maintain a connection to an sql database More...

#include <vtkSQLDatabase.h>

Inheritance diagram for vtkSQLDatabase:

Collaboration diagram for vtkSQLDatabase:

Public Types
typedef vtkObject	Superclass

typedef vtkSQLDatabase (	CreateFunction) (const char *URL)
	Type for CreateFromURL callback.

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkSQLDatabase *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

virtual bool	Open (const char *password)=0
	Open a new connection to the database.

virtual void	Close ()=0
	Close the connection to the database.

virtual bool	IsOpen ()=0
	Return whether the database has an open connection.

virtual vtkSQLQuery *	GetQueryInstance ()=0
	Return an empty query on this database.

virtual bool	HasError ()=0
	Did the last operation generate an error.

virtual const char *	GetLastErrorText ()=0
	Get the last error text from the database I'm using const so that people do NOT use the standard vtkGetStringMacro in their implementation, because 99% of the time that will not be the correct thing to do...

virtual const char *	GetDatabaseType ()=0
	Get the type of the database (e.g.

virtual vtkStringArray *	GetTables ()=0
	Get the list of tables from the database.

virtual vtkStringArray *	GetRecord (const char *table)=0
	Get the list of fields for a particular table.

virtual bool	IsSupported (int vtkNotUsed(feature))
	Return whether a feature is supported by the database.

virtual vtkStdString	GetURL ()=0
	Get the URL of the database.

virtual vtkStdString	GetTablePreamble (bool)
	Return the SQL string with the syntax of the preamble following a "CREATE TABLE" SQL statement.

virtual vtkStdString	GetColumnSpecification (vtkSQLDatabaseSchema *schema, int tblHandle, int colHandle)
	Return the SQL string with the syntax to create a column inside a "CREATE TABLE" SQL statement.

virtual vtkStdString	GetIndexSpecification (vtkSQLDatabaseSchema *schema, int tblHandle, int idxHandle, bool &skipped)
	Return the SQL string with the syntax to create an index inside a "CREATE TABLE" SQL statement.

virtual vtkStdString	GetTriggerSpecification (vtkSQLDatabaseSchema *schema, int tblHandle, int trgHandle)
	Return the SQL string with the syntax to create a trigger using a "CREATE TRIGGER" SQL statement.

virtual bool	EffectSchema (vtkSQLDatabaseSchema *, bool dropIfExists=false)
	Effect a database schema.

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on.

virtual void	DebugOff ()
	Turn debugging output off.

bool	GetDebug ()
	Get the value of the debug flag.

void	SetDebug (bool debugFlag)
	Set the value of the debug flag.

virtual void	Modified ()
	Update the modification time for this object.

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time.

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

vtkTypeBool	HasObserver (unsigned long event)

vtkTypeBool	HasObserver (const char *event)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method.

int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not.

int	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not.

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string.

virtual vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class.

virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

virtual void	Delete ()
	Delete a VTK object.

virtual void	FastDelete ()
	Delete a reference to this object.

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream.

virtual void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object).

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object).

int	GetReferenceCount ()
	Return the current reference count of this object.

void	SetReferenceCount (int)
	Sets the reference count.

bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space.

virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

Static Public Member Functions
static vtkTypeBool	IsTypeOf (const char *type)

static vtkSQLDatabase *	SafeDownCast (vtkObjectBase *o)

static vtkSQLDatabase *	CreateFromURL (const char *URL)
	Create a the proper subclass given a URL.

static vtkInformationObjectBaseKey *	DATABASE ()
	Stores the database class pointer as an information key.


static void	RegisterCreateFromURLCallback (CreateFunction callback)
	Provides mechanism to register/unregister additional callbacks to create concrete subclasses of vtkSQLDatabase to handle different protocols.

static void	UnRegisterCreateFromURLCallback (CreateFunction callback)
	Provides mechanism to register/unregister additional callbacks to create concrete subclasses of vtkSQLDatabase to handle different protocols.

static void	UnRegisterAllCreateFromURLCallbacks ()
	Provides mechanism to register/unregister additional callbacks to create concrete subclasses of vtkSQLDatabase to handle different protocols.

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes.

static void	SetGlobalWarningDisplay (int val)
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static int	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class.

static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within.

static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space.

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkSQLDatabase ()

	~vtkSQLDatabase () override

virtual bool	ParseURL (const char *url)=0
	Subclasses should override this method to determine connection parameters given the URL.

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events.

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events.

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Additional Inherited Members
Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

maintain a connection to an sql database

Abstract base class for all SQL database connection classes. Manages a connection to the database, and is responsible for creating instances of the associated vtkSQLQuery objects associated with this class in order to perform execute queries on the database. To allow connections to a new type of database, create both a subclass of this class and vtkSQLQuery, and implement the required functions:

Open() - open the database connection, if possible. Close() - close the connection. GetQueryInstance() - create and return an instance of the vtkSQLQuery subclass associated with the database type.

The subclass should also provide API to set connection parameters.

This class also provides the function EffectSchema to transform a database schema into a SQL database.

Thanks:: Thanks to Andrew Wilson from Sandia National Laboratories for his work on the database classes and for the SQLite example. Thanks to David Thompson and Philippe Pebay from Sandia National Laboratories for implementing this class.

See also: vtkSQLQuery vtkSQLDatabaseSchema

Definition at line 84 of file vtkSQLDatabase.h.

Member Typedef Documentation

◆ Superclass

typedef vtkObject vtkSQLDatabase::Superclass

Definition at line 87 of file vtkSQLDatabase.h.

◆ CreateFunction

typedef vtkSQLDatabase *(* vtkSQLDatabase::CreateFunction) (const char *URL)

Type for CreateFromURL callback.

Definition at line 221 of file vtkSQLDatabase.h.

Constructor & Destructor Documentation

◆ vtkSQLDatabase()

vtkSQLDatabase::vtkSQLDatabase ( )

protected

◆ ~vtkSQLDatabase()

vtkSQLDatabase::~vtkSQLDatabase ( )

overrideprotected

Member Function Documentation

◆ IsTypeOf()

static vtkTypeBool vtkSQLDatabase::IsTypeOf ( const char * type )

static

◆ IsA()

virtual vtkTypeBool vtkSQLDatabase::IsA ( const char * name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class.

Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObjectBase.

Reimplemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ SafeDownCast()

static vtkSQLDatabase * vtkSQLDatabase::SafeDownCast ( vtkObjectBase * o )

static

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkSQLDatabase::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ NewInstance()

vtkSQLDatabase * vtkSQLDatabase::NewInstance ( ) const

◆ PrintSelf()

void vtkSQLDatabase::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

overridevirtual

Methods invoked by print to print information about the object including superclasses.

Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkObject.

Reimplemented in vtkSQLiteDatabase.

◆ Open()

virtual bool vtkSQLDatabase::Open ( const char * password )

pure virtual

Open a new connection to the database.

You need to set up any database parameters before calling this function. For database connections that do not require a password, pass an empty string. Returns true is the database was opened successfully, and false otherwise.

Implemented in vtkQtSQLDatabase, vtkODBCDatabase, vtkSQLiteDatabase, vtkMySQLDatabase, and vtkPostgreSQLDatabase.

◆ Close()

virtual void vtkSQLDatabase::Close ( )

pure virtual

Close the connection to the database.

Implemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ IsOpen()

virtual bool vtkSQLDatabase::IsOpen ( )

pure virtual

Return whether the database has an open connection.

Implemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ GetQueryInstance()

virtual vtkSQLQuery * vtkSQLDatabase::GetQueryInstance ( )

pure virtual

Return an empty query on this database.

Implemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ HasError()

virtual bool vtkSQLDatabase::HasError ( )

pure virtual

Did the last operation generate an error.

Implemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ GetLastErrorText()

virtual const char * vtkSQLDatabase::GetLastErrorText ( )

pure virtual

Get the last error text from the database I'm using const so that people do NOT use the standard vtkGetStringMacro in their implementation, because 99% of the time that will not be the correct thing to do...

Implemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ GetDatabaseType()

virtual const char * vtkSQLDatabase::GetDatabaseType ( )

pure virtual

Get the type of the database (e.g.

mysql, psql,..).

Implemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ GetTables()

virtual vtkStringArray * vtkSQLDatabase::GetTables ( )

pure virtual

Get the list of tables from the database.

Implemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ GetRecord()

virtual vtkStringArray * vtkSQLDatabase::GetRecord ( const char * table )

pure virtual

Get the list of fields for a particular table.

Implemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ IsSupported()

virtual bool vtkSQLDatabase::IsSupported ( int vtkNotUsedfeature )

inlinevirtual

Return whether a feature is supported by the database.

Definition at line 145 of file vtkSQLDatabase.h.

◆ GetURL()

virtual vtkStdString vtkSQLDatabase::GetURL ( )

pure virtual

Get the URL of the database.

Implemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ GetTablePreamble()

virtual vtkStdString vtkSQLDatabase::GetTablePreamble ( bool )

inlinevirtual

Return the SQL string with the syntax of the preamble following a "CREATE TABLE" SQL statement.

NB: by default, this method returns an empty string. It must be overwritten for those SQL backends which allow such preambles such as, e.g., MySQL.

Reimplemented in vtkMySQLDatabase.

Definition at line 159 of file vtkSQLDatabase.h.

◆ GetColumnSpecification()

virtual vtkStdString vtkSQLDatabase::GetColumnSpecification	(	vtkSQLDatabaseSchema *	schema,
		int	tblHandle,
		int	colHandle
	)

virtual

Return the SQL string with the syntax to create a column inside a "CREATE TABLE" SQL statement.

NB: this method implements the following minimally-portable syntax:

It must be overwritten for those SQL backends which have a different syntax such as, e.g., MySQL.

Reimplemented in vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

◆ GetIndexSpecification()

virtual vtkStdString vtkSQLDatabase::GetIndexSpecification	(	vtkSQLDatabaseSchema *	schema,
		int	tblHandle,
		int	idxHandle,
		bool &	skipped
	)

virtual

Return the SQL string with the syntax to create an index inside a "CREATE TABLE" SQL statement.

NB1: this method implements the following minimally-portable syntax:

<index type> [<index name>] (<column name 1>,... )

It must be overwritten for those SQL backends which have a different syntax such as, e.g., MySQL. NB2: this method does not assume that INDEX creation is supported within a CREATE TABLE statement. Therefore, should such an INDEX arise in the schema, a CREATE INDEX statement is returned and skipped is set to true. Otherwise, skipped will always be returned false.

Reimplemented in vtkMySQLDatabase, and vtkODBCDatabase.

◆ GetTriggerSpecification()

virtual vtkStdString vtkSQLDatabase::GetTriggerSpecification	(	vtkSQLDatabaseSchema *	schema,
		int	tblHandle,
		int	trgHandle
	)

virtual

Return the SQL string with the syntax to create a trigger using a "CREATE TRIGGER" SQL statement.

NB1: support is contingent on VTK_FEATURE_TRIGGERS being recognized as a supported feature. Not all backends (e.g., SQLite) support it. NB2: this method implements the following minimally-portable syntax:

<trigger name> {BEFORE | AFTER} <event> ON <table name> FOR EACH ROW <trigger action>

It must be overwritten for those SQL backends which have a different syntax such as, e.g., PostgreSQL.

◆ CreateFromURL()

static vtkSQLDatabase * vtkSQLDatabase::CreateFromURL ( const char * URL )

static

Create a the proper subclass given a URL.

The URL format for SQL databases is a true URL of the form: 'protocol://'[[username[':'password]'@']hostname[':'port]]'/'[dbname] .

◆ EffectSchema()

virtual bool vtkSQLDatabase::EffectSchema	(	vtkSQLDatabaseSchema *	,
		bool	dropIfExists = `false`
	)

virtual

Effect a database schema.

◆ RegisterCreateFromURLCallback()

static void vtkSQLDatabase::RegisterCreateFromURLCallback ( CreateFunction callback )

static

Provides mechanism to register/unregister additional callbacks to create concrete subclasses of vtkSQLDatabase to handle different protocols.

The registered callbacks are tried in the order they are registered.

◆ UnRegisterCreateFromURLCallback()

static void vtkSQLDatabase::UnRegisterCreateFromURLCallback ( CreateFunction callback )

static

Provides mechanism to register/unregister additional callbacks to create concrete subclasses of vtkSQLDatabase to handle different protocols.

The registered callbacks are tried in the order they are registered.

◆ UnRegisterAllCreateFromURLCallbacks()

static void vtkSQLDatabase::UnRegisterAllCreateFromURLCallbacks ( )

static

Provides mechanism to register/unregister additional callbacks to create concrete subclasses of vtkSQLDatabase to handle different protocols.

The registered callbacks are tried in the order they are registered.

◆ DATABASE()

static vtkInformationObjectBaseKey * vtkSQLDatabase::DATABASE ( )

static

Stores the database class pointer as an information key.

This is currently used to store database pointers as part of 'data on demand' data objects. For example: The application may have a table/tree/whatever of documents, the data structure is storing the meta-data but not the full text. Further down the pipeline algorithms or views may want to retrieve additional information (full text)for specific documents.

◆ ParseURL()

virtual bool vtkSQLDatabase::ParseURL ( const char * url )

protectedpure virtual

Subclasses should override this method to determine connection parameters given the URL.

This is called by CreateFromURL() to initialize the instance. Look at CreateFromURL() for details about the URL format.

Implemented in vtkQtSQLDatabase, vtkMySQLDatabase, vtkODBCDatabase, vtkPostgreSQLDatabase, and vtkSQLiteDatabase.

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

IO/SQL/vtkSQLDatabase.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Superclass

◆ CreateFunction

Constructor & Destructor Documentation

◆ vtkSQLDatabase()

◆ ~vtkSQLDatabase()

Member Function Documentation

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ Open()

◆ Close()

◆ IsOpen()

◆ GetQueryInstance()

◆ HasError()

◆ GetLastErrorText()

◆ GetDatabaseType()

◆ GetTables()

◆ GetRecord()

◆ IsSupported()

◆ GetURL()

◆ GetTablePreamble()

◆ GetColumnSpecification()

◆ GetIndexSpecification()

◆ GetTriggerSpecification()

◆ CreateFromURL()

◆ EffectSchema()

◆ RegisterCreateFromURLCallback()

◆ UnRegisterCreateFromURLCallback()

◆ UnRegisterAllCreateFromURLCallbacks()

◆ DATABASE()

◆ ParseURL()