java - Bidirectional OneToMany @LazyCollection(LazyCollectionOption.EXTRA) -

i have problem lazycollection.

guy on site lazy collection tutorial says

hibernate not materialize collection elements when accessing collection , inserting collection (at least in example of winery , wine onetomany relationship mapping)

but doesn't working me.

here entities:

import javax.persistence.*; import javax.persistence.entity; import javax.persistence.table; import java.util.arraylist; import java.util.date; import java.util.list;  @entity @table(name="document_generated") public class documentdomaintogenerateimpl extends domainobjectimpl<documentdomaintogenerate, integer> implements documentdomaintogenerate{  /**  *   */ private static final long serialversionuid = -1297116626347796196l; private string identificationkey; private identification identification; private string documentgroup; private string documenttype; private server server; private int statusorder = 2; private int numberofattempt; private auditdata auditdata; private date documentissuancedate; private date creationdate; private documentstatus documentcurrentstate; private list<documentgeneratedhistorystatus> documentgeneratedhistorystatuslist = new arraylist<documentgeneratedhistorystatus>(4);    public string getidentificationkey() {     return identificationkey; }  public void setidentificationkey(string identificationkey) {     this.identificationkey = identificationkey; }  @embedded @target(auditdataimpl.class) public auditdata getauditdata() {     return auditdata; }  public void setauditdata(auditdata auditdata) {     this.auditdata = auditdata; }  @embedded @target(identificationimpl.class) @attributeoverrides({     @attributeoverride(name = "businessid", column = @column(name = "business_id_doc")),     @attributeoverride(name = "businessidcontextname", column = @column(name = "business_id_ctx_doc")),     @attributeoverride(name = "identificationid", column = @column(name = "id_doc")),     @attributeoverride(name = "identificationidcontextname", column = @column(name = "id_ctx_name_doc")) }) public identification getidentification() {     return identification; } public void setidentification(identification identification) {     this.identification = identification; } public int getstatusorder() {     return statusorder; } public void setstatusorder(int statusorder) {     this.statusorder = statusorder; }  public string getdocumentgroup() {     return documentgroup; } public void setdocumentgroup(string documentgroup) {     this.documentgroup = documentgroup; } public string getdocumenttype() {     return documenttype; } public void setdocumenttype(string documenttype) {     this.documenttype = documenttype; } public int getnumberofattempt() {     return numberofattempt; } public void setnumberofattempt(int numberofattempt) {     this.numberofattempt = numberofattempt; } @embedded @target(serverimpl.class) public server getserver() {     return server; } public void setserver(server server) {     this.server = server; } @embedded @target(documentstatusimpl.class) public documentstatus getdocumentcurrentstate() {     return documentcurrentstate; }  public void setdocumentcurrentstate(documentstatus documentcurrentstate) {     this.documentcurrentstate = documentcurrentstate; } @temporal(temporaltype.timestamp) public date getdocumentissuancedate() {     return documentissuancedate; }  public void setdocumentissuancedate(date documentissuancedate) {     this.documentissuancedate = documentissuancedate; } @temporal(temporaltype.timestamp) public date getcreationdate() {     return creationdate; }  public void setcreationdate(date creationdate) {     this.creationdate = creationdate; }  @onetomany(fetch = fetchtype.lazy, targetentity = documentgeneratedhistorystatusimpl.class) @cascade(cascadetype.all) @jointable(name = "doc_gen_status", joincolumns = {@joincolumn(name="doc_gen_id")}, inversejoincolumns = {@joincolumn(name = "doc_gen_stat_id")}) @indexcolumn(name="doc_gen_id_index", base = 1) @lazycollection(lazycollectionoption.extra) public list<documentgeneratedhistorystatus> getdocumentgeneratedhistorystatuslist() {     return documentgeneratedhistorystatuslist; }  public void setdocumentgeneratedhistorystatuslist(         list<documentgeneratedhistorystatus> documentgeneratedhistorystatuslist) {     this.documentgeneratedhistorystatuslist = documentgeneratedhistorystatuslist; }   @override public boolean equals(object o) {     if (this == o) return true;      if (!(o instanceof documentdomaintogenerateimpl)) return false;      documentdomaintogenerateimpl = (documentdomaintogenerateimpl) o;      return new equalsbuilder()             .appendsuper(super.equals(o))             .append(getstatusorder(), that.getstatusorder())             .append(getnumberofattempt(), that.getnumberofattempt())             .append(getidentificationkey(), that.getidentificationkey())             .append(getidentification(), that.getidentification())             .append(getdocumentgroup(), that.getdocumentgroup())             .append(getdocumenttype(), that.getdocumenttype())             .append(getserver(), that.getserver())             .append(getauditdata(), that.getauditdata())             .append(getdocumentissuancedate(), that.getdocumentissuancedate())             .append(getcreationdate(), that.getcreationdate())             .append(getdocumentcurrentstate(), that.getdocumentcurrentstate())             .isequals(); }  @override public int hashcode() {     return new hashcodebuilder(17, 37)             .appendsuper(super.hashcode())             .append(getidentificationkey())             .append(getidentification())             .append(getdocumentgroup())             .append(getdocumenttype())             .append(getserver())             .append(getstatusorder())             .append(getnumberofattempt())             .append(getauditdata())             .append(getdocumentissuancedate())             .append(getcreationdate())             .append(getdocumentcurrentstate())             .tohashcode(); } 

second entity:

import javax.persistence.embedded; import javax.persistence.entity; import javax.persistence.manytoone; import javax.persistence.table;  @entity @table(name="doc_gen_hist_status") public class documentgeneratedhistorystatusimpl extends domainobjectimpl<documentgeneratedhistorystatus, integer> implements documentgeneratedhistorystatus{  /**  *   */ private static final long serialversionuid = -8542541552897795870l; private documentstatus documentstatus; private documentdomaintogenerate documentdomaintogenerate; @embedded @target(documentstatusimpl.class) public documentstatus getdocumentstatus() {     return documentstatus; }  public void setdocumentstatus(documentstatus documentstatus) {     this.documentstatus = documentstatus; }  @override @manytoone(targetentity = documentdomaintogenerateimpl.class) public documentdomaintogenerate getdocumentdomaintogenerate() {     return documentdomaintogenerate; } @override public void setdocumentdomaintogenerate(documentdomaintogenerate documentdomaintogenerate) {     this.documentdomaintogenerate = documentdomaintogenerate; }  @override public boolean equals(object o) {     if (this == o) return true;      if (!(o instanceof documentgeneratedhistorystatusimpl)) return false;      documentgeneratedhistorystatusimpl = (documentgeneratedhistorystatusimpl) o;      return new equalsbuilder()             .appendsuper(super.equals(o))             .append(getdocumentstatus(), that.getdocumentstatus())             .isequals(); }  @override public int hashcode() {     return new hashcodebuilder(11, 61)             .appendsuper(super.hashcode())             .append(getdocumentstatus())             .tohashcode(); } 

}

and when i'm loading documentdomaintogenerate following sql executed:

select     this_.id id25_0_,     this_.business_id_app business2_25_0_,     this_.business_id_ctx_app business3_25_0_,     this_.id_app id4_25_0_,     this_.id_ctx_name_app id5_25_0_,     this_.modulename modulename25_0_,     this_.business_id_app_role business7_25_0_,     this_.business_id_ctx_app_role business8_25_0_,     this_.id_app_role id9_25_0_,     this_.id_ctx_name_app_role id10_25_0_,     this_.business_id_app_user business11_25_0_,     this_.business_id_ctx_app_user business12_25_0_,     this_.id_app_user id13_25_0_,     this_.id_ctx_name_app_user id14_25_0_,     this_.creationdate creatio15_25_0_,     this_.doc_stat_app_b_id doc16_25_0_,     this_.doc_stat_app_b_id_ctx doc17_25_0_,     this_.doc_stat_app_id doc18_25_0_,     this_.doc_stat_app_id_ctx doc19_25_0_,     this_.doc_stat_app_module_name doc20_25_0_,     this_.doc_stat_role_b_id doc21_25_0_,     this_.doc_stat_role_b_id_ctx doc22_25_0_,     this_.doc_stat_role_id doc23_25_0_,     this_.doc_stat_role_id_ctx doc24_25_0_,     this_.doc_stat_user_b_id doc25_25_0_,     this_.doc_stat_user_b_id_ctx doc26_25_0_,     this_.doc_stat_user_id doc27_25_0_,     this_.doc_stat_user_id_ctx doc28_25_0_,     this_.description descrip29_25_0_,     this_.effectivedatetime effecti30_25_0_,     this_.ordertosend orderto31_25_0_,     this_.sended sended25_0_,     this_.statuscode_id statuscode45_25_0_,     this_.documentgroup documen33_25_0_,     this_.documentissuancedate documen34_25_0_,     this_.documenttype documen35_25_0_,     this_.business_id_doc business36_25_0_,     this_.business_id_ctx_doc business37_25_0_,     this_.id_doc id38_25_0_,     this_.id_ctx_name_doc id39_25_0_,     this_.identificationkey identif40_25_0_,     this_.numberofattempt numbero41_25_0_,     this_.ip ip25_0_,     this_.nodepid nodepid25_0_,     this_.statusorder statuso44_25_0_      document_generated this_      this_.id = ? 

next need add new documentgeneratedhistorystatus list in documentdomainttogenerate , when i'm executing this

documentgeneratedhistorystatus.setdocumentdomaintogenerate(documentdomaintogenerate); documentdomaintogenerate.getdocumentgeneratedhistorystatuslist().add(documentgeneratedhistorystatus); 

this sql executed

select     documentge0_.doc_gen_id doc1_25_2_,     documentge0_.doc_gen_stat_id doc2_2_,     documentge0_.doc_gen_id_index doc3_2_,     documentge1_.id id10_0_,     documentge1_.documentdomaintogenerate_id documen19_10_0_,     documentge1_.doc_stat_app_b_id doc2_10_0_,     documentge1_.doc_stat_app_b_id_ctx doc3_10_0_,     documentge1_.doc_stat_app_id doc4_10_0_,     documentge1_.doc_stat_app_id_ctx doc5_10_0_,     documentge1_.doc_stat_app_module_name doc6_10_0_,     documentge1_.doc_stat_role_b_id doc7_10_0_,     documentge1_.doc_stat_role_b_id_ctx doc8_10_0_,     documentge1_.doc_stat_role_id doc9_10_0_,     documentge1_.doc_stat_role_id_ctx doc10_10_0_,     documentge1_.doc_stat_user_b_id doc11_10_0_,     documentge1_.doc_stat_user_b_id_ctx doc12_10_0_,     documentge1_.doc_stat_user_id doc13_10_0_,     documentge1_.doc_stat_user_id_ctx doc14_10_0_,     documentge1_.description descrip15_10_0_,     documentge1_.effectivedatetime effecti16_10_0_,     documentge1_.ordertosend orderto17_10_0_,     documentge1_.sended sended10_0_,     documentge1_.statuscode_id statuscode20_10_0_,     documentdo2_.id id25_1_,     documentdo2_.business_id_app business2_25_1_,     documentdo2_.business_id_ctx_app business3_25_1_,     documentdo2_.id_app id4_25_1_,     documentdo2_.id_ctx_name_app id5_25_1_,     documentdo2_.modulename modulename25_1_,     documentdo2_.business_id_app_role business7_25_1_,     documentdo2_.business_id_ctx_app_role business8_25_1_,     documentdo2_.id_app_role id9_25_1_,     documentdo2_.id_ctx_name_app_role id10_25_1_,     documentdo2_.business_id_app_user business11_25_1_,     documentdo2_.business_id_ctx_app_user business12_25_1_,     documentdo2_.id_app_user id13_25_1_,     documentdo2_.id_ctx_name_app_user id14_25_1_,     documentdo2_.creationdate creatio15_25_1_,     documentdo2_.doc_stat_app_b_id doc16_25_1_,     documentdo2_.doc_stat_app_b_id_ctx doc17_25_1_,     documentdo2_.doc_stat_app_id doc18_25_1_,     documentdo2_.doc_stat_app_id_ctx doc19_25_1_,     documentdo2_.doc_stat_app_module_name doc20_25_1_,     documentdo2_.doc_stat_role_b_id doc21_25_1_,     documentdo2_.doc_stat_role_b_id_ctx doc22_25_1_,     documentdo2_.doc_stat_role_id doc23_25_1_,     documentdo2_.doc_stat_role_id_ctx doc24_25_1_,     documentdo2_.doc_stat_user_b_id doc25_25_1_,     documentdo2_.doc_stat_user_b_id_ctx doc26_25_1_,     documentdo2_.doc_stat_user_id doc27_25_1_,     documentdo2_.doc_stat_user_id_ctx doc28_25_1_,     documentdo2_.description descrip29_25_1_,     documentdo2_.effectivedatetime effecti30_25_1_,     documentdo2_.ordertosend orderto31_25_1_,     documentdo2_.sended sended25_1_,     documentdo2_.statuscode_id statuscode45_25_1_,     documentdo2_.documentgroup documen33_25_1_,     documentdo2_.documentissuancedate documen34_25_1_,     documentdo2_.documenttype documen35_25_1_,     documentdo2_.business_id_doc business36_25_1_,     documentdo2_.business_id_ctx_doc business37_25_1_,     documentdo2_.id_doc id38_25_1_,     documentdo2_.id_ctx_name_doc id39_25_1_,     documentdo2_.identificationkey identif40_25_1_,     documentdo2_.numberofattempt numbero41_25_1_,     documentdo2_.ip ip25_1_,     documentdo2_.nodepid nodepid25_1_,     documentdo2_.statusorder statuso44_25_1_      doc_gen_status documentge0_  inner join     doc_gen_hist_status documentge1_          on documentge0_.doc_gen_stat_id=documentge1_.id  left outer join     document_generated documentdo2_          on documentge1_.documentdomaintogenerate_id=documentdo2_.id      documentge0_.doc_gen_id=? 

is there option don't fetch whole collection when i'm trying add new item collection? doin'g wrong?