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| <li>Summary: </li> |
| <li>Field | </li> |
| <li>Required | </li> |
| <li><a href="#annotation.type.optional.element.summary">Optional</a></li> |
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| <li><a href="#annotation.type.element.detail">Element</a></li> |
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| <h2 title="Annotation Type ElementCollection" class="title">Annotation Type ElementCollection</h2> |
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| <pre>@Target(value={METHOD,FIELD}) |
| @Retention(value=RUNTIME) |
| public @interface <span class="memberNameLabel">ElementCollection</span></pre> |
| <div class="block">Specifies a collection of instances of a basic type or embeddable |
| class. |
| Must be specified if the collection is to be mapped by |
| means of a collection table. |
| |
| <pre> |
| Example: |
| |
| @Entity public class Person { |
| @Id protected String ssn; |
| protected String name; |
| ... |
| @ElementCollection |
| protected Set<String> nickNames = new HashSet(); |
| ... |
| } |
| </pre></div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>Java Persistence 2.0</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h3>Optional Element Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Optional Element Summary table, listing optional elements, and an explanation"> |
| <caption><span>Optional Elements</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Optional Element and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../javax/persistence/FetchType.html" title="enum in javax.persistence">FetchType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../javax/persistence/ElementCollection.html#fetch--">fetch</a></span></code> |
| <div class="block">(Optional) Whether the collection should be lazily loaded or must be |
| eagerly fetched.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>java.lang.Class</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../javax/persistence/ElementCollection.html#targetClass--">targetClass</a></span></code> |
| <div class="block">(Optional) The basic or embeddable class that is the element |
| type of the collection.</div> |
| </td> |
| </tr> |
| </table> |
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| <h3>Element Detail</h3> |
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| <h4>targetClass</h4> |
| <pre>public abstract java.lang.Class targetClass</pre> |
| <div class="block">(Optional) The basic or embeddable class that is the element |
| type of the collection. This element is optional only if the |
| collection field or property is defined using Java generics, |
| and must be specified otherwise. It defaults to the |
| paramterized type of the collection when defined using |
| generics.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>void.class</dd> |
| </dl> |
| </li> |
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| <h4>fetch</h4> |
| <pre>public abstract <a href="../../javax/persistence/FetchType.html" title="enum in javax.persistence">FetchType</a> fetch</pre> |
| <div class="block">(Optional) Whether the collection should be lazily loaded or must be |
| eagerly fetched. The EAGER strategy is a requirement on |
| the persistence provider runtime that the collection elements |
| must be eagerly fetched. The LAZY strategy is a hint to the |
| persistence provider runtime.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>javax.persistence.FetchType.LAZY</dd> |
| </dl> |
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