/******************************************************************************* | |
* Copyright (c) 2011, 2013 Oracle and/or its affiliates. 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: | |
* 03/24/2011-2.3 Guy Pelletier | |
* - 337323: Multi-tenant with shared schema support (part 1) | |
******************************************************************************/ | |
package org.eclipse.persistence.annotations; | |
import java.lang.annotation.Retention; | |
import java.lang.annotation.Target; | |
import javax.persistence.DiscriminatorType; | |
import static java.lang.annotation.ElementType.TYPE; | |
import static java.lang.annotation.RetentionPolicy.RUNTIME; | |
/** | |
* Tenant discriminator column(s) are used with a SINGLE_TABLE multitenant | |
* strategy. Tenant discriminator column(s) are completely user specified and | |
* there is no limit on how many tenant discriminator columns an application | |
* can define (using the TenantDiscriminatorColumns annotation) | |
* | |
* Tenant discriminator column(s) can be specified at the Entity or | |
* MappedSuperclass level and must always be accompanied with a | |
* Multitenant(SINGLE_TABLE) specification. It is not sufficient to specify | |
* only tenant discriminator column(s). | |
* | |
* @see org.eclipse.persistence.annotations.TenantDiscriminatorColumns | |
* @see org.eclipse.persistence.annotations.Multitenant | |
* @see org.eclipse.persistence.annotations.MultitenantType | |
* | |
* @author Guy Pelletier | |
* @since EclipseLink 2.3 | |
*/ | |
@Target({TYPE}) | |
@Retention(RUNTIME) | |
public @interface TenantDiscriminatorColumn { | |
/** | |
* (Optional) The name of column to be used for the tenant discriminator. | |
*/ | |
String name() default "TENANT_ID"; | |
/** | |
* (Optional) The name of the context property to apply to the | |
* tenant discriminator column. | |
*/ | |
String contextProperty() default "eclipselink.tenant-id"; | |
/** | |
* (Optional) The type of object/column to use as a class discriminator. | |
* Defaults to {@link DiscriminatorType#STRING DiscriminatorType.STRING}. | |
*/ | |
DiscriminatorType discriminatorType() default DiscriminatorType.STRING; | |
/** | |
* (Optional) The SQL fragment that is used when generating the DDL | |
* for the discriminator column. | |
* <p> Defaults to the provider-generated SQL to create a column | |
* of the specified discriminator type. | |
*/ | |
String columnDefinition() default ""; | |
/** | |
* (Optional) The column length for String-based discriminator types. | |
* Ignored for other discriminator types. | |
*/ | |
int length() default 31; | |
/** | |
* (Optional) The name of the table that contains the column. | |
* If absent the column is assumed to be in the primary table. | |
*/ | |
String table() default ""; | |
/** | |
* Specifies that the tenant discriminator column is part of the primary | |
* key of the tables. | |
*/ | |
boolean primaryKey() default false; | |
} | |