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Posted to java-user@axis.apache.org by Dennis Sosnoski <dm...@sosnoski.com> on 2005/03/02 20:18:37 UTC
Re: Amazon and Axis
Came across this thread when sorting through my backlog. Just for the
sake of anyone trying this, Axis is unable to work with the Amazon web
service interface. The problem is that Axis always sends elements with
xsi:nil="true" for values you set to null, even when the schema does not
mark those elements as nillable. This causes problems with Amazon, where
one element in particular is only supposed to have a particular value if
present (though that information is not included in the schema). Here's
an example schema fragment from the WSDL:
<xs:element name="ItemSearch">
<xs:complexType>
<xs:sequence>
<xs:element name="SubscriptionId" type="xs:string"
minOccurs="0"/>
<xs:element name="AssociateTag" type="xs:string"
minOccurs="0"/>
<xs:element name="XMLEscaping" type="xs:string"
minOccurs="0"/>
<xs:element name="Validate" type="xs:string"
minOccurs="0"/>
<xs:element name="Shared"
type="tns:ItemSearchRequest" minOccurs="0"/>
<xs:element name="Request"
type="tns:ItemSearchRequest" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
Here's what Axis generates:
POST /onca/soap?Service=AWSECommerceService HTTP/1.0
Content-Type: text/xml; charset=utf-8
Accept: application/soap+xml, application/dime, multipart/related, text/*
User-Agent: Axis/1.2RC3
...
<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<ItemSearch
xmlns="http://webservices.amazon.com/AWSECommerceService/2005-01-19">
<SubscriptionId>XXXXXXXXXXXXXXXX</SubscriptionId>
<AssociateTag xsi:nil="true"/>
<XMLEscaping xsi:nil="true"/>
<Validate xsi:nil="true"/>
<Shared>
<Count lowestSetBit="2">12</Count>
<ResponseGroup>Medium</ResponseGroup>
<SearchIndex>Books</SearchIndex>
<Title>Java XML</Title>
</Shared>
<Request xsi:nil="true"/>
</ItemSearch>
</soapenv:Body>
</soapenv:Envelope>
Note the AssociateTag, XMLEscaping, and Validate elements in this request.
The problem was supposed to have been fixed some time ago:
http://issues.apache.org/jira/browse/AXIS-530 :-) Unfortunately the fix
doesn't work, as can be seen by the above results from RC3. :-( From
this and other experiences with Axis releases (including the >1 year
cycle for a point release) I'm starting to wonder if Axis has just
gotten to be such a mess of spaghetti code that it's no longer usable in
production. I've been training developers on Axis for some time. It's
embarrassing to have to spend much of the training time discussing known
issues and ways to work around them, but there doesn't appear to be any
alternative at present.
- Dennis
Dennis M. Sosnoski
Enterprise Java, XML, and Web Services
Training and Consulting
http://www.sosnoski.com
Redmond, WA 425.885.7197
BTW, the work-around for this case is to edit the Amazon WSDL and strip
out the optional elements you're not going to be using from the request
schema definitions.
s1190202@mail.inf.tu-dresden.de wrote:
>>-----Original Message-----
>>From: Johan Meyer [mailto:johanm@saicom.co.za]
>>
>>
>Sorry Johan,
>
>I can not give you an url where you will find a finished service but I can
>tell you some information you would need.
>
>First of all you must register by amazon, so you will get an subscription
>Id which you need.
>Then you need for each request you send some filled standard informations.
>Therefore I can send you this link
>http://www.amazon.com/gp/aws/landing.html/ref=gw1_mm_4/104-3068958-8487102
>or look under the amaozon website>male money>web service
>
>On this pages you will find some api's how to use the amazon wsdl.
>
>Hope this might help you a bit.
>
>Greetings Olaf
>
>
>
>>Sent: Thursday, January 27, 2005 11:25 AM
>>To: axis-user@ws.apache.org
>>Subject: Amazon and Axis
>>Importance: High
>>
>>Hello
>>I am a new Java Axis user and would like to know if anybody
>>knows where I can find a demo on how to use Amazon's web
>>services with Axis.
>>
>>Any help will be appreciated.
>>
>>Johan
>>
>>--
>>No virus found in this outgoing message.
>>Checked by AVG Anti-Virus.
>>Version: 7.0.300 / Virus Database: 265.7.4 - Release Date: 1/25/2005
>>
>>
>>
>>
>>
>>
>
>
>
Known Problems [Re: Amazon and Axis]
Posted by Davanum Srinivas <da...@gmail.com>.
Dennis, Everyone,
- IF you *KNOW* a problem make sure there is a JIRA bug.
- IF the JIRA bug is CLOSED. Make a comment in the bug report and i
will re-open it.
- IF the JIRA bug DOES NOT have a simple test case to recreate the
bug, please add one.
IF we don't know a bug is there, we cannot fix it.
Thanks,
dims
On Wed, 02 Mar 2005 11:18:37 -0800, Dennis Sosnoski <dm...@sosnoski.com> wrote:
> Came across this thread when sorting through my backlog. Just for the
> sake of anyone trying this, Axis is unable to work with the Amazon web
> service interface. The problem is that Axis always sends elements with
> xsi:nil="true" for values you set to null, even when the schema does not
> mark those elements as nillable. This causes problems with Amazon, where
> one element in particular is only supposed to have a particular value if
> present (though that information is not included in the schema). Here's
> an example schema fragment from the WSDL:
>
> <xs:element name="ItemSearch">
> <xs:complexType>
> <xs:sequence>
> <xs:element name="SubscriptionId" type="xs:string"
> minOccurs="0"/>
> <xs:element name="AssociateTag" type="xs:string"
> minOccurs="0"/>
> <xs:element name="XMLEscaping" type="xs:string"
> minOccurs="0"/>
> <xs:element name="Validate" type="xs:string"
> minOccurs="0"/>
> <xs:element name="Shared"
> type="tns:ItemSearchRequest" minOccurs="0"/>
> <xs:element name="Request"
> type="tns:ItemSearchRequest" minOccurs="0" maxOccurs="unbounded"/>
> </xs:sequence>
> </xs:complexType>
> </xs:element>
>
> Here's what Axis generates:
>
> POST /onca/soap?Service=AWSECommerceService HTTP/1.0
> Content-Type: text/xml; charset=utf-8
> Accept: application/soap+xml, application/dime, multipart/related, text/*
> User-Agent: Axis/1.2RC3
> ...
>
> <?xml version="1.0" encoding="UTF-8"?>
> <soapenv:Envelope
> xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
> xmlns:xsd="http://www.w3.org/2001/XMLSchema"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
> <soapenv:Body>
> <ItemSearch
> xmlns="http://webservices.amazon.com/AWSECommerceService/2005-01-19">
> <SubscriptionId>XXXXXXXXXXXXXXXX</SubscriptionId>
> <AssociateTag xsi:nil="true"/>
> <XMLEscaping xsi:nil="true"/>
> <Validate xsi:nil="true"/>
> <Shared>
> <Count lowestSetBit="2">12</Count>
> <ResponseGroup>Medium</ResponseGroup>
> <SearchIndex>Books</SearchIndex>
> <Title>Java XML</Title>
> </Shared>
> <Request xsi:nil="true"/>
> </ItemSearch>
> </soapenv:Body>
> </soapenv:Envelope>
>
> Note the AssociateTag, XMLEscaping, and Validate elements in this request.
>
> The problem was supposed to have been fixed some time ago:
> http://issues.apache.org/jira/browse/AXIS-530 :-) Unfortunately the fix
> doesn't work, as can be seen by the above results from RC3. :-( From
> this and other experiences with Axis releases (including the >1 year
> cycle for a point release) I'm starting to wonder if Axis has just
> gotten to be such a mess of spaghetti code that it's no longer usable in
> production. I've been training developers on Axis for some time. It's
> embarrassing to have to spend much of the training time discussing known
> issues and ways to work around them, but there doesn't appear to be any
> alternative at present.
>
> - Dennis
>
> Dennis M. Sosnoski
> Enterprise Java, XML, and Web Services
> Training and Consulting
> http://www.sosnoski.com
> Redmond, WA 425.885.7197
>
> BTW, the work-around for this case is to edit the Amazon WSDL and strip
> out the optional elements you're not going to be using from the request
> schema definitions.
>
> s1190202@mail.inf.tu-dresden.de wrote:
>
> >>-----Original Message-----
> >>From: Johan Meyer [mailto:johanm@saicom.co.za]
> >>
> >>
> >Sorry Johan,
> >
> >I can not give you an url where you will find a finished service but I can
> >tell you some information you would need.
> >
> >First of all you must register by amazon, so you will get an subscription
> >Id which you need.
> >Then you need for each request you send some filled standard informations.
> >Therefore I can send you this link
> >http://www.amazon.com/gp/aws/landing.html/ref=gw1_mm_4/104-3068958-8487102
> >or look under the amaozon website>male money>web service
> >
> >On this pages you will find some api's how to use the amazon wsdl.
> >
> >Hope this might help you a bit.
> >
> >Greetings Olaf
> >
> >
> >
> >>Sent: Thursday, January 27, 2005 11:25 AM
> >>To: axis-user@ws.apache.org
> >>Subject: Amazon and Axis
> >>Importance: High
> >>
> >>Hello
> >>I am a new Java Axis user and would like to know if anybody
> >>knows where I can find a demo on how to use Amazon's web
> >>services with Axis.
> >>
> >>Any help will be appreciated.
> >>
> >>Johan
> >>
> >>--
> >>No virus found in this outgoing message.
> >>Checked by AVG Anti-Virus.
> >>Version: 7.0.300 / Virus Database: 265.7.4 - Release Date: 1/25/2005
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
>
--
Davanum Srinivas - http://webservices.apache.org/~dims/
Re: Amazon and Axis
Posted by Davanum Srinivas <da...@gmail.com>.
Tiny 2 line fix has been applied to latest CVS;
http://marc.theaimsgroup.com/?l=axis-dev&m=110987452221625&w=2
-- dims
On Wed, 2 Mar 2005 17:49:20 -0500, Mark Hansen <ma...@gmail.com> wrote:
> With respect to this issue:
>
> > The problem was supposed to have been fixed some time ago:
> > http://issues.apache.org/jira/browse/AXIS-530 :-) Unfortunately the fix
> > doesn't work, as can be seen by the above results from RC3. :-( From
> > this and other experiences with Axis releases (including the >1 year
> > cycle for a point release) I'm starting to wonder if Axis has just
> > gotten to be such a mess of spaghetti code that it's no longer usable in
> > production. I've been training developers on Axis for some time. It's
> > embarrassing to have to spend much of the training time discussing known
> > issues and ways to work around them, but there doesn't appear to be any
> > alternative at present.
>
> Why don't you submit a patch? There are more committers working on
> Axis than there seem to have been in a while. Like you, I've been
> frustrated in the past, but things seem to be improving a bit. Its
> only going to get better if people like yourself, who understand the
> inner workings of Axis, continue to submit patches.
>
> -- Mark
>
--
Davanum Srinivas - http://webservices.apache.org/~dims/
Re: Amazon and Axis
Posted by Mark Hansen <ma...@gmail.com>.
With respect to this issue:
> The problem was supposed to have been fixed some time ago:
> http://issues.apache.org/jira/browse/AXIS-530 :-) Unfortunately the fix
> doesn't work, as can be seen by the above results from RC3. :-( From
> this and other experiences with Axis releases (including the >1 year
> cycle for a point release) I'm starting to wonder if Axis has just
> gotten to be such a mess of spaghetti code that it's no longer usable in
> production. I've been training developers on Axis for some time. It's
> embarrassing to have to spend much of the training time discussing known
> issues and ways to work around them, but there doesn't appear to be any
> alternative at present.
Why don't you submit a patch? There are more committers working on
Axis than there seem to have been in a while. Like you, I've been
frustrated in the past, but things seem to be improving a bit. Its
only going to get better if people like yourself, who understand the
inner workings of Axis, continue to submit patches.
-- Mark
Known Problems [Re: Amazon and Axis]
Posted by Davanum Srinivas <da...@gmail.com>.
Dennis, Everyone,
- IF you *KNOW* a problem make sure there is a JIRA bug.
- IF the JIRA bug is CLOSED. Make a comment in the bug report and i
will re-open it.
- IF the JIRA bug DOES NOT have a simple test case to recreate the
bug, please add one.
IF we don't know a bug is there, we cannot fix it.
Thanks,
dims
On Wed, 02 Mar 2005 11:18:37 -0800, Dennis Sosnoski <dm...@sosnoski.com> wrote:
> Came across this thread when sorting through my backlog. Just for the
> sake of anyone trying this, Axis is unable to work with the Amazon web
> service interface. The problem is that Axis always sends elements with
> xsi:nil="true" for values you set to null, even when the schema does not
> mark those elements as nillable. This causes problems with Amazon, where
> one element in particular is only supposed to have a particular value if
> present (though that information is not included in the schema). Here's
> an example schema fragment from the WSDL:
>
> <xs:element name="ItemSearch">
> <xs:complexType>
> <xs:sequence>
> <xs:element name="SubscriptionId" type="xs:string"
> minOccurs="0"/>
> <xs:element name="AssociateTag" type="xs:string"
> minOccurs="0"/>
> <xs:element name="XMLEscaping" type="xs:string"
> minOccurs="0"/>
> <xs:element name="Validate" type="xs:string"
> minOccurs="0"/>
> <xs:element name="Shared"
> type="tns:ItemSearchRequest" minOccurs="0"/>
> <xs:element name="Request"
> type="tns:ItemSearchRequest" minOccurs="0" maxOccurs="unbounded"/>
> </xs:sequence>
> </xs:complexType>
> </xs:element>
>
> Here's what Axis generates:
>
> POST /onca/soap?Service=AWSECommerceService HTTP/1.0
> Content-Type: text/xml; charset=utf-8
> Accept: application/soap+xml, application/dime, multipart/related, text/*
> User-Agent: Axis/1.2RC3
> ...
>
> <?xml version="1.0" encoding="UTF-8"?>
> <soapenv:Envelope
> xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
> xmlns:xsd="http://www.w3.org/2001/XMLSchema"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
> <soapenv:Body>
> <ItemSearch
> xmlns="http://webservices.amazon.com/AWSECommerceService/2005-01-19">
> <SubscriptionId>XXXXXXXXXXXXXXXX</SubscriptionId>
> <AssociateTag xsi:nil="true"/>
> <XMLEscaping xsi:nil="true"/>
> <Validate xsi:nil="true"/>
> <Shared>
> <Count lowestSetBit="2">12</Count>
> <ResponseGroup>Medium</ResponseGroup>
> <SearchIndex>Books</SearchIndex>
> <Title>Java XML</Title>
> </Shared>
> <Request xsi:nil="true"/>
> </ItemSearch>
> </soapenv:Body>
> </soapenv:Envelope>
>
> Note the AssociateTag, XMLEscaping, and Validate elements in this request.
>
> The problem was supposed to have been fixed some time ago:
> http://issues.apache.org/jira/browse/AXIS-530 :-) Unfortunately the fix
> doesn't work, as can be seen by the above results from RC3. :-( From
> this and other experiences with Axis releases (including the >1 year
> cycle for a point release) I'm starting to wonder if Axis has just
> gotten to be such a mess of spaghetti code that it's no longer usable in
> production. I've been training developers on Axis for some time. It's
> embarrassing to have to spend much of the training time discussing known
> issues and ways to work around them, but there doesn't appear to be any
> alternative at present.
>
> - Dennis
>
> Dennis M. Sosnoski
> Enterprise Java, XML, and Web Services
> Training and Consulting
> http://www.sosnoski.com
> Redmond, WA 425.885.7197
>
> BTW, the work-around for this case is to edit the Amazon WSDL and strip
> out the optional elements you're not going to be using from the request
> schema definitions.
>
> s1190202@mail.inf.tu-dresden.de wrote:
>
> >>-----Original Message-----
> >>From: Johan Meyer [mailto:johanm@saicom.co.za]
> >>
> >>
> >Sorry Johan,
> >
> >I can not give you an url where you will find a finished service but I can
> >tell you some information you would need.
> >
> >First of all you must register by amazon, so you will get an subscription
> >Id which you need.
> >Then you need for each request you send some filled standard informations.
> >Therefore I can send you this link
> >http://www.amazon.com/gp/aws/landing.html/ref=gw1_mm_4/104-3068958-8487102
> >or look under the amaozon website>male money>web service
> >
> >On this pages you will find some api's how to use the amazon wsdl.
> >
> >Hope this might help you a bit.
> >
> >Greetings Olaf
> >
> >
> >
> >>Sent: Thursday, January 27, 2005 11:25 AM
> >>To: axis-user@ws.apache.org
> >>Subject: Amazon and Axis
> >>Importance: High
> >>
> >>Hello
> >>I am a new Java Axis user and would like to know if anybody
> >>knows where I can find a demo on how to use Amazon's web
> >>services with Axis.
> >>
> >>Any help will be appreciated.
> >>
> >>Johan
> >>
> >>--
> >>No virus found in this outgoing message.
> >>Checked by AVG Anti-Virus.
> >>Version: 7.0.300 / Virus Database: 265.7.4 - Release Date: 1/25/2005
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
>
--
Davanum Srinivas - http://webservices.apache.org/~dims/