spring - hibernate @onetomany relationship updates instead of insert during save -

-

please me figure out. i've tried many combinations nothing seems work. i'm trying implement hibernate mapping using annotations during saving of parent object , children noticed update statement being called instead of insert statement.

i have 2 classes have one-to-many relationship each other.

these class' mappings: receipt has one-to-many collections

@entity public class receipt implements serializable {      @id     @generatedvalue(strategy=generationtype.auto)     private long id;     @onetomany     @joincolumn(name="receiptid")     private list<collection> collections;      //setters, getters }   @entity public class collection implements serializable{      @id     @generatedvalue(strategy=generationtype.auto)     private long id;     @manytoone     @joincolumn(name="receiptid", insertable=false, updatable=false)     private receipt receipt;      //setters getters }

the problem during saving receipt like:

receipt r = new receipt(); list<collection> cols = new arraylist<collection>(); cols.add(new collection()); r.setcollections(cols); gethibernatetemplate().save(r);

it generates error:

hibernate: insert receipt (userid, datecreated, payor, receiptdate, receiptnumber, total) values (?, ?, ?, ?, ?, ?) hibernate: update collection set receiptid=? id=? nov 15, 2010 8:46:00 pm org.hibernate.jdbc.batchingbatcher doexecutebatch severe: exception executing batch:  org.hibernate.stalestateexception: batch update returned unexpected row count update [0]; actual row count: 0; expected: 1     @ org.hibernate.jdbc.expectations$basicexpectation.checkbatched(expectations.java:85)     @ org.hibernate.jdbc.expectations$basicexpectation.verifyoutcome(expectations.java:70)     @ org.hibernate.jdbc.batchingbatcher.checkrowcounts(batchingbatcher.java:90)     @ org.hibernate.jdbc.batchingbatcher.doexecutebatch(batchingbatcher.java:70)     @ org.hibernate.jdbc.abstractbatcher.executebatch(abstractbatcher.java:268)     @ org.hibernate.engine.actionqueue.executeactions(actionqueue.java:266)     @ org.hibernate.engine.actionqueue.executeactions(actionqueue.java:171)     @ org.hibernate.event.def.abstractflushingeventlistener.performexecutions(abstractflushingeventlistener.java:321)     @ org.hibernate.event.def.defaultflusheventlistener.onflush(defaultflusheventlistener.java:50)     @ org.hibernate.impl.sessionimpl.flush(sessionimpl.java:1027)     @ org.springframework.orm.hibernate3.hibernatetemplate$28.doinhibernate(hibernatetemplate.java:883)     @ org.springframework.orm.hibernate3.hibernatetemplate.doexecute(hibernatetemplate.java:406)     @ org.springframework.orm.hibernate3.hibernatetemplate.executewithnativesession(hibernatetemplate.java:374)     @ org.springframework.orm.hibernate3.hibernatetemplate.flush(hibernatetemplate.java:881)     @ com.coa.acctreports.daoimp.accountingreportsimpl.update(accountingreportsimpl.java:52)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:39)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:25)     @ java.lang.reflect.method.invoke(method.java:597)     @ org.springframework.aop.support.aoputils.invokejoinpointusingreflection(aoputils.java:309)     @ org.springframework.aop.framework.reflectivemethodinvocation.invokejoinpoint(reflectivemethodinvocation.java:183)     @ org.springframework.aop.framework.reflectivemethodinvocation.proceed(reflectivemethodinvocation.java:150)     @ org.springframework.transaction.interceptor.transactioninterceptor.invoke(transactioninterceptor.java:110)     @ org.springframework.aop.framework.reflectivemethodinvocation.proceed(reflectivemethodinvocation.java:172)     @ org.springframework.aop.framework.jdkdynamicaopproxy.invoke(jdkdynamicaopproxy.java:202)

in case of bidirectional many-to-one/one-to-many relationship, "many" side should owning side (and @joincolumn specified @ owning side), whereas "one" side should have mappedby poiniting owning side. in case need enable cascading of save operation:

@entity  public class receipt implements serializable {      @onetomany(cascade = cascadetype.all, mappedby = "receipt")     private list<collection> collections;      ... }        @entity  public class collection implements serializable {      @manytoone      @joincolumn(name="receiptid")      private receipt receipt;      ... }

see also:


Comments

Post a Comment

Popular posts from this blog

android - Spacing between the stars of a rating bar? -

-
ho can set spacing beween stars? thats ratingbar: ratingbar = (ratingbar) inflater.inflate(r.layout.ratingbar, null); ratingbar.setlayoutparams(new layoutparams(layoutparams.wrap_content, layoutparams.wrap_content)); the layout: <?xml version="1.0" encoding="utf-8"?> <ratingbar xmlns:android="http://schemas.android.com/apk/res/android" style="@style/mystyle" android:layout_alignparentright="true" android:layout_height="19dp" android:layout_width="wrap_content" android:numstars="5"> </ratingbar> the style: <style name="mystyle" parent="@android:style/widget.ratingbar"> <item name="android:progressdrawable">@drawable/android_r2_ratingstar_yellow</item> <item name="android:indeterminatedrawable">@drawable/android_r2_ratingstar_grey</item> </style> thanks, cheers you have ...
Read more

html - Instapaper-like algorithm -

-
does of algorithm extracts contents webpage? instapaper ? there 2 steps instapaper does: find main content block on page (excluding headers, footers, menus etc) from content block extract , format text to find content block (typically html block element, div containing key page text content) instapaper uses algorithm 1 used readability . can @ source of readability.js see what's going on, @ core tries find area on page highest text/link ratio, although has other simple scoring metrics (e.g. off top of head, things ratio of text commas, para elements etc) go heuristics. once have identified root node element, relevant content, you'll need format it, if want can pull node element containing text out of source document , insert yours, in reality you'll want remove existing styles , apply own, standard , feel. if want output nice text-only can use jericho's renderer . update1 : should mention else instapaper - follow 'pagination' links (...
Read more

c# - How to execute a particular part of code asynchronously in a class -

-
i creating speech recognition engine that's going respond user commands.i have created button enable , disable speech recognition per user convenience.i have used dispose() of speech engine disable speech recoginition.here code private void button1_click(object sender, routedeventargs e) { engineon = !engineon; if (engineon) { speechengine = speech.createspeechengine(); //speech class creates , returns new speech engine. speechengine.audiolevelupdated += new eventhandler<audiolevelupdatedeventargs>(speechengine_audiolevelupdated); // use system's default microphone speechengine.setinputtodefaultaudiodevice(); speechengine.loadgrammar(new dictationgrammar()); // start listening speechengine.recognizeasync(recognizemode.multiple); } else { speechclass.myengine.dispose(); } } but disposal of speech obj...
Read more