This commit is contained in:
Redkale
2017-01-17 13:37:34 +08:00
parent da0ff24af6
commit 4071a5d165
5 changed files with 31 additions and 23 deletions

View File

@@ -1,4 +1,4 @@
/*******************************************************************************
/** *****************************************************************************
* Copyright (c) 2011 - 2013 Oracle Corporation. All rights reserved.
*
* This program and the accompanying materials are made available under the
@@ -11,7 +11,7 @@
* Contributors:
* Linda DeMichiel - Java Persistence 2.1
*
******************************************************************************/
***************************************************************************** */
package javax.persistence;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
@@ -24,23 +24,18 @@ import java.lang.annotation.Target;
* Note that it is not necessary to specify an index for a primary key,
* as the primary key index will be created automatically.
*
* <p>
* The syntax of the <code>columnList</code> element is a
* <p>
* The syntax of the <code>columnList</code> element is a
* <code>column_list</code>, as follows:
*
*
* <pre>
* column::= index_column [,index_column]*
* index_column::= column_name [ASC | DESC]
* </pre>
*
* <p> If <code>ASC</code> or <code>DESC</code> is not specified,
* <code>ASC</code> (ascending order) is assumed.
*
* @see Table
* @see SecondaryTable
* @see CollectionTable
* @see JoinTable
* @see TableGenerator
* <p>
* If <code>ASC</code> or <code>DESC</code> is not specified,
* <code>ASC</code> (ascending order) is assumed.
*
* @since Java Persistence 2.1
*
@@ -51,17 +46,23 @@ public @interface Index {
/**
* (Optional) The name of the index; defaults to a provider-generated name.
*
* @return String
*/
String name() default "";
/**
* (Required) The names of the columns to be included in the index,
* (Required) The names of the columns to be included in the index,
* in order.
*
* @return String
*/
String columnList();
/**
* (Optional) Whether the index is unique.
*
* @return boolean
*/
boolean unique() default false;