Trying to invoke an expression rule with input parameter from my java plugin.

girikumard over 10 years ago

Trying to invoke an expression rule with input parameter from my java plugin.

Tried using evaluateExpression(java.lang.String expression, NamedTypedValue[] variableValues) method in ProcessDesignService Interface.But not able to construct variableValues of type NamedTypedValue[].

Do we have any sample code to pass a parameter to an expression rule from java ?

Thanks in Advance.

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0 girikumard over 10 years ago

@Abhi,
Above code is not working for me.
my expression rule "executeRule()" has one parameter of type integer. Tried the below piece of code but input is not getting passed.

LOG: Rule 'executerule' has 1 parameters, but instead passed 0 parameters.

Code:

NamedTypedValue var = new NamedTypedValue();
var.setName("pid");
var.setInstanceType(AppianTypeLong.INTEGER);
var.setValue(686);

List list = new ArrayList();
list.add(var);

NamedTypedValue[] inputs = new NamedTypedValue[list.size()];
list.toArray(inputs);

TypedValue result = new TypedValue();
try {
\tresult = pds.evaluateExpression("=executeRule()",inputs);
\t
} catch (Exception e) {
e.printStackTrace();
}
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0 girikumard over 10 years ago

@Abhi,
Above code is not working for me.
my expression rule "executeRule()" has one parameter of type integer. Tried the below piece of code but input is not getting passed.

LOG: Rule 'executerule' has 1 parameters, but instead passed 0 parameters.

Code:

NamedTypedValue var = new NamedTypedValue();
var.setName("pid");
var.setInstanceType(AppianTypeLong.INTEGER);
var.setValue(686);

List list = new ArrayList();
list.add(var);

NamedTypedValue[] inputs = new NamedTypedValue[list.size()];
list.toArray(inputs);

TypedValue result = new TypedValue();
try {
\tresult = pds.evaluateExpression("=executeRule()",inputs);
\t
} catch (Exception e) {
e.printStackTrace();
}
Cancel
Vote Up 0 Vote Down

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