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| <li>Summary: </li> |
| <li>Field | </li> |
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| <li><a href="#annotation.type.optional.element.summary">Optional</a></li> |
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| <h2 title="Annotation Type Basic" class="title">Annotation Type Basic</h2> |
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| <pre>@Target(value={METHOD,FIELD}) |
| @Retention(value=RUNTIME) |
| public @interface <span class="memberNameLabel">Basic</span></pre> |
| <div class="block">The simplest type of mapping to a database column. The |
| <code>Basic</code> annotation can be applied to a persistent |
| property or instance variable of any of the following types: Java |
| primitive types, wrappers of the primitive types, <code>String</code>, |
| <code>java.math.BigInteger</code>, |
| <code>java.math.BigDecimal</code>, |
| <code>java.util.Date</code>, |
| <code>java.util.Calendar</code>, |
| <code>java.sql.Date</code>, |
| <code>java.sql.Time</code>, |
| <code>java.sql.Timestamp</code>, <code>byte[]</code>, <code>Byte[]</code>, |
| <code>char[]</code>, <code>Character[]</code>, enums, and any other type that |
| implements <code>java.io.Serializable</code>. |
| |
| <p> The use of the <code>Basic</code> annotation is optional for |
| persistent fields and properties of these types. If the |
| <code>Basic</code> annotation is not specified for such a field or |
| property, the default values of the <code>Basic</code> annotation |
| will apply. |
| |
| <pre> |
| Example 1: |
| |
| @Basic |
| protected String name; |
| |
| Example 2: |
| |
| @Basic(fetch=LAZY) |
| protected String getName() { return name; } |
| |
| </pre></div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>Java Persistence 1.0</dd> |
| </dl> |
| </li> |
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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/Basic.html#fetch--">fetch</a></span></code> |
| <div class="block">(Optional) Defines whether the value of the field or property should |
| be lazily loaded or must be eagerly fetched.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../javax/persistence/Basic.html#optional--">optional</a></span></code> |
| <div class="block">(Optional) Defines whether the value of the field or property may be null.</div> |
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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) Defines whether the value of the field or property should |
| be lazily loaded or must be eagerly fetched. The <code>EAGER</code> |
| strategy is a requirement on the persistence provider runtime |
| that the value must be eagerly fetched. The <code>LAZY</code> |
| strategy is a hint to the persistence provider runtime. |
| If not specified, defaults to <code>EAGER</code>.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>javax.persistence.FetchType.EAGER</dd> |
| </dl> |
| </li> |
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| <h4>optional</h4> |
| <pre>public abstract boolean optional</pre> |
| <div class="block">(Optional) Defines whether the value of the field or property may be null. |
| This is a hint and is disregarded for primitive types; it may |
| be used in schema generation. |
| If not specified, defaults to <code>true</code>.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>true</dd> |
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