CsvUtil::CsvStringWriter Class Reference

The CsvStringWriter class for in-memory string CSV creation. More...

Inheritance diagram for CsvUtil::CsvStringWriter:

Public Member Methods
	constructor (*hash opts)
	creates the CsvStringWriter single-type mode with content in the memory More...
	constructor (hash spec, hash opts)
	creates the CsvStringWriter single-type mode with content in the memory More...
string	getContent ()
	Get the current in-memory content as a string.
string	write (list l)
	Stream the contents of the list and return CSV-formatted output as a string. More...
string	write (Qore::AbstractIterator iterator)
	Stream iterator and return a CSV-formatted output string. More...
Public Member Methods inherited from CsvUtil::AbstractCsvWriter
	constructor (string n_errname, *hash< auto > n_opts)
	Creates the AbstractCsvWriter in single-type mode. More...
	constructor (string n_errname, hash< auto > spec, hash< auto > n_opts)
	Creates the AbstractCsvWriter in single-type mode. More...
*hash< string, AbstractDataField >	getRecordType ()
	Returns the description of the record type, if any.
	write (list< auto > l)
	Stream the contents of the list into the output. More...
	write (Qore::AbstractIterator iterator)
	Stream an iterator into the output. More...
	write (Qore::SQL::SQLStatement iterator)
	Stream an iterator into the output. More...
	writeLine (hash< auto > values)
	Write a line with headers-values hash. More...
	writeLine (list< auto > values)
	Write a line with a list of values; data are checked against column rules. More...
	writeLine (string type, hash< auto > values)
	Write a line for a specific record from a hash to the output. More...
	writeLine (string type, list< auto > values)
	Write a line with headers-values list. More...

Additional Inherited Members
Private Member Methods inherited from CsvUtil::AbstractCsvWriter
string	prepareRawLine (list< auto > values)
	Prepare a string (line with EOF) with formatting and escaping. More...
	processCommonOptions (*hash< auto > n_opts, int C_OPTx)
	Process options and set internal variables.
	processSpec ()
	Process specification and set internal variable for mapping.
	writeHeaders ()
	Write csv headers.
abstract	writeRawLine (list< auto > values)
	This method must be overridden in child classes to provide the output implementation.
Private Attributes inherited from CsvUtil::AbstractCsvWriter
string	baseTemplate
	base template for value format
int	block = 1000
	block size for bulk DML
bool	checkElementCounts = False
	verify the column count for every row; if a row does not match, then throw a CSVFILEITERATOR-DATA-ERROR exception
string	encoding
	output file character encoding
string	eol = EOL_UNIX
	end of line sequence
*code	info_log
	a closure/call reference for informational logging when using write(SQLStatement)
int	lineNo = 0
	the latest line number
hash	m_out_by_idx
	mapping output field by index
hash	m_out_by_name
	mapping output field by name
string	m_quoteEscapeChar = "\\"
	quote escape character
bool	optimal_quotes = True
	stores the optimal quotes option
const	Options
	valid options for the object (a hash for quick lookups of valid keys)
string	quote = "\""
	field content delimiter
string	separator = ","
	field separator
bool	write_headers = True
	this flag determines if any stored headers are output

Detailed Description

The CsvStringWriter class for in-memory string CSV creation.

See also

• CsvWriter for a stream-based class providing the same functionality as this class in a more generic way

Member Function Documentation

constructor() [1/2]

CsvUtil::CsvStringWriter::constructor

(

*hash

opts

)

creates the CsvStringWriter single-type mode with content in the memory

Parameters

opts	AbstractCsvWriter Constructor Option Hash Overview

Exceptions

CSVSTRINGITER-ERROR

in the case of incorrect options

constructor() [2/2]

CsvUtil::CsvStringWriter::constructor	(	hash	spec,
		hash	opts
	)

creates the CsvStringWriter single-type mode with content in the memory

Parameters

spec	a hash of field and type definitions; see Option Field Hash for more information
opts	AbstractCsvWriter Constructor Option Hash Overview

Exceptions

CSVSTRINGITER-ERROR

in the case of incorrect options

write() [1/2]

string CsvUtil::CsvStringWriter::write

(

list

l

)

Stream the contents of the list and return CSV-formatted output as a string.

Parameters

l	a list of input data to format as CSV output

Returns

the CSV-formatted output string corresponding to the input data

The list has to contain List or Hash elements that can be formatted according to the CSV definition

Exceptions

CSVFILEWRITER-DATA-ERROR

when the data does not fit defined column constraints or when the list elements have the wrong type or values

write() [2/2]

string CsvUtil::CsvStringWriter::write

(

Qore::AbstractIterator

iterator

)

Stream iterator and return a CSV-formatted output string.

Parameters

iterator

an iterator to stream data

Returns

the CSV-formatted output string corresponding to the input data

The iterator has to contain List or Hash as a return value of getValue() method.

Exceptions

CSVFILEWRITER-DATA-ERROR

when the data does not fit defined column constraints or when getValue does not return list or hash