Inheritance diagram for NodeTypeLoader:

Collaboration diagram for NodeTypeLoader:

Public Member Functions
	NodeTypeLoader ()
	Creates a new instance.

	NodeTypeLoader (RowReader &rowReader, sparksee::gdb::Graph &graph, sparksee::gdb::type_t type, sparksee::gdb::AttributeList &attrs, sparksee::gdb::Int32List &attrsPos)
	Creates a new instance. More...

virtual	~NodeTypeLoader ()
	Destructor.

void	Run () throw (sparksee::gdb::IOException, sparksee::gdb::Error)
	See the TypeLoader class Run method.

void	RunTwoPhases () throw (sparksee::gdb::IOException, sparksee::gdb::Error)
	See the TypeLoader class RunTwoPhases method.

void	RunNPhases (sparksee::gdb::int32_t partitions) throw (sparksee::gdb::IOException, sparksee::gdb::Error)
	See the TypeLoader class RunNPhases method.

void	SetLogError (const std::wstring &path) throw (sparksee::gdb::IOException)
	Sets a log error file. More...

void	SetLogOff ()
	Truns off all the error reporting. More...

void	Register (TypeLoaderListener &tel)
	Registers a new listener. More...

void	SetRowReader (RowReader &rr)
	Sets the input data source. More...

void	SetGraph (sparksee::gdb::Graph &graph)
	Sets the graph where the data will be loaded. More...

void	SetLocale (const std::wstring &localeStr)
	Sets the locale that will be used to read the data. More...

void	SetType (sparksee::gdb::type_t type)
	Sets the type to be loaded. More...

void	SetAttributes (sparksee::gdb::AttributeList &attrs)
	Sets the list of Attributes. More...

void	SetAttributePositions (sparksee::gdb::Int32List &attrsPos)
	Sets the list of attribute positions. More...

void	SetTimestampFormat (const std::wstring &timestampFormat)
	Sets a specific timestamp format. More...

void	SetFrequency (sparksee::gdb::int32_t freq)
	Sets the frequency of listener notification. More...

Protected Types

Protected Member Functions
void	Run (Mode ph, sparksee::gdb::int32_t par) throw (sparksee::gdb::IOException, sparksee::gdb::Error)
	Runs load process. More...

sparksee::gdb::bool_t	CanRun ()
	Checks that all the required settings are ready to run. More...

void	NotifyListeners (const TypeLoaderEvent &ev)
	Notifies progress to all registered listeners. More...

void	SetHeadAttribute (sparksee::gdb::attr_t attr)
	Sets the attribute that will be used to find the head of the edge. More...

void	SetHeadPosition (sparksee::gdb::int32_t pos)
	Sets the position of the head attribute in the source data. More...

void	SetTailAttribute (sparksee::gdb::attr_t attr)
	Sets the attribute that will be used to find the tail of the edge. More...

void	SetTailPosition (sparksee::gdb::int32_t pos)
	Sets the position of the tail attribute in the source data. More...

void	SetTailMEP (sparksee::gdb::MissingEndpoint mep)
	Sets the flag to create missing tail nodes when loading nodes or edges. More...

void	SetHeadMEP (sparksee::gdb::MissingEndpoint mep)
	Sets the flag to create missing head nodes when loading nodes or edges. More...

Detailed Description

NodeTypeLoader class.

Specific TypeLoader implementation for node types.

Check out the 'Data import' section in the SPARKSEE User Manual for more details on this.

Author: Sparsity Technologies http://www.sparsity-technologies.com

Member Enumeration Documentation

enum TypeLoader::Mode

protectedinherited

Load can work in different ways.

Enumerator

ONE_PHASE

Performs the load in a phases.

Load all objects an attributes at the same time.

TWO_PHASES

Performs the load in two phases.

Firstly load all objects (and create them if necessary) and secondly loads all the attributes.

Working on this mode it is necessary to build a temporary file.

N_PHASES

Performs the load in N phases.

Firstly load all objects (and create them if necessary) and secondly loads all the attributes. But in this case, attributes are loaded one by one. This way, if there are three attributes, then 4 traverses to the RowReader are necessary.

Working on this mode it is necessary to build a temporary file.

Constructor & Destructor Documentation

NodeTypeLoader::NodeTypeLoader	(	RowReader &	rowReader,
		sparksee::gdb::Graph &	graph,
		sparksee::gdb::type_t	type,
		sparksee::gdb::AttributeList &	attrs,
		sparksee::gdb::Int32List &	attrsPos
	)

inline

Creates a new instance.

Parameters

rowReader	[in] Input RowReader.
graph	[in] Graph.
type	[in] Type identifier.
attrs	[in] Attribute identifiers to be loaded.
attrsPos	[in] Attribute positions (column index >=0).

Member Function Documentation

sparksee::gdb::bool_t TypeLoader::CanRun ( )

protectedinherited

Checks that all the required settings are ready to run.

Returns: Returns true if all the settings are ready.

void TypeLoader::NotifyListeners ( const TypeLoaderEvent & ev )

protectedinherited

Notifies progress to all registered listeners.

Parameters

ev	[in] Progress event to be notified.

void TypeLoader::Register ( TypeLoaderListener & tel )

inherited

Registers a new listener.

Parameters

[in] tel TypeLoaderListener to be registered.

void TypeLoader::Run	(	Mode	ph,
		sparksee::gdb::int32_t	par
	)
throw	(	sparksee::gdb::IOException,
		sparksee::gdb::Error
	)

protectedinherited

Runs load process.

Exceptions

IOException If bad things happen reading from the RowReader.

Parameters

ph	[in] The load mode.
par	[in] Number of horizontal partitions to perform the load.

void TypeLoader::SetAttributePositions ( sparksee::gdb::Int32List & attrsPos )

inherited

Sets the list of attribute positions.

Parameters

attrsPos [in] Attribute positions (column index >=0).

void TypeLoader::SetAttributes ( sparksee::gdb::AttributeList & attrs )

inherited

Sets the list of Attributes.

Parameters

attrs [in] Attribute identifiers to be loaded

void TypeLoader::SetFrequency ( sparksee::gdb::int32_t freq )

inherited

Sets the frequency of listener notification.

Parameters

freq	[in] Frequency in number of rows managed to notify progress to all listeners

void TypeLoader::SetGraph ( sparksee::gdb::Graph & graph )

inherited

Sets the graph where the data will be loaded.

Parameters

graph [in] Graph.

void TypeLoader::SetHeadAttribute ( sparksee::gdb::attr_t attr )

protectedinherited

Sets the attribute that will be used to find the head of the edge.

This method is protected because only the Edge loaders should have it.

Parameters

attr	[in] Head Attribute

Referenced by EdgeTypeLoader::EdgeTypeLoader(), and EdgeTypeLoader::SetHeadAttribute().

void TypeLoader::SetHeadMEP ( sparksee::gdb::MissingEndpoint mep )

protectedinherited

Sets the flag to create missing head nodes when loading nodes or edges.

Parameters

flag	True if the nodes need to be created. False otherwise

Referenced by EdgeTypeLoader::EdgeTypeLoader(), and EdgeTypeLoader::SetHeadMEP().

void TypeLoader::SetHeadPosition ( sparksee::gdb::int32_t pos )

protectedinherited

Sets the position of the head attribute in the source data.

This method is protected because only the Edge loaders should have it.

Parameters

pos	[in] Head position

Referenced by EdgeTypeLoader::EdgeTypeLoader(), and EdgeTypeLoader::SetHeadPosition().

void TypeLoader::SetLocale ( const std::wstring & localeStr )

inherited

Sets the locale that will be used to read the data.

It should match the locale used in the rowreader.

Parameters

localeStr [in] The locale string for the read data. See CSVReader.

void TypeLoader::SetLogError	(	const std::wstring &	path	)
throw	(	sparksee::gdb::IOException
	)

inherited

Sets a log error file.

By default errors are thrown as a exception and the load process ends. If a log file is set, errors are logged there and the load process does not stop.

Parameters

path	[in] The path to the error log file.

Exceptions

IOException If bad things happen opening the file.

void TypeLoader::SetLogOff ( )

inherited

Truns off all the error reporting.

The log file will not be created and no exceptions for invalid data will be thrown. If you just want to turn off the logs, but abort at the first error what you should do is not call this method and not set a logError file.

void TypeLoader::SetRowReader ( RowReader & rr )

inherited

Sets the input data source.

Parameters

rr	[in] Input RowReader.

void TypeLoader::SetTailAttribute ( sparksee::gdb::attr_t attr )

protectedinherited

Sets the attribute that will be used to find the tail of the edge.

This method is protected because only the Edge loaders should have it.

Parameters

attr	[in] Tail Attribute

Referenced by EdgeTypeLoader::EdgeTypeLoader(), and EdgeTypeLoader::SetTailAttribute().

void TypeLoader::SetTailMEP ( sparksee::gdb::MissingEndpoint mep )

protectedinherited

Sets the flag to create missing tail nodes when loading nodes or edges.

Parameters

flag	True if the nodes need to be created. False otherwise

Referenced by EdgeTypeLoader::EdgeTypeLoader(), and EdgeTypeLoader::SetTailMEP().

void TypeLoader::SetTailPosition ( sparksee::gdb::int32_t pos )

protectedinherited

Sets the position of the tail attribute in the source data.

This method is protected because only the Edge loaders should have it.

Parameters

pos	[in] Tail position

Referenced by EdgeTypeLoader::EdgeTypeLoader(), and EdgeTypeLoader::SetTailPosition().

void TypeLoader::SetTimestampFormat ( const std::wstring & timestampFormat )

inherited

Sets a specific timestamp format.

Parameters

timestampFormat [in] A string with the timestamp format definition.

void TypeLoader::SetType ( sparksee::gdb::type_t type )

inherited

Sets the type to be loaded.

Parameters

type	[in] Type identifier.

The documentation for this class was generated from the following file:

NodeTypeLoader.h

Public Member Functions

Protected Types

Protected Member Functions

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation