1. Hibernate and Child Objects (add versus clear) stackoverflow.comLets say I have domain model with Automobile and Wheels. Wheels is a List of Wheels Wheels has a many-to-one relationship to Automobile. If I get an object back from Hibernate and it ... |
2. New to Object Relational Mapping stackoverflow.comI went ahead to buy a book on Hibernate. I wanted to learn on what Hibernate is and what is Object Relational Mapping in general. Harnessing Hibernate has good topics on ... |
3. Hibernate - beyond Object/Relational Mapping? stackoverflow.comLooking at http://www.hibernate.org/ it has this introduction text: Historically, Hibernate facilitated the storage and retrieval of Java domain objects via Object/Relational Mapping. Today, Hibernate ... |
4. Is it possible to map objects to part of an existing table? stackoverflow.comIs it possible to map an object to only part of an existing table in a database? For example: |
5. hibernate mapping for Object stackoverflow.comID.hbm.xml ? ... |
6. Question about mapping object/relational stackoverflow.comI have a database that the relation beatween the table is not specified ,I mean foreign keys are not mentioned clearly,I have understand them by observing the database when Ihave ... |
7. Hibernate: many-to-many object mappings coderanch.comHello all: I am just getting started with Hibernate 3.2. I want to know what are the advantages and the disadvantages of enabling many-to-many relationship between objects? For example: If I want to map a relational database where the tables are conneceted to each other by a foriegn key. Using Hibernate, one have the option to make the bean reference each ... |
8. Hibernate: object presistent mapping question coderanch.comI close my sessions and the data is still available. Properties are all available as they are not lazy loaded or proxied. But for things which are lazy loaded such as collections, and for references to other persistent objects which will be proxied by default you need to load the collection or initialize the proxy. Hibernate.initialize(object); will make the object available ... |
9. How does Hibernate get child objects coderanch.comHi , I have very recently started using Hibernate JPA and have some basic doubts. How does hibernate get child records . This is my understanding , please correct me if am wrong. For Eg , parent has two child . if I query parent , I get the childs also if fetchType = Eager. Its true for vice versa also. ... |
10. Hibernate - Simple mapping to object coderanch.com |
11. Hibernate take care of the mapping from result sets to objects coderanch.com |
12. Mapping objects history wih Hibernate coderanch.comHi everyone I am developing application with Hibernate and I have some difrent objects where each of them has a property History. This property in each object is a Set of History objects. I would like to map this relation with hibernate and I was doing it like this: This is how object History looks in DB: History historyId | thema ... |
13. Would like advise mapping Hibernate objects coderanch.comHi all, Would like guidance mapping objects in Hibernate I keep getting Error : org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1 I have Table "persons" Person is related to other persons through relation table (relations) PersonHib - holds 2 collection of "relation" objects - children, parents (need this connection in order for ... |
14. Not able to get mapped object Set in hibernate coderanch.comHello, Here is my mapping code |
15. How to map java.lang.Object? forum.hibernate.orgTo make a long story short, I need to be able to store what my company calls a "parameter" to the database. A parameter consists of a parameter ID to tell us what field we're looking at and a value. The value can be of several types, including Integer, String, Double, or Boolean. In our code we use the Parameter ID ... |
16. Initialize the Child object ? forum.hibernate.orgpublic class ClassA { private String id1; private String status; private Set |
17. object handling using mapping tables forum.hibernate.orgHi, I just started using Hibernate with JPA 2 but I'm still having some problems understanding the fundamentals. Let's say I have 2 Classes: @Entity class User @Entity class Permission I connect the two via a mapping-table "user_permission" which references the user_id and permission_id from the main-tables. Whenever I want to delete a Permission from a User I cannot delete the ... |
18. Hibernate and JAX-WS - How to disconnect an object + child? forum.hibernate.orgHi I'm using a combination of JAX-WS and Hibernate. It works quite well,but I can't quite handle the session correctly. The problem is, if I close the session, before I exit the WebService method, as I should, Hibernate throws an Exception when JAX-WS tries to serialize the Object + its children. The object has been read from the database, but the ... |
19. Map object that belongs to two other objects (ob forum.hibernate.orgI'm having a bit of trouble mapping the following: Code: public class Operation { private Integer id; private String name; private List |
20. How map 'linking table' into objects forum.hibernate.org |
21. Need clarity on Object Mapping forum.hibernate.orgHi, I found there are 4 ways to design application around relational model in ORM. 1) Light object mapping 2) Medium object mapping 3) Full object mapping 4) Pure relational I am not sure about their implementation. Can anyone please point me to any URL/documentation which explains the difference between the above 4 may be with an example. Thanks a lot. ... |
22. Mapping class objects to separate tables forum.hibernate.orgI hope I can explain this problem clearly. I have a class Foo which contains 2 objects of type Bar. I have two mapping files, one for Foo and one for Bar. The database tables represent a Foo object, and a Bar object. The Foo db table has no reference to the Bars it owns. The Bar table has a FK ... |
23. Mapping a children objects from the same table forum.hibernate.orgI am trying to map an existing table which looks somewhat like this: EXTENSION_TABLE ( ID NUMBER, HEADER VARCHAR2(255), CONTENT VARCHAR2(2000), SORT_ORDER NUMBER, PARENT_KEY NUMBER ) The bean that I created looks like this: public class ExtensionBean { private Integer id; private String header; private String content; private List |
24. How to make a referance to a single other mapped object? forum.hibernate.orgHiya, I've started using Hibernate recently, and think it's great. I'm using it for maps and sets and whatnot, and don't have any problems with that. I have also used the special one-to-one relationship, where it is appropriate. However, there is something that I am trying to do that seems like it is totally trivial, but I can't figure out how ... |
25. how to retrieval object from |
26. Mapping the composition of two domain objects to a scalar forum.hibernate.orgI need to create a table that is similar to a many-to-many mapping for "resources" and "systems". Each resource will be mapped to 0 or more systems on which it can run. Each system will be mapped to 0 or more resources that are configured to run on it. The twist to this is that I would like to map the ... |
27. can hibernate map from ORDBMS object? forum.hibernate.orgfor exampe: oracle DBMS can create object type like this create type Student as Object ( varchar2(6) idStudent, varchar2(10 name, char(1) sex ) then oracle can create a table like this: create table stu of Student ( Student s) can hibernate map this table to Java class StudentCls? class StudentCls { string id; string name; char sex; ....... } |
28. Mapping all domain objects to one table forum.hibernate.orgHallo. I'm currently working with an legacy application which is a little specific. It is all "Object Orientet" but it uses ONE data base table to store ALL domain objects poperties. This table has the following structrure: PROPERTIES( OBJECT_ID, PROPERTY_NAME, PROPERTY_VALUE ) There is also table OBJECTS ( OBJECT_ID, CLASS ) which holds information about objects and their classes. My question ... |
29. Mapping: Create Objects from Factory forum.hibernate.org |
30. Mapping objects to different sets of tables forum.hibernate.orgI have a group of tables that persist customers' data. At certain points in my application I need to take a snapshot of that data and insert it into an identical but distinct table structure which represents the customer's history trace. In other words, I have a bunch of tables such as CUSTOMER, APPLICATION, etc. related together and I need the ... |
31. Problem with mapping of one table to multiple objects? forum.hibernate.orgHi.. Is it possible to map multiple objects to one table? I tried it and it gave me wrong objects! :-/ I have 1 table, which is modelled by 2 different objects. Reason for this is that the 2nd object hold large BLOB data, so I'd like to keep them separate for performance reasons. My XML is something like this |
32. Map one object from two tables forum.hibernate.orgHibernate Version: 2.1 SITUATION: I need mapping and/or query ideas for the following scenario. DB TABLES: ------------------------------------ Product (product_id text) ProductName ( product_name_id int product_id int locale text ) DESIRED OBJECT: ------------------------------------ class Product { private ... productID; private ... productName; // the name for a given locale ... getters /setters ... } MAPPING: ------------------------------------ How should I map the productName ... |
33. Mapping Many to Many with an Object and Convenience Methods forum.hibernate.orgNewbie Joined: Tue Mar 30, 2004 4:52 pm Posts: 1 I am trying to map a many-to-many relationship using a mapping object. The object names are: Account Group AccountGroupAssignment I need the mapping object because there are properties I need to store that are related to the account's assignment to the group. I can create a getGroupAssociations() function on both the ... |
34. mapping to a Map inside an object forum.hibernate.orgVery new to hibernate and interested in using it. Does hibernate support mapping an object where the data is not stored in individual fields but rather are stored in a Map. As an example, consider the class Foo public class Foo { private Map _map = new Hashtable(); public Serializable getValue(Object key) { return (Serializable)_map.get(key); } public void setValue(Object key, Serializable ... |
35. Business and derived objects mapping forum.hibernate.orgI have the following model : class hibernateobject { ..... } class businessobject extends hibernateobject { ..... } class businessobjectSpecific extends businessobject { ..... } For the 3 classes, I need the 3 same mappings files (except for the class name, i set polymorphism=explicit). I can't use the subclass clause because I don't have a discriminator and for our application we ... |
36. hibernate result mapping to Transfer Object forum.hibernate.orghi, can someone help me, I need to directly map the hibernate result wiht my Transfer Object (or) Business Object.. Is there a way , currently i am looping through the hibernate class , reterving data and them placing them in my Transfer Object , to be send to my View......will i be able to directly map the hibernate result to ... |
37. Can I map an object to an old table? forum.hibernate.orgI want to use Hibernate with previously created java classes and database tables, so I assume (I am a beginer) I must create a mapping including those properties of the class I want to include in the database table. The problem is when I try to save a new object Hibernate deletes the old table and creates a new one, instead ... |
38. create new object mapping forum.hibernate.org |
39. Can I map one object into two tables? forum.hibernate.orgI have a POJO class that will map to two tables, I have created one mapping document. Let's say user.hbm.xml. The database has user and secretinfo table. The secretinfo will store some secret information. The user object will map the user into user table only. Where I can the mapping to map the user's secret info to table secretinfo? ... |
40. Object related to itself, how to map that forum.hibernate.orgI have an "Operation" object which needs to have a list of other "Operation" objects related. Course on the DB i need a relation (some like "LinkedOperations") table with, say id1 and id2 columns, but not sure how to map that on Hibernate (if possible). As the java object it's easy to think on an Operation object with a List of ... |
41. How to map objects with T1.a = T2.b or (T1.a = T2.b + 1)? forum.hibernate.org |
42. General Hibernate question:mapping multiple objects & ta forum.hibernate.orgHi I'm very new to Hibernate and I have successfully created a few mock apps whereby I persist one Java object to a table in my database. I'm just wondering whether the following are possible.... - Can you map one Java object to more than one table in the database? If so, what steps need to be done? - Can you ... |
43. How do I copy children of an object to another similar obj forum.hibernate.orgHow do I copy children of an object to another similar obj? i.e: A - B \ C - D -E -G \ \ F H 1) copy to I so children of I look like children of A with just with different parent key of I-> I - B \ C - D -E -G \ \ F H 2) ... |
44. Mapping same object to two different tables forum.hibernate.orgHi, I am faced with a problem where i have to persist the same object to two different tables at different times. More specifically, I have an object that needs to be put into a table, say RECORD. I have another table RECORD_HISTORY which has the same columns as the RECORD table. My business requirement needs me to move the record ... |
45. must "one" side of many-to-one be a mapped object forum.hibernate.org |
46. Old issue asked again: 'Map one object from two tables' forum.hibernate.orgi came up to the same internationalisation with hibernate problem as others did. 2 tables: Code: category ---------- id ... pk, seq code ... string parent .. category label ------ id .... pk, seq cat_id ... int locale ... string text .... string why would i want it like that? so i can have generated pk for each label and for ... |
47. One-to-one domain object mapping forum.hibernate.org |
48. Mapping object to two different tables forum.hibernate.orgI am a new hibernate user retro-fitting hibernate into an existing system. This is my problem: ClassA has a one to many relationship with Something where Something is stored in a table called ClassASomethings. ClassB has a one to many relationship with Something where Something is stored in a table called ClassBSomethings. Since this is an existing system we would prefer ... |
49. Problems with mapping Objects forum.hibernate.orgEstou tentando executar uma query HQL mas a inteligencia do hibernate atrapalha um pouco. Imagine a seguinte estrutura de classes: A.getId_A() A.getName() A.getB() >> returna a classe B B.getId_B() B.getName() Se eu executo uma query no formato HQL: Select A.Id_A, A.Name, A.B.Id_B , A.B.Name, from A,B where B.Id_B = A.B.Id_B(+) Eu queria que hibernate gerasse o seguinte SQL: TA >> Tabela ... |
50. newbie: recommended practice for locating child object forum.hibernate.orgDavid, david wrote: Don't forget the power of the querying abilities of hibernate. Write a simple HQL query to find the child you are after. I don't dispute the power of Hibernate and it certainly has it's place. What I was after was more of a response to a 'poll' sort of thing where people state which method they use. Again, ... |
51. Single-object to multiple-table mapping forum.hibernate.org |
52. Mapping without creating objects for each table? forum.hibernate.orgThanks for the response. I do not think I can use |
53. Sending Mapped Objects via JMS in ObjectMessages forum.hibernate.orgHello, I've looked high and low, and I can't find anyone talking about this problem. I've got an application that needs to send objects mapped by Hibernate attached within ObjectMessages. I don't have any problems with simple objects, but it doesn't work for objects that have collections. I get a java.io.IoException error on the hibernet Set object. I'm assuming it has ... |
54. Does evict() method, evict child objects? forum.hibernate.orgI have a object which has second level cache enabled. This class has a 'Set' of child objects which also have second level cache enabled. Now, if i issue a evict() on the parent object, will the child objects also be evicted from cache? Following is the hbm mappings: Code: |
55. one object mapping to more than one table forum.hibernate.orgI can't find an solution to your very strange problem. You could map Claim to workorder and join in customerChangeDate, then add a one-to-one to Loan, which maps to claim and joins in claimDate, but I don't know if that would work. It's a pity |
56. Map 2Tables to 2 Objects forum.hibernate.orgHave you even tried any of the examples ? This is about as simple as it gets. Why don't you give it a try on your own and if you encounter problems, show your work and someone will help you fix it. If you want someone to do your work for you, you should hire someone. ;-) |
57. Map one object to more than one table forum.hibernate.orgHi, I wonder if it is possible to map one object to more than one database tables in Hibernate. Problem is, there are 3 tables and they correspond to one object, differ in one or two column(s). Record from table A can be moved to table B and vice-versa (subject to some condition/event). Record from table A can be moved to ... |
58. Single object multiple mappings forum.hibernate.orgAs far as I can see, there can't be an easy solution for this. Even if Hibernate mapping files allowed you to describe two different mappings, there are so many situations in which Hibernate, explicitly or implicitly, has to write objects of that class -- so how should it decide which table to use? Your requirement to first use table1, then ... |
59. Does hibernate force one object to one table mapping? forum.hibernate.org |
60. How do you map an Object? forum.hibernate.orgi'm a total newbie but i've managed to puzzle out (or Google) the answer to most questions i've had in the last two months. But this one has me stumped i have a class that has a property of type Object. Is there any way to map this or do i need to rewrite my class? Having searched for this already, ... |
61. Mapping for One Object in Multiple tables forum.hibernate.org |
62. Problems mapping with a java.lang.Object forum.hibernate.orgI've solved my problem temporarily by making a simple object wrapper class, but I've come across this problem that seems a little odd: I have a class with a property of type java.lang.Object, I get the following exception: org.hibernate.MappingException: property mapping has wrong number of columns: com.declivis.asc.dao.GenericStatus.objectWrapper type: object Has anyone encountered this? I realize my workaround isn't really that painful, ... |
63. One Object to Multiple Table Mapping forum.hibernate.orgI have a single object with two items in it. I want to write the contents of this object to two differant tables using hibernate, where each table will take a single item from the object. A simple example is given below Object contains name, address and the two tables are name_table address_table where name will be written to name_table, address ... |
64. mapping an object forum.hibernate.orgI have an object. When I edit the object I create a similar new object with the changes. I have to save this new object and get the Id and set that in the former object and save it. How can I do this? What do I need to in the hbm.xml file? |
65. Different mappings for reading and writing same object forum.hibernate.orgWe need to create an object from data in 2 different tables. We are using a join tag and this works correctly. However, we would like to be able to write some of the attributes from the object back to only one of the tables, since only one of the tables contains dynamic data. We were trying to do this using ... |
66. Problem while using Map Object in Hibernate forum.hibernate.orgHi All, I am facing problem while using Map Object in Hibernate. I have following 3 tables: mysql> desc DefaultPropertyAV; +--------------------------+------------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +--------------------------+------------------+------+-----+---------+----------------+ | defaultPropertyAVKey | int(11) unsigned | NO | PRI | | auto_increment | | userKey | int(11) unsigned | NO | MUL | | | | ... |
67. Object is not mapped : java.lang.IndexOutOfBoundsException forum.hibernate.org |
68. Mapping a single object to two tables forum.hibernate.orgThanks Ramnathan for your support. I have tried the same as you suggested by I have a requirement where my activealarm has to be converted into historicalalarm and then the historicalalarm has to be inserted into the historicalalarm table using spring HibernateTemplate. When I do public void addAlarms(Alarm alarm) { HistoricalAlarm halarm = (HistoricalAlarm)alarm; getHibernateTemplate().save(halarm); } I get a classcastexception. Exception ... |
69. EXISTS for child objects forum.hibernate.orgfrom Parent p inner join fetch p.children c where EXISTS ( From Child c2 where c.parent = c2.parent ... |
70. Mapping two tables to one object forum.hibernate.org |
71. How to map three objects into one table forum.hibernate.orgHibernate version: 3 We have three important objects that are very frequently read, but only infrequently linked to each other. IncomingCar <0..1-1> Repair <1-0..1> OutgoingCar IncomingCar and OutgoingCar are both subtypes of Car and share a bunch of properties. The Repair object works as a join-table between IncomingCar and OutgoingCar. Occasionally the OutgoingCar changes after the Repair link has already been ... |
72. Can I Map Same Table to 2 Objects? Here's why... forum.hibernate.orgHibernate version: 3.1.1 I want to control in different cases whether Hibernate lazy loads a List member of an object or not. So can't do it in mapping.xml because it only configures it for the object and not for different transactions. Can I map two similar objects to the same table. Both have same field properties and both have a List ... |
73. How to map an object containing a map as a map forum.hibernate.org |
74. Map child object using AliasToBeanResultTransformer forum.hibernate.orgI have got a query in which I am using projections and using AliasToBeanResultTransformer to map these properties to an Object. The object has child object (many-to-one relationship) and I also want to use the property of this objet in projection. Is it possible for me to use AliasToBeanResultTransformer to map this property directly to child object? e.g. JournalLine has one-to-Many ... |
75. Ability to specify a child object within and outside.. forum.hibernate.orgWe reference a set of child objects within the parent definition using a set relationship and define the child class separately. But, if the child class has some additional properties that are part of its primary key (in addition to the parent's Id which is specified as a key in the set), how do we specify this information in the child ... |
76. How to map with object aggregation in the absense of databas forum.hibernate.orgHi, I want to know how to map aggregated mapping of multiple objects (detils below) in the absense of database-identity key. (I know hibernate allows in mapping multiple objects to a single row - where there is a primary key) Aggregation: 1Report --has-- 1..* Company 1Company --has-- 1..* Currency This is only fetching, no object manipulation required Thanks Prem Data From ... |
77. Retrieving too many objects in a many-to-many mapping forum.hibernate.orgI am using Hibernate v 3.2.2 and jdk 1.5. I am trying to create a one-to-many mapping that uses a join table. I have definied a uni-directional mapping where you can traverse from a Batch to it's Loans. When I create a query using "SELECT COUNT(b.loans.id) FROM Batch AS b WHERE b.id = :id" I get the correct number back (3). ... |
78. Mapping Clob to UserDefined Object forum.hibernate.orgHi All, We are facing the following exception when we try to fetch the information from the database. Please see below for complete stack trace. Note: 1) Here we have mapped a CLOB column of Database to user defined object (template). 2) Required behaviour : Hibernate should be able to populate the user defined object (template) automatically from the CLOB data. ... |
79. Samples showing how to handle objects mapped with |
80. How to map a postgres bitarray to a Hibernate Object forum.hibernate.org |
81. Dependency Object mapping forum.hibernate.orgHi I am using hibernate3 to develop my application and i have a situation where i have the dependency objects to be saved My Code is as follows package org.un.desa.cims.iCso; import java.util.Set; public class MyTest { private int id; private String myName; private MyTestInfo myTestInfo; private Set |
82. Can a object copponent map to itself? forum.hibernate.org |
83. Many-to-many mapping with 2 objects of same class forum.hibernate.orgpublic class Apple { private Set |
84. Mapping 2 objects from the same table. 1 obj consists second forum.hibernate.org |
85. Creating tables without mapping objects forum.hibernate.orgHi, I new in hibernate, and i have searched a way for create a Table without mapping an object, i need to create tables programaticaly (dynamically) just from a Dialect.I found this code, but here the code creates a mapping to an object (Objective.class), and i dont want any objects for my tables. code: [b]public void create(){ Dialect dialect = Dialect.getDialect(); ... |
86. Problem for Convert One child Object to the other forum.hibernate.orgWell, here's an idea. Why not load the record first. That gives you the object. Then, evict the object, so it is detached. Then, delete the object, so it is gone. Then, save that object to the new table. That way, all the same data gets moved around with any of the data getting lost. So, that's a first iteration. How ... |
87. Overload hibernate mapped object forum.hibernate.orgHi, here is my problem : I have a core project and this project can have multiple modules for the moment I have one applicationContext for each modules which contains the module's mappingResources. My problem is that in the core I have a user object but inside a module an object can have a relationship with the user object and therefore ... |
88. Code/decode Table to Object Mapping Best Practice forum.hibernate.orgIs there a best practice for mapping objects to tables for storing code/decode values? For example, I have a legacy table for Code and CodeGroup: CODE_TAB id numeric code varchar decode varchar order numeric codegroup numeric CODEGROUP_TAB id numeric name varchar type varchar Stored in these tables are your common "lookup table" values that populate UI dropdowns and the like. e.g. ... |
89. Code/decode Table to Object Mapping Best Practice forum.hibernate.orgIs there a best practice for mapping objects to tables for storing code/decode values? For example, I have a legacy table for Code and CodeGroup: CODE_TAB id numeric code varchar decode varchar order numeric codegroup numeric CODEGROUP_TAB id numeric name varchar type varchar Stored in these tables are your common "lookup table" values that populate UI dropdowns and the like. e.g. ... |
90. Many To One Mapping on the Same Table/Object forum.hibernate.orgHi All, New to the forums....been trying to solve this for some time and it's starting to grind me down. I need to Create a Many-to-One relationship on the Same Table. The context is I have a Trade Object that can be both a parent or a child in a relationship. Code: public class Trade{ private ... |
91. Many-to-one, moving child objects, ObjectDeletedException. forum.hibernate.orghi, i have a many-to-one association of A to B with inverse=true set on the many side (it's a Set). in my Java code, A contains a Set and B contains a reference to an A. the cascade setting on the set is cascade="save-update,delete,delete-orphan". the mappings are included below ("ForumCategory" is the A and "Forum" is the B). now in the ... |
92. hibernate mapping without using Set object forum.hibernate.orgHi all i have articles and comments tables article comments will be maintained in coments table with thread_code of article(the commments may be from 0 to 1000) my hibernate mapping file contains Article.hbm.xml |