hibernate - Mapping association with Composite-id -

-

i'm new on hibernate, i've doubt how can represent case:

-->table message: - (pk) msgsender -> foreign key table 'user' - (pk) msgdestination -> foreign key table 'user' - (pk) msgdatesend - msgcontent - isreaded

-->table user -(pk) username - ...

this message.hbm:

<?xml version="1.0"?> <!doctype hibernate-mapping public "-//hibernate/hibernate mapping dtd 3.0//en" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping>     <class name="message" table="message">         <composite-id name="id" class="messageid">             <key-many-to-one name="msgsender" class="user">                 <column name="msgsender"/>             </key-many-to-one>             <key-many-to-one name="msgdestination" class="user">                 <column name="msgdestination"/>             </key-many-to-one>             <key-property name="msgdatesend" type="double" column="msgdatesend"/>         </composite-id>         <property name="msgcontent" type="java.lang.string">             <column name="msgcontent" />         </property>         <property name="isreaded" type="boolean" access="field">             <column name="isreaded" />     </property>     </class> </hibernate-mapping>

and pojo's: class message:

public class message implements serializable { /**  *   */ private static final long serialversionuid = -5319468638732762052l; private messageid id; private string msgcontent; private boolean isreaded;  public message() {     this.id = new msgcontentid(); }  /**  * @return id  */ public messageid getid() {     return id; }  /**  * @param id id set  */ public void setmessageid(messageid mid) {     this.id = mid; }  /**  * @return msgcontent  */ public string getmsgcontent() {     return msgcontent; }  /**  * @param msgcontent  *            msgcontent set  */ public void setmsgcontent(string msgcontent) {     this.msgcontent = msgcontent; }  /**  * @return isreaded  */ public boolean getisreaded() {     return isreaded; }  /**  * @param isreaded  *            isreaded set  */ public void setisreaded(boolean isreaded) {     this.isreaded = isreaded; } }

class messageid:

public class messageid implements serializable{ /**  *   */ private static final long serialversionuid = 1l; user msgsender; user msgdestination; double msgsend;   /**  * @return msgsender  */ public user getmsgsender() {     return msgsender; }  /**  * @param msgsender  *            msgsender set  */ public void setmsgsender(user msgsender) {     this.msgsender = msgsender; }  /**  * @return msgdestination  */ public user getmsgdestination() {     return msgdestination; }  /**  * @param msgdestination  *            msgdestination set  */ public void setmsgdestination(user msgdestination) {     this.msgdestination = msgdestination; }  /**  * @return msgsend  */ public double getmsgsend() {     return msgsend; }  /**  * @param msgsend  *            msgsend set  */ public void setmsgsend(double msgsend) {     this.msgsend = msgsend; } }

with structure hibernate makes no insert, delete, ... me solve problem?

thanks in advance.


Comments

Post a Comment

Popular posts from this blog

ruby - Trying to change last to "x"s to 23 -

-
i have been playing around irb , have string looks this: irb(main):072:0> puts ["[\"4354 5432 5432 xxxxx\", \"6547 6547 8543 xxxxx\", \"2344 6543 6674 xxxxx\", \"2346 6236 7543 xxxxx\", \"1273 5585 5587 xxxxx\"]"] => nil irb(main):073:0> what want gsub last 2 "x" s of each 17 digit combination, 23 . what i've tried far (i've been using rubular): a.gsub(/\d[x]/,"23") <= grabs "x" s i'm close a.gsub(/\w[x{2}]/,"23") <= grabs "x" s grabs two digits each combination. is there easier way i'm not understanding? a.gsub(/\d{4} \d{4} \d{4} xxx\kxx/, '23') \d{4} = 4 digits what \k drop matched far. can use don't replace entire number, still able validate have in desired format.
Read more

jquery - Clone last and append item to closest class -

-
this bare-bones code on page: <div class="list-container"> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> </div> <p><button class="add-list-item">add</button></p> <div class="list-container"> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> </div> <p><button class="add-list-item">add</button></p> <di...
Read more

css - Can I use the :after pseudo-element on an input field? -

-
i trying use :after css pseudo-element on input field, not work. if use span , works ok. <style type="text/css"> .mystyle:after {content:url(smiley.gif);} .mystyle {color:red;} </style> this works (puts smiley after "buu!" , before "some more") <span class="mystyle">buuu!</span>a more this not work - colors somevalue in red, there no smiley. <input class="mystyle" type="text" value="somevalue"> what doing wrong? should use pseudo-selector? note: cannot add span around input , because being generated third-party control. :after , :before not supported in internet explorer 7 , under, on elements. it's not meant used on replaced elements such form elements (inputs) , image elements . in other words it's impossible pure css. however if using jquery can use $(".mystyle").after("add smiley here"); api docs on .after to ...
Read more