org.thales.punch.libraries.punchlang.api

Class TupleBuilder

java.lang.Object

org.thales.punch.libraries.punchlang.api.TupleBuilder

public class TupleBuilder
extends Object

New builder-style class to create tuples. The basic usage is :

 Tuple t = new TupleBuilder().build();
 

You can use the csv or json primitive to easily read in your configuration or resource files:

 Tuple t = new TupleBuilder()
                 .fromCsv("london;ted\nparis;phil"))
                 .csvDelimiter(";")
                 .csvColumns(Arrays.asList(new String[]{ "city", "user"}))
                 .build();
 

Author:

dimi

Constructor Summary

Constructors

Constructor and Description
TupleBuilder() Ctor.

Method Summary

Modifier and Type	Method and Description
Tuple	build()
TupleBuilder	csvColumns(List<String> columns)
TupleBuilder	csvDelimiter(String delimiter) Set the csv delimiter
TupleBuilder	fromCsv(String csv)
TupleBuilder	fromJson(String json)
TupleBuilder	inferTypes() Guess the type of the csv columns.
TupleBuilder	lowerCaseKeys() Request all csv columns lower cases

Methods inherited from class java.lang.Object

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

Constructor Detail

TupleBuilder

public TupleBuilder()

Ctor.

Method Detail

fromCsv

public TupleBuilder fromCsv(String csv)

Parameters:

csv - a csv string

Returns:

this builder

fromJson

public TupleBuilder fromJson(String json)

Parameters:

json - a json string

Returns:

this builder

csvColumns

public TupleBuilder csvColumns(List<String> columns)

Parameters:

columns - provide the csv columns

Returns:

this builder

inferTypes

public TupleBuilder inferTypes()

Guess the type of the csv columns. If not set you get strings for all columns.

Returns:

this builder

lowerCaseKeys

public TupleBuilder lowerCaseKeys()

Request all csv columns lower cases

Returns:

this builder

csvDelimiter

public TupleBuilder csvDelimiter(String delimiter)

Set the csv delimiter

Parameters:

delimiter -

Returns:

build

public Tuple build()

Returns:

your tuple