Redkale 2.4.0 结束

src/main/java/javax/persistence/Cacheable.java

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+/** *****************************************************************************
+ * Copyright (c) 2008 - 2013 Oracle Corporation. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
+ * which accompanies this distribution.
+ * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
+ * and the Eclipse Distribution License is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ *     Linda DeMichiel - Java Persistence 2.1
+ *     Linda DeMichiel - Java Persistence 2.0
+ *
+ ***************************************************************************** */
+package javax.persistence;
+
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+/**
+ * Specifies whether an entity should be cached if caching is enabled
+ * when the value of the <code>persistence.xml</code> caching element
+ * is <code>ENABLE_SELECTIVE</code> or <code>DISABLE_SELECTIVE</code>.
+ * The value of the <code>Cacheable</code> annotation is inherited by
+ * subclasses; it can be overridden by specifying
+ * <code>Cacheable</code> on a subclass.
+ *
+ * <p>
+ * <code>Cacheable(false)</code> means that the entity and its state must
+ * not be cached by the provider.
+ *
+ * @since Java Persistence 2.0
+ */
+@Target({TYPE})
+@Retention(RUNTIME)
+public @interface Cacheable {
+
+    /**
+     * (Optional) Whether or not the entity should be cached.
+     *
+     * @return boolean
+     */
+    boolean value() default true;
+
+    /**
+     * (Optional) 定时自动更新缓存的周期秒数，为0表示不做定时更新， 大于0表示每经过interval秒后会自动从数据库中拉取数据更新Cache
+     *
+     * @return int
+     */
+    int interval() default 0;
+
+    /**
+     * DataSource是否直接返回对象的真实引用， 而不是copy一份
+     *
+     * @return boolean
+     */
+    boolean direct() default false;
+
+}