Package org.apache.druid.catalog.model.table

Class InputFormats.CsvFormatDefn

java.lang.Object

org.apache.druid.catalog.model.table.InputFormats.BaseFormatDefn

org.apache.druid.catalog.model.table.InputFormats.FlatTextFormatDefn

org.apache.druid.catalog.model.table.InputFormats.CsvFormatDefn

All Implemented Interfaces:

InputFormatDefn

Enclosing class:

InputFormats

public static class InputFormats.CsvFormatDefn
extends InputFormats.FlatTextFormatDefn

Definition for the CSV input format. Designed so that, in most cases, the user only need specify the format as CSV: the definition fills in the common "boiler plate" properties.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	TYPE_KEY

Fields inherited from class org.apache.druid.catalog.model.table.InputFormats.FlatTextFormatDefn

LIST_DELIMITER_PARAMETER, SKIP_ROWS_PARAMETER

Constructor Summary

Constructors

Constructor	Description
CsvFormatDefn()

Method Summary

Modifier and Type	Method	Description
InputFormat	convertFromArgs(Map<String,Object> args, List<ColumnSpec> columns, com.fasterxml.jackson.databind.ObjectMapper jsonMapper)	Create an input format instance from the values provided as arguments that correspond to the defined parameters.
protected Class<? extends InputFormat>	inputFormatClass()	The target input format class for Jackson conversions.
String	typeValue()

Methods inherited from class org.apache.druid.catalog.model.table.InputFormats.FlatTextFormatDefn

adjustValues, convertFromTable, mapFromArgs, toMap, validate

Methods inherited from class org.apache.druid.catalog.model.table.InputFormats.BaseFormatDefn

convert, convertColumns, parameters

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

TYPE_KEY

public static final String TYPE_KEY

See Also:

• Constant Field Values

Constructor Details

CsvFormatDefn

public CsvFormatDefn()

Method Details

typeValue

public String typeValue()

Returns:

the string used to identify the input format type in the serialized JSON for the input format. This is also the value used in the format property for SQL functions.

inputFormatClass

protected Class<? extends InputFormat> inputFormatClass()

Description copied from class: InputFormats.BaseFormatDefn

The target input format class for Jackson conversions.

Specified by:

inputFormatClass in class InputFormats.BaseFormatDefn

convertFromArgs

public InputFormat convertFromArgs(Map<String,Object> args,
 List<ColumnSpec> columns,
 com.fasterxml.jackson.databind.ObjectMapper jsonMapper)

Description copied from interface: InputFormatDefn

Create an input format instance from the values provided as arguments that correspond to the defined parameters. The map provided is guaranteed to have a value for each parameter defined as non-optional, and those values will be of the type defined in the parameter. The map will also contain values for the input source: the format should ignore values that don't correspond to parameters it defined.

Parameters:

args - the actual arguments for the defined parameters

columns - the columns provided in SQL, typically via the `EXTEND` clause, but perhaps from an the table spec, if the function is for a partial table

jsonMapper - the mapper to use to perform conversions

Returns:

an input format as defined by the arguments