'File Content Conversion' OR 'MessageTransformBean' in sender channel can produce a 4 level deep XML, maximum.
If expected XML is more than 4 level deep.
Solution: - Develop FCC or MTB to read each line of input.
Map using an UDF, to split each line to corresponding field.
UDF code: - ‘Execution Type’ : ‘All Values of a Context’.
public void udf_Shopping(String[] eachLine, ResultList Customer, ResultList Name, ResultList ID, ResultList Order, ResultList OrderNumber, ResultList OrderNote, ResultList LineItem, ResultList LineNumber, ResultList Material, ResultList TaxLine, ResultList Type, ResultList Amount, Container container) throws StreamTransformationException{
int countCust = 0, countOrdr = 0, countLine = 0;
String values[];
for (String line : eachLine) { values = line.split(","); if (line.startsWith("Cust")) { Customer.addValue(""); Name.addValue(values[1]); Name.addContextChange(); ID.addValue(values[2]); ID.addContextChange(); //Add context change form second Customer. if (countCust > 0) { Order.addContextChange(); } countCust++; } else if (line.startsWith("Ordr")) { Order.addValue(""); OrderNumber.addValue(values[1]); OrderNumber.addContextChange(); OrderNote.addValue(values[2]); OrderNote.addContextChange(); //Add context change form second Order. if (countOrdr > 0) { LineItem.addContextChange(); } countOrdr++; } else if (line.startsWith("Line")) { LineItem.addValue(""); LineNumber.addValue(values[1]); LineNumber.addContextChange(); Material.addValue(values[2]); Material.addContextChange(); //Add context change form second LineItem. if (countLine > 0) { TaxLine.addContextChange(); } countLine++; } else if (line.startsWith("Taxl")) { TaxLine.addValue(""); Type.addValue(values[1]); Type.addContextChange(); Amount.addValue(values[2]); Amount.addContextChange(); }
}
}Note:-
Comma(delimiter), 'Cust', 'Ordr', 'Line' and 'Taxl' arbitrary values are used to demonstrate the concept.
If some fields are optional in input, to avoid ArrayIndexOutOfBoundsException append delimiters.
for (String line : eachLine) {
line = line + ",,"; //Append commas for optional fields.
values = line.split(",");
....
}
If input is fixed length file (instead of delimited), use java String method substring(int beginIndex, int endIndex).
FYI. Other solution available on SCN.
XI/PI: Convert Flat File to Deeply Nested XML Structures Using Only Graphical Mapping