eclipselink

How do you use YearMonth within an entity? I have seen a lot of stack overflow answers about a converter? Is this still needed and if so how? @Basic(optional = false) @NotNull @Column(name = "cc_exp_date") private YearMonth ccExpDate; The exception I am getting is below. Could I just convert this into a date within the set method and convert back to YearMonth within the get method of the entity as a work around? MysqlDataTruncation: Data truncation: Incorrect date value: '\xAC\xED\x00\x05sr\x00\x0Djava.time.Ser\x95]\x84\xBA\x1B"H\xB2\x0C\x00\x00xpw\x06\x0C\x00\x00\x07\xE2\x02x' for column 'cc

I have "post" entity/table with this "schema": @Id @GeneratedValue(strategy = GenerationType.AUTO) int id; @GeneratedValue(strategy = GenerationType.AUTO) private Integer postId; private Integer revisionId; private Boolean isCurrentRevision; So, table contains posts, each of them has multiple revisions, but only of them (for each post) is current. Now, let's say I want to persist another revision of existing post (i.e. update post): I need to find highest existing revisionId for this postId, increment it and set it to revisionId. Also this is the new current revision and so it should be marked

Is it possible to do indexed element access in JPQL like in HQL : select o from Order o where o.items[0].id = 1234 I couldn't find something related in the JPA 2 specs, I am targeting EclipseLink JPA here, so if you come up with an EclipseLink solution, that's ok as well, although a JPQL standard solution is preferred. The INDEX function should do the trick (actually I tested it and it does): SELECT o FROM Order o JOIN o.items i WHERE i.id = 1234 AND INDEX(i) = 0 From the JPA 2.0 specification ( 4.6.17.2.2 Arithmetic Functions ): The INDEX function returns an integer value corresponding to the

There are two tables in MySQL database user_table feedback The relationship between them is intuitive - one to many from user_table to feedback . I need to fetch only a list of selected columns from these tables which are From feedback feedbackId (java.lang.Long) feedbackTitle (java.lang.String) feedbackDescription (String, decorated by @Lob ) feedbackDate (org.joda.time.DateTime) testimonial (java.lang.Boolean) From user_table userId (java.lang.Long) firstName (java.lang.String) These many fields out of many others are required to get by executing a query. The criteria query is as follows.

I am having a problem when calling session bean method passing method parameters from client application, the data reaches the method call is always null or set to default value. while the process of the method works well with the object for example: -we have method to persist an object entity addStudent(Student student); - from the client we create the student object setting student fields like student name and so on, calling the method addStudent(ourStudent); this ourStudent reaches method with fields of null or default value. the student is added with these empty fields. Thanks in advance.