Flatpack

Flatpack Component

The Flatpack component supports fixed width and delimited file parsing via the FlatPack library.
Notice: This component only supports consuming from flatpack files to Object model. You can not (yet) write from Object model to flatpack format.

URI format

flatpack:[delim|fixed]:flatPackConfig.pzmap.xml

or for a delimited file handler with no configuration file just use

flatpack:someName

Examples

flatpack:fixed:foo.pzmap.xml creates a fixed width endpoint using the foo.pzmap.xml file configuration
flatpack:delim:bar.pzmap.xml creates a delimited endpoint using the bar.pzmap.xml file configuration
flatpack:foo creates a delimited endpoint called foo with no file configuration

URI Options

Name	Default Value	Description
delimiter	','	The default character delimiter for delimited files
textQualifier	'"'	The text qualifier delimited files
ignoreFirstRecord	true	Whether the first line is ignored for delimited files (for the column headers)
splitRows	true	As of Camel 1.5 the component can either process each row one by one or the entire content at once.

Message Headers

Camel will store the following headers on the IN message:

Header	Description
camelFlatpackCounter	The current row index. For `splitRows=false` the counter is the total number of rows.

Message Body

The component delivers the data in the IN message as a org.apache.camel.component.flatpack.DataSetList object that have converters for java.util.Map or java.util.List.
Usually you want the Map if you process one row at a time (splitRows=true). And the List for the entire content (splitRows=false), where each element in the list is a Map.
Each Map contain the key for the column name and its corresponding value.

For example to get the firstname from the sample below:

  Map row = exchange.getIn().getBody(Map.class);
  String firstName = row.get("FIRSTNAME");

However you can also always get it as a List (even for splitRows=true). The same example:

  List data = exchange.getIn().getBody(List.class);
  Map row = (Map)data.get(0);
  String firstName = row.get("FIRSTNAME");

Header and Trailer records

In Camel 1.5 onwards the header and trailer notions in Flatpack is supported. However it is required that you must use fixed record id names:

header for the header record (must be lowercase)
trailer for the trailer record (must be lowercase)

The example below illustrates this fact that we have a header and a trailer. You can omit one or both of them if not needed.

    <RECORD id="header" startPosition="1" endPosition="3" indicator="HBT">
        <COLUMN name="INDICATOR" length="3"/>
        <COLUMN name="DATE" length="8"/>
    </RECORD>

    <COLUMN name="FIRSTNAME" length="35" />
    <COLUMN name="LASTNAME" length="35" />
    <COLUMN name="ADDRESS" length="100" />
    <COLUMN name="CITY" length="100" />
    <COLUMN name="STATE" length="2" />
    <COLUMN name="ZIP" length="5" />

    <RECORD id="trailer" startPosition="1" endPosition="3" indicator="FBT">
        <COLUMN name="INDICATOR" length="3"/>
        <COLUMN name="STATUS" length="7"/>
    </RECORD>

Using the endpoint

A common use case is sending a file to this endpoint for further processing in a separate route. For example...

  <camelContext xmlns="http://activemq.apache.org/camel/schema/spring">
    <route>
      <from uri="file://someDirectory"/>
      <to uri="flatpack:foo"/>
    </route>

    <route>
      <from uri="flatpack:foo"/>
      ...
    </route>
  </camelContext>

You can also convert the payload of each message created to a Map for easy Bean Integration

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