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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-10393" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-e8d5387d-10d9-4254-b690-87589ac241c5" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10393" style="color: #3b73af; text-decoration: none">HHH-10393</a> </td>
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<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-avatar-e8d5387d-10d9-4254-b690-87589ac241c5" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 4.3.11 </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 21/Dec/2015 00:51 AM </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="fawzyj" id="email_fawzyj" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=fawzyj" style="color:#6c797f;; color: #3b73af; text-decoration: none">Joseph Fouad</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">I am developing an application using JPA 2.1 with Hibernate 4.3 as the persistance provider.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">For the sacke of readability and better maintainance, I want to explicitly name every possible think and not to rely on the hibernate naming strategy.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I am using the newly introduced @ForignKey annotation to customize the forign key constraint name, and it works fine for @JoinColumn associated with @ManyToOne relationships.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The problem comes when trying to customise the forign key constraints generated for @ManyToMany relationship using a @JoinTable, the provider do not use my provided name, and revert back to its randomly generated name.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">for example:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@ManyToOne
@JoinColumn(name = <span class="code-quote" style="color: #009100">"store_id"</span>, referencedColumnName = <span class="code-quote" style="color: #009100">"id"</span>,
foreignKey = @ForeignKey(name = <span class="code-quote" style="color: #009100">"fk_collection_store_id"</span>))
Store store;
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">correctly generate the following ddl</p>
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
alter table collection add constraint fk_collection_store_id foreign key (store_id) references store
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">but when i try to use it with @ManyToMany association, it does not work as expected:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@ManyToMany
@JoinTable(name=<span class="code-quote" style="color: #009100">"collection_product"</span>,
joinColumns = {@JoinColumn(name=<span class="code-quote" style="color: #009100">"collection_id"</span>, referencedColumnName = <span class="code-quote" style="color: #009100">"id"</span>)},
foreignKey = @ForeignKey(name = <span class="code-quote" style="color: #009100">"fk_collection_product__collection_id"</span>),
inverseJoinColumns = {@JoinColumn(name=<span class="code-quote" style="color: #009100">"product_id"</span>, referencedColumnName = <span class="code-quote" style="color: #009100">"id"</span>)},
inverseForeignKey = @ForeignKey(name = <span class="code-quote" style="color: #009100">"fk_collection_product__product_id"</span>))
List<Product> products = <span class="code-keyword" style="color: #000091">new</span> ArrayList<>();
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">the generated ddl doesnot honor my provided names, and revert to the auto generated random names:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
alter table collection_product add constraint FK_skd8u4feadi59mpp8os1q1ar3 foreign key (product_id) references product
alter table collection_product add constraint FK_lbkv2n46sv06t6qfwabbk0wgw foreign key (collection_id) references collection
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">So, what is wrong here?</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">by the way, I tried to use foregnKey attribute on the @JoinColumn itself (it seems wrong, but i tried it anyway) and it does not help either:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@ManyToMany
@JoinTable(name=<span class="code-quote" style="color: #009100">"collection_product"</span>,
joinColumns={@JoinColumn(name=<span class="code-quote" style="color: #009100">"collection_id"</span>, referencedColumnName = <span class="code-quote" style="color: #009100">"id"</span>,
foreignKey = @ForeignKey(name = <span class="code-quote" style="color: #009100">"fk_collection_product__collection_id"</span>))},
inverseJoinColumns={@JoinColumn(name=<span class="code-quote" style="color: #009100">"product_id"</span>, referencedColumnName = <span class="code-quote" style="color: #009100">"id"</span>,
foreignKey = @ForeignKey(name = <span class="code-quote" style="color: #009100">"fk_collection_product__product_id"</span>))})
List<Product> products = <span class="code-keyword" style="color: #000091">new</span> ArrayList<>();
</pre>
</div>
</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">it does not work either:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
alter table collection_product add constraint FK_skd8u4feadi59mpp8os1q1ar3 foreign key (product_id) references product
alter table collection_product add constraint FK_lbkv2n46sv06t6qfwabbk0wgw foreign key (collection_id) references collection
</pre>
</div>
</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">what is the correct way to make this work?</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Thanks</p> </td>
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