Below are my two entities, Campaign and AdSlot with the relationship stored in
campaign_adslot_xref. (all the other info has been removed for brevity)
One of the older positings mentioned something about ensuring that both equals
and hashCode are implemented. I am not implementing those methods, could that
be it?
|
| @Entity
| @Table(name="campaign")
| public class Campaign implements Serializable {
| private Set<AdSlot> adSlots;
|
| @ManyToMany(cascade = {CascadeType.ALL}, fetch = FetchType.EAGER,
mappedBy="campaigns")
| public Set<AdSlot> getAdSlots() {
| return adSlots;
| }
|
| public void setAdSlots(Set<AdSlot> adSlots) {
| this.adSlots = adSlots;
| }
| }
|
| @Entity
| @Table(name="ad_slot")
| public class AdSlot implements Serializable {
| private Set<ParentCampaign> campaigns;
|
| @ManyToMany(cascade = {CascadeType.ALL}, fetch = FetchType.LAZY)
| @JoinTable(name = "campaign_adslot_xref",
| joinColumns = {
| @JoinColumn(name = "ad_slot_id")
| },
| inverseJoinColumns = {
| @JoinColumn(name = "campaign_id")
| }
| )
| public Set<ParentCampaign> getCampaigns()
| {
| return campaigns;
| }
|
| public void setCampaigns(Set<ParentCampaign> campaigns) {
| this.campaigns = campaigns;
| }
| }
|
And here is the code in my backing bean where I try to remove all the
associations from this particular campaign:
|
|
| Set<AdSlot>adslots = currentCampaign.getAdSlots();
|
| if (null != adslots && adslots.size() > 0) {
|
| for (AdSlot as : adslots) {
|
| as.getCampaigns().remove(currentCampaign);
|
| }
|
| }
|
|
|
| currentCampaign.getAdSlots().clear();
|
| Set<Ad> ads = currentCampaign.getAds();
|
| if (null != ads && ads.size() > 0) {
|
| for (Ad a : ads) {
|
| a.getAdSlots().clear();
|
| }
|
| }
|
|
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http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3961160#3961160
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