CSV protocol handler

The CSV protocol handler parses delimiter separated text lines.

Options

• delay: Delay of reading in milliseconds (default 0). DEPRECATED: use scheduler.delay instead if not used together with delayeach
• nanodelay: Delay of reading in nanoseconds (default 0).
• delayeach: The number of lines between a delay is used (default 0).
• readfirstline: Should the first line of the file be ignored (e.g. because of header information) (default: true)
• debug: If set to true, some additional thinks are available: (default false)
• dumpEachLine: Dumps lines to the console. if set to 1 each line will be dumped
• measureEachLine: Measures the processing time between n elements that are dumped
• lastLine/maxLines: Stop processing after n elements are read

• csv.delimiter: The delimiter for splitting the input (Default: , ).

• csv.textDelimiter: The delimiter for strings (Default: ' ). Inside of strings, csv.delimiter is ignored.
• addlinenumber: Adds the line number (starting with 0) to the beginning of the line. Remember to add a proper attribute to the schema! (default false).
• csv.floatingFormatter:If used for writing, each double/float value will be formatted using this formatter (default null). See https://docs.oracle.com/javase/7/docs/api/java/text/DecimalFormat.html
• csv.numberFormatter: If used for writing, each number other than double/float value will be formatted using this formatter (default null). See https://docs.oracle.com/javase/7/docs/api/java/text/DecimalFormat.html
• csv.writeMetadata:Should metadata be written? (default false) No longer supported. Use WRITEMETADATA in Sender operator.
• csv.trim: Removes leading and trailing whitespaces in each element (default false)

Example

PQL

input = ACCESS({source='CSV', wrapper='GenericPush',
transport='File',protocol='CSV',
  dataHandler='Tuple',options=[['delimiter',','],['textDelimiter',"'"],['readfirstline','true'],['delay','100']],
  schema=[
    ['symbol','String'],
    ['points','Double'] ]
})

CQL

CREATE STREAM csv (symbol String, points Double)   
    WRAPPER 'GenericPush'
    PROTOCOL 'CSV'
    TRANSPORT 'File'
    DATAHANDLER 'Tuple'
    OPTIONS ( 'delimiter' ',', 'textDelimiter' "'", 'readfirstline' 'true', 'delay' '100')