扩展 nms:recipient 架构收件人表,请应用以下过程:
创建扩展架构(cus:extension):
<srcSchema mappingType="sql" name="extension" namespace="cus" xtkschema="xtk:srcSchema" extendedSchema="nms:recipient">
<enumeration basetype="string" default="area1" name="area">
<value label="Zone 1" name="area1"/>
<value label="Zone 2" name="area2"/>
</enumeration>
<element name="extension">
<dbindex name="area">
<keyfield xpath="location/@area"/>
</dbindex>
<attribute label="Loyalty code" name="fidelity" type="long"/>
<element name="location">
<attribute name="area" label="Purchasing zone" type="string" length="50" enum="area"/>
</element> </element>
</srcSchema>
在本例中,索引字段(保真度),并且 位置 元素(已存在于 nms:recipient 模式)以枚举字段(面积)。
请记住,在 extendedSchema 属性来引用扩展架构。
检查扩展架构是否为 nms:recipient 架构,并且存在附加数据:
<schema dependingSchemas="cus:extension" mappingType="sql" name="recipient" namespace="nms" xtkschema="xtk:schema">
...
<enumeration basetype="string" default="area1" name="area">
<value label="Zone 1" name="area1"/>
<value label="Zone 2" name="area2"/>
</enumeration>
...
<element autopk="true" name="recipient" sqltable="NmsRecipient">
<dbindex name="area">
<keyfield xpath="location/@area"/>
</dbindex>
...
<attribute belongsTo="cus:extension" label="Loyalty code" name="fidelity" sqlname="iFidelity" type="long"/>
<element name="location">
...
<attribute enum="area" label="Purchasing zone" length="50" name="area" sqlname="sArea" type="string"/>
</element>
...
</element>
</schema>
从数据库更新向导生成的SQL脚本如下所示:
ALTER TABLE NmsRecipient ADD iFidelity INTEGER;
UPDATE NmsRecipient SET iFidelity = 0;
ALTER TABLE NmsRecipient ALTER COLUMN iFidelity SET NOT NULL;ALTER TABLE NmsRecipient ALTER COLUMN iFidelity SET Default 0;
ALTER TABLE NmsRecipient ADD sArea VARCHAR(50);
CREATE INDEX NmsRecipient_area ON NmsRecipient(sArea);
本节介绍如何使用基数1-N创建链接到收件人表的订单表。
订单表来源架构:
<srcSchema label="Order" name="order" namespace="cus" xtkschema="xtk:srcSchema">
<element autopk="true" name="order">
<compute-string expr="@number" + '(' + ToString(@date) + ')'/>
<attribute label="Number" length="128" name="number" type="string"/>
<attribute desc="Order date" label="Date" name="date" type="datetime" default="GetDate()"/>
<attribute desc="order total" label="Total" name="total" type="double"/>
<element label="Recipient" name="recipient" revDesc="Orders associated with this recipient" revIntegrity="own" revLabel="Orders" target="nms:recipient" type="link"/>
</element>
</srcSchema>
表类型为 奥托普 以创建自动生成的主密钥,该主密钥将用于链接到收件人表的连接。
生成的架构:
<schema label="Order" mappingType="sql" name="order" namespace="cus" xtkschema="xtk:schema">
<element autopk="true" label="Order" name="order" sqltable="CusOrder">
<compute-string expr="ToString(@date) + ' - ' + @number"/>
<dbindex name="id" unique="true">
<keyfield xpath="@id"/>
</dbindex>
<key internal="true" name="id">
<keyfield xpath="@id"/>
</key>
<dbindex name="recipientId">
<keyfield xpath="@recipient-id"/>
</dbindex>
<attribute desc="Internal primary key" label="Primary key" name="id" sqlname="iOrderId" type="long"/>
<attribute label="Number" length="128" name="number" sqlname="sNumber" type="string"/>
<attribute desc="Order date" label="Date" name="date" sqlname="tsDate" type="datetime"/>
<attribute desc="order total" label="Total" name="total" sqlname="Total" type="double"/>
<element label="Recipient" name="recipient" revLink="order" target="nms:recipient" type="link">
<join xpath-dst="@id" xpath-src="@recipient-id"/>
</element>
<attribute advanced="true" label="Foreign key of 'Recipient' link ('id' field)" name="recipient-id" sqlname="iRecipientId" type="long"/>
</element>
</schema>
表创建SQL脚本如下所示:
CREATE TABLE CusOrder(dTotal DOUBLE PRECISION NOT NULL Default 0, iOrderId INTEGER NOT NULL Default 0, iRecipientId INTEGER NOT NULL Default 0, sNumber VARCHAR(128), tsDate TIMESTAMP Default NULL);
CREATE UNIQUE INDEX CusOrder_id ON CusOrder(iOrderId);
CREATE INDEX CusOrder_recipientId ON CusOrder(iRecipientId);
INSERT INTO CusOrder (iOrderId) VALUES (0);
在脚本末尾的SQL命令INSERT INTO允许您插入标识符记录集为0以模拟外连接。
扩展表允许您扩展基数1-1链接表中现有表的内容。
扩展表的用途是避免对表中支持的字段数设置限制,或优化数据所占用的空间(按需使用)。
创建扩展表模式(cus:feature):
<srcSchema mappingType="sql" name="feature" namespace="cus" xtkschema="xtk:srcSchema">
<element autopk="true" name="feature">
<attribute label="Children" name="children" type="byte"/>
<attribute label="Single" name="single" type="boolean"/>
<attribute label="Spouse first name" length="100" name="spouseFirstName" type="string"/>
</element>
</srcSchema>
在收件人表上创建扩展模式以添加基数1-1链接:
<srcSchema extendedSchema="nms:recipient" label="Recipient" mappingType="sql" name="recipient" namespace="cus" xtkschema="xtk:srcSchema">
<element name="recipient">
<element desc="Features" integrity="own" label="Features" name="feature" revCardinality="single" revLink="recipient" target="cus:feature" type="link"/>
</element>
</srcSchema>
收件人表和扩展表之间链接的定义必须使用包含外键的架构进行填充。
用于创建扩展表的SQL脚本如下所示:
CREATE TABLE CusFeature( iChildren NUMERIC(3) NOT NULL Default 0, iFeatureId INTEGER NOT NULL Default 0, iSingle NUMERIC(3) NOT NULL Default 0, sSpouseFirstName VARCHAR(100));
CREATE UNIQUE INDEX CusFeature_id ON CusFeature(iFeatureId);
INSERT INTO CusFeature (iFeatureId) VALUES (0);
收件人表SQL更新脚本如下所示:
ALTER TABLE NmsRecipient ADD iFeatureId INTEGER;
UPDATE NmsRecipient SET iFeatureId = 0;
ALTER TABLE NmsRecipient ALTER COLUMN iFeatureId SET NOT NULL;
ALTER TABLE NmsRecipient ALTER COLUMN iFeatureId SET Default 0;
CREATE INDEX NmsRecipient_featureId ON NmsRecipient(iFeatureId);
溢出表是扩展表(基数1-1),但在溢出表的模式中填充了指向要扩展表的链接声明。
溢出表包含要扩展的表的外键。 因此,不会修改要扩展的表。 两个表之间的关系是要扩展的表的主键的值。
创建溢出表模式(cus:overflow):
<srcSchema label="Overflow" name="overflow" namespace="cus" xtkschema="xtk:srcSchema">
<element name="overflow">
<key internal="true" name="id">
<keyfield xlink="recipient"/>
</key>
<attribute label="Children" name="children" type="byte"/>
<attribute label="Single" name="single" type="boolean"/>
<attribute label="Spouse first name" length="100" name="spouseFirstName" type="string"/>
<element label="Customer" name="recipient" revCardinality="single" revIntegrity="own" revExternalJoin="true" target="nms:recipient" type="link"/>
</element>
</srcSchema>
溢出表的主键是指向要扩展的表的链接(示例中为“nms:recipient”模式)。
表创建SQL脚本如下所示:
CREATE TABLE CusOverflow(iChildren NUMERIC(3) NOT NULL Default 0, iRecipientId INTEGER NOT NULL Default 0, iSingle NUMERIC(3) NOT NULL Default 0, sSpouseFirstName VARCHAR(100));
CREATE UNIQUE INDEX CusOverflow2_id ON CusOverflow2(iRecipientId);
使用关系表可以将两个表与基数N-N链接起来。此表仅包含要链接的表的外键。
组之间关系表的示例(nms:group)和收件人(nms:recipient)。
关系表的源架构:
<srcSchema name="rcpGrpRel" namespace="cus">
<element name="rcpGrpRel">
<key internal="true" name="id">
<keyfield xlink="rcpGroup"/>
<keyfield xlink="recipient"/>
</key>
<element integrity="neutral" label="Recipient" name="recipient" revDesc="Groups to which this recipient belongs" revIntegrity="own" revLabel="Groups" target="nms:recipient" type="link"/>
<element integrity="neutral" label="Group" name="rcpGroup" revDesc="Recipients in the group" revIntegrity="own" revLabel="Recipients" revLink="rcpGrpRel" target="nms:group" type="link"/>
</element>
</srcSchema>
生成的架构如下所示:
<schema mappingType="sql" name="rcpGrpRel" namespace="cus" xtkschema="xtk:schema">
<element name="rcpGrpRel" sqltable="CusRcpGrpRel">
<compute-string expr="ToString([@rcpGroup-id]) + ',' + ToString([@recipient-id])"/>
<dbindex name="id" unique="true">
<keyfield xpath="@rcpGroup-id"/>
<keyfield xpath="@recipient-id"/>
</dbindex>
<key internal="true" name="id">
<keyfield xpath="@rcpGroup-id"/>
<keyfield xpath="@recipient-id"/>
</key>
<dbindex name="rcpGroupId">
<keyfield xpath="@rcpGroup-id"/>
</dbindex>
<dbindex name="recipientId">
<keyfield xpath="@recipient-id"/>
</dbindex>
<element integrity="neutral" label="Recipient" name="recipient" revLink="rcpGrpRel" target="nms:recipient" type="link">
<join xpath-dst="@id" xpath-src="@recipient-id"/>
</element>
<attribute advanced="true" label="Foreign key of 'Recipient' link ('id' field)" name="recipient-id" sqlname="iRecipientId" type="long"/>
<element integrity="neutral" label="Group" name="rcpGroup" revLink="rcpGrpRel" target="nms:group" type="link">
<join xpath-dst="@id" xpath-src="@rcpGroup-id"/>
</element>
<attribute advanced="true" label="Foreign key of 'Group' link ('id' field)" name="rcpGroup-id" sqlname="iRcpGroupId" type="long"/>
</element>
</schema>
表创建SQL脚本如下所示:
CREATE TABLE CusRcpGrpRel( iRcpGroupId INTEGER NOT NULL Default 0, iRecipientId INTEGER NOT NULL Default 0);
CREATE UNIQUE INDEX CusRcpGrpRel_id ON CusRcpGrpRel(iRcpGroupId, iRecipientId);
CREATE INDEX CusRcpGrpRel_recipientId ON CusRcpGrpRel(iRecipientId);
此用例演示了如何使用现有引用表作为内置Adobe Campaign枚举机制(enum、userEnum或dbEnum)的替代方法。
您还可以将现有引用表用作架构中的枚举。 这可以通过在表和参考表之间创建链接并添加属性来实现 displayAsField="true".
在本例中,参考表包含银行名称和标识符列表:
<srcSchema entitySchema="xtk:srcSchema" img="cus:bank16x16.png" label="Bank" mappingType="sql" name="bank" namespace="cus"
xtkschema="xtk:srcSchema">
<element img="cus:bank16x16.png" label="Banks" name="bank">
<compute-string expr="@name"/>
<key name="id">
<keyfield xpath="@id"/>
</key>
<attribute label="Bank Id" name="id" type="short"/>
<attribute label="Name" length="64" name="name" type="string"/>
</element>
</srcSchema>
在使用此参考表的任何表中,定义链接并添加 displayAsField="true" 属性。
<element displayAsField="true" label="Bank" name="bank" target="cus:bank" type="link" noDbIndex="true"/>
用户界面不会显示链接,而会显示字段。 当用户选择该字段时,他们可以从参考表中选择一个值或使用自动完成功能。
要使其自动完成,必须在引用表中定义计算字符串。
添加 noDbIndex="true" 属性,以防止Adobe Campaign根据链接源表中存储的值创建索引。