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  1. Drools
  2. DROOLS-4624

Accumulate doesn't get modified and parsed to double String correctly

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    • Bug
    • Resolution: Not a Bug
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      Bar.java
      rule "Inserting rule"
salience 10
when
then
    Resource resource1 = new Resource();
    resource1.setName("Resource 1");
    resource1.setAmount("5");
    insert(resource1);
    System.out.println("Resource is set");
end

rule "Modifying rule"
salience 20
when
    $resource1: Resource(name == "Resource 1")
then
    modify($resource1) {setAmount("20")};
    System.out.println("Resource is modified to 20");
end

rule "Accumulating rule"
salience 30
when
    Resource(amount != "")
    $total: Number() from accumulate(
        Resource($amount: Double.parseDouble(amount)),
        sum($amount))
then
    System.out.println("Accumulated: " + $total);
end

      So the output is

      Resource is set
      Accumulated: 5.0
      Resource is modified to 20
      Accumulated: 5.0

      The last line expected as "Accumulate: 20.0"

      Show
      Bar.java rule "Inserting rule" salience 10 when then Resource resource1 = new Resource(); resource1.setName( "Resource 1" ); resource1.setAmount( "5" ); insert(resource1); System .out.println( "Resource is set" ); end rule "Modifying rule" salience 20 when $resource1: Resource(name == "Resource 1" ) then modify($resource1) {setAmount( "20" )}; System .out.println( "Resource is modified to 20" ); end rule "Accumulating rule" salience 30 when Resource(amount != "") $total: Number () from accumulate( Resource($amount: Double .parseDouble(amount)), sum($amount)) then System .out.println( "Accumulated: " + $total); end So the output is Resource is set Accumulated: 5.0 Resource is modified to 20 Accumulated: 5.0 The last line expected as "Accumulate: 20.0"
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    • NEW

    Description

      I have to sum one field on all objects of "Resource" class. And I found out that accumulate's behavior is odd when before accumulating I am modifying that field.

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            mfusco@redhat.com Mario Fusco
            almastoimbekov Almas Toimbekov (Inactive)
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              Created:
              Updated:
              Resolved: