Expressions

 

 

An expression is a combination of variables, constants and operators that on evaluation yields a single value.

 

Expression types

 

Expression in deluge are classified as follows:

 

String Expression

 

A string expression evaluates to a sequence of characters or text. For example:
"abcd" , "zoho " + "creator " + " - online"

 

sendmail
[
    To       : this.name+"@adventnet.com"
    Subject  : "The feedback you had sent has been incorporated in zohocreator"
    Message  : "Comments" + this.comments
]

 

In the above sample,

 

- comments and name are the fields of the form.

- name+"@adventnet.com" is a string expression.
- "Comments " + this.comments is also a string expression.

 

Numeric Expression


A numeric expression evaluates to number, either floating point (e.g. 4.556 or -5.311) or integer numbers (e.g. -41 , 6243).

 

English
(
    type =  number
    decimalplace =  2
)
Arts
(
    type = number
    decimalplace =  2
)
AverageMarks
(
    type = formula
    value = (English + Arts) / 2
)

 

In the above sample, (English + Arts) / 2 is a numeric expression


DateTime Expression


A datetime expression involves operations with date, time, day, week and such calenderial terms. A fixed number of days, week or time can be added or subtracted from date. The final value of such expression should be a valid date with time information.

 

filters
(
    "joined on 4th july"  :  (Date_Of_Joining == '04-Jul-2006')
)

 

In the above sample, Date_Of_Joining is a date type field


Boolean Expression


The result of a boolean expression has only two states, true or false. The boolean expressions are nothing but conditional expressions used to evaluate or analyze certain condition and return true or false depending on whether the condition checked succeeded or failed.
e.g. 2 > 4, 4< 6 && (5%6) > 3. Also any value that is not nil or the constant false is true.

 

filters
(
   priority
   status
   "High Priority" :  ((priority == "V.High" ||  priority == "High") && (status == "Open"))
)

 

Variables

 

Refer the topic, Set Variable for more information.

 

Literals or Constants

 

Literals indicate values written directly like "Hello world", 4. e.g "Hello world" is a string literal and 4 is a numeric literal.

 

sendmail
[
    To       :  this.name+"@adventnet.com"
    Subject  :  "The feedback you had sent has been incorporated in zohocreator"
    Message  :  "Comments" + this.comments
]

 

In the above sample, "support@zohocreator.com" is a string constant.