XML schema together with XHTML
Hi there,
I have the following situation:
I want to create an XML document that contains 2 parts:
a) a XHTML part (it can be either version 1.0 or 1.1 )
b) a non XHTML part that contains some information about the first part - like the location of that content or some other info on different constituents of the first part
The elements of the second part are defined by an XML schema.
My question is how to do this in an elegant manner?
Should I import somehow (I have no idea how) the XHTML schema on the part 2 schema? Or should I deal only on the instance XML file with this issue (if yes - how)?
Thanks a lot for the help.
Daniel
Download the newest version at http://xml.apache.org
and try again...Unfortunately I'm already using the latest version. It just doesn't seem to work.
Similar Messages
-
Add new nodes to IDoc in IDoc-XML Schema Mapping with Java
Hello everyone, I'm not very sure if this is the right forum but I have a problem and I haven't being able to find the answer, my scenario is as follows:
-First of all our system characteristics: SAP ECC 6.0, SAP BASIS 700, PI BASIS 2005-1-700 and SAP APPL 600
-We are in Mexico and we are creating our own billing documents with digital signature and a digital certificate in XML format according to SAP Note 1303712 and all derived notes.
-Our actual schema is working fine: We generate our IDocs (one for SD and one for FI) in SAP and we send them to PI XI to be parsed by a JAVA program and then converted to XML.
Now we have the requirement to add new nodes (I might be wrong in the term, feel free to correct me) to the IDoc, it sounds very simple but I have only experience with ABAP and no experience with PI, also it's working only on our production landscape, so if I don't do it right it could be very dangerous.
I have already read the following notes that might help me: 1321680 and 1318342 but their configuration is just in the aplication server and don't mention anything about PI or the Java program.
So, if any one could provide me some kind of guide or important aspects that I should take care (like mapping, structures, etc) to enhance IDocs for this schema i would be very grateful.
I hope this post were clear enough, if it is not also feel free to ask me to clarify or provide more information.
Kind Regards
OmarHi Omar,
Since the structure of the IDoc is changing (adding a new node), you would need to do the following in PI:
1) Reimport the IDoc in ESR/IR of PI.
2) Change the mapping/transformation logic in the mapping parser defined. If it is a Java code, you would need to reimport it in the ESR/IR. Use link below to understand more on jave mapping.
http://wiki.sdn.sap.com/wiki/display/XI/BeginnersguidetoJavamappingusingDOMparserinSAPXI
3) Delete the IDoc cache using transaction IDX2, after the IDoc is reimported.
Regards,
Sanjeev. -
Has anybody tried creating and validating a XML doc with XML Schema?
Hi,
Has anybody tried creating and validating a XML doc with XML Schema?With XMLBeans, an XML document may be created from and validated with an XML schema.
-
i am new to xml . i using oracle 11g.while reading xml i came to know that xml schema registration.
is it compulsary to work with xml data.what is the advantages of xml schema registration. with out registration also i am able to create xmltype tables and i am able to fetch data from tables. then what is the purpose of schema registration
schema registration means what happening exactly.Schema Registration typically leads to better performance. With Binary XML / XML Index the differences are not critical for most applications. It also allows for better datatyping and compression, since if we tags and datatypes in advance we do do a more efficient encoding. For certain classes of applicaiton, where the object relational storage model is appropraite schema registration can lead to significantly better performance. See the XML DB basic demo for more info and the Hands on Lab for info related to Binary XML and XML Index
-
Reregister modified XML Schema
I have some XML Schemas registered with my oracle 10g database. The types are created, but not the tables.
Now I have a change in field length in one of the Schemas and I need to reregister it. All the other schemas are dependent on this modified schema.
I used the following approach to delete the schema and register it.
dbms_xmlschema.deleteschema(schemaurl => 'my url',
delete_option => dbms_xmlschema.DELETE_CASCADE_FORCE);
dbms_xmlschema.registerschema(schemaurl => 'my url',
schemadoc => BFILENAME(SCHEMADIR, 'schema_name'),
local=>true,
genTypes=>true,
genbean=>false,
genTables=>false,
force=>false);
This successfully registered the schema.
But whenever the database is restarted, I face a dangling ref error whenever I try to access the OOT created for the Schema.
Any pointers on this will be of great help. Is this the right approach?
Also I read about dbms_xmlschema.copyevolve() procedure. I only need the types, so I am not interested in any transformations as I dont have any instance documents.The last problem regarding dangling ref's on this forum ended up in creating an SR with support...
Before you register the schema you could set an event that will trace all statements that are executed in the "background" and stored in a trace file in the UDUMP directory
ALTER session SET events = '31098 trace name context forever';It is also always useful to check the database alert.log for errors...
Edited by: Marco Gralike on Nov 19, 2008 9:23 PM -
Can't validate against XML Schema take 2
Hi,
A few weeks ago I posted a message asking how an XML Schema file should be deployed
in a web application. During 15 days I recived a lot of replies to questions I
didn't ask but none to the question I asked. I recall that the XML Schema file
is deployed with the web application in WEB-INF. I tried also WEB-INF/classes
and WEB_INF/lib. The XML SChema file is not found. So I'm asking again: how is
one supposed to deploy an XML Schema file in a Web application ?
Kind regards,
Nicolas DUMINILHi :-)
Yes it does, in the DomHandler.java it serializes to XML then does the
reparse with validation.
BTW, I realized that I left out of the zip the xsd file. It is
attached. Note also the bar.xml is using this schema from
http://localhost
You also have another alternative: employ a parser-specific extension to
do the revalidation. Xerces' extension appears to be early support for
nonfinal DOM Level 3, which supports this as part of "normalizing" a DOM
tree. See http://xml.apache.org/xerces2-j/faq-dom.html#faq-7.
Good luck in your continuing efforts,
Bruce
Nicolas DUMINIL wrote:
>
Bruce,
The example you attached doesn't do any schema validation, as you seem thinking.
In order to do schema validation, one needs at least a schema, as an XSD file.
Or the example you provided doesn't contain any schema, at least I didn't see
any, maybe I'm blind. The example you provided is only doing parsing and, consequently,
it doesn't have anything to do with the problem I posted. Thank you for your time
but honestly, don't feel obligated to just reply anything if you don't have the
answer or you don't understand the problem.
Kind regards,
Nicolas DUMINIL
Bruce Stephens <[email protected]> wrote:
Hello,
To obtain information from our outstanding support team you need to open
a communication dialog using the support portal or email. The
newsgroups are informally maintained by volunteers (typically
development engineers), are not maintained by customer support, and
provide no guarantee for response time or problem resolution.
Attached is a simple web service example that does schema validation.
See if this works OK in your environment.
Hope this is of some value,
Bruce
Nicolas DUMINIL wrote:
I went on http://support.bea.com but there is no any usefull information.
I took
a look in the examples you suggested and I found out that it simplydoesn't have
anything to do with the problem I mentioned. My problem is validatingXML documents
against an XML Schema. As I repeted at least 10 times:
1. I know how to parse XML documents.
2. I know how to use DTDs in validating XML documents.
3. I also have all the information concerning the XML Schema validationand I
know how to configure the parser for that.
The problem I have is that my XML Schema deployed with the applicationis not
found. It i not on the CLASSPATH, it is deployed with the applicationas any application
component.
Kr,
Nicolas DUMINIL
Bruce Stephens <[email protected]> wrote:
Hello,
Since this has been an ongoing issue, the best solution at this point
may be to open a dialog with our outstanding support group:
http://support.bea.com or [email protected]
BTW, you also may want to take a quick look at the example provided:
http://dev2dev.bea.com/codelibrary/code/examples_xml.jsp
Hope this is of some value,
Bruce
Nicolas DUMINIL wrote:
Hi,
A few weeks ago I posted a message asking how an XML Schema file
should
be deployed
in a web application. During 15 days I recived a lot of replies
to
questions I
didn't ask but none to the question I asked. I recall that the XMLSchema file
is deployed with the web application in WEB-INF. I tried also WEB-INF/classes
and WEB_INF/lib. The XML SChema file is not found. So I'm asking
again:
how is
one supposed to deploy an XML Schema file in a Web application ?
Kind regards,
Nicolas DUMINIL
[simple.xsd] -
How to load an XML schema with Data Integrator ?
Post Author: Kris Van Belle
CA Forum: Data Integration
Is someone having experience with loading data from a regular table into an XML schema ?
What are exactly the steps to undertake ? The DI user manual does not provide that much information...Post Author: bhofmans
CA Forum: Data Integration
Hi Kris,
In the Designer.pdf there is a chapter called 'nested data' with more information, but you can also check this website with some detailed instructions and examples on how to build a nested relational data model (NRDM).
http://www.consulting-accounting.com/time/servlet/ShowPage?COMPANYID=43&ELEMENTID=161
(Thanks to Werner Daehn for putting this together). -
Hi all,
I just got a copy of the book "Pro SQL Server 2008 XML" written by Michael Coles (published by Apress) and try to learn the XML Schema Collection in my SQL Server 2012 Management Studio (SSMS2012). I studied Chapter 4 XML Collection of the book
and executed the following code of Listing 4-8 Complex Schema with Attribute:
-- Pro SQL Server 2008 XML by Michael Coles (Apress)
-- Listing04-08.sql Complex XML Schema with Attribute
-- shcColes04-08.sql saved in C:\\Documents\XML_SQL_Server2008_code_Coles_Apress
-- 6 April 2015 8:00 PM
CREATE XML SCHEMA COLLECTION dbo.ComplexTestSchemaCollection_attribute
AS
N'<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="item">
<xs:complexType>
<xs:sequence>
<xs:element name="name" />
<xs:element name="color" />
<xs:group ref="id-price" />
<xs:group ref="size-group" />
</xs:sequence>
<xs:attribute name="id" />
<xs:attribute name="number" />
</xs:complexType>
</xs:element>
<xs:group name="id-price">
<xs:choice>
<xs:element name="list-price" />
<xs:element name="standard-cost" />
</xs:choice>
</xs:group>
<xs:group name="size-group">
<xs:sequence>
<xs:element name="size" />
<xs:element name="unit-of-measure" />
</xs:sequence>
</xs:group>
</xs:schema>';
GO
DECLARE @x XML (dbo.ComplexTestSchemaCollection_attribute);
SET @x = N'<?xml version="1.0"?>
<item id="749" number="BK-R93R-62">
<name>Road-150 Red, 62</name>
<color>Red</color>
<list-price>3578.27</list-price>
<size>62</size>
<unit-of-measure>CM</unit-of-measure>
</item>';
SELECT @x;
GO
DROP XML SCHEMA COLLECTION dbo.ComplexTestSchemaCollection_attribute;
It worked nicely. But, I just found out the coding that was downloaded from the website of Apress and I just executed was different from the coding of Listing 4-8 listed in the book: all the <xs: ....> and </xs: ..> in my SSMS2012 are
listed as <xsd:...> and </xsd:...> respectively in the book!!?? The same thing happens in the Listing 4-3 Simple XML Schema, Listing 4-5 XML Schema and Valid XML Document with Comple Type Definition, Listion 4-6 XML Schema and XML
Document Document with Complex Type Using <sequence> and <choice>, and Listing 4-7 Complex XML Schema and XML Document with Model Group Definition (I executed last week) too. I wonder: should xs or xsd be used in the XML
Schema Collection of SSMS2012? Please kindly help, clarify this matter and explain the diffirence of using xs and xsd for me.
Thanks in advance,
Scott ChangHi Scott,
Using xs or xsd depends on how you declare the namespace prefix.
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="item">
I've posted a very good link in your last question, just in case you might have missed it, please see the below link.
Understanding XML Namespaces
In an XML document we use a namespace prefix to qualify the local names of both elements and attributes . A prefix is really just an abbreviation for the namespace identifier (URI), which is typically quite long. The prefix is first mapped to a namespace
identifier through a namespace declaration. The syntax for a namespace declaration is:
xmlns:<prefix>='<namespace identifier>'
If you have any question, feel free to let me know.
Eric Zhang
TechNet Community Support -
Can't import XML schema with ref to external namespace
In TopLink 10.1.3 Dev Preview 3 (build 041116), I have 2 simple schema files. One defines an element as a ref to an element in the other schema, so the ref points to an element in an external namespace. TopLink won't import this schema.
First schema, imports fine:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.oracle.com/employee"
xmlns="http://www.oracle.com/employee"
elementFormDefault="qualified"
attributeFormDefault="unqualified">
<xs:element name="employee">
<xs:complexType>
<xs:sequence>
<xs:element name="name" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
Second schema, fails import with "ERROR: null. Please check to ensure the document conforms to the XML Schema specification and try again":
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.oracle.com/department"
xmlns="http://www.oracle.com/department"
xmlns:employee="http://www.oracle.com/employee"
elementFormDefault="qualified"
attributeFormDefault="unqualified">
<xs:import
namespace="http://www.oracle.com/employee"
schemaLocation="employee.xsd"/>
<xs:element name="department">
<xs:complexType>
<xs:sequence>
<xs:element ref="employee:employee" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
Both schemas are valid according to the W3C schema validation checker at http://www.w3.org/2001/03/webdata/xsv.
I can work around the issue by putting the employee definitions into the department schema file so that all elements are in the same namespace. But I would like the schemas to be in separate files for better modularity and maintainability.
Am I doing something wrong? I would really like to be able to use references to external namespaces in my element definitions.
Thanks,
DaveHello David,
Apologies, but this is a bug in DP3 with respect to references to elements in imported namespaces. This has been fixed in current code, but until you get that, there are a couple ways to work around it:
==========================================================
1) Use an include rather than an import.
department.xsd
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
targetNamespace="http://www.oracle.com/department"
xmlns="http://www.oracle.com/department"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified"
attributeFormDefault="unqualified">
<xs:include schemaLocation="employee.xsd"/>
<xs:element name="department">
<xs:complexType>
<xs:sequence>
<xs:element ref="employee" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>employee.xsd
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.oracle.com/department"
xmlns="http://www.oracle.com/department"
elementFormDefault="qualified"
attributeFormDefault="unqualified">
<xs:element name="employee">
<xs:complexType>
<xs:sequence>
<xs:element name="name" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>You should only have to import the parent schema (i.e. department.xsd), as the included document will automatically be built in. Note that this works for imports as well, provided that there aren't nasty bugs blocking the process.
==========================================================
2. Build everything into the same document
department.xsd
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
targetNamespace="http://www.oracle.com/department"
xmlns="http://www.oracle.com/department"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified"
attributeFormDefault="unqualified">
<xs:element name="department">
<xs:complexType>
<xs:sequence>
<xs:element ref="employee" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="employee">
<xs:complexType>
<xs:sequence>
<xs:element name="name" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>Obviously, this one won't work quite as well in some cases.
==========================================================
Until you can get to the latest code, I hope this helps some.
- Paul -
Problem inserting and querying XML data with a recursive XML schema
Hello,
I'm facing a problem with querying XML data that is valid against a recursive XML Schema. I have got a table category that stores data as binary XML using Oracle 11g Rel 2 on Windows XP. The XML Schema is the following:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:complexType name="bold_type" mixed="true">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="bold" type="bold_type"/>
<xs:element name="keyword" type="keyword_type"/>
<xs:element name="emph" type="emph_type"/>
</xs:choice>
</xs:complexType>
<xs:complexType name="keyword_type" mixed="true">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="bold" type="bold_type"/>
<xs:element name="keyword" type="keyword_type"/>
<xs:element name="emph" type="emph_type"/>
<xs:element name="plain_text" type="xs:string"/>
</xs:choice>
</xs:complexType>
<xs:complexType name="emph_type" mixed="true">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="bold" type="bold_type"/>
<xs:element name="keyword" type="keyword_type"/>
<xs:element name="emph" type="emph_type"/>
</xs:choice>
</xs:complexType>
<xs:complexType name="text_type" mixed="true">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="bold" type="bold_type"/>
<xs:element name="keyword" type="keyword_type"/>
<xs:element name="emph" type="emph_type"/>
</xs:choice>
</xs:complexType>
<xs:complexType name="parlist_type">
<xs:sequence>
<xs:element name="listitem" minOccurs="0" maxOccurs="unbounded" type="listitem_type"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="listitem_type">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="parlist" type="parlist_type"/>
<xs:element name="text" type="text_type"/>
</xs:choice>
</xs:complexType>
<xs:element name="category">
<xs:complexType>
<xs:sequence>
<xs:element name="name"/>
<xs:element name="description">
<xs:complexType>
<xs:choice>
<xs:element name="text" type="text_type"/>
<xs:element name="parlist" type="parlist_type"/>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="id"/>
</xs:complexType>
</xs:element>
</xs:schema>I registered this schema and created the category table. Then I inserted a new row using the code below:
insert into category_a values
(XMlElement("category",
xmlattributes('categoryAAA' as "id"),
xmlforest ('ma categ' as "name"),
(xmlelement("description", (xmlelement("text", 'find doors blest now whiles favours carriage tailor spacious senses defect threat ope willow please exeunt truest assembly <keyword> staring travels <bold> balthasar parts attach </bold> enshelter two <emph> inconsiderate ways preventions </emph> preventions clasps better affections comes perish </keyword> lucretia permit street full meddle yond general nature whipp <emph> lowness </emph> grievous pedro')))
The row is successfully inserted as witnessed by the results of row counting. However, I cannot extract data from the table. First, I tried using SqlPlus* which hangs up and quits after a while. I then tried to use SQL Developer, but haven't got any result. Here follow some examples of queries and their results in SQL Developer:
Query 1
select * from category
Result : the whole row is returned
Query 2
select xmlquery('$p/category/description' passing object_value as "p" returning content) from category
Result: "SYS.XMLTYPE"
now I tried to fully respect the nested structure of description element in order to extract the text portion of <bold> using this query
Query 3
select xmlquery('$p/category/description/text/keyword/bold/text()' passing object_value as "p" returning content) from category_a
Result: null
and also tried to extract the text portion of element <text> using this query
Query 4
select xmlquery('$p/category/description/text/text()' passing object_value as "p" returning content) from category_a
Result: "SYS.XMLTYPE".
On the other hand, I noticed, from the result of query 1, that the opening tags of elements keyword and bold are encoded as the less than operator "<". This explains why query 3 returns NULL. However, query 4 should display the text content of <text>, which is not the case.
My questions are about
1. How to properly insert the XML data while preserving the tags (especially the opening tag).
2. How to display the data (the text portion of the main Element or of the nested elements).
The problem about question 1 is that it is quite unfeasible to write a unique insert statement because the structure of <description> is recursive. In other words, if the structure of <description> was not recursive, it would be possible to embed the elements using the xmlelement function during the insertion.
In fact, I need to insert the content of <description> from a source table (called category_a) into a target table (+category_b+) automatically .
I filled category_a using the Saxloader utility from an flat XML file that I have generated from a benchmark. The content of <description> is different from one row to another but it is always valid with regards to the XML Schema. The data is properly inserted as witnessed by the "select * from category_a" instruction (500 row inserted). Besides, the opening tags of the nested elements under <description> are preserved (no "<"). Then I wrote a PL/SQL procedure in which a cursor extracts the category id and category name into varchar2 variables and description into an XMLtype variable from category_a. When I try to insert the values into a category_b, I get the follwing error:
LSX-00213: only 0 occurrences of particle "text", minimum is 1which tells that the <text> element is absent (actually it is present in the source table).
So, my third question is why are not the tags recognized during the insertion?
Can anyone help please?Hello,
indded, I was using an old version of Sqlplus* (8.0.60.0.0) because I had a previous installation (oracle 10g XE). Instead, I used the Sqlplus* shipped with the 11g2database (version 11.2.0.1.0). All the queries that I wrote work fine and display the data correctly.
I also used the XMLSERIALIZE function and can now display the description content in SQL Developer.
Thank you very much.
To answer your question Marco, I registered the XML Schema using the following code
declare
doc varchar2(4000) := '<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:complexType name="bold_type" mixed="true">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="bold" type="bold_type"/>
<xs:element name="keyword" type="keyword_type"/>
<xs:element name="emph" type="emph_type"/>
</xs:choice>
</xs:complexType>
<xs:complexType name="keyword_type" mixed="true">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="bold" type="bold_type"/>
<xs:element name="keyword" type="keyword_type"/>
<xs:element name="emph" type="emph_type"/>
<xs:element name="plain_text" type="xs:string"/>
</xs:choice>
</xs:complexType>
<xs:complexType name="emph_type" mixed="true">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="bold" type="bold_type"/>
<xs:element name="keyword" type="keyword_type"/>
<xs:element name="emph" type="emph_type"/>
</xs:choice>
</xs:complexType>
<xs:complexType name="text_type" mixed="true">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="bold" type="bold_type"/>
<xs:element name="keyword" type="keyword_type"/>
<xs:element name="emph" type="emph_type"/>
</xs:choice>
</xs:complexType>
<xs:complexType name="parlist_type">
<xs:sequence>
<xs:element name="listitem" minOccurs="0" maxOccurs="unbounded" type="listitem_type"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="listitem_type">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="parlist" type="parlist_type"/>
<xs:element name="text" type="text_type"/>
</xs:choice>
</xs:complexType>
<xs:element name="category">
<xs:complexType>
<xs:sequence>
<xs:element name="name"/>
<xs:element name="description">
<xs:complexType>
<xs:choice>
<xs:element name="text" type="text_type"/>
<xs:element name="parlist" type="parlist_type"/>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="id"/>
</xs:complexType>
</xs:element>
</xs:schema>';
begin
dbms_xmlschema.registerSchema('/xmldb/category_auction.xsd', doc, LOCAL => FALSE,
GENTYPES => FALSE, GENBEAN => FALSE, GENTABLES => FALSE,
FORCE => FALSE,
OPTIONS => DBMS_XMLSCHEMA.REGISTER_BINARYXML,
OWNER => USER);
end;then, I created the Category table as follows:
CREATE TABLE category_a of XMLType XMLTYPE store AS BINARY XML
XMLSCHEMA "xmldb/category_auction.xsd" ELEMENT "category";Now, there still remains a problem of how to insert the "description" content which I serialized as a CLOB data into another table as XML. To this purpose, I wrote a view over the Category_a table as follows:
CREATE OR REPLACE FORCE VIEW "AUCTION_XWH"."CATEGORY_V" ("CATEGORY_ID", "CNAME", "DESCRIPTION") AS
select category_v."CATEGORY_ID",category_v."CNAME",
XMLSerialize(content ( xmlquery('$p/category/description/*' passing object_value as "p" returning content)) as clob) as "DESCRIPTION"
from auction.category_a p,
xmltable ('$a/category' passing p.Object_Value as "a"
columns category_id varchar2(15) path '@id',
cname varchar2(20) path 'name') category_v;Then, I wrote a procedure to insert data into the Category_xwh table (the source and target tables are slightly different: the common elements are just copied wereas new elements are created in the target table). The code of the procedure is the following:
create or replace PROCEDURE I_CATEGORY AS
v_cname VARCHAR2(30);
v_description clob ;
v_category_id VARCHAR2(15);
cursor mycursor is select category_id, cname, description from category_v;
BEGIN
open mycursor;
loop
/*retrieving the columns*/
fetch mycursor into v_category_id, v_cname, v_description ;
exit when mycursor%notfound;
insert into category_xwh values
(XMlElement("category",
xmlattributes(v_category_id as "category_id"),
xmlelement("Hierarchies", xmlelement("ObjHierarchy", xmlelement ("H_Cat"),
xmlelement ("Rollsup",
(xmlelement("all_categories",
xmlattributes('allcategories' as "all_category_id")))
xmlforest (
v_cname as "cat_name",
v_description as "description")
end loop;
commit;
close mycursor;
END I_CATEGORY;When I execute the procedure, I get the following error:
LSX-00201: contents of "description" should be elements onlyso, I just wonder if this is because v_description is considered as plain text and not as XML text, even if its content is XML. Do I need to use a special function to cast the CLOB as XML?
Thanks for your help.
Doulkifli -
Mapping with xml-schema XML-data to relational tables
Hello,
is it possible to map data from xml documents to relational tables with xml-schema?
I mean not in nested tables but in relational tables with primary and foreign keys!
With SQL Server 2005 it is very easy, I dont believe that Oracle couldn't do this!
I searched but i cant find anything about that!
Thx
user445232indeed, oracle does this for xml schema based xmltype data, however, these underlying tables are not accessable to the application. Maybe It should for next version, so folks who like to use relational model can use it without mapping it manually.
Actually, nested tables, are the same, their underlying tables (segments) are indeed relational tables, oracle manages them internally and not visiable to the application. You can find them in the user_segments, user_objects views though. -
Specifying nested element with two different XML Schema
Hello,
I am trying to convert one xml file to another file. I figure data services would be great for this.
My problem relates to how to have a source xml file with a certain xml schema be transformed to one of a different xml schema. I cannot build the nested elements of the target schema.
From the source xml I only need four fields. But they need to be nested three levels in the target xml.
Source
<DRUG_PRODUCT_LST xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<DRUG_ITEM>
<DRUG_PRODUCT_ID>113083</DRUG_PRODUCT_ID>
<DIN_PDIN>2317559</DIN_PDIN>
<HC_BRAND_NAME>PMS-SILDENAFIL</HC_BRAND_NAME>
<HC_ATC_CODE>G04BE03</HC_ATC_CODE>
</DRUG_ITEM>
<DRUG_PRODUCT_LST
Target
<?xml version="1.0" encoding="ISO-8859-1"?>
<CODES>
<CODE_TYPES>
<CODE_TYPE>
<COD_CODE>113083</COD_CODE>
<COD_DESCR>PMS-SILDENAFIL</COD_DESCR>
<COD_SOURCE>G04BE03</COD_SOURCE>
<COD_NPSA>2317559</COD_NPSA>
</CODE_TYPE>
</CODE_TYPES>
</CODES>
I have tried using an xml pipline to unnest the source, then use a query transform to re-nest for the target. But I do not know how to specify the input schemas.Hello,
I am trying to convert one xml file to another file. I figure data services would be great for this.
My problem relates to how to have a source xml file with a certain xml schema be transformed to one of a different xml schema. I cannot build the nested elements of the target schema.
From the source xml I only need four fields. But they need to be nested three levels in the target xml.
Source
<DRUG_PRODUCT_LST xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<DRUG_ITEM>
<DRUG_PRODUCT_ID>113083</DRUG_PRODUCT_ID>
<DIN_PDIN>2317559</DIN_PDIN>
<HC_BRAND_NAME>PMS-SILDENAFIL</HC_BRAND_NAME>
<HC_ATC_CODE>G04BE03</HC_ATC_CODE>
</DRUG_ITEM>
<DRUG_PRODUCT_LST
Target
<?xml version="1.0" encoding="ISO-8859-1"?>
<CODES>
<CODE_TYPES>
<CODE_TYPE>
<COD_CODE>113083</COD_CODE>
<COD_DESCR>PMS-SILDENAFIL</COD_DESCR>
<COD_SOURCE>G04BE03</COD_SOURCE>
<COD_NPSA>2317559</COD_NPSA>
</CODE_TYPE>
</CODE_TYPES>
</CODES>
I have tried using an xml pipline to unnest the source, then use a query transform to re-nest for the target. But I do not know how to specify the input schemas. -
Creating XML Schema from tables With Constraints
Greetings,
I'd have an interesting question. I finally am getting familiar with the various kinds of xml solutions provided by the oracle database, but hey here I have another interesting question I can't seem to get into life. I'm currently generating XML Schemas (XSD) from the tables of my database. Its nice its cool however I'd need to have the table's constraints with the xsd:elements also. And heres my problem, I can't seem to insert the table constrains. I'll show you what I mean:
<xsd:element name="MESSAGE_TABLE">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="MESSAGE_RECORD">
<xsd:complexType>
<xsd:all>
<xsd:element name="ID" type="xsd:integer" minOccurs="1" />
<xsd:element name="HEADER">
<xsd:simpleType>
<xsd:restriction base="xsd:string>
<xsd:maxLength value="255" />
</xsd:restriction>
</xsd:simpleType>
</xsd:element>
</xsd:all>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<!-- I'd need some more things here like... -->
<!-- Primary key(s) -->
<xsd:key name="PK_ID_PRIM">
<xsd:selector xpath="." />
<xsd:field xpath="ID" />
</xsd:key>
<!-- Foreign key(s) -->
<xsd:keyref name="FK_HEADER_FOREIGN" refer="PK_HEADER_ID">
<xsd:selector xpath="HEADER" />
<xsd:field xpath="ID" />
</xsd:keyref>
<!-- Unique constraint(s) -->
<xsd:unique name="UQ_..." ... />
</xsd:unique>
</xsd:element>That would fit my business needs, however I may be so blind that I can't see the forest from the tree. Currently I got so far that:
xmlElement
"xsd:schema",
xmlAttributes
'http://www.w3.org/2001/XMLSchema' as "xmlns:xsd"
xmlElement
"xsd:element",
xmlAttributes
target_table as "name"
xmlElement
"xsd:complexType",
xmlElement
"xsd:sequence",
xmlElement
"xsd:element",
xmlAttributes
target_table || '_RECORD' as "name",
'unbounded' as "maxOccurs"
xmlElement
"xsd:complexType",
xmlElement
"xsd:sequence",
xmlAgg(ELEMENT)
xmlElement
"xsd:Key",
)As you can see this won't be good since I have put a single xml element in there. I guess I'd need something more like an xmlAgg(CONSTRAINTS), however in that case I'm wondering how will the select's FROM part look like.
FROM
SELECT table_name, internal_column_id,
CASE
WHEN data_type IN ('VARCHAR2', 'CHAR')
THEN
xmlElement
"xsd:element",
xmlattributes
column_name as "name",
decode(NULLABLE, 'Y', 0, 1) as "minOccurs"
xmlElement
"xsd:simpleType",
xmlElement
"xsd:restriction",
xmlAttributes
'xsd:string' as "base"
xmlElement
"xsd:maxLength",
xmlAttributes
DATA_LENGTH as "value"
WHEN data_type = 'DATE'
THEN
xmlElement
"xsd:element",
xmlattributes
column_name as "name",
'xsd:date' as "type",
decode(NULLABLE, 'Y', 0, 1) as "minOccurs"
WHEN data_type = 'NUMBER'
THEN
xmlElement
"xsd:element",
xmlattributes
column_name as "name",
decode(DATA_SCALE, 0, 'xsd:integer', 'xsd:double') as "type",
decode(NULLABLE, 'Y', 0, 1) as "minOccurs"
ELSE
xmlElement
"xsd:element",
xmlattributes
column_name as "name",
'xsd:anySimpleType' as "type",
decode(NULLABLE, 'Y', 0, 1) as "minOccurs"
end ELEMENT
FROM user_tab_cols c
WHERE TABLE_NAME = target_table
ORDER BY internal_column_id
GROUP BY TABLE_NAME;Thank you very much for all your help!
Regards,
Joey
Edited by: Wrath#87 on 2012.09.05. 22:15Thanks for that, answer. That helped me a lot managing primary constraints. However I still have problems managing foreign keys. I come up with the following formula:
xmlElement
"xsd:schema",
xmlAttributes
'http://www.w3.org/2001/XMLSchema' as "xmlns:xsd"
xmlElement
"xsd:element",
xmlAttributes
upper(target_table) as "name"
xmlElement
"xsd:complexType",
xmlElement
"xsd:all",
xmlAgg(ELEMENT)
SELECT xmlElement
"xsd:key",
xmlattributes
uc.constraint_name as "name"
xmlElement
"xsd:selector",
xmlattributes
'.' as "xpath"
xmlAgg
xmlElement
"xsd:field",
xmlattributes
ucc.column_name as "xpath"
order by ucc.position
FROM user_constraints uc
JOIN user_cons_columns ucc
ON ucc.constraint_name = uc.constraint_name
WHERE uc.table_name = upper(target_table)
AND uc.constraint_type = 'P'
GROUP BY uc.constraint_name
SELECT xmlElement
"xsd:keyRef",
xmlattributes
a.constraint_name as "name"
xmlElement
"xsd:selector",
xmlattributes
c.table_name as "xpath"
xmlAgg
xmlElement
"xsd:field",
xmlattributes
d.column_name as "xpath"
order by c.table_name
FROM all_constraints a,
all_cons_columns b,
all_constraints c,
all_cons_columns d
WHERE a.constraint_name = b.constraint_name
AND a.constraint_name = c.r_constraint_name
AND c.constraint_name = d.constraint_name
AND a.table_name = upper(target_table)
)This gives me the following error message: 00937. 00000 - "not a single-group group function" -
Validation with jaxp 1.3 and xml-schema
I'm totally green when it comes to xml&jaxp. Using jse 1.5 (jaxp 1.3), I'm trying
to have my app parse and validate an xml doc with xml schema. I want the validation to
happen using the schema specified in the xml doc. Also, I'd prefer if my application didn't have to set
the schema to use. As far as I can make out though, it appears that I need to parse the schemaLocation when
I want to validate using xml schema. Anyone know a way to avoid that step?
If not, then any idea why I'm getting the following err?
Error...
junit.framework.AssertionFailedError: null/null:4,9: Document is invalid: no grammar found.null/null:4,9: Document root element "catalog", must match DOCTYPE root "null".
at junit.framework.Assert.fail(Assert.java:47)
at com.rwd.toolbox.junit.AbstractRwdTestCase.printAndFail(AbstractRwdTestCase.java:229)
at com.rwd.util.xml.XmlUtilsTests.testXmlValidationUsingSchemaDefinedInXmlDoc(XmlUtilsTests.java:57)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Code... obviously taken from junit test case...
DocumentBuilderFactory documentFactory = DocumentBuilderFactory.newInstance();
documentFactory.setNamespaceAware(true);
documentFactory.setValidating(true);
DocumentBuilder builder = documentFactory.newDocumentBuilder();
com.rwd.util.xml.Validator v = new com.rwd.util.xml.Validator(_validationStyle);
builder.setErrorHandler(v);
Document document = builder.parse(_document);
where com.rwd.util.xml.Validator extends DefaultHandler. Note that if I add following
code, then validation works as i expect it... but that's not really an option I care for (at least in this case).
I would anticipate being able to have the parser see the XSD reference in the XML and
apply it. Anyway, here's code to programmatically specify an XSD to use for validation....
documentFactory.setAttribute(
"http://java.sun.com/xml/jaxp/properties/schemaLanguage",
"http://www.w3.org/2001/XMLSchema");
documentFactory.setAttribute(
"http://java.sun.com/xml/jaxp/properties/schemaSource",
"file:///C:/workspace31m4/LMSTester/testData/util/xml/o.xsd");
Finally, the XML file... (example from onJava site)... Note that I've tried changing the URI to file:///c:/..., same result:
<?xml version="1.0" encoding="UTF-8"?>
<!--A OnJava Journal Catalog-->
<catalog
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="file://C:/workspace31m4/LMSTester/testData/util/xml/o.xsd"
title="OnJava.com" publisher="O'Reilly">
<journal date="April 2004">
<article>
<title>Declarative Programming in Java</title>
<author>Narayanan Jayaratchagan</author>
</article>
</journal>
<journal date="January 2004">
<article>
<title>Data Binding with XMLBeans</title>
<author>Daniel Steinberg</author>
</article>
</journal>
</catalog>
and its XSD file (also from onJava)...
<?xml version="1.0" encoding="utf-8"?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="catalog">
<xs:complexType>
<xs:sequence>
<xs:element ref="journal" minOccurs="0"
maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="title" type="xs:string"/>
<xs:attribute name="publisher" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="journal">
<xs:complexType>
<xs:sequence>
<xs:element ref="article" minOccurs="0"
maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="date" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="article">
<xs:complexType>
<xs:sequence>
<xs:element name="title" type="xs:string"/>
<xs:element ref="author" minOccurs="0"
maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="author" type="xs:string"/>
</xs:schema>
Thanks,
-PaulThere are other applications using Xerces1.0 so the requirement is that I cannot replace the Xerces jar. Any suggestions.
-
Indices and constraints on XML Tables/Columns (with Schema)
Hi,
I've read a lot of documents by know, but the more I read the more I got confused. So I hope you can help me.
Frist my Oracle Server Version: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit
I've manages to create a table with a column with the type SYS.XMLTYPE and the storage modle "Object Relational" with an XML Schema.
I can insert data and I can execute XQuery statements.
I can also create an XMLTYPE table with my Schema, althoug the tool SQL Developer keeps telling me, that the one column wich is generated within the table is of the type CLOB instead of object realtional (which is what I defined).
The query for that is:
CREATE TABLE ENTRY_XML OF XMLTYPE
XMLTYPE STORE AS OBJECT RELATIONAL
XMLSCHEMA "BBMRI_Entry.xsd" ELEMENT "Entry";
That's where I am, now my questions:
1. What's the difference? I'm aware of the obviouse difference, that with the first way I can add relational columns as well, but apart from that? If I only want to store the xml data, is the second approach always better (especially in regard to my next question)?
2. My schema contains elements with attributes (which contain IDs), which have to be unique. So I tried to add a UNIQUE constraint, but failed. I found this (http://www.oracle.com/technology/sample_code/tech/java/codesnippet/xmldb/constraints/Specify_Constraints.html), but it just doesn't work.
Query: "ALTER TABLE ENTRY_XML CONSTRAINT ENTRY_XML_SUBID_UNQIUE UNIQUE (xmldata."SubId");"
Error: "ORA-01735: invalid ALTER TABLE option"
3. I didn't try yet, but I need to specifiy foreign keys within the XML as well (which is explained in the link at question 2). I guess the solution to question 2 will make this possible as well.
4. Since I can create a UNIQUE constaint for attributes (well, I can't yet, but I hope that this will change soon) I woundered if it would be possible to realize something like auto_increment. Although I see the problem with validating the xml input if the Ids are empty. Any suggestions on that problem? Do I have to query for the highest (free) id before I can insert the new documents?
Well, that's enough for today, I hope someone can help me!
Greetings, FlorianI've read through all the literature (again) and found out, that I did most of the stuff right in the first place. I just missinterpreted the generated tables for the types and wondered why they only contained one column. Well, at least one mistery solved.
But know to make it easier just one question, which might solve all problems I have:
How can I create UNIQUE constraints and FOREIGN KEYS when I have a table or column of the type XmlType with a schema using the object relational storage method?
I found a solution http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14259/xdb05sto.htm#i1042421 (Example 5-12), but it just does not work for me.
I removed the FOREIGN KEY and tried it again and the UNIQUE Key works.
So basically the question is how to retrieve the "AId" Attribute. "XMLDATA"."AId", "XMLDATA"."Attribute"."AId" and "XMLDATA"."Subject"."Attribute"."AId" all do not work.
I've added my schema declarations at the bottom (which I've already successfully registred and used without foreign keys and constraints, so they work).
After I've registered the two schema files 3 types and 11 tables where created. One type for the attribute, one for the study type and one probably to link the attributes to the study types. The tables are one for the attribute, 4 for the content*-elements, 2 for the study type (I don't really know why two) and 4 with strange names starting with "SYS_NT" and then some random numbers and letters (looks alot like some base64 encoded string).
The Query I try to use to create the table is: (The table "Attribute" already exists and contains a field "ID", which is it's PK.)
CREATE TABLE STUDYTYPE_XML
OF XMLType (UNIQUE ("XMLDATA"."STId"),
FOREIGN KEY ("XMLDATA"."AId") REFERENCES ATTRIBUTE(ID))
XMLTYPE STORE AS OBJECT RELATIONAL
ELEMENT "StudyType.xsd#StudyType";
The error I get is:
Error starting at line 1 in command:
CREATE TABLE STUDYTYPE_XML
OF XMLType (UNIQUE ("XMLDATA"."STId"),
FOREIGN KEY ("XMLDATA"."AId") REFERENCES ATTRIBUTE(ID))
ELEMENT "StudyType.xsd#StudyType"
Error at Command Line:3 Column:37
Error report:
SQL Error: ORA-22809: nonexistent attribute
22809. 00000 - "nonexistent attribute"
Cause: An attempt was made to access a non-existent attribute of an
object type.
Action: Check the attribute reference to see if it is valid. Then retry
the operation.
Attribute-Schema (Attribute.xsd):
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:attribute name="AId">
<xs:simpleType>
<xs:restriction base="xs:integer">
<xs:minInclusive value="0" />
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="Name" type="xs:string" />
<xs:element name="ContentString" type="xs:string" />
<xs:element name="ContentInteger" type="xs:integer" />
<xs:element name="ContentDouble" type="xs:decimal" />
<xs:element name="ContentDate" type="xs:date" />
<xs:element name="Attribute">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="1">
<xs:element ref="ContentString" />
<xs:element ref="ContentInteger" />
<xs:element ref="ContentDouble" />
<xs:element ref="ContentDate" />
</xs:choice>
<xs:attribute ref="AId" use="required" />
<xs:attribute ref="Name" use="optional" />
</xs:complexType>
</xs:element>
</xs:schema>
Study Type Schema (StudyType.xsd):
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:include schemaLocation="Attribute.xsd" />
<xs:attribute name="STId">
<xs:simpleType>
<xs:restriction base="xs:integer">
<xs:minInclusive value="0" />
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:element name="StudyType">
<xs:complexType>
<xs:sequence>
<xs:element ref="Attribute" minOccurs="1" maxOccurs="unbounded" />
<xs:element ref="StudyType" minOccurs="0" maxOccurs="unbounded" />
</xs:sequence>
<xs:attribute ref="STId" use="required"/>
</xs:complexType>
</xs:element>
</xs:schema>
Edited by: alwaysspam on Sep 8, 2010 5:35 PM
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