CSV Storage Service

This StorageService implementation is responsible for accessing (locally stored) CSV files. Its behaviour is in accordance with the interface contract. The supported parameterization, i.e., the configuration properties, are defined below.

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Initialize Configuration Properties

At the moment, this service does not have a special initialization routine.

Identifier	Type	Optional?	Constraint(s)	Description

Load Configuration Properties

Identifier	Type	Optional?	Constraint(s)	Description
filePath	String			The path of the local file to read the time series from.
fieldSeparator	Character			The character that separates fields (columns) in the file.
skipHeaders	Integer		Must not be less than 0.	The number of rows to skip before the data to actually load starts.
customEndOfFileMarkers	String[]			If present, instructs the CSV parser to abort if a line whose content is equivalent to one of the custom EOF markers is encountered. This is useful for when you know a CSV file contains additional information beyond a certain point which is not relevant in that context.

Transform Configuration Properties

Identifier	Type	Optional?	Constraint(s)	Description
valueColumn	Integer		Must be less than the number of columns in the file and not less than 0.	The index of the column which contains the value component of data points in the time series to load.
timeColumn	Integer		Must be less than the number of columns in the file and not less than 0.	The index of the column which contains the time component of data points in the time series to load.
timeFormat	String		Must be a valid (Java) date-time pattern.	The date-time pattern (format) to be used when parsing the time component of a data point.

Store Configuration Properties

Identifier	Type	Optional?	Constraint(s)	Description
filePath	String			The path of the file the time series should be serialized to.
fieldSeparator	Character			The character to use to separate fields (columns) in the file.
timeFormat	String		Must be a valid (Java) date-time pattern.	The date-time pattern (format) to use when serializing the time component of a data point.
append	Boolean			If true, the serialized time series is appended to the file specified by filePath. Otherwise, it (re-)creates the file, potentially truncating pre-existing contents.
includeHeaders	Boolean			Specifies whether CSV headers should be included during time series serialization.
timeColumnLabel	String		If includeHeaders is true, this property is mandatory.	The header of the column containing time components of the data points of the serialized time series.
valueColumnLabel	String		If includeHeaders is true, this property is mandatory.	The header of the column containing value components of the data points of the serialized time series.