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Showing content from http://www.ncbi.nlm.nih.gov/IEB/ToolBox/CPP_DOC/doxyhtml/row__reader_8hpp_source.html below:

NCBI C++ ToolKit: include/util/row_reader.hpp Source File

<

TFieldType>

(TFieldType field_type,

& field_props =

())

<

TTraits>

;

<

TTraits>

;

<

TTraits>

<

TValue>

TValue

(

)

;

<

TValue> TValue

(

)

;

<TTraits>;

<

TTraits>

<

TTraits>

& sourcename,

& sourcename,

(

TTraits::ERR_ValidationMode validation_mode

= TTraits::eRR_ValidationMode_Default,

TTraits::TRR_Context

(

)

;

<

TTraits>

(m_RowReader ==

)

(x_GetStringValue(), fmt);

(x_GetStringValue(), fmt);

exc.

(m_RowReader->GetBasicContext().Clone());

m_RowReader->GetBasicContext().Clone());

}

(

exception& exc) {

exc.

(), m_RowReader->GetBasicContext().Clone());

+ fmt.

(),

m_RowReader->GetBasicContext().Clone());

<

TTraits>

<

TValue>

(m_RowReader ==

) {

exc.

(m_RowReader->GetBasicContext().Clone());

+

(

(TValue).name()),

m_RowReader->GetBasicContext().Clone());

}

(

exception& exc) {

exc.

(), m_RowReader->GetBasicContext().Clone());

+

(

(TValue).name()),

m_RowReader->GetBasicContext().Clone());

<

TTraits>

<

TValue> TValue

default_value;

Get<TValue>();

<

TTraits>

<

TTraits>

m_OriginalData;

<

TTraits>

<

TTraits>

m_OriginalDataCopy(other_field.m_OriginalData.

(),

other_field.m_OriginalData.

()),

m_IsNull(other_field.m_IsNull),

m_Translated(other_field.m_Translated),

m_OriginalData(m_OriginalDataCopy.

(), m_OriginalDataCopy.

()),

m_TranslatedValue(other_field.m_TranslatedValue),

<

TTraits>

m_OriginalDataCopy(std::move(other_field.m_OriginalDataCopy)),

m_IsNull(other_field.m_IsNull),

m_Translated(other_field.m_Translated),

m_OriginalData(m_OriginalDataCopy.

(), m_OriginalDataCopy.

()),

m_TranslatedValue(std::move(other_field.m_TranslatedValue)),

m_RowReader(other_field.m_RowReader)

<

TTraits>

(

!= &other_field) {

m_OriginalData.assign(m_OriginalDataCopy.data(),

m_OriginalDataCopy.size());

m_RowReader =

;

<

TTraits>

(

!= &other_field) {

m_OriginalDataCopy = std::move(other_field.m_OriginalDataCopy);

m_IsNull = other_field.m_IsNull;

m_Translated = other_field.m_Translated;

m_OriginalData.assign(m_OriginalDataCopy.data(),

m_OriginalDataCopy.size());

m_TranslatedValue = std::move(other_field.m_TranslatedValue);

m_RowReader = other_field.m_RowReader;

<

TTraits>

,

);

m_TranslatedValue;

m_OriginalData;

<

TTraits>

<

TTraits>

m_RawData(other_row.m_RawData),

m_RowType(other_row.m_RowType),

m_MetaInfo(other_row.m_MetaInfo),

<

TTraits>

(

!= &other_row) {

m_RowReader =

;

x_CopyFields(other_row);

<

TTraits>

m_RawData(std::move(other_row.m_RawData)),

m_RowType(other_row.m_RowType),

m_MetaInfo(std::move(other_row.m_MetaInfo)),

m_Copied(other_row.m_Copied),

m_Fields(std::move(other_row.m_Fields)),

m_FieldsSize(other_row.m_FieldsSize),

m_FieldsCapacity(other_row.m_FieldsCapacity),

m_RowReader(other_row.m_RowReader)

<

TTraits>

m_RawData = std::move(other_row.

);

m_MetaInfo = std::move(other_row.

);

m_Fields = std::move(other_row.

);

<

TTraits>

(field >= GetNumberOfFields()) {

(m_RowReader !=

)

ctxt = m_RowReader->GetBasicContext().

();

, ctxt);

m_Fields[field];

<

TTraits>

index = x_GetFieldIndex(field);

(index >= GetNumberOfFields()) {

(m_RowReader !=

)

ctxt = m_RowReader->GetBasicContext().

();

+ field +

, ctxt);

m_Fields[index];

<

TTraits>

<

TTraits>

(m_FieldsSize);

<

TTraits>

<

TTraits>

<

TTraits>

m_FieldsSize = new_size;

(m_FieldsCapacity < new_size) {

<

TTraits>

ptrdiff_t raw_data_delta = m_RawData.data() - other_row.

.data();

(

index = 0; index < m_FieldsSize; ++index) {

m_Fields[index].m_RowReader =

;

<

TTraits>

m_MetaInfo->SetFieldName(field, name, user_init);

<

TTraits>

m_MetaInfo->SetFieldType(field,

, user_init);

<

TTraits>

m_MetaInfo->SetFieldTypeEx(field,

, extended_type, user_init);

<

TTraits>

m_MetaInfo->GetDescribedFieldCount();

<

TTraits>

vector<typename CRR_Row<TTraits>::SFieldMetaInfo>

vector<SFieldMetaInfo>

;

(m_MetaInfo->m_FieldsInfo.empty())

last_index =

(

(to),

m_MetaInfo->m_FieldsInfo.size() - 1);

(

index = from; index <= to && index <= last_index; ++index) {

& field_info = m_MetaInfo->m_FieldsInfo[index];

(field_info.IsInitialized()) {

.is_name_initialized =

(

.is_name_initialized)

.name = *field_info.m_FieldName;

.is_type_initialized =

.type = field_info.m_FieldType;

.is_ext_type_initialized =

.ext_type = field_info.m_FieldExtType;

<

TTraits>

m_MetaInfo->Clear(

);

<

TTraits>

m_MetaInfo->Clear(

);

<

TTraits>

m_MetaInfo.Reset(new_meta);

<

TTraits>

(m_RowReader ==

)

m_MetaInfo->GetFieldIndexByName(field);

m_MetaInfo->GetFieldIndexByName(field);

exc.

(m_RowReader->GetBasicContext().Clone());

+

(field) +

,

m_RowReader->GetBasicContext().Clone());

}

(

exception& exc) {

exc.

(), m_RowReader->GetBasicContext().Clone());

+

(field) +

,

m_RowReader->GetBasicContext().Clone());

<

TTraits>

<

TTraits>

& sourcename,

,

);

<

TTraits>

<

TTraits>

<

TTraits>

& sourcename,

,

);

<

TTraits>

<

TTraits>

TTraits::ERR_ValidationMode validation_mode,

,

);

phys_lines_read;

.SetValidationMode(validation_mode);

, ctxt);

}

(

exception& exc) {

, ctxt);

field_validation_mode);

, ctxt);

}

(

exception& exc) {

, ctxt);

<

TTraits>

<

TTraits>

<

TTraits>

& name)

<

TTraits>

<

TTraits>

<

TTraits>

& name)

<

TTraits>

<

TTraits>

<

TTraits>

vector<typename CRR_Row<TTraits>::SFieldMetaInfo>

<

TTraits>

<

TTraits>

<

TTraits>

<

TTraits>

<

TTraits>

<

TTraits>

,

);

<

TTraits>

<

TTraits>

TTraits::TRR_Context

<

TTraits>

,

}

(

exception& exc) {

<

TTraits>

,

);

phys_lines_read;

eInvalidAction,

+

,

field_index <

.size(); ++field_index) {

field_index,

[field_index],

eLineProcessing,

, ctxt);

}

(

exception& exc) {

, ctxt);

<

TTraits>

open_mode |= ios_base::binary;

<

TTraits>

<

TTraits>

<

TTraits>

(

<< exc.

());

}

(

exception& exc) {

(

<< exc.

());

(

);

<

TTraits>

<

TTraits>

.OnEvent(event, event_mode);

+

}

(

exception& exc) {

+

<

TTraits>

<

TTraits>

x_CheckFieldAccess();

m_RowReader->m_CurrentRow[field];

<

TTraits>

x_CheckDereferencing();

m_RowReader->m_CurrentRow;

<

TTraits>

x_CheckDereferencing();

&m_RowReader->m_CurrentRow;

<

TTraits>

(m_RowReader ==

.m_RowReader);

(m_IsEndIter ||

.m_IsEndIter);

(m_RowReader !=

.m_RowReader)

(!m_IsEndIter && !

.m_IsEndIter)

,

);

(m_IsEndIter &&

.m_IsEndIter)

.m_RowReader->m_AtEnd

&& (

.m_RowReader->m_NextDataSource.m_Stream ==

);

m_RowReader->m_AtEnd

&& (m_RowReader->m_NextDataSource.m_Stream ==

);

<

TTraits>

<

TTraits>

: m_RowReader(

.m_RowReader), m_IsEndIter(

.m_IsEndIter)

<

TTraits>

<

TTraits>

m_RowReader =

.m_RowReader;

m_IsEndIter =

.m_IsEndIter;

<

TTraits>

m_RowReader->x_ReadNextRow();

<

TTraits>

m_RowReader(s), m_IsEndIter(is_end)

<

TTraits>

<

TTraits>

(m_RowReader->m_Validation)

,

);

(m_IsEndIter || m_RowReader->m_AtEnd)

,

);

(!m_RowReader->m_RawDataAvailable)

,

<

TTraits>

(m_RowReader->m_Validation)

,

);

(m_RowReader->m_AtEnd && m_RowReader->m_NextDataSource.m_Stream ==

))

,

);

<

TTraits>

(m_RowReader->m_Validation)

,

);

(m_IsEndIter || m_RowReader->m_AtEnd)

,

);

The class represents the current delimited row stream context.

virtual CRR_Context * Clone(void) const

Basic or an extended field type with an added arbitrary string property.

CRR_FieldType(TFieldType field_type, const string &field_props=string())

TFieldType GetType(void) const

string GetProps(void) const

A single field in a row abstraction.

CTempString m_OriginalData

const CTempString GetOriginalData(void) const

Get the field original data.

bool IsNull(void) const

Check if the field value is NULL.

CTempString x_GetStringValue(void) const

TValue GetWithDefault(const TValue &default_value) const

Get the converted field value.

CRowReader< TTraits > * m_RowReader

string m_OriginalDataCopy

TValue Get(void) const

Get the converted field value.

CRR_Field & operator=(const CRR_Field &other_field)

Represents one row from an input stream.

CRowReader< TTraits > * m_RowReader

vector< CRR_Field< TTraits > > m_Fields

CRR_Row()

Construct an empty row.

TFieldNo x_GetFieldIndex(CTempString field) const

void x_ClearFieldsInfo(void)

void x_SetFieldType(TFieldNo field, const CRR_FieldType< ERR_FieldType > &type, bool user_init)

void x_AdjustFieldsSize(size_t new_size)

CRef< CRR_MetaInfo< TTraits > > m_MetaInfo

vector< SFieldMetaInfo > GetFieldsMetaInfo(TFieldNo from=0, TFieldNo to=numeric_limits< TFieldNo >::max())

Get the collected fields meta info.

ERR_RowType GetType(void) const

Get the row type.

void x_SetFieldName(TFieldNo field, const string &name, bool user_init)

TFieldNo GetNumberOfFields(void) const

Get the number of fields in the row.

void x_ClearTraitsProvidedFieldsInfo(void)

void x_SetFieldTypeEx(TFieldNo field, const CRR_FieldType< ERR_FieldType > &type, const CRR_FieldType< typename TTraits::TExtendedFieldType > &extended_type, bool user_init)

CRR_Row & operator=(const CRR_Row &other_row)

void x_CopyFields(const CRR_Row &other_row)

void x_DetachMetaInfo(void)

TFieldNo GetDescribedFieldCount(void) const

Get the number of a fields for which any kind of meta info is provided.

CTempString GetOriginalData(void) const

Get the row original data.

const CRR_Field< TTraits > & operator[](TFieldNo field) const

Get a row field.

static void GetFieldValueConverted(const CTempString &str_value, CTime &converted)

static string ERR_EventToString(ERR_Event event)

static void CheckExistanceAndPermissions(const string &sourcename)

static ERR_RowType ActionToRowType(ERR_Action action)

static string ERR_ActionToString(ERR_Action action)

Exception to be used throughout API.

void SetContext(CRR_Context *ctxt)

A (forward-only) iterator to iterate over the rows from a stream.

CRR_Row< TTraits > & operator*(void) const

Get a reference to the current row.

CRowIterator & operator=(const CRowIterator &iter)

bool operator==(const CRowIterator &iter) const

Compare this iterator with another.

bool operator!=(const CRowIterator &iter) const

This is an exact negation of operator==.

CRowIterator & operator++(void)

Advance the iterator to the next row.

void x_CheckDereferencing(void) const

const CRR_Field< TTraits > & operator[](TFieldNo field) const

Get a row field.

void x_CheckFieldAccess(void) const

void x_CheckAdvancing(void) const

CRowReader< TTraits > * m_RowReader

CRowIterator(const CRowIterator &iter)

CRR_Row< TTraits > * operator->(void) const

Get a pointer to the current row.

Callback style template to iterate over a row stream.

TStreamPos GetCurrentRowPos(void) const

Get the absolute position (in the current data source) of the beginning of the row that is currently ...

void SetDataSource(CNcbiIstream *is, const string &sourcename, EOwnership ownership=eNoOwnership)

Switch to processing data from another stream.

void Validate(typename TTraits::ERR_ValidationMode validation_mode=TTraits::eRR_ValidationMode_Default, ERR_FieldValidationMode field_validation_mode=eRR_FieldValidation)

Read and validate-only the stream, calling TTraits::Validate(row, validation_mode) on each row.

void ClearFieldsInfo(void)

Clear the information about all field names, types and extended types.

CRowIterator begin(void)

It works exactly(!) like CRowIterator::operator++, except it creates new iterator and therefore can a...

TTraits & GetTraits(void)

Get the traits object.

SRR_SourceInfo m_NextDataSource

TLineNo GetCurrentLineNo(void) const

Get the number of the line that is currently being processed.

void x_OpenFile(SRR_SourceInfo &stream_info)

CRR_Row< TTraits > m_CurrentRow

CRowReader & operator=(const CRowReader &)=delete

CRowReader & operator=(CRowReader &&)=delete

size_t m_PreviousPhysLinesRead

CRR_Context GetBasicContext(void) const

Get basic context.

vector< CTempString > m_Tokens

void SetFieldTypeEx(TFieldNo field, const CRR_FieldType< ERR_FieldType > &type, const CRR_FieldType< typename TTraits::TExtendedFieldType > &extended_type)

Set the (trait specific) data type of the field.

void x_ClearTraitsProvidedFieldsInfo(void)

CRR_Context * x_GetContextClone(void)

CRowReader(const CRowReader &)=delete

CRR_Field< TTraits > CField

bool x_GetRowData(size_t *phys_lines_read)

TStreamPos m_CurrentRowPos

ERR_EventAction x_OnEvent(ERR_Event event)

vector< typename CRR_Row< TTraits >::SFieldMetaInfo > GetFieldsMetaInfo(TFieldNo from=0, TFieldNo to=numeric_limits< TFieldNo >::max())

Get the collected fields meta info.

void x_SetFieldName(TFieldNo field, const string &name)

CRowReader(CRowReader &&)=delete

CRowIterator const_iterator

TFieldNo GetDescribedFieldCount(void) const

Get the number of a fields for which any kind of meta info is provided.

SRR_SourceInfo m_DataSource

void x_SetFieldType(TFieldNo field, const CRR_FieldType< ERR_FieldType > &type)

void SetFieldType(TFieldNo field, const CRR_FieldType< ERR_FieldType > &type)

Set the (basic) data type of the field.

CRowIterator end(void) const

Get iterator pointing to the end of the current underlying data source.

TTraits::TRR_Context GetContext(void) const

Get traits context.

CRowReader()

Construct a row reader.

void SetFieldName(TFieldNo field, const string &name)

Set the field name.

void x_UpdateCurrentLineNo(size_t phys_lines_read)

void x_SetFieldTypeEx(TFieldNo field, const CRR_FieldType< ERR_FieldType > &type, const CRR_FieldType< typename TTraits::TExtendedFieldType > &extended_type)

CTempString implements a light-weight string on top of a storage buffer whose lifetime management is ...

Include a standard set of the NCBI C++ Toolkit most basic headers.

bool operator==(const CEquivRange &A, const CEquivRange &B)

@ eTakeOwnership

An object can take ownership of another.

@ eNoOwnership

No ownership is assumed.

#define ERR_POST(message)

Error posting with file, line number information but without error codes.

#define NCBI_THROW2(exception_class, err_code, message, extra)

Throw exception with extra parameter.

#define NCBI_RETHROW2(prev_exception, exception_class, err_code, message, extra)

Re-throw exception with extra parameter.

virtual const char * what(void) const noexcept

Standard report (includes full backlog).

uint32_t Uint4

4-byte (32-bit) unsigned integer

uint64_t Uint8

8-byte (64-bit) unsigned integer

#define END_NCBI_SCOPE

End previously defined NCBI scope.

#define BEGIN_NCBI_SCOPE

Define ncbi namespace.

Int8 NcbiStreamposToInt8(NCBI_NS_STD::char_traits< char >::pos_type stream_pos)

Convert stream position to 64-bit int.

IO_PREFIX::istream CNcbiIstream

Portable alias for istream.

IO_PREFIX::ifstream CNcbiIfstream

Portable alias for ifstream.

const char * data(void) const

Return a pointer to the array represented.

static enable_if< is_arithmetic< TNumeric >::value||is_convertible< TNumeric, Int8 >::value, string >::type NumericToString(TNumeric value, TNumToStringFlags flags=0, int base=10)

Convert numeric value to string.

size_type size(void) const

Return the length of the represented array.

const string & GetString(void) const

Get format string.

enum ENcbiOwnership EOwnership

Ownership relations between objects.

const struct ncbi::grid::netcache::search::fields::SIZE size

Defines classes: CDirEntry, CFile, CDir, CSymLink, CMemoryFile, CFileUtil, CFileLock,...

std::istream & in(std::istream &in_, double &x_)

Uint4 TFieldNo

Field number (zero based)

ERR_FieldValidationMode

Whether to check validity of the fields (names and/or values)

@ eRR_FieldValidation

check that the field's value (or name) is valid

@ eRR_NoFieldValidation

don't validate fields' value and name

@ eRR_Metadata

row contains metadata

@ eRR_Invalid

row is invalid

@ eRR_Data

row contains data

@ eRR_Comment

row contains a comment

Uint8 TLineNo

Line number (in the data stream, zero based)

Uint8 TStreamPos

Position in the data stream (zero based)

ERR_FieldType

Basic field data types.

@ eRR_UseOriginal

No translation done.

@ eRR_Translated

The value has been translated to another string.

@ eRR_Null

The value has been translated to NULL.

ERR_Action

Delimited stream traits use the ERR_Action members to instruct what should be done next.

@ eRR_Continue_Data

Continue processing this line, in full.

@ eRR_Interrupt

Stop processing the stream.

@ eRR_Skip

Skip this line.

@ fRR_OpenFile_AsBinary

open file in a binary mode

ERR_EventAction

How to react to the potentially disruptive events.

@ eRR_EventAction_Continue

Resume processing.

@ eRR_EventAction_Stop

Stop further processing.

@ eRR_EventAction_Default

Do some default action.

ERR_EventMode

Indicate whether the "ERR_Event" event (passed to the OnEvent() callback) occured during regular read...

@ eRR_EventMode_Validating

We are performing data validation.

@ eRR_EventMode_Iterating

We are iterating through the rows.

ERR_Event

CRowReader passes such events to the Traits via OnEvent() callback.

@ eRR_Event_SourceEnd

Data source has hit EOF.

@ eRR_Event_SourceBegin

Data source has started or been switched (no reads yet though).

@ eRR_Event_SourceError

Data source has hit an error on read.

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