Re: [rules-users] Inserting Facts from Json Format
1) Expose global object to drools with methods that can serialize and
deserialize JSON. Maybe you could use http://jackson.codehaus.org/.
2) Insert a "wrapper object" into knowledge space that contains a
reference to JSON object as text, stream or whatever.
3) Use (1) to deserialize the JSON data in contained in (2).
4) retract (2)
5) insert (3)
Obviously the declared object and the JSON object needs to have the same
structure.
Good luck! // Olle
On 12/8/11 6:07 PM, "ihabo01" <ihabo01(a)gmail.com> wrote:
Hello to all,
I have the following simple rule:
declare FlatData
param1 : String
param2 : String
end
rule "Test"
when
a:FlatData(param1=="something")
then
a.setParam2("hi");
end
And I have the following code to load the rule:
KnowledgeBuilder kBuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kBuilder.add(ResourceFactory.newFileResource("myRule.drl"),ResourceType.DR
L);
KnowledgeBaseConfiguration kBaseConfig = KnowledgeBaseFactory
.newKnowledgeBaseConfiguration();
KnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase(kBaseConfig);
kBase.addKnowledgePackages(kBuilder.getKnowledgePackages());
StatefulKnowledgeSession session = kBase.newStatefulKnowledgeSession();
session.fireAllRules();
And I have also the following object (in Json) that I would like to insert
as a fact just before firing the rules:
{"object":{" FlatData
":{"param1":"value1","param2":²value2²}}}}
How can I achieve that?
Many thanks in advance for your help
Ihab
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