string « Map « JPA Q&A

1. JPA Map mapping    stackoverflow.com

How can I map a Map in JPA without using Hibernate's classes? Thanks in advance.

2. How do I map a set of string objects using JPA Annotations?    stackoverflow.com

@Entity
public class TestClass implements Serializable{
    private Integer id;
    private Set<String> mySet;

    @Id
    @GeneratedValue
    public Integer getId() ...

3. Hibernate on Oracle: mapping String property to CLOB column    stackoverflow.com

WARNING: see my own answer below. The problem is caused by old Oracle drivers that were present on the classpath in addition to 10.2.0.4. Problem solved. Leaving the rest of this ...

4. Storing a Map using JPA    stackoverflow.com

I am wondering if it is possible using annotations to persist the attributes map in the following class using JPA2

public class Example {
    long id;
    ...

5. Mapping Map in Hibernate    stackoverflow.com

I'm trying to map my Hashmap in Hibernate. All examples I can find are simply like this:

class FooBar{
    Map<String,String> myStrings;
}

<map role="ages">
<key column="id"/>
<index column="name" type="string"/> 
<element ...

6. How to set hibernate-mapping to allow for Strings longer than 255 characters?    stackoverflow.com

So I'm trying to learn by creating a blog-engine. I'm using Hibernate with MySQL. Here is my hibernate-mapping for the "Post" class:

 <hibernate-mapping package="com.enw.blog">
   <class name="Post" table="POST">
 ...

7. How to map a Map    stackoverflow.com

I tried

@ManyToMany(cascade = CascadeType.ALL)
Map<String, Double> data = new HashMap<String, Double>();

   org.hibernate.AnnotationException: Use of @OneToMany or @ManyToMany targeting an unmapped class: com.company.Klass.data[java.lang.Double]
at org.hibernate.cfg.annotations.CollectionBinder.bindManyToManySecondPass(CollectionBinder.java:1016)
at org.hibernate.cfg.annotations.CollectionBinder.bindStarToManySecondPass(CollectionBinder.java:567)
at ...

8. Hibernate mapping a map of strings    stackoverflow.com

I have the following table

userId
accountNumber
role

public class User 
{
   Map<String, ...

9. Mapping a Map with Hibernate and JPA    stackoverflow.com

I try the following mapping

@ElementCollection
private Map<String, Double> doubleValues;

org.hibernate.MappingException: Could not determine type for: java.util.Map, at table: ...

10. Mapping Map using Hibernate    stackoverflow.com

It seems that everywhere I look, there are outdated versions of this which no longer work. My problem seems really simple. I have a class in Java, which maps to a ...

11. JPA Map mapping with xml    stackoverflow.com

I am trying to define xml mapping for a Map<String,String> field. The entity class cannot be modified so I am using the XML variant of JPA mapping, but cannot figure out ...

12. Is it possible to map a Map with Hibernate?    stackoverflow.com

All is in the question. How to map a Map with Hibernate using annotations ? And what's the associated database structure ?

13. How to increase length of a String in mysql while mapping using JPA    stackoverflow.com

I'm having some trouble in JPA. I would be really thankful if someone could provide a solution. WIth JPA (I'm using MySQL DB), lets say, I have a class mapped as ...

14. Hibernate collection mapping: map property in Entity1    stackoverflow.com

I am trying to map the following entities with (legacy) DB tables and have trouble with mapping a map:

public class Configuration {

    private Long configurationId;
    ...

15. Hibernate String Mapping    coderanch.com

16. Mapping clob to String. setCharacterStream solution hangs.    forum.hibernate.org

I refered this page to Map Clob to String. https://www.hibernate.org/76.html Some solutions did not work in oracle/weblogic, oracle/websphere but using setCharacterStream in nullsafeset worked for both. However, application gets stuck in a special case. The special case contains 2 Clobs to be saved. The two Clobs get saved individually but not in one go. Code: public void nullSafeSet(PreparedStatement st, Object value, ...

17. HQL on Map    forum.hibernate.org

18. How to annotate Map property?    forum.hibernate.org

Hello Hibernate Geeks! I have a property I would like to map, and I'm not really sure how to do it (if it is possible). I want to store JMS properties in a Map field. As properties are Objects of only specific types (String and primitives) I believe Hibernate should be able to store them properly. Moreover I would like ...

19. Why hibernate mapping String to LONG (of Oracle)??    forum.hibernate.org

20. Map String, Map Class and Reload Hibernate    forum.hibernate.org

I have three interrelated questions. Any help would be greatly appreciated. At this point I'm just asking for high level responses, if you have supporting sections of either the hibernate manual or blogs/informational sections that would also be greatly appreciated. I hope I defined my questions out well enough. 1: Using the "classic" hibernate paridigm (User.hbm.xml, Role.hbm.xml, Address.hbm.xml, Contact.hbm.xml) instead of ...

21. collecting hibernate Query result into Map    forum.hibernate.org

Hi, I want to collect the results of a query into hashMap instead of list. This is my Query: String SQL_QUERY = "select subject, topicID from TracPojo where subject LIKE '%" + subject + "%'"; I need to store the subject as key and topicID as value of the hashMap. Is there any way to achieve this. This is my code: ...

22. How to save map>    forum.hibernate.org

Hallo everyone, there is a property in our project which should be saved in the database: private map> caches; I used the Hibernate-Tool to generate Mapping-Konfiguration for this property and got this one: And it does not work because each ...

23. Mapping classes with id as string    forum.hibernate.org

Newbie Joined: Tue Jul 05, 2011 6:10 am Posts: 4 The subject doesn't quite say it all but here goes. Some notes, I'm porting an existing project to hibernate so that I can easily extend support to different DBMS. I'm not an expert on database design but know a bit. Code: public abstract class AbstractDrugModel { // ...

24. Map Annotation with Clob value    forum.hibernate.org

Hi, I am looking for a way to annotate a CollectionOfElements of type Map so that the value column of the Map is created by Hibernate as a @Lob or @Clob my current code which works fine in handling the Map but creates a table "additional_data" with column "value" as VARCHAR, while I need a CLOB: Code: @Entity public class ...

25. What happens if I map a java.lang.String to a CLOB column    forum.hibernate.org

Hi I'm using clobs in my applications. I noticed that I can have a java.lang.String property mapped to a CLOB column. In this case Hibernate inserts the string like a regular varchar or it streams them as a CLOB?. This makes a very big difference because databases have a buffer size for sql commands and if the String value is very ...

26. Mapping a string property to an numeric column    forum.hibernate.org

Hi, I have an application that uses business objects that have strings as keys. Some of them are mapped on tables where the key columns are numeric. These tables are reference tables and key columns are assigned and contain integers only. What is happening is that when a load of such a command is issued, the following select statement is fired: ...

27. mapping String to Clob?    forum.hibernate.org

Hi, I am trying to map String to Clob, Clob size is specified as 256k. The problem is: if my string is less than 256k, and that I pull this Clob out of DB2 database and display it on one page, I find there is a long list of ????????(question marks) at the end. I guess this is because of the ...

28. Mapping Properties-like classes (string/object), v2.1.2    forum.hibernate.org

I'm having problems mapping a a Properties class in Hibernate 2.1.2. The class has only 2 fields, a String "name" and an Object "value". Although class2hbm suggest a mapping with only 2 fields, like: .. I keep getting ...

29. Query By Criteria With a Map of Strings?    forum.hibernate.org

... Criteria thingCriteria = session.createCriteria(Thing.class); Criteria attributeCriteria = thingCriteria.createCriteria("attributes"); Expression attributeName = Expression.eq( "", search.getAttributeName()); Expression attributeValue = Expression.eq( "", search.getAttributeName()); Junction junction = Expression.and(attributeName, attributeValue); attributeCriteria.add(junction); ...

30. Hibernate mapping string to long instead of varchar2    forum.hibernate.org

Hibernate version: 2.1.7 I'm testing our application with Oracle. I have an issue where Hibernate is mapping strings to the Oracle 'long' datatype instead of varchar2. Anyone know why this is and how I can fix it? For those who don't know, you can only have one long per table, however, I'm not using longs at all. eg. /** * @return ...

31. large string mapping for oracle    forum.hibernate.org

Hibernate version: 2.1.6 I have the following hibernate-mapping: ... .. ..its not running on oracle because the default mapping in hibernate is varchar2 and that is restricted to 4000 characters. ...

32. Comparing a Map value against a String    forum.hibernate.org

Hibernate version: 2.1.7c Name and version of the database you are using: Firebird 1.5.2 This seems like a simple thing but I can't seem to get it to work... We have a main object Printer that has a Map of Feature objects, and the Feature objects in turn have a Map of Setting objects. The key in each map is the ...

33. How to write mapping for Map>    forum.hibernate.org

I have the following scenarios for which i need to write hibernate mapping file. My POJO has the folllowing structure, public class Test { public Test() { } private Map> variable1; public void setVariable1(final Map> theVariable1) { variable1 = theVariable1; } public Map> getVariable1() { return variable1; } private Map> variable2; public void setVariable2(final Map> theVariable2) ...

34. characters appended when mapping string to clob    forum.hibernate.org

Hibernate version:3.0 Name and version of the database you are using:Oracle 10g I am using annotations to map a string field to clob using @Lob(type=LobType.CLOB), in my code I am doing the following steps. reading the object, setting fields (but not touching the clob) then i am calling saveOrUpdate on the object and it sets again the clob field and appends ...

35. Mapping MySQL TEXT column to java string    forum.hibernate.org

When retrieving persisted string property mapped to MySQL TEXT type, I'm getting string, containing something like this: "[B@f0a3e8" (address after @ differs on each invoke) Hibernate 3.0.5 MySQL 4.1.14 Mapping documents: Code: ...

36. string table mapping    forum.hibernate.org

Well if your tasks are all strings, then my suggestions would be to just store a "comma" dilimited string. And then modify you getTasks method to do a String.split(",") to get back the array. But if your Tasks are actual objects (with other parameters), then you shoudl have a Map or some kind of collection to hold it and use a ...

37. Mapping trouble, MappingExc. and no persister for string    forum.hibernate.org

Newbie Joined: Wed Feb 11, 2004 9:57 am Posts: 5 I have this ListMenu that contains a set of ListMenuItems. Each ListMenuItem knows it's parent menu and can link to a new ListMenu (submenu) or a couple of other things. The problem is that I for some reason get a "MappingException: No persister for java.lang.String" when I try to insert a ...

38. clob to string mapping support in Hibernate    forum.hibernate.org

CREATE TABLE CLR.CLR_USER_PERMISSIONS ( USER_ID VARCHAR2(16) NOT NULL, PERMISSIONS_CLOB CLOB NOT NULL, USER_ADD_ID VARCHAR2(16) NOT NULL, STAMP_ADD_DTIME ...

39. String[] collection mapping hfor PARENT-CHILD relationship !    forum.hibernate.org

Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Hibernate version:3.1 Mapping documents: Employee | / \ / \ Worker Head table : Employee:NAME (PK) Employee:EMAIL Employee:JOINDATE Employee:TEAMHEADNAME Worker:NAME Worker:JOB Worker:DEADLINE Head:NAME Head:BRANCH etc.. Object: Employee get/setName (NAME) get/setEmail get/setJoinDate get/setTeamHeadName (NAME of the head, an Employee) get/setWorkersForHead (string[] of NAMES of Workers, where TEAMHEADNAME=NAME) Similarly for Worker and Head. ...

40. Map>&    forum.hibernate.org

I've been trying to figure out how to do this but i've got nothing so i'm going to ask. Code: @Entity public class DataDictionary { @Id @GeneratedValue(strategy=GenerationType.AUTO) private Long id; @ReallyCrazyMapThatCouldBeReallyCool @IfICouldFigureOutHowToAnnotateIt private Map>> dict; } That ...

41. Mapping a BigInt Id to a String based ObjectID-Class    forum.hibernate.org

Hi, You can write class which implements Serializable interface, Override the methods hashCode and equals methods, create a default constructor and a constructor with a single param as String. Assign this string into instance variable id, And one more method which returns this id; This id can be String and set as private variable. But this works only for varchar or ...

42. Mapping Question... DB char to Java String?    forum.hibernate.org

I have a field (SCHOOL_ID) in the Sybase DB I am working with, it is defined as a char with length of 12. The Pojo that maps to this table defines the member variable schoolId as a String. I am getting the following excpetion: Code: org.springframework.orm.hibernate3.HibernateJdbcException: JDBC exception on Hibernate data access; nested exception is org.hibernate.exception.GenericJDBCException: could not execute query Caused ...

43. how to define: Map> in XML?    forum.hibernate.org

44. Mapping single column of forign table to String[]    forum.hibernate.org

I'm using Hibernate Annotations 3.3.0 and Hibernate Core 3.2.3. I have two very simple tables; a users table and a user_roles table. Each user has one or more user_roles as follows: Code: create table users ( id varchar(6) not null primary key, last_active_date date, .... etc. ... ); create table user_roles ( user_id ...

45. Mapping Map> efficiently    forum.hibernate.org

Hi, is there any way I can get Hibernate to Map: Map> genericSets; to a table like: ID parentId; String mapKey; String setEntry; so we might have rows like this: 1, foo, fooentry1 1, foo, fooentry2 1, bar, barentry1 2, foo, fooentry1 2, foo, fooentry2 This would enable me to write efficient SQL to perform counts on fooentryX etc and link ...

46. Mapping a Map -> Entity.id is null    forum.hibernate.org

47. Mapping a Joined String    forum.hibernate.org

Hi there, I am sort of new to hibernate. I would like to know how to map a certain property. I have a String property in my Person class that is split into a different table. Heres my tables: tbl_Person ======== ID NAME ADDRESS_ID tbl_Address ========= ID ADDRESS This is my class: Class Person String NAME String ADDRESS How would you ...

48. JPA - Map    forum.hibernate.org

49. Persisting a Map>?    forum.hibernate.org

Cold someone please tell me, or point me to an example of a hibernate user type (or collection, whatever) that stores a map of string/sets? I was thinking of writing a custom type, that would be sed as a property, so the ID is stored in the parent table, and a separate table, or tables, is/are used to store the String/Set ...

50. mapping a Map    forum.hibernate.org

Hi folks, I have following code: [code] @Entity public class X { @Id private Long id; @org.hibernate.annotations.CollectionOfElements Map parameter; // ... getter and setter } [/code] which results in 2 separate tables if I persist an object of class X: table x just has an id column and x_parameter table has an id reference column to table x as well ...

51. How can I do a Mapping map    forum.hibernate.org

Map is one type of using Map Collection. Map and Map are others to mention. The above mapping makes use of : String as Key of Map. Object which can be reused hence , as Value of Map. This mapping will make use ...

52. Mapping a sub-collection e.g. Map    forum.hibernate.org

Map> permissions; void addPermission(String user, String permission) { permissions.get(user).add(permission); } void removePermission(String user, String permission) { permissions.get(user).remove(permission); } ...

53. Return String from CHAR(x) column without mapping properties    forum.hibernate.org

Hi everybody, I'm new with Hibernate so this might be a simple question, but I didn't found the answer in the documentation (maybe because I didn't search correctly :) ). I am using Hibernate 3 and DB2 database. I have a table where there are columns defined as CHAR(x). I have created something like this : Code:

54. Simple ?set? mapping for one column type string table    forum.hibernate.org

I've a simple class for Foo: public class Foo { private Integer fooId; private String division; private Context context; } public class Context{ private Integer contextId; private String description; } Now the kicker is that division in Foo is in a table called divisions that have one column in it called division of type string. I dont want to create a ...

55. using a map without a separate entity    forum.hibernate.org

hi there, i've read through the annotations and normal documentation, so forgive me if this is a silly question, but i couldn't find an answer. basically, i have a user object that is working fine, what i'd like to do is add a Map called profile to the user object. is there any way (using annotations) to get hibernate to ...

56. String primary key mapping    forum.hibernate.org

57. Mapping string fields to longtext MySQL columns    forum.hibernate.org

Hi All, My apologies if this question has already been answered, but I have searched the forums and could not find a solution. We have a hibernate mapping file with the definition: Our current underlying database is MySQL 5. What we want is to map this to a MySQL "longtext" type. What is the correct way to do ...

58. Hibernate CLOB to String Mapping    forum.hibernate.org

Newbie Joined: Wed Jan 14, 2009 6:40 am Posts: 1 Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Hibernate version: Hibernate 3.2.4.sp1 (comes with Seam 2.1.0 SP1 Mapping documents: