How to read column value using grails excel import plugin? - grails

Question

I am using Grails excel import plugin to import an excel file.
static Map propertyConfigurationMap = [
name:([expectedType: ExcelImportService.PROPERTY_TYPE_STRING, defaultValue:null]),
age:([expectedType: ExcelImportService.PROPERTY_TYPE_INT, defaultValue:0])]
static Map CONFIG_BOOK_COLUMN_MAP = [
sheet:'Sheet1',
startRow: 1,
columnMap: [
//Col, Map-Key
'A':'name',
'B':'age',
]
]
I am able to retrieve the array list by using the code snippet:
def usersList = excelImportService.columns(workbook, CONFIG_USER_COLUMN_MAP)
which results in
[[name: Mark, age: 25], [name: Jhon, age: 46], [name: Anil, age: 62], [name: Steve, age: 32]]
And also I'm able to read each record say [name: Mark, age: 25] by using usersList.get(0)
How do I read the each column value?
I know I can read something like this
String[] row = usersList.get(0)
for (String s : row)
println s
I wonder is there any thing that plugin supports so that I can read column value directly rather manipulating it to get the desired result.

Answer 1

Your usersList is basically a List<Map<String, Object>> (list of maps). You can read a column using the name you gave it in the config. In your example, you named column A name and column B age. So using your iteration example as a basis, you can read each column like this:
Map row = usersList.get(0)
for(Map.Entry entry : row) {
println entry.value
}
Groovy makes this easier to do with Object.each(Closure):
row.each { key, value ->
println value
}
If you want to read a specific column value, here are a few ways to do it:
println row.name // One
println row['name'] // Two
println row.getAt('name') // Three
Hint: These all end up calling row.getAt('name')