-				value = ModelUtils.getDefaultValue(field, db.getDialect().getDateTimeClass());
+			if (value == null) {
+				if (!field.nullable) {
+					// try to interpret and instantiate a default value
+					value = ModelUtils.getDefaultValue(field, db.getDialect().getDateTimeClass());
+				}
 			}
 			Object parameter = db.getDialect().serialize(value, field.typeAdapter);
 			stat.addParameter(parameter);
 			// conditionally skip insert of null
 			Object value = getValue(obj, field);
 			if (value == null) {
-				if (field.nullable) {
-					// skip null assignment, field is nullable
-					return true;
-				} else if (StringUtils.isNullOrEmpty(field.defaultValue)) {
-					IciqlLogger.warn("no default value, skipping null insert assignment for {0}.{1}",
-							tableName, field.columnName);
-					return true;
-				}
+				return !StringUtils.isNullOrEmpty(field.defaultValue);
 			}
 		}
 		return false;

src/test/java/com/iciql/test/UpdateTest.java

 
 import static java.sql.Date.valueOf;
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 
 import org.junit.After;
 
 	}
 
+	@Test
+	public void testSetNull() {
+		Product p = new Product();
+		Product original = db.from(p).where(p.productId).is(1).selectFirst();
+
+		String originalName = original.productName;
+		db.from(p).setNull(p.productName).update();
+
+		// confirm the data was properly updated
+		Product revised = db.from(p).where(p.productId).is(1).selectFirst();
+		assertNull(revised.productName);
+
+		// restore the data
+		db.from(p).set(p.productName).to(originalName).update();
+
+		// confirm the data was properly restored
+		Product restored = db.from(p).where(p.productId).is(1).selectFirst();
+		assertEquals(originalName, restored.productName);
+
+	}
+
 }

src/test/java/com/iciql/test/models/Customer.java

 				new Customer("ANTON", "CA"),
 				new Customer("BROWN", "LA"),
 				new Customer("SMITH", "NY"),
-				new Customer("JONES", "ME"));
+				new Customer("JONES", "ME"),
+				new Customer(null, null));
 	}
 
 }