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                                                    <td class="page-title-pattern-first-line " style="padding: 0; 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-11521" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-3c330ec7-8628-4e32-993a-088676586907" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-11521" style="color: #3b73af; text-decoration: none">HHH-11521</a> </td> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Issue Type:</th> 
                                                    <td class="has-icon" style="padding: 0; 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-3c330ec7-8628-4e32-993a-088676586907" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </td> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Affects Versions:</th> 
                                                    <td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 5.2.6 </td> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Assignee:</th> 
                                                    <td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Unassigned </td> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Attachments:</th> 
                                                    <td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> not-working-at-join-table-level.png, working-at-entity-table-level.png </td> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Components:</th> 
                                                    <td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> hibernate-core </td> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th> 
                                                    <td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 26/Feb/2017 05:06 AM </td> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Environment:</th> 
                                                    <td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Postgresql, Linux, Spring Data JPA Repository </td> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Labels:</th> 
                                                    <td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> core hibernate jpa21 </td> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Priority:</th> 
                                                    <td class="has-icon" style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-major-0149373c-9bb0-4c76-bcda-6af79fa2b389" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </td> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Reporter:</th> 
                                                    <td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="avinashga23" id="email_avinashga23" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=avinashga23" style="color:#6c797f;; color: #3b73af; text-decoration: none">Avinash G A</a> </td> 
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                                    <td class="email-content-main mobile-expand  issue-description-container" style="padding: 0; border-collapse: collapse; border-left: 1px solid #cccccc; border-right: 1px solid #cccccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #ffffff; padding-top: 5px; padding-bottom: 10px" bgcolor="#ffffff"> 
                                        <table class="text-paragraph-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0; mso-table-rspace: 0; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 2px"> 
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                                                    <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0; margin-top: 0">Hi,</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">When using join table for many to many relationship i have specified unique constraint, but the same has not been created in Database.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Here is my entity definition :-</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; border-radius: 3px; margin: 9px 0">
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                                                                <pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@Cacheable
@Entity(name = <span class="code-quote" style="color: #009100">"ImageGroup"</span>)
@Table(name = <span class="code-quote" style="color: #009100">"\"</span>image_group\"", indexes = {
                @Index(name = <span class="code-quote" style="color: #009100">"\"</span>img_grp_tenant_name_idx\<span class="code-quote" style="color: #009100">"", columnList = "</span>\<span class="code-quote" style="color: #009100">"tenant\"</span>,\<span class="code-quote" style="color: #009100">"name\"</span>"),
                @Index(name = <span class="code-quote" style="color: #009100">"\"</span>img_grp_tenant_idx\<span class="code-quote" style="color: #009100">"", columnList = "</span>\<span class="code-quote" style="color: #009100">"tenant\"</span>") }, uniqueConstraints = {
                                @UniqueConstraint(name = <span class="code-quote" style="color: #009100">"\"</span>img_grp_tenant_name_uq\<span class="code-quote" style="color: #009100">"", columnNames = { "</span>\<span class="code-quote" style="color: #009100">"tenant\"</span><span class="code-quote" style="color: #009100">", "</span>\<span class="code-quote" style="color: #009100">"name\"</span>" }), })
@SequenceGenerator(name = <span class="code-quote" style="color: #009100">"image_group_id_sequence"</span>, sequenceName = <span class="code-quote" style="color: #009100">"\"</span>image_group_id_seq\"", initialValue = 1)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>ImageGroupDO {

        <span class="code-comment" style="color: #808080">/** The id. */</span>
        @Id
        @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = <span class="code-quote" style="color: #009100">"image_group_id_sequence"</span>)
        @Column(name = <span class="code-quote" style="color: #009100">"\"</span>id\"")
        <span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">long</span> id;

        <span class="code-comment" style="color: #808080">/** The name. */</span>
        @NotNull
        @Size(min = 2, max = 255)
        @Column(name = <span class="code-quote" style="color: #009100">"\"</span>name\"", nullable = <span class="code-keyword" style="color: #000091">false</span>, length = 255)
        <span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> name;

        <span class="code-comment" style="color: #808080">/** The description. */</span>
        @Size(max = 255)
        @Column(name = <span class="code-quote" style="color: #009100">"\"</span>description\"", length = 255)
        <span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> description;

        <span class="code-comment" style="color: #808080">/** The active. */</span>
        @NotNull
        @Column(name = <span class="code-quote" style="color: #009100">"\"</span>active\"", nullable = <span class="code-keyword" style="color: #000091">false</span>)
        <span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">boolean</span> active;

        <span class="code-comment" style="color: #808080">/** The tenant <span class="code-keyword" style="color: #000091; color: #808080">do</span>. */</span>
        @NotNull
        @ManyToOne(fetch = FetchType.EAGER, optional = <span class="code-keyword" style="color: #000091">false</span>)
        @JoinColumn(name = <span class="code-quote" style="color: #009100">"\"</span>tenant\<span class="code-quote" style="color: #009100">"", foreignKey = @ForeignKey(name = "</span>\<span class="code-quote" style="color: #009100">"img_grp_tenant_fk\"</span>"))
        <span class="code-keyword" style="color: #000091">private</span> TenantDO tenantDo;

        <span class="code-comment" style="color: #808080">/** The images. */</span>
        @ManyToMany(fetch = FetchType.LAZY, cascade = { CascadeType.PERSIST, CascadeType.MERGE })
        @JoinTable(name = <span class="code-quote" style="color: #009100">"\"</span>image_group_image\"", joinColumns = 
                @JoinColumn(name = <span class="code-quote" style="color: #009100">"\"</span>image_group\<span class="code-quote" style="color: #009100">"", referencedColumnName = "</span>\<span class="code-quote" style="color: #009100">"id\"</span>"), inverseJoinColumns = 
                        @JoinColumn(name = <span class="code-quote" style="color: #009100">"\"</span>image\<span class="code-quote" style="color: #009100">"", referencedColumnName = "</span>\<span class="code-quote" style="color: #009100">"id\"</span>"), 
                        foreignKey = @ForeignKey(name = <span class="code-quote" style="color: #009100">"\"</span>img_grp_img_image_group_fk\""), 
                        inverseForeignKey = @ForeignKey(name = <span class="code-quote" style="color: #009100">"\"</span>img_grp_img_image_fk\""), indexes = {
                        @Index(name = <span class="code-quote" style="color: #009100">"\"</span>img_grp_img_image_group_fk_idx\<span class="code-quote" style="color: #009100">"", columnList = "</span>\<span class="code-quote" style="color: #009100">"image_group\"</span>"),
                        @Index(name = <span class="code-quote" style="color: #009100">"\"</span>img_grp_img_image_fk_idx\<span class="code-quote" style="color: #009100">"", columnList = "</span>\<span class="code-quote" style="color: #009100">"image\"</span>") }, uniqueConstraints = {
                                        @UniqueConstraint(name = <span class="code-quote" style="color: #009100">"\"</span>img_grp_img_img_grp_img_uq\<span class="code-quote" style="color: #009100">"", columnNames = { "</span>\<span class="code-quote" style="color: #009100">"image_group\"</span>",
                                                        <span class="code-quote" style="color: #009100">"\"</span>image\"" }) })
        <span class="code-keyword" style="color: #000091">private</span> Set&lt;ImageDO&gt; images = <span class="code-keyword" style="color: #000091">new</span> HashSet&lt;&gt;();

        <span class="code-comment" style="color: #808080">/** The created at. */</span>
        @NotNull
        @Column(name = <span class="code-quote" style="color: #009100">"\"</span>created_at\"", nullable = <span class="code-keyword" style="color: #000091">false</span>)
        <span class="code-keyword" style="color: #000091">private</span> Date createdAt;

        <span class="code-comment" style="color: #808080">/** The modified at. */</span>
        @NotNull
        @Column(name = <span class="code-quote" style="color: #009100">"\"</span>modified_at\"", nullable = <span class="code-keyword" style="color: #000091">false</span>)
        <span class="code-keyword" style="color: #000091">private</span> Date modifiedAt;

        /**
         * On create.
         */
        @PrePersist
        <span class="code-keyword" style="color: #000091">protected</span> void onCreate() {
                <span class="code-keyword" style="color: #000091">this</span>.createdAt = <span class="code-keyword" style="color: #000091">new</span> Date();
                <span class="code-keyword" style="color: #000091">this</span>.modifiedAt = <span class="code-keyword" style="color: #000091">new</span> Date();
        }

        /**
         * On update.
         */
        @PreUpdate
        <span class="code-keyword" style="color: #000091">protected</span> void onUpdate() {
                <span class="code-keyword" style="color: #000091">this</span>.modifiedAt = <span class="code-keyword" style="color: #000091">new</span> Date();
        }

        /**
         * Gets the id.
         *
         * @<span class="code-keyword" style="color: #000091">return</span> the id
         */
        <span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">long</span> getId() {
                <span class="code-keyword" style="color: #000091">return</span> id;
        }

        /**
         * Sets the id.
         *
         * @param id
         *            the <span class="code-keyword" style="color: #000091">new</span> id
         */
        <span class="code-keyword" style="color: #000091">public</span> void setId(<span class="code-object" style="color: #910091">long</span> id) {
                <span class="code-keyword" style="color: #000091">this</span>.id = id;
        }

        /**
         * Gets the name.
         *
         * @<span class="code-keyword" style="color: #000091">return</span> the name
         */
        <span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">String</span> getName() {
                <span class="code-keyword" style="color: #000091">return</span> name;
        }

        /**
         * Sets the name.
         *
         * @param name
         *            the <span class="code-keyword" style="color: #000091">new</span> name
         */
        <span class="code-keyword" style="color: #000091">public</span> void setName(<span class="code-object" style="color: #910091">String</span> name) {
                <span class="code-keyword" style="color: #000091">this</span>.name = name;
        }

        /**
         * Gets the description.
         *
         * @<span class="code-keyword" style="color: #000091">return</span> the description
         */
        <span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">String</span> getDescription() {
                <span class="code-keyword" style="color: #000091">return</span> description;
        }

        /**
         * Sets the description.
         *
         * @param description
         *            the <span class="code-keyword" style="color: #000091">new</span> description
         */
        <span class="code-keyword" style="color: #000091">public</span> void setDescription(<span class="code-object" style="color: #910091">String</span> description) {
                <span class="code-keyword" style="color: #000091">this</span>.description = description;
        }

        /**
         * Checks <span class="code-keyword" style="color: #000091">if</span> is active.
         *
         * @<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">true</span>, <span class="code-keyword" style="color: #000091">if</span> is active
         */
        <span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">boolean</span> isActive() {
                <span class="code-keyword" style="color: #000091">return</span> active;
        }

        /**
         * Sets the active.
         *
         * @param active
         *            the <span class="code-keyword" style="color: #000091">new</span> active
         */
        <span class="code-keyword" style="color: #000091">public</span> void setActive(<span class="code-object" style="color: #910091">boolean</span> active) {
                <span class="code-keyword" style="color: #000091">this</span>.active = active;
        }

        /**
         * Gets the tenant <span class="code-keyword" style="color: #000091">do</span>.
         *
         * @<span class="code-keyword" style="color: #000091">return</span> the tenant <span class="code-keyword" style="color: #000091">do</span>
         */
        <span class="code-keyword" style="color: #000091">public</span> TenantDO getTenantDo() {
                <span class="code-keyword" style="color: #000091">return</span> tenantDo;
        }

        /**
         * Sets the tenant <span class="code-keyword" style="color: #000091">do</span>.
         *
         * @param tenantDo
         *            the <span class="code-keyword" style="color: #000091">new</span> tenant <span class="code-keyword" style="color: #000091">do</span>
         */
        <span class="code-keyword" style="color: #000091">public</span> void setTenantDo(TenantDO tenantDo) {
                <span class="code-keyword" style="color: #000091">this</span>.tenantDo = tenantDo;
        }

        /**
         * Gets the images.
         *
         * @<span class="code-keyword" style="color: #000091">return</span> the images
         */
        <span class="code-keyword" style="color: #000091">public</span> Set&lt;ImageDO&gt; getImages() {
                <span class="code-keyword" style="color: #000091">return</span> images;
        }

        /**
         * Sets the images.
         *
         * @param images
         *            the <span class="code-keyword" style="color: #000091">new</span> images
         */
        <span class="code-keyword" style="color: #000091">public</span> void setImages(Set&lt;ImageDO&gt; images) {
                <span class="code-keyword" style="color: #000091">this</span>.images = images;
        }

        /**
         * Gets the created at.
         *
         * @<span class="code-keyword" style="color: #000091">return</span> the created at
         */
        <span class="code-keyword" style="color: #000091">public</span> Date getCreatedAt() {
                <span class="code-keyword" style="color: #000091">return</span> createdAt;
        }

        /**
         * Sets the created at.
         *
         * @param createdAt
         *            the <span class="code-keyword" style="color: #000091">new</span> created at
         */
        <span class="code-keyword" style="color: #000091">public</span> void setCreatedAt(Date createdAt) {
                <span class="code-keyword" style="color: #000091">this</span>.createdAt = createdAt;
        }

        /**
         * Gets the modified at.
         *
         * @<span class="code-keyword" style="color: #000091">return</span> the modified at
         */
        <span class="code-keyword" style="color: #000091">public</span> Date getModifiedAt() {
                <span class="code-keyword" style="color: #000091">return</span> modifiedAt;
        }

        /**
         * Sets the modified at.
         *
         * @param modifiedAt
         *            the <span class="code-keyword" style="color: #000091">new</span> modified at
         */
        <span class="code-keyword" style="color: #000091">public</span> void setModifiedAt(Date modifiedAt) {
                <span class="code-keyword" style="color: #000091">this</span>.modifiedAt = modifiedAt;
        }

        /*
         * (non-Javadoc)
         * 
         * @see java.lang.<span class="code-object" style="color: #910091">Object</span>#equals(java.lang.<span class="code-object" style="color: #910091">Object</span>)
         */
        @Override
        <span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">boolean</span> equals(<span class="code-object" style="color: #910091">Object</span> obj) {
                <span class="code-keyword" style="color: #000091">if</span> (obj == <span class="code-keyword" style="color: #000091">null</span>)
                        <span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">false</span>;
                <span class="code-keyword" style="color: #000091">if</span> (!(obj <span class="code-keyword" style="color: #000091">instanceof</span> DataCenterDO))
                        <span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">false</span>;
                ImageGroupDO imageGroupDO = ImageGroupDO.<span class="code-keyword" style="color: #000091">class.</span><span class="code-keyword" style="color: #000091">cast</span>(obj);

                <span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">this</span>.id == imageGroupDO.getId();
        }

        /*
         * (non-Javadoc)
         * 
         * @see java.lang.<span class="code-object" style="color: #910091">Object</span>#hashCode()
         */
        @Override
        <span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">int</span> hashCode() {
                <span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">new</span> <span class="code-object" style="color: #910091">Long</span>(id).intValue();
        }

}
</pre> 
                                                            </div>
                                                        </div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">The unique constraint that i have added to the join table is not getting created in Postgresql.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Any unique constraint at entity level with @table is working fine.</p> </td> 
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