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

girikumard over 8 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 8 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 8 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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