我正在尝试在文档 XML 插入到 ORACLE 数据库中的表中期间对其进行验证。我已经在我的表中定义了具有此架构的XML模式和XMLTYPE,但是数据库允许我插入错误的xml。
我的架构:
BEGIN
dbms_xmlschema.registerschema(
schemaurl => 'http://www.testXml.com/schema.xsd',
schemadoc => xmltype('<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:complexType name="Name_tp">
<xs:simpleContent>
<xs:extension base="xs:string">
<xs:attribute name="Id" type="xs:positiveInteger"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:complexType name="Category_tp">
<xs:attribute name="NumPrize" type="xs:positiveInteger"/>
<xs:attribute name="From" type="xs:integer"/>
<xs:attribute name="To" type="xs:positiveInteger"/>
<xs:attribute name="Type" type="xs:string"/>
<xs:attribute name="Age" type="xs:positiveInteger"/>
</xs:complexType>
<xs:complexType name="Match_tp">
<xs:attribute name="typeMatch" type="xs:string"/>
</xs:complexType>
<xs:complexType name="GolfCompetition_tp">
<xs:sequence>
<xs:element name="Name" type="Name_tp"/>
<xs:element name="Date" type="xs:date"/>
<xs:element name="Sponsor" type="xs:string"/>
<xs:element name="Category" maxOccurs="unbounded" type="Category_tp"/>
<xs:element name="Reserved" type="Match_tp" minOccurs="0"/>
</xs:sequence>
</xs:complexType>
<xs:element name="GolfCompetition" type="GolfCompetition_tp"/>
</xs:schema>'),
local => true,
gentypes => false,
gentables => false
);
END;
我的数据库架构:
CREATE TYPE t_gara AS OBJECT (
id INTEGER,
informazioni XMLTYPE
);
CREATE TABLE gara OF t_gara () XMLType COLUMN informazioni
XMLSCHEMA "http://www.testXml.com/schema.xsd"
ELEMENT "GolfCompetition";
当我尝试插入此行时,我没有问题:
INSERT INTO GARA VALUES(1, XMLType('<GolfCompetition>
<Name Id="324">Coppa del Presidente</Name>
<Date>2009-12-25</Date>
<Sponsor>Lavazza S.p.A</Sponsor>
<Category NumPrize="3" From="0" To="12" Type="First"/>
<Category NumPrize="3" From="13" To="24" Type="Second"/>
<Category NumPrize="2" From="25" To="36" Type="Third"/>
<Category NumPrize="1" Type="Lady"/>
<Category NumPrize="1" Type="Over" Age="40"/>
</GolfCompetition>'));
但这适用于:
INSERT INTO GARA VALUES(2, XMLType('<GolfCompetition>
<Category NumPrize="3" From="0" To="12" Type="First"/>
<Category NumPrize="3" From="13" To="24" Type="Second"/>
<Category NumPrize="2" From="25" To="36" Type="Third"/>
<Category NumPrize="1" Type="Lady"/>
<Category NumPrize="1" Type="Over" Age="40"/>
</GolfCompetition>'));
我该如何解决?
自动架构验证要求以二进制格式存储 XML,而不是以对象关系格式存储。
来自 XML 开发人员指南:
对于以对象关系方式存储的 XMLType 数据,完全验证 需要构建 DOM,这在内存方面可能很昂贵 管理。因此,Oracle XML DB 不会自动 插入或更新存储的数据时执行完全验证 对象关系。
重新注册架构,添加以下参数:
...
options => dbms_xmlschema.REGISTER_BINARYXML
...
创建如下表:
create table gara
(
id number,
informazioni xmltype
) xmltype informazioni
store as binary xml
XMLSCHEMA "http://www.testXml.com/schema.xsd"
ELEMENT "GolfCompetition";
现在第一个插入将起作用,但第二个插入将失败并出现此错误:
ORA-64464: XML event error
ORA-19202: Error occurred in XML processing
LSX-00213: only 0 occurrences of particle "Name", minimum is 1