Thanks for your reply
but how to edit the row using this Composite-id, i am not worked on this
please suggest me...
Alistair Bush wrote:
>
>> Hi Matt,
>>
>> presently i'm working with appfuse 2.0 (struts2) application. i have
>> one
>> problem how to use composite primary key using hibernate in this
>> application
>
> I would suggest using the @EmeddedId
>
> e.g.
>
> -- PeriodRegion.java
>
> package com.app.model;
>
> import java.io.Serializable;
> import javax.persistence.Basic;
> import javax.persistence.Column;
> import javax.persistence.EmbeddedId;
> import javax.persistence.Entity;
> import javax.persistence.NamedQueries;
> import javax.persistence.NamedQuery;
> import javax.persistence.Table;
>
> /**
> *
> * @author alistair
> */
> @Entity
> @Table(name = "period_region", catalog = "myproject", schema = "")
> @NamedQueries({...@namedquery(name = "PeriodRegion.findAll", query = "SELECT
> p
> FROM PeriodRegion p"), @NamedQuery(name = "PeriodRegion.findByPersonid",
> query
> = "SELECT p FROM PeriodRegion p WHERE p.periodRegionPK.personid =
> :personid"),
> @NamedQuery(name = "PeriodRegion.findByRegionid", query = "SELECT p FROM
> PeriodRegion p WHERE p.periodRegionPK.regionid = :regionid"),
> @NamedQuery(name
> = "PeriodRegion.findByPaid", query = "SELECT p FROM PeriodRegion p WHERE
> p.paid
> = :paid")})
> public class PeriodRegion implements Serializable {
> private static final long serialVersionUID = 1L;
> @EmbeddedId
> protected PeriodRegionPK periodRegionPK;
> @Basic(optional = false)
> @Column(name = "paid", nullable = false)
> private boolean paid;
>
> public PeriodRegion() {
> }
>
> public PeriodRegion(PeriodRegionPK periodRegionPK) {
> this.periodRegionPK = periodRegionPK;
> }
>
> public PeriodRegion(PeriodRegionPK periodRegionPK, boolean paid) {
> this.periodRegionPK = periodRegionPK;
> this.paid = paid;
> }
>
> public PeriodRegion(long personid, long regionid) {
> this.periodRegionPK = new PeriodRegionPK(personid, regionid);
> }
>
> public PeriodRegionPK getPeriodRegionPK() {
> return periodRegionPK;
> }
>
> public void setPeriodRegionPK(PeriodRegionPK periodRegionPK) {
> this.periodRegionPK = periodRegionPK;
> }
>
> public boolean getPaid() {
> return paid;
> }
>
> public void setPaid(boolean paid) {
> this.paid = paid;
> }
>
> @Override
> public int hashCode() {
> int hash = 0;
> hash += (periodRegionPK != null ? periodRegionPK.hashCode() : 0);
> return hash;
> }
>
> @Override
> public boolean equals(Object object) {
> // TODO: Warning - this method won't work in the case the id
> fields are
> not set
> if (!(object instanceof PeriodRegion)) {
> return false;
> }
> PeriodRegion other = (PeriodRegion) object;
> if ((this.periodRegionPK == null && other.periodRegionPK != null)
> ||
> (this.periodRegionPK != null &&
> !this.periodRegionPK.equals(other.periodRegionPK))) {
> return false;
> }
> return true;
> }
>
> @Override
> public String toString() {
> return "PeriodRegion[periodRegionPK=" + periodRegionPK + "]";
> }
>
> }
>
> -- PeriodRegionPK.java
>
> package com.app.model;
>
> import java.io.Serializable;
> import javax.persistence.Basic;
> import javax.persistence.Column;
> import javax.persistence.Embeddable;
>
> /**
> *
> * @author alistair
> */
> @Embeddable
> public class PeriodRegionPK implements Serializable {
> @Basic(optional = false)
> @Column(name = "personid", nullable = false)
> private long personid;
> @Basic(optional = false)
> @Column(name = "regionid", nullable = false)
> private long regionid;
>
> public PeriodRegionPK() {
> }
>
> public PeriodRegionPK(long personid, long regionid) {
> this.personid = personid;
> this.regionid = regionid;
> }
>
> public long getPersonid() {
> return personid;
> }
>
> public void setPersonid(long personid) {
> this.personid = personid;
> }
>
> public long getRegionid() {
> return regionid;
> }
>
> public void setRegionid(long regionid) {
> this.regionid = regionid;
> }
>
> @Override
> public int hashCode() {
> int hash = 0;
> hash += (int) personid;
> hash += (int) regionid;
> return hash;
> }
>
> @Override
> public boolean equals(Object object) {
> // TODO: Warning - this method won't work in the case the id
> fields are
> not set
> if (!(object instanceof PeriodRegionPK)) {
> return false;
> }
> PeriodRegionPK other = (PeriodRegionPK) object;
> if (this.personid != other.personid) {
> return false;
> }
> if (this.regionid != other.regionid) {
> return false;
> }
> return true;
> }
>
> @Override
> public String toString() {
> return "com.counties.app.model.PeriodRegionPK[personid=" +
> personid +
> ", regionid=" + regionid + "]";
> }
>
> }
>
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>
>
-----
---
Sudhakar
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