// Program for XMl to Flat file
/*
--------------- Referance for variables --------------
1. slurper = slurper is an object of XmlSlurper class which parse xml string
2. root,sub_child,sub_sub_child are the loop variables which help to iterate among objects
3. date,date_str,date_list,date_index = These variables are used for date conversion
*/
// xml file in a string variable str
def str = '''
<Purchases>
<Purchase>
<Process1>
<ID typeCode ="Customer_ABC">1</ID>
<DocumentDateTime>2020-04-15T00:00:00+0000</DocumentDateTime>
<Note>CUSTOMER_NOTES1</Note>
<CustomerParty>
<ID>123</ID>
<Name>ABC</Name>
</CustomerParty>
</Process1>
<Process2>
<ID typeCode ="Customer_XYZ">2</ID>
<DocumentDateTime>2020-04-15T00:00:</DocumentDateTime>
<Note>CUSTOMER_NOTES2</Note>
<CustomerParty>
<ID>124</ID>
<Name>XYZ</Name>
</CustomerParty>
</Process2>
</Purchase>
</Purchases>
'''
// sluper is an Object of XmlSlurper class which parse the str variable into an object
def slurper = new XmlSlurper().parseText(str)
// slurper object iterating data with childNodes in .each loop
slurper.Purchase.childNodes().each{
root-> // root variable contains the childnodes of Purchase
root.childNodes().each{
sub_child-> // sub_child variable contains the childnodes of root variable
if(sub_child.childNodes().size()==0){ // if a node have only one child no subchilds
if(sub_child.name=="DocumentDateTime"){ // if node name DocumentDateTime to convert date
def date_str = sub_child.text()
def date_list = date_str.split('T') //--------------------------
def date_index = date_list.getAt(0)
def actual_date = date_index.split("-") // aranging the date in desired output
def required_date = actual_date.getAt(2)
def required_month = actual_date.getAt(1)
def required_year = actual_date.getAt(0) //------------------------------
println "${sub_child.name} : ${required_date}/${required_month}/${required_year} T ${date_list.getAt(1)}" // date printing with time
}
else{ // childnodes which are not equal to DocumentDateTime will print from here
println "${sub_child.name()} : ${sub_child.text()}"
}
}
else{ // if any child have multiple childnodes
println "${sub_child.name()}"
sub_child.childNodes().each{
sub_sub_child-> println "${sub_sub_child.name()} : ${sub_sub_child.text()}" // sub_sub_child variable contains childnodes of sub_child
}
}
}
}
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println "Hello " + name
Groovy is an object-oriented programming language based on java. Apache Groovy is a dynamic and agile language which is similar to Python, Ruby, Smalltalk etc.
| Data type | Description | Range |
|---|---|---|
| String | To represent text literals | NA |
| char | To represent single character literal | NA |
| int | To represent whole numbers | -2,147,483,648 to 2,147,483,647 |
| short | To represent short numbers | -32,768 to 32,767 |
| long | To represent long numbers | -9,223,372,036,854,775,808 to +9,223,372,036,854,775,807 |
| double | To represent 64 bit floating point numbers | 4.94065645841246544e-324d to 1.79769313486231570e+308d |
| float | To represent 32 bit floating point numbers | 1.40129846432481707e-45 to 3.40282346638528860e+38 |
| byte | To represent byte value | -128 to 127 |
| boolean | To represent boolean values either true or false | True or False |
You can define variables in two ways
data-type variable-name;
[or]
def variable-name;
0.upto(n) {println "$it"}
or
n.times{println "$it"}
where n is the number of loops and 0 specifies the starting index
When ever you want to perform a set of operations based on a condition or set of conditions, then If / Nested-If / If-Else is used.
if(conditional-expression) {
// code
} else {
// code
}
Switch is an alternative to If-Else-If ladder and to select one among many blocks of code.
switch(conditional-expression) {
case value1:
// code
break; // optional
case value2:
// code
break; // optional
...
default:
//code to be executed when all the above cases are not matched;
}
List allows you to store ordered collection of data values.
def mylist = [1,2,3,4,5];
| List Methods | Description |
|---|---|
| size() | To find size of elements |
| sort() | To sort the elements |
| add() | To append new value at the end |
| contains() | Returns true if this List contains requested value. |
| get() | Returns the element of the list at the definite position |
| pop() | To remove the last item from the List |
| isEmpty() | Returns true if List contains no elements |
| minus() | This allows you to exclude few specified elements from the elements of the original |
| plus() | This allows you to add few specified elements to the elements of the original |
| remove() | To remove the element present at the specific position |
| reverse() | To reverse the elements of the original List and creates new list |