Saturday, September 27, 2014

Analysis and Comparison sample


public class ObjectSpecificCondition {
    private Class classType;

    public boolean check(Object obj) {
        boolean check = ((DateObject) obj).getLocalizationdate();
    }

    public ObjectSpecificCondition(Class classType) {
        this.classType = classType;
    }

    boolean checkTypeSpecific(Object busineesObject) {
        if (classType.isAssignableFrom(busineesObject.getClass())) {
            return true;
        }
        else{
            throw new Exception();
        }

    }

    public static void main(String[] args) throws Exception {
        DateObject mockdateObject = new DateObject();
        // caseI: No generics used caseI works fine no exception is generated but more lines of code to write
        ObjectSpecificCondition mockanalysis = new ObjectSpecificCondition(DateObject.class);
     
        if (mockanalysis.checkTypeSpecific(mockdateObject)) {
            mockanalysis.check(mockdateObject);

        }
     // caseII:No generics used caseII throws exception in run time .More lines of code to write.It can not capture incompatible type at compile time
        ObjectSpecificCondition mockanalysis1 = new ObjectSpecificCondition(String .class);
        DateObject mockdateObject1 = new DateObject();
        if (mockanalysis.checkTypeSpecific(mockdateObject1)) {
            mockanalysis.check(mockdateObject1);

        }
       // caseIII;Generics used and line of code is reduced to less
        ObjectSpecificConditionGenerics mockgenerics=new ObjectSpecificConditionGenerics() ;
        mockgenerics.check(mockdateObject);
     
        // caseIV;Generics used and line of code is reduced to less and error for compataible object is generated at compile time
        ObjectSpecificConditionGenerics mockgenerics1=new ObjectSpecificConditionGenerics() ;
        String mockstring=new String();
        mockgenerics.check(mockstring); // it is captured at compile time ,i think its good to catch at compile time then to pass it at run time
       
    }
}

class DateObject {
    boolean getLocalizationdate() {
        // return true Or False according to business logic
    }
}

class ObjectSpecificConditionGenerics<T extends DateObject> {
    private T classTypeGenerics;

    public boolean check(T genericsobj) {
        genericsobj.getLocalizationdate();

    }

}

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