MultirecordEngine Example

The idea of this engine is to parse files with different record types (this engine don't use any hicherarchy structure like the master-details, all the records are in linear relation for it)

With the MultiRecordEngine you can parse also mixed delimited and fixed length records. For example you can parse this extrange file:

10248|VINET|5|04071996|01081996|16071996|3|32.38 10249|TOMSP|6|05071996|16081996|10071996|1|11.61 ALFKI;Alfreds Futterkiste;Maria Anders;Sales Representative;Obere Str. 57;Berlin;Germany ANATR;Ana Trujillo Emparedados y helados;Ana Trujillo;Owner;Avda. de la Constitución 2222;México D.F.;Mexico 10250|HANAR|4|08071996|05081996|12071996|2|65.83 10111314012345 11101314123456 10251|VICTE|3|08071996|05081996|15071996|1|41.34 11121314901234 10101314234567 ANTON;Antonio Moreno Taquería;Antonio Moreno;Owner;Mataderos 2312;México D.F.;Mexico BERGS;Berglunds snabbköp;Christina Berglund;Order Administrator;Berguvsvägen 8;Luleå;Sweden ...............

These file contains Three record types: Customers (begins with letters, | delimited), Orders (begin with numbers, ';' delimited and the sample type of the first example.

To work with this engine you must create one instance of it in this way:

MultiRecordEngine engine; engine = new MultiRecordEngine(typeof(OrdersVerticalBar), typeof(CustomersSemiColon), typeof(SampleType)); engine.RecordSelector = new RecordTypeSelector(CustomSelector); object[] res = engine.ReadFile("MultiRecords.txt");

In the res array you have all the records in the file, each one with the corresponding type.

And the Selector Method can look like this:

Type CustomSelector(MultiRecordEngine engine, string record) { if (Char.IsLetter(record[0])) return typeof(CustomersSemiColon); else if (record.Length == 14) return typeof(SampleType); else return typeof(OrdersVerticalBar); }

Enjoy it !!!

See also

Must Read - Quick Start Guide - Attributes List - F.A.Q. - Examples of Use - Contacts & Credits - Donations

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