Hi,You are referencing the "legacy" intent and it should be defined in the definitions.xml.
For example,<definitions xmlns="http://www.osoa.org/xmlns/sca/1.0"; xmlns:sca="http://www.osoa.org/xmlns/sca/1.0"; targetNamespace="http://legacy/";>
<intent name="legacy" constrains="sca:binding"> <description> </description> </intent> </definitions>This defines the {http://legacy/}legacy intent and it can be used to constrain all SCA bindings.
Then you need to implement a SCADefinitionsProvider and register it with META-INF/services/org.apache.tuscany.sca.provider.SCADefinitionsProvider.
Please look at the following code as an example:[1] https://svn.apache.org/repos/asf/tuscany/java/sca/modules/policy-security/src/main/java/org/apache/tuscany/sca/policy/security/SecurityPolicyDefinitionsProvider.java [2] https://svn.apache.org/repos/asf/tuscany/java/sca/modules/policy-security/src/main/resources/META-INF/services/org.apache.tuscany.sca.provider.SCADefinitionsProvider
It's a bit complicated at this moment and we need to have a better story in future releases.
Thanks, Raymond -------------------------------------------------- From: "Honghsi Lo" <[EMAIL PROTECTED]> Sent: Tuesday, July 01, 2008 8:57 AM To: <[email protected]> Subject: How the Intent work
Hi,I am working on a networking base java binding for Tuscany. When I specified 'requires="legacy"' in the reference of composite, I got PolicyValidationException generated by PolicyValidationUtils.java because the returned constrained is null. I checked IntentImpl.java, it hasprivate List<QName> constrains = new ArrayList<Qname>(); ... public List<QName> getConstrains() { return constrains; } ....But there is no way to add anything to the constrains list. What should I do in my binding to avoid this exception and my binding's invoke method can check this legacy intent? BTW, I am using version 1.2 binaries.Regards, honghsi
org.apache.tuscany.sca.provider.SCADefinitionsProvider
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