HCK-12935: comments in alter script (#213)

Author: AlikRakhmonov

forward_engineering/alterScript/alterScriptHelpers/columnHelpers/commentsHelper.js

@@ -41,10 +41,10 @@ const getUpdatedCommentOnColumnScriptDtos = ({ scriptFormat, collection }) => {
 			const oldName = jsonSchema.compMod.oldField.name;
 			const oldComment = collection.role.properties[oldName]?.description;
 
-			return newComment && (!oldComment || newComment !== oldComment);
+			return newComment !== oldComment;
 		})
 		.map(([name, jsonSchema]) => {
-			const wrappedComment = wrapComment(jsonSchema.description);
+			const wrappedComment = jsonSchema.description ? wrapComment(jsonSchema.description) : 'NULL';
 			const columnName = prepareNameForScriptFormat(scriptFormat)(name);
 			const fullColumnName = `${fullTableName}.${columnName}`;
 

forward_engineering/alterScript/alterScriptHelpers/entityHelpers/commentsHelper.js

@@ -31,13 +31,13 @@ const getUpdatedCommentOnCollectionScriptDto = ({ scriptFormat, collection }) =>
 	}
 
 	const { old: oldComment, new: newComment } = descriptionInfo;
-	if (!newComment || newComment === oldComment) {
+	if (newComment === oldComment) {
 		return undefined;
 	}
 
 	const collectionSchema = getSchemaOfAlterCollection(collection);
 	const fullTableName = getFullCollectionName(scriptFormat)(collectionSchema);
-	const comment = wrapComment(newComment);
+	const comment = newComment ? wrapComment(newComment) : 'NULL';
 	const script = updateTableComment(fullTableName, comment);
 
 	return AlterScriptDto.getInstance([script], true, false);

forward_engineering/alterScript/alterScriptHelpers/viewHelpers/commentsHelper.js

@@ -25,13 +25,13 @@ const updateViewComment = (objectName, comment, isMaterializedView) => {
 const getUpdatedCommentScriptDto = ({ scriptFormat, view }) => {
 	const description = view?.role?.compMod?.description || {};
 
-	if (!description.new || description.new === description.old) {
+	if (description.new === description.old) {
 		return;
 	}
 
 	const schemaName = view.compMod?.keyspaceName;
 	const fullViewName = getNamePrefixedWithSchemaNameForScriptFormat(scriptFormat)(view.code || view.name, schemaName);
-	const wrappedComment = wrapComment(description.new);
+	const wrappedComment = description.new ? wrapComment(description.new) : 'NULL';
 	const script = updateViewComment(fullViewName, wrappedComment, view.materialized);
 
 	return AlterScriptDto.getInstance([script], true, false);