Intershop 7.10代码生成器备用密钥生成 - NONUNIQUE

Question

我们在Intershop DB中注意到，从7.9版本迁移到7.10版本时，备用密钥的索引不会生成为UNIQUE INDEX。这导致所有包含备用键（系统和自定义对象）的表都使用数据库中的NONUNIQUE索引生成。例如：

此外，生成.ddl文件代码（CatalogCategoryLinkPO.dbindex.oracle.ddl）：

/*
 =============================================================================
 File: CatalogCategoryLinkPO.dbindex.oracle.ddl
 Generated by JGen Code Generator from INTERSHOP Communications AG.
 =============================================================================
 The JGen Code Generator software is the property of INTERSHOP Communications AG. 
 Any rights to use are granted under the license agreement. 
 =============================================================================
 */

SET ECHO ON

SET SERVEROUTPUT ON SIZE 1000000

VARIABLE table_space      VARCHAR2(50)
VARIABLE recreate_indexes NUMBER;

EXEC :table_space := '&index_tablespace';
EXEC :recreate_indexes := '&recreate_indexes';

PROMPT /* Class com.intershop.beehive.xcs.internal.catalog.CatalogCategoryLinkPO */
PROMPT -- Foreign key indices
EXEC staging_ddl.create_index('CATALOGCATEGORYLINK_FK999', 'CATALOGCATEGORYLINK', '(TARGETCATEGORYID)', :table_space, 'NONUNIQUE', :recreate_indexes);
EXEC staging_ddl.create_index('CATALOGCATEGORYLINK_FK998', 'CATALOGCATEGORYLINK', '(SOURCECATEGORYID)', :table_space, 'NONUNIQUE', :recreate_indexes);


PROMPT -- Foreign key indices (dependencies)
EXEC staging_ddl.create_index('CATALOGCATEGORYLINK_FK997', 'CATALOGCATEGORYLINK', '(DOMAINID)', :table_space, 'NONUNIQUE', :recreate_indexes);


PROMPT -- Inversion Entry key indices
EXEC staging_ddl.create_index('CATALOGCATEGORYLINK_IE001', 'CATALOGCATEGORYLINK', '(TYPECODE)', :table_space, 'NONUNIQUE', :recreate_indexes);
EXEC staging_ddl.create_index('CATALOGCATEGORYLINK_IE002', 'CATALOGCATEGORYLINK', '(SOURCECATEGORYID,TARGETCATEGORYID,DOMAINID,TYPECODE)', :table_space, 'UNIQUE', :recreate_indexes);


PROMPT -- Searchable attribute indices
EXEC staging_ddl.create_index('CATALOGCATEGORYLINK_IE999', 'CATALOGCATEGORYLINK', '(DOMAINID)', :table_space, 'NONUNIQUE', :recreate_indexes);


EXEC staging_ddl.create_index('CATALOGCATEGORYLINK_AK001', 'CATALOGCATEGORYLINK', '(SOURCECATEGORYID,TARGETCATEGORYID,DOMAINID,TYPECODE)', :table_space, 'NONUNIQUE', :recreate_indexes);

PROMPT /* Class com.intershop.beehive.xcs.internal.catalog.CatalogCategoryLinkPOAttributeValue */
PROMPT -- Foreign key indices
EXEC staging_ddl.create_index('CATALOGCATEGORYLINK_AV_FK002', 'CATALOGCATEGORYLINK_AV', '(ownerID)', :table_space, 'NONUNIQUE', :recreate_indexes);

PROMPT -- Inversion Entry key indices
EXEC staging_ddl.create_index('CATALOGCATEGORYLINK_AV_IE002', 'CATALOGCATEGORYLINK_AV', '(intValue)', :table_space, 'NONUNIQUE', :recreate_indexes);
EXEC staging_ddl.create_index('CATALOGCATEGORYLINK_AV_IE003', 'CATALOGCATEGORYLINK_AV', '(doubleValue)', :table_space, 'NONUNIQUE', :recreate_indexes);

当我们尝试为自己的自定义实现对象创建备用密钥时，会发生同样的事情。例如，这是.edl代码段：

orm class A1PromotionBenefitPO extends PersistentObjectPO implements A1PromotionBenefit table "A1PromotionBenefit"
    {
        /**
         * Declare alternate key.
         */
        alternate key (promotionUUID, tariffUUID, contractType, contractBinding, domainID);

        /**
         * Holds link to tariff.
         */
        attribute tariffUUID : uuid required searchable;

        /**
         * Holds link to promotion.
         */
        attribute promotionUUID: uuid required;
....
...

这是生成的.ddl文件（A1PromotionBenefitPO.dbindex.oracle.ddl）：

/*
 =============================================================================
 File: A1PromotionBenefitPO.dbindex.oracle.ddl
 Generated by JGen Code Generator from INTERSHOP Communications AG.
 =============================================================================
 The JGen Code Generator software is the property of INTERSHOP Communications AG. 
 Any rights to use are granted under the license agreement. 
 =============================================================================
 */

SET ECHO ON

SET SERVEROUTPUT ON SIZE 1000000

VARIABLE table_space      VARCHAR2(50)
VARIABLE recreate_indexes NUMBER;

EXEC :table_space := '&index_tablespace';
EXEC :recreate_indexes := '&recreate_indexes';

PROMPT /* Class hr.a1.orm.promotion.internal.A1PromotionBenefitPO */
PROMPT -- Foreign key indices
EXEC staging_ddl.create_index('A1PROMOTIONBENEFIT_FK999', 'A1PROMOTIONBENEFIT', '(DISCOUNTUUID)', :table_space, 'NONUNIQUE', :recreate_indexes);
EXEC staging_ddl.create_index('A1PROMOTIONBENEFIT_FK998', 'A1PROMOTIONBENEFIT', '(PROMOTIONUUID)', :table_space, 'NONUNIQUE', :recreate_indexes);


PROMPT -- Foreign key indices (dependencies)
EXEC staging_ddl.create_index('A1PROMOTIONBENEFIT_FK997', 'A1PROMOTIONBENEFIT', '(DOMAINID)', :table_space, 'NONUNIQUE', :recreate_indexes);
EXEC staging_ddl.create_index('A1PROMOTIONBENEFIT_FK996', 'A1PROMOTIONBENEFIT', '(TARIFFUUID)', :table_space, 'NONUNIQUE', :recreate_indexes);


PROMPT -- Inversion Entry key indices
EXEC staging_ddl.create_index('A1PROMOTIONBENEFIT_IE001', 'A1PROMOTIONBENEFIT', '(PROMOTIONUUID,TARIFFUUID,CONTRACTTYPE,CONTRACTBINDING,DOMAINID)', :table_space, 'UNIQUE', :recreate_indexes);


PROMPT -- Searchable attribute indices
EXEC staging_ddl.create_index('A1PROMOTIONBENEFIT_IE999', 'A1PROMOTIONBENEFIT', '(DOMAINID)', :table_space, 'NONUNIQUE', :recreate_indexes);
EXEC staging_ddl.create_index('A1PROMOTIONBENEFIT_IE998', 'A1PROMOTIONBENEFIT', '(TARIFFUUID)', :table_space, 'NONUNIQUE', :recreate_indexes);


EXEC staging_ddl.create_index('A1PROMOTIONBENEFIT_AK001', 'A1PROMOTIONBENEFIT', '(PROMOTIONUUID,TARIFFUUID,CONTRACTTYPE,CONTRACTBINDING,DOMAINID)', :table_space, 'NONUNIQUE', :recreate_indexes);

如您所见，备用键索引A1PROMOTIONBENEFIT_AK001生成为NONUNIQUE。

你知道为什么会这样吗？我们的代码依赖于备用密钥，因此我们不希望从我们的orm模型中完全删除备用密钥。