1. Hibernate returns invalid results with composite key stackoverflow.comI'm getting the strangest results. I have a class with a composite key. If i do the following query: from LOVEJB l order by l.canonicalId descmy results are not ordered ... |
2. Composite Key with Hibernate stackoverflow.comIn order to generate the next SQL code: |
3. hibernate composite key stackoverflow.comIs it necessary that composite-id should be mapped to class ?? can it be like this ? |
4. hibernate- composite key configuration stackoverflow.comI have two tables with parent/child relation. Child have a table with two columns. Originally Primary key value of child table was same as parent tables Primary key value. I have ... |
5. Hibernate JPA composite key auto generation option stackoverflow.comI am making a project for Group Chat which has following domain objects. What I want is that the orderId of CommentPK get auto incremented with respect to the groupId provided. ... |
6. Hibernate One-to-Many not returning full result set stackoverflow.comI have a hibernate entity (paygrade) with multiple children (paysteps) and am trying to query these children in the app. Unfortunately, I'm only able to retrieve the first record of ... |
7. Hibernate and composite key stackoverflow.comI'm using Hibernate and Oracle database and just got stuck. I'm trying to map this table: |
8. Hibernate 3 Composite key one with GeneratedValue stackoverflow.comI have this two table on the database
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9. Hibernate composite key based on view stackoverflow.comI have a view representing some statistical information with the following columns: |
10. Peoblem while working with hibernate composite key.. bytes.com |
11. Hibernate - Autogenerate composite keys coderanch.comProbably not, because once you go beyond the surrogate key primary key solution, how is Hibernate supposed to figure out what you want. Now if the composite key contains the surrogate key then it would be autogenerated, and the database is the one responsible for making the key/index with the three fields for you. Usually, from a database design standpoint, you ... |
12. how we use composite key in hibernate coderanch.com |
13. Hibernate @JoinColumns modifies the composite key coderanch.comHello! Well, ysee, Im loading my db directly from the hibernate annotations like this: @OneToOne(fetch = FetchType.EAGER, targetEntity = MicroRegiao.class) @JoinColumns( { @JoinColumn(name = "CRPAAAID", referencedColumnName = "CRPAAACODI"), @JoinColumn(name = "CMCRRGID", referencedColumnName = "CMICROCODI")}) public MicroRegiao getMicroRegiao() { return microRegiao; } But the BIG problem is: when it finishes building the main table, I can see that this column is changed. ... |
14. Hibernate: one-to-one Different Composite Keys coderanch.com |
15. Hibernate versioning: Version as part of composite key coderanch.comI've a few existing tables which have an id and version as PK. This is mainly to keep track of all the updates. Following are the problems I faced: 1. version can't be a part of composite-id. 2. if version is outside the composite-id, its not part of the PK and will not let me insert another version (due to PK ... |
16. composite key Hibernate java-forums.org |
17. One-to-many with a composite key forum.hibernate.org |
18. Composite key generation ? forum.hibernate.orgI have a composite key represented as EmbeddedId in hibernate. Inside composite primary key, 1st key is identity key (it means its value is generated by Sybase database) and the 2nd primary key is foreign key. So now my question where should i use @GeneratedValue inside @Entity or @Embeddable ? To be frank, i have tried to use @GeneratedValue at all ... |
19. Advantage using composite key? forum.hibernate.orgIs it better to use a composite primary key than to use a single primary key? I've always avoided it because I though it was easier using a single, but I've seen in several threads that developers are using it so I'm wondering if someone could give me their openion on this topic. In the tables below order_id and line_number is ... |
20. Composite keys forum.hibernate.org |
21. Help with complex composite key forum.hibernate.orgI have 3 tables: table 1 has primary key table1Id, has one to many relationship with table3 table 2 has primary key table2Id, has one to many ralationship with table 3 table 3 has composite primary key table3Id = (table1Id,table2Id) My entities are as follows: public class Table1 { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "table1Id") private Integer table1Id; @OneToMany(mappedBy = ... |
22. Composite key compounded of another composite key forum.hibernate.org@Entity @Table(name="Product_has_Orders_has_ProductOption") @AssociationOverrides({ @AssociationOverride(name = "pk.pho.orders", joinColumns = @JoinColumn(name = "Product_has_Orders_Orders_id")),//Composite key @AssociationOverride(name = "pk.pho.product", joinColumns = @JoinColumn(name = "Product_has_Orders_Product_id")),//Composite key @AssociationOverride(name = "pk.pho.quantityProduct", joinColumns = @JoinColumn(name = "Product_has_Orders_quantityProduct")),//Composite key @AssociationOverride(name = "pk.pho.color", joinColumns = @JoinColumn(name = "Product_has_Orders_color")),//Composite key @AssociationOverride(name = "pk.productOption", joinColumns ... |
23. Why Composite keys are not preffered in hibernate forum.hibernate.org |
24. Strategies for calculating hash codes from composite keys? forum.hibernate.orgAre there any general collision-free best practices to generate hash codes for any (atomic) type composite primary keys? I thought about it for a few hours and came to the conclusion, that a string concatenated by *all* primary key columns would be the only reliable way to do so. Calling Java's hashCode method on that concatenated string should yield a unique ... |
25. Auto key generation for Composite Key forum.hibernate.org |
26. autoincrement Composite Keys forum.hibernate.orgHi Everyone! I have an issue with the composite Key, i know it has been discussed over and over again, but i really need at least a workaround for the problem. I hope sombody here can help me. I have a database where im forced to use Composite Primary keys bcause everything is based on clients, there can be plenty of ... |
27. how to set composite key in jpa+hybernate forum.hibernate.orgNewbie Joined: Tue Nov 02, 2010 10:55 am Posts: 17 Hi I am using jpa+ hybernate orm mapping.Here i am not using annotations.I am using ORM.xml,persistence.xml and application config files. example my ORM.xml file is |
28. Hibernate JPA composite key auto generation option forum.hibernate.orgHi everybody, I am making a project for Group Chat which has following domain objects. What I want is that the orderId of CommentPK get auto incremented with respect to the groupId provided. If I use method like GenerationType.Table, pkColumnName="max_id_name", pkColumnValue="max_comment_id", valueColumnName="max_id" then the orderId will be globally unique which will also limit the maximum number of comments the system supports ... |
29. Many-to-many with composite key forum.hibernate.orgHello My problem is how to configure a many-to-many relation between 2 tables with an associative table with composite keys. Here's my Database schema (simplified) Code: AREA , DOC and ROLE are tables with an ID and a VALUE (ie ID_AREA and VALUE_AREA for example) the Table ROLE_NAME have for PK the 3 PK of the previous tables ID_AREA ID_DOC ... |
30. JPA Composite Key forum.hibernate.orgI have a Table A , Table AB , TABLE B , Table AB has foreign key references to Table A and Table B. There is a One to One relation between Table A and Table AB.and Many to one between Table B and Table AB. My question is if i am saving domain for table B, it is saving data ... |
31. Trouble with composite keys and sets forum.hibernate.orgHi, I'm having trouble getting Hibernate to process my mappings. I have a 2-table schema with a CUSTOMER_ACCOUNTS table keyed on a composite PK (Acount_Number, Site_ID). This is referenced by a CUSTOMER_TELEPHONES table, using the . The DDL is appended to the end of this email. My Customer mapping file looks like this: |
32. Composite key behaviour forum.hibernate.org |
33. Many to Many with composite keys forum.hibernate.orgMy company is converting our application to java, so we are working with an existing database. I have used middlegen to generate the hbm.xml files and hbm2java to generate the java files. I am trying to run a simple query but keep getting a MappingException. I noticed other posts where the poster had a similar issue but none of those posts ... |
34. about composite key forum.hibernate.orgSay I have class C, which is a children class of class P, and the class P contains a composite key, persisted as class compID, where the identifier of compID is a identity key. I have a problem the foreign key of C references P is also composite. I have to first instantiate compID, and assign it to P. After that, ... |
35. Composite key woes forum.hibernate.orgHi all, We are using Hibernate 2.1 with Oracle 9i. The ERD is virtually customer driven so we have little influence on legacy and third party design. That said, Hibernate has proven to be very flexible. We are encountering the following problem though (contrived example): We have the following two reference objects: PTA (account) and Organization: |
36. one-to-one with composite keys forum.hibernate.orgAuthor Message jalchin Post subject: one-to-one with composite keys Posted: Tue Mar 23, 2004 10:24 am Newbie Joined: Mon Mar 08, 2004 2:24 pm Posts: 13 Location: Tampa, FL, USA Does any one know of any issues with one-to-one relationships using composite keys? I have 2 objects (Case and Applicant) using the same composite key object (DocketNumberKey). I am ... |
37. Equality operator (=) doesn't work composite key? forum.hibernate.orgI have a feeling I'm doing something very wrong, this simple query fails to parse: Code: select b2 from Benefit b1, Benefit b2 where b1.benefitType.code = 'H001' and b2 = b1 The error message is "path expression ends in a composite ... |
38. one-to-one composite key forum.hibernate.orgOkay, I've been reading the documentation / forums for two days now and still have not been able to figure out my problem. I wish to map two objects in a one-to-one relationship. Both objects have composite-id's. I am looking for a simpler explanation, or maybe a pointer to some sample code that I can look at. ANY help would be ... |
39. UID generation for composite key forum.hibernate.orgI, i'm using hibernate version 2.1.4, I am currently migrating to hibernate. I'm very intersted in using UID generation feature of hibernate for generating a part of a primary key.( Code: |
40. Please help to get a where clause in a composite key to work forum.hibernate.orgHi, I have a class PnPrscp300 that has two columns for the primary key. A mpiKey and a version number. The version column is a timestamp that is used in order to keep a history of the data. I am trying to do a lookup for a given mpiKey and the latest version number. ie. WHERE VERSION IN (SELECT MAX(VERSION) FROM ... |
41. Changing of composite key forum.hibernate.orgWe can't change bad legacy db design but must implement modification of composite keys. Personally I am not working on this segment, but we cannot make it run (screams "key changed" when updated). Is there something bad in the mapping? This class and table are only many-to-many substitution and because of additional parameters we need to have that class and access ... |
42. composite key forum.hibernate.orgI have 2 tables A and B both with a composite primary key consisting of 2 columns, My question is how would a .hbm.xml file look like for specifying a third table which has a primary key consisting of 3 columns, column 1,2 are a foreign key to table A and column 2 and 3 are a foreign key to table ... |
43. Many-to-one and Composite Keys forum.hibernate.org |
44. How to describe a one-to-many set with composite-key forum.hibernate.orgHi, I'm having some trouble descring a relatively simple one-to-many association in the hbm mapping file. I'm trying to use, following Hibernate in Action's example, the |
45. My understanding of composite key is wrong? forum.hibernate.orgI am reading hibernate documents now. I read something about the composite id "You may use a component as an identifier of an entity class. Your component class must satisfy certain requirements: It must implement java.io.Serializable. It must re-implement equals() and hashCode(), consistently with the database's notion of composite key equality. You can't use an IdentifierGenerator to generate composite keys. Instead ... |
46. Composite key proble, please give hint forum.hibernate.org |
47. Composite key forum.hibernate.orgHello, I'm new with Hibernate. Thats why I have the following question: Is it realy neccessary to have a key-class for an composit-key. If I don't take one, I get an Exception: Composite key has to be serializable. But my composite-key contains two Long and one String. That should be serializable. What am I wrong? Mapping and Class are appended. Thanks. ... |
48. Composite-Key with a Foreing Key forum.hibernate.org |
49. Composite-key hell forum.hibernate.orgNewbie Joined: Mon Jun 20, 2005 11:07 am Posts: 16 Hi everyone I just have a no-sleep nite because of composite-key relationships in hibernate. I have this relationship working fine, that is basically a PurchaseTicket(NotaCompra) and a BuyingItem(ItemCompra), with a Product(Produto). The PurchaseTicket has a one-to-many with the BuyingItem, where the PT has all the priviledges to persist their BuyingItem Objects. ... |
50. Composite key of an |
51. one-to-many composite key. forum.hibernate.org |
52. Regarding Composite key forum.hibernate.org |
53. Composite Key and Generated Code forum.hibernate.orgHibernate 3.x and Tools 3.x alpha 5 Table: Group, PK=groupId (an int) Table: Member, PK=memberId (an int) Table: GroupMember, Pk=groupId, memberId Class Generated: GroupMember with GroupMemberId get/setId(). Also generated: GroupMember.setGroup(...); GroupMember.setMember(...); Per the XML mapping file, GroupMemberId is mapped correctly. However, even if one was to use GroupMember.setGroup(g) and GroupMember.setMember(m), GroupMember.groupMemberId field would still not have been initialized with the groupId ... |
54. Composite Key forum.hibernate.orgHibernate version:3 I have un problem with composites key's Is composite work properly , My Model: article, categorie, art_cat art_cat is a link table article =====art_cat=======categorie When i load 1 article + set 1 or more art_cat no pb If i create a new "article", create 1 new art_cat hibernate send insert into art_cat (art_id, cat_id) values (NULL, 1) there no ... |
55. Composite key forum.hibernate.orgI am having three tables one is jobs which is having primary key is jobid. second is place table. the primary key of this table is placeid. the third table is jobplace. This table contain only two columns jobid and placeid. i created composite key . but i am unable to insert into the third table. Place table is the data ... |
56. Please help: one-to-many, both with composite keys forum.hibernate.orgHi. We are having trouble mapping a one-to-many relationships with both ends' identity being composite keys (components). When trying to load it, we get Hibernate version: 3.1 Mapping documents: |
57. Modifying Composite Key forum.hibernate.orgHi, This is Jagadish. I have a composite key of 3 columns in mysql database table. I am connecting to the database through hibernate. I am trying to update a row in the table after modifying one of the column in the composite key. But i am getting the following exception "Could not synchronize database state with session". Can anyone help ... |
58. Modifying Composite Key forum.hibernate.orgHi, This is Jagadish. I have a composite key of 3 columns in mysql database table. I am connecting to the database through hibernate. I am trying to update a row in the table after modifying one of the column in the composite key. But i am getting the following exception "Could not synchronize database state with session". Can anyone help ... |
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61. Help on design decision Composite keys forum.hibernate.orgHi, We are using hibernate during the design of our project. As the current database model stands, it appears that if natural keys are used as primary keys it would make querying easier.In addition we plan to denormalise some data as we wish to avoid complex joins and reduce time execution of the query. The problem is we need to make ... |
62. Critical decision on usage of composite keys forum.hibernate.orgHi, We are using hibernate during the design of our project. As the current database model stands, it appears that if natural keys are used as primary keys it would make querying easier.In addition we plan to denormalise some data as we wish to avoid complex joins and reduce time execution of the query. The problem is we need to make ... |
63. Composite-key & a newbie forum.hibernate.orgHi to all, I'm a totally newbie to Hibernate and I have a problem! I'm trying to use this mapping: |
64. Hibernate and Composite Key forum.hibernate.orgHi alll We are facing a problem with composite key and one to many assiciations. We have a 2 tables Person and Person_Contacts. Between person and person_contacts there is a one-to-many association. Person_contact table has a composite key made of PersonId and ContactMethod. We have done the following mapping in our Person.hbm.xml |
65. Composite Key forum.hibernate.org |
66. composite keys - aargh! forum.hibernate.orgNeed help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Hibernate version: 3.05 Mapping documents: |
67. discount counts using composite keys forum.hibernate.org[code] @Entity class Sample { @EmbeddedId Key id; } [/code] [code] @Embeddable class Key { someProperty; otherProperty; } [/code] Everything works fine when I do: [code] select count(*) from Sample s [/code] But problems arise with a query like: [code] select count(s) from Sample s [/code] In this latter example, since Sample has a composite key, the generated sql looks like: ... |
68. Composite Key Confusion forum.hibernate.orgA bit confused about mapping a table. I want the table to look like this: table JobFile column waittime column transfertime column transferSpeed column Job references table Job column File (String representing full path to file) primary key(job,file) ---------------------- Code: |
69. help with composite Key forum.hibernate.orgI have two table.. One is header anbd it has two keys which is a composite key and a detail table which has the header compsite key and also the primary key for the child. the composite key needs to be generated automatically without any class. On saving the header, the header and the detail value needs to be stored. Please ... |
70. One To Many with shared composite key forum.hibernate.orgHi All, I have One to Many Association betweeb UserPreferences and UserColumns Tables. PerefrenceId is the primary key of the UserPreferences. And i am using sequence for it. PrefrenceId is the foriegn key used for assocoation. But this PerefrenceId is also shared by the composite key in the UserColumns. When i have to save the UserPrefrerence like below: UserPreferences userPrefrences=new UserPreferences(); ... |
71. Bi-Directional many-to-many with composite keys forum.hibernate.orgI just cant seem to come up with a valid mapping. Code: |
72. Composite mutating key forum.hibernate.orgHi, Both the manual and Hibernate in Action discourages use of composite keys but I'm stuck with a legacy schema that looks simplified like a classic Order: primary key (customer, ordernumber) and OrderRow: primary key (customer, ordernumber, rownumber) and I've mapped them OK as a bidirectional one-to-many, implemented hashCode and equals() etc. The order rows are mapped to a List. The ... |
73. Many-To-Many W/ a Composite Key forum.hibernate.orgBeginner Joined: Thu Dec 08, 2005 12:18 pm Posts: 21 Location: Birmingham, Alabama I am hoping someone can guide me through this issue. I have solved this problem earlier using JPA, but I now must use Hibernate only. This is the annotation I used in JPA. Code: @ManyToMany(cascade={CascadeType.ALL}) @JoinTable(name="DOCUMENT_COLLECTION", ... |
74. composite key forum.hibernate.orgHi All, I am new to Hiberante. I am not very clear on how to configure a table with a composite key. I am using apache derby. But this is a very basic question. I read the documentation and worked on it. I am still not there . I see a "Could not parse mapping document from resource xyz.hbm.xml." My question ... |
75. Hibernate Composite Key forum.hibernate.orgHi All, I am facing problem with compound key implementation. Please solve my problem. I have 3 tables Table Columns Student: studentID, ..... Class : classID,.... Names: studentID,classID,.... Now My problem is In names table I doesnt have any primary key and having only foreign keys. Now I have to create an composite key using these foreign key values. It would ... |
76. Composite Keys - Best way to do this in Hibernate? forum.hibernate.orgAssuming that you have a class Link/LinkId and a class Figure/FigureId...probably something like: Code: @Embeddable public class FigureId implements java.io.Serializable { private Integer figureId; private String gender; @Column(name="figure_id"...) public Integer getFigureId() ... |
77. How to use @OrderBy with a composite key forum.hibernate.org |
78. createNamedQuery using part of composite key. forum.hibernate.orgHi, I am trying to create a simple namedQuery where the qualifier is a part of a composite key using JPA. Here's how I defined the primary key class (composite key): public class LocationGroupKey implements Serializable { public long childLocationId; public long parentLocationId; public LocationGroupKey() { } //... the rest of the code omitted for brevity. Here's how I defined the ... |
79. Hibernate: one-to-one Different Composite Keys forum.hibernate.orghave you tried some thing like this:- Code: |
80. Hibernate Composite Key forum.hibernate.org |
81. one-to-many with composite key forum.hibernate.orgHello, I was wondering how you would write the mapping file for a one-to-many with a copmosite key. I have the following mapping file... |
82. Composite Key in Hibernate forums.oracle.com |