The Flatpack component ships with the Flatpack data format that can be used to format between fixed width or delimited text messages to a
List of rows as
- marshal = from
List<Map<String, Object>> to
OutputStream (can be converted to
- unmarshal = from
java.io.InputStream (such as a
String) to a
java.util.List as an
The result of the operation will contain all the data. If you need to process each row one by one you can split the exchange, using Splitter.
Notice: The Flatpack library does currently not support header and trailers for the marshal operation.
The data format has the following options:
The flatpack pzmap configuration file. Can be omitted in simpler situations, but its preferred to use the pzmap.
Delimited or fixed.
Whether the first line is ignored for delimited files (for the column headers).
If the text is qualified with a char such as
The delimiter char (could be
, or similar)
Uses the default Flatpack parser factory.
Camel 2.9.7 and 2.10.5 onwards: Allows for lines to be shorter than expected and ignores the extra characters.
Camel 2.9.7 and 2.10.5 onwards: Allows for lines to be longer than expected and ignores the extra characters.
To use the data format, simply instantiate an instance and invoke the marshal or unmarshal operation in the route builder:
FlatpackDataFormat fp = new FlatpackDataFormat();
The sample above will read files from the
order/in folder and unmarshal the input using the Flatpack configuration file
INVENTORY-Delimited.pzmap.xml that configures the structure of the files. The result is a
DataSetList object we store on the SEDA queue.
FlatpackDataFormat df = new FlatpackDataFormat();
In the code above we marshal the data from a Object representation as a
List of rows as
Maps. The rows as
Map contains the column name as the key, and the the corresponding value. This structure can be created in Java code from e.g. a processor. We marshal the data according to the Flatpack format and convert the result as a
String object and store it on a JMS queue.
To use Flatpack in your camel routes you need to add the a dependency on camel-flatpack which implements this data format.
If you use maven you could just add the following to your pom.xml, substituting the version number for the latest & greatest release (see the download page for the latest versions).