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| <h2 title="Annotation Type EntityResult" class="title">Annotation Type EntityResult</h2> |
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| <pre>@Target(value={}) |
| @Retention(value=RUNTIME) |
| public @interface <span class="memberNameLabel">EntityResult</span></pre> |
| <div class="block">Used in conjunction with the <a href="../../javax/persistence/SqlResultSetMapping.html" title="annotation in javax.persistence"><code>SqlResultSetMapping</code></a> annotation to map the SELECT |
| clause of a SQL query to an entity result. |
| |
| <p>If this annotation is used, the SQL statement should select |
| all of the columns that are mapped to the entity object. |
| This should include foreign key columns to related entities. |
| The results obtained when insufficient data is available |
| are undefined. |
| |
| <pre> |
| Example: |
| |
| Query q = em.createNativeQuery( |
| "SELECT o.id, o.quantity, o.item, i.id, i.name, i.description "+ |
| "FROM Order o, Item i " + |
| "WHERE (o.quantity > 25) AND (o.item = i.id)", |
| "OrderItemResults"); |
| @SqlResultSetMapping(name="OrderItemResults", |
| entities={ |
| @EntityResult(entityClass=com.acme.Order.class), |
| @EntityResult(entityClass=com.acme.Item.class) |
| }) |
| </pre></div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>Java Persistence 1.0</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../javax/persistence/SqlResultSetMapping.html" title="annotation in javax.persistence"><code>SqlResultSetMapping</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
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| <!-- =========== ANNOTATION TYPE REQUIRED MEMBER SUMMARY =========== --> |
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| <h3>Required Element Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Required Element Summary table, listing required elements, and an explanation"> |
| <caption><span>Required Elements</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Required Element and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>java.lang.Class</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../javax/persistence/EntityResult.html#entityClass--">entityClass</a></span></code> |
| <div class="block">The class of the result.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
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| <h3>Optional Element Summary</h3> |
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| <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>java.lang.String</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../javax/persistence/EntityResult.html#discriminatorColumn--">discriminatorColumn</a></span></code> |
| <div class="block">Specifies the column name (or alias) of the column in |
| the SELECT list that is used to determine the type of |
| the entity instance.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../javax/persistence/FieldResult.html" title="annotation in javax.persistence">FieldResult</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../javax/persistence/EntityResult.html#fields--">fields</a></span></code> |
| <div class="block">Maps the columns specified in the SELECT list of the |
| query to the properties or fields of the entity class.</div> |
| </td> |
| </tr> |
| </table> |
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| </ul> |
| </li> |
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| <h3>Element Detail</h3> |
| <a name="entityClass--"> |
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| <h4>entityClass</h4> |
| <pre>public abstract java.lang.Class entityClass</pre> |
| <div class="block">The class of the result.</div> |
| </li> |
| </ul> |
| </li> |
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| <h4>fields</h4> |
| <pre>public abstract <a href="../../javax/persistence/FieldResult.html" title="annotation in javax.persistence">FieldResult</a>[] fields</pre> |
| <div class="block">Maps the columns specified in the SELECT list of the |
| query to the properties or fields of the entity class.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>{}</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
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| <h4>discriminatorColumn</h4> |
| <pre>public abstract java.lang.String discriminatorColumn</pre> |
| <div class="block">Specifies the column name (or alias) of the column in |
| the SELECT list that is used to determine the type of |
| the entity instance.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>""</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
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