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<td style="vertical-align: top;; padding: 0; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://hibernate.atlassian.net/browse/HBX-1902?atlOrigin=eyJpIjoiZmQ5N2ExOWY2MmMzNGRhNWJlYjdhYTU4NTdiYTZhZDciLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Re: H2 schema generation ignores length property of @Column in @AttributeOverride</a> </span> </td>
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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: 10px 0 0; margin-top: 0">Hi Koen,</p> <p style="margin: 10px 0 0">it is the other way around. Given the following class structur</p>
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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">@MappedSuperclass
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>UniqueEntity <span class="code-keyword" style="color: #000091">implements</span> Serializable {
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> UUID_NULL = <span class="code-quote" style="color: #009100">"00000000-0000-0000-0000-000000000000"</span>;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">long</span> serialVersionUID = -3610403242496914987L;
@Id
@Column(columnDefinition = <span class="code-quote" style="color: #009100">"uniqueidentifier"</span>)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> uuid;
<span class="code-keyword" style="color: #000091">protected</span> UniqueEntity() {
<span class="code-keyword" style="color: #000091">this</span>.setUuid(UUID.randomUUID().toString().toUpperCase());
}
<span class="code-keyword" style="color: #000091">public</span> UniqueEntity(<span class="code-object" style="color: #910091">String</span> uuid) {
<span class="code-keyword" style="color: #000091">this</span>.setUuid(UUID.fromString(uuid).toString().toUpperCase());
}
@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">this</span>.getUuid().hashCode();
}
@Override
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">boolean</span> equals(java.lang.<span class="code-object" style="color: #910091">Object</span> object) {
<span class="code-keyword" style="color: #000091">if</span> (object <span class="code-keyword" style="color: #000091">instanceof</span> UniqueEntity) {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">this</span>.getUuid().equals(((UniqueEntity) object).getUuid());
}
<span class="code-keyword" style="color: #000091">if</span> (object <span class="code-keyword" style="color: #000091">instanceof</span> <span class="code-object" style="color: #910091">String</span>) {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">this</span>.getUuid().equals(object);
}
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">super</span>.equals(object);
}
@Override
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">String</span> toString() {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">this</span>.getUuid();
}
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">String</span> getUuid() {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">this</span>.uuid;
}
<span class="code-keyword" style="color: #000091">public</span> void setUuid(<span class="code-object" style="color: #910091">String</span> uuid) {
<span class="code-keyword" style="color: #000091">this</span>.uuid = uuid;
}
}</pre>
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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">@Entity(name = <span class="code-quote" style="color: #009100">"Test"</span>)
@Table(name = <span class="code-quote" style="color: #009100">"\"</span>Test\"")
@AttributeOverride(name = <span class="code-quote" style="color: #009100">"uuid"</span>,
column = @Column(columnDefinition = <span class="code-quote" style="color: #009100">"varchar"</span>, name = <span class="code-quote" style="color: #009100">"\"</span>uuid\"", length = 36))
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>Test <span class="code-keyword" style="color: #000091">extends</span> UniqueEntity <span class="code-keyword" style="color: #000091">implements</span> Serializable {
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">long</span> serialVersionUID = -4887208830019935105L;
}</pre>
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</div> <p style="margin: 10px 0 0">Hibernate generates the following table creation script for Test entity</p>
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<pre class="code-sql" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal"><span class="code-keyword" style="color: #000091">create</span> <span class="code-keyword" style="color: #000091">table</span> <span class="code-quote" style="color: #009100">"Test"</span> (
<span class="code-quote" style="color: #009100">"uuid"</span> <span class="code-keyword" style="color: #000091">varchar</span> <span class="code-keyword" style="color: #000091">not</span> <span class="code-keyword" style="color: #000091">null</span>,
<span class="code-keyword" style="color: #000091">primary</span> <span class="code-keyword" style="color: #000091">key</span> (<span class="code-quote" style="color: #009100">"uuid"</span>)
)</pre>
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</div> <p style="margin: 10px 0 0">Where I would expect the following</p>
<div class="preformatted 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 style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal; white-space: pre; word-break: normal; word-wrap: break-word; word-break: break-all; white-space: pre-wrap">create table "Test" (
"uuid" varchar(36) not null,
primary key ("uuid")
)</pre>
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</div> <p style="margin: 10px 0 0">The class UniqueEntity is a base class shared across multiple projects primarily designed for SQLServer databases and therefore annotaded with “uniqueidentifier” column definition. As one project uses a H2 database which does not have such a data type the class Test is annotated with @AttributeOverride to switch to “varchar” type with a specific length of 36. But the length property is ignored by the script generation tool.</p> </td>
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