FixedLengthUtil::FixedLengthAbstractWriter Class Reference

Structured abstract writer for fixed-length lines. More...

#include <FixedLengthAbstractWriter.qc.dox.h>

Inheritance diagram for FixedLengthUtil::FixedLengthAbstractWriter:

Public Member Methods
bool	checkTransition (*string from, *string to)
	A verification function to be called for each line. This method can be overridden to achieve a begin-to-end validation of the whole input file. More...
	constructor (hash< auto > specs, *hash< auto > opts)
	creates the FixedLengthAbstractWriter object More...
string	formatLine (hash< auto > line)
	Formats a single line from a hash describing the record type and its contents. More...
int	linesCount ()
	get processed lines count
abstract	write (hash< auto > line)
	Renders a single line for a single input record hash to the output. More...
abstract	write (list< auto > lines)
	iterates the input records and writes rendered versions of all input records to the output More...
abstract	write (Qore::AbstractIterator lines)
	iterates the input records and writes rendered versions of all input records to the output More...
Public Member Methods inherited from FixedLengthUtil::FixedLengthBase
	constructor (hash< auto > m_specs, *hash< auto > m_opts)
	Creates the object from the record specifications.
*hash< string, AbstractDataField >	getRecordType ()
	Returns the description of the record type, if any.

Additional Inherited Members
Private Attributes inherited from FixedLengthUtil::FixedLengthBase
const	GlobalOptionMap
	Translates from global options to data provider options.
*hash< auto >	m_opts
	Global input or output options.
hash< auto >	m_specs
	The record specifications.

Detailed Description

Structured abstract writer for fixed-length lines.

Member Function Documentation

checkTransition()

bool FixedLengthUtil::FixedLengthAbstractWriter::checkTransition	(	*string	from,
		*string	to
	)

A verification function to be called for each line. This method can be overridden to achieve a begin-to-end validation of the whole input file.

Parameters

from	Type of previous line being processed
to	Type of the current line being processed

constructor()

FixedLengthUtil::FixedLengthAbstractWriter::constructor	(	hash< auto >	specs,
		*hash< auto >	opts
	)

creates the FixedLengthAbstractWriter object

Parameters

specs	Fixed-length line specification; see Specification Hash for more information
opts	Global options; see Global Options for valid values

formatLine()

string FixedLengthUtil::FixedLengthAbstractWriter::formatLine

(

hash< auto >

line

)

Formats a single line from a hash describing the record type and its contents.

Parameters

line

a hash describing the record to be formatted; the hash must have the following keys: "type": a string giving the record type (must be defined in Specification Hash given in the constructor) "record": a hash giving the input record to be rendered (with keys as defined in the Record Description Hash for the record identified by the type argument)

Exceptions

INVALID-LINE-DATA	line argument missing either type or record keys
INVALID-RECORD	record name (type key in the record hash) not recognized
FIELD-INPUT-ERROR	the input value is too large to render into the output field
RECORD-TRANSITION-ERROR	a record transition error occurred; an invalid record sequence was given in the input data

write() [1/3]

abstract FixedLengthUtil::FixedLengthAbstractWriter::write ( hash< auto >  line )

pure virtual

Renders a single line for a single input record hash to the output.

Parameters

line

A hash representing input data to be written to the output; the hash must have the following keys: "type": a string giving the record type (must be defined in Specification Hash given in the constructor) "record": a hash giving the input record to be rendered (with keys as defined in the Record Description Hash for the record identified by the type argument)

Exceptions

INVALID-RECORD	record name (type key in the record hash) not recognized
FIELD-INPUT-ERROR	the input value is too large to render into the output field
RECORD-TRANSITION-ERROR	a record transition error occurred; an invalid record sequence was given in the input data

Implemented in FixedLengthUtil::FixedLengthDataWriter, FixedLengthUtil::FixedLengthFileWriter, and FixedLengthUtil::FixedLengthWriter.

write() [2/3]

abstract FixedLengthUtil::FixedLengthAbstractWriter::write ( list< auto >  lines )

pure virtual

iterates the input records and writes rendered versions of all input records to the output

Parameters

lines

A list of input records; each list value must be a hash with the following keys: "type": a string giving the record type (must be defined in Specification Hash given in the constructor) "record": a hash giving the input record to be rendered (with keys as defined in the Record Description Hash for the record identified by the type argument)

Exceptions

INVALID-RECORD	record name (type key in the record hash) not recognized
FIELD-INPUT-ERROR	the input value is too large to render into the output field
RECORD-TRANSITION-ERROR	a record transition error occurred; an invalid record sequence was given in the input data

Implemented in FixedLengthUtil::FixedLengthDataWriter, FixedLengthUtil::FixedLengthFileWriter, and FixedLengthUtil::FixedLengthWriter.

write() [3/3]

abstract FixedLengthUtil::FixedLengthAbstractWriter::write ( Qore::AbstractIterator  lines )

pure virtual

iterates the input records and writes rendered versions of all input records to the output

Parameters

lines

An iterator to stream input records; each iterator value must be a hash with the following keys: "type": a string giving the record type (must be defined in Specification Hash given in the constructor) "record": a hash giving the input record to be rendered (with keys as defined in the Record Description Hash for the record identified by the type argument)

Exceptions

INVALID-RECORD	record name (type key in the record hash) not recognized
FIELD-INPUT-ERROR	the input value is too large to render into the output field
RECORD-TRANSITION-ERROR	a record transition error occurred; an invalid record sequence was given in the input data

Implemented in FixedLengthUtil::FixedLengthDataWriter, FixedLengthUtil::FixedLengthFileWriter, and FixedLengthUtil::FixedLengthWriter.