mapping

问题 The error I get is " org.hibernate.MappingException: Repeated column in mapping for entity: cdd.model.Answer column: answer_id (should be mapped with insert="false" update="false") " . However when I put those as attributes I get the error: "Attribute "insert" must be declared for element type "id"." Any help would be appreciated. Class: public class Answer { UUID answerID; String content; //constructors and getters and setters } Table: CREATE TABLE IF NOT EXISTS answer ( answer_id uuid NOT

问题 The error I get is " org.hibernate.MappingException: Repeated column in mapping for entity: cdd.model.Answer column: answer_id (should be mapped with insert="false" update="false") " . However when I put those as attributes I get the error: "Attribute "insert" must be declared for element type "id"." Any help would be appreciated. Class: public class Answer { UUID answerID; String content; //constructors and getters and setters } Table: CREATE TABLE IF NOT EXISTS answer ( answer_id uuid NOT

问题 I have COURSE, STUDENT, SCHEDULE tables. table course(id, name, ....), table student(id, name, ...), table schedule(id, c_id, s_id). Now I want to left join schedule table with course and student table. Question (1): What's the best way to do join these 3 tables in jooq? I assume it's like: TableLike<?> firstjoin = sql .select() .from(Tables.SCHEUDLE) .leftOuterJoin(Tables.COURSE) .on(Tables.SCHEDULE.CID.eq(Tables.COURSE.ID)) .asTable(); Result<?> result = sql .select() .from(firstjoin)

问题 I am learning jpa through some examples ,involving a shopping cart and cart items.I defined them as below..but am not very sure about which mapping to use @Entity class Product{ private Long id; private String name; ... } @Entity class CartItem{ private Long id; private Product product; private int quantity; ... } @Entity class ShoppingCart{ private Long id; @OneToMany private Set<CartItem> cartItems; ... } What I am not very sure of ,is how to relate between Product and CartItem and how to

问题 In my form, I am using Formik/Yup for Validation. Currently, this works in my form perfectly: export default function AddUserPage() { const [firstName, setFirstName] = useState(""); const [email, setEmail] = useState(""); return ( <div> <Formik initialValues={{ firstName: "", email: "" }} onSubmit={(values, actions) => { setTimeout(() => { alert(JSON.stringify(values, null, 2)); actions.setSubmitting(false); }, 1000); }} validationSchema={schema} > {props => { const { values: { firstName,

问题 In my form, I am using Formik/Yup for Validation. Currently, this works in my form perfectly: export default function AddUserPage() { const [firstName, setFirstName] = useState(""); const [email, setEmail] = useState(""); return ( <div> <Formik initialValues={{ firstName: "", email: "" }} onSubmit={(values, actions) => { setTimeout(() => { alert(JSON.stringify(values, null, 2)); actions.setSubmitting(false); }, 1000); }} validationSchema={schema} > {props => { const { values: { firstName,

问题 This should be a quickie; just need an answer on short notice... I'm having to do a bit of maintenance on a webapp deployed under Tomcat 5.5.16 (behind IIS). It's currently set up with URLs in this format: http://server.com/myapp/UglyServletName1 ...and they just want it to be http://server.com/Friendly Obviously the servlet-mapping tag in web.xml isn't enough to map the URL outside of /myapp. Basically, I just need to know -- is there a trivial way to do this as a url-pattern or similar

问题 I have a MessengerData class which contains a list of resources. This is an example of the structure that I want to have: "messengerData":{ "fr":{ "messengerType":"ImageCategoryTitle", "imageURL":"https://assets.pernod-ricard.com/uk/media_images/test.jpg", "clickURL":"http://perdu.com", "videoURL":"", "brickSize":80, "textDatas":{ "category":{ "color":"#000000", "fontSize":14, "textValue":"Texte de cat\u00e9gorie en fran\u00e7ais" }, "title":{ "color":"#D66060", "fontSize":12, "textValue":

问题 Using Symfony v2.8 and phpStorm v2016 3.3, I am currently able to run x-debugger on my controller files located in the .../src/AppBundle/Controller directory and the include/require files located in subdirectories located below the Controller directory. Recently, I added a Service directory to .../src/AppBundle , and create, configure, and successfully execute an example service container that I found in the Symfony documentation, but I couldn't run x-debugger from phpStorm on the code in new

问题 I would like to create a map of the US showing both state and county boundaries (i.e. state boundaries in a different color). I typically do this using either shape files that I import or using ggplot2 's map_data function. However, I face three obstacles. 1) I cannot install gdal and geos in my computing environment so that precludes the use of any shape files or GeoJSON files (my attempts to map county level shape files loaded using fastshp have not been successful but I'm open to any