SBMLLevelVersionConverter Class Reference

Inheritance diagram for SBMLLevelVersionConverter:

Detailed Description

Whole-document SBML Level/Version converter.

This class of objects is defined by libSBML only and has no direct equivalent in terms of SBML components. It is a class used in the implementation of extra functionality provided by libSBML.

This SBML converter takes an SBML document having one SBML Level+Version combination, and attempts to convert it to an SBML document having a different Level+Version combination.

This class is also the basis for SBMLDocument::setLevelAndVersion().

Configuration and use of SBMLLevelVersionConverter

SBMLLevelVersionConverter is enabled by creating a ConversionProperties object with the option "setLevelAndVersion", and passing this properties object to SBMLDocument::convert(). The target SBML Level and Version combination are determined by the value of the SBML namespace set on the ConversionProperties object (using ConversionProperties::setTargetNamespaces(SBMLNamespaces *targetNS)).

In addition, this converter offers the following options:

• "strict": If this option has the value true, then the validity of the SBML document will be strictly preserved. This means that SBML validation will be performed, and if the original model is not valid or semantics cannot be preserved in the converted model, then conversion will not be performed. Conversely, if this option is set to false, model conversion will always be performed; if any errors are detected related to altered semantics, the errors will be logged in the usual way (i.e., the error log on the SBMLDocument object).

• "addDefaultUnits": By default, a conversion from SBML Level 2 to Level 3 will explicitly add UnitDefinition objects and unit attributes on the Model object to define units that are implicitly defined in SBML Level 2. This is usually desirable because in SBML Level 3, there are no default units and a conversion from Level 2 that did not add unit definitions would actually result in a loss of information. However, some users or software tools may not need or want this, or worse, may be fooled into thinking that libSBML has somehow inferred the proper units for model quantities. (It has not; it merely adds generic predefined units.) This option lets callers control this behavior.

General information about the use of SBML converters

The use of all the converters follows a similar approach. First, one creates a ConversionProperties object and calls ConversionProperties::addOption() on this object with one argument: a text string that identifies the desired converter. (The text string is specific to each converter; consult the documentation for a given converter to find out how it should be enabled.)

Next, for some converters, the caller can optionally set some converter-specific properties using additional calls to ConversionProperties::addOption(). Many converters provide the ability to configure their behavior to some extent; this is realized through the use of properties that offer different options. The default property values for each converter can be interrogated using the method SBMLConverter::getDefaultProperties() on the converter class in question .

Finally, the caller should invoke the method SBMLDocument::convert() with the ConversionProperties object as an argument.

Example of invoking an SBML converter

The following code fragment illustrates an example using SBMLReactionConverter, which is invoked using the option string "replaceReactions":

ConversionProperties props;
props.addOption("replaceReactions");

In the case of SBMLReactionConverter, there are no options to affect its behavior, so the next step is simply to invoke the converter on an SBMLDocument object. Continuing the example code:

// Assume that the variable "document" has been set to an SBMLDocument object.
int status = document->convert(props);
if (status != LIBSBML_OPERATION_SUCCESS)
{
  cerr << "Unable to perform conversion due to the following:" << endl;
  document->printErrors(cerr);
}

Here is an example of using a converter that offers an option. The following code invokes SBMLStripPackageConverter to remove the SBML Level 3 Layout package from a model. It sets the name of the package to be removed by adding a value for the option named "package" defined by that converter:

ConversionProperties props;
props.addOption("stripPackage");
props.addOption("package", "layout");
 
int status = document->convert(props);
if (status != LIBSBML_OPERATION_SUCCESS)
{
    cerr << "Unable to strip the Layout package from the model";
    cerr << "Error returned: " << status;
}

Available SBML converters in libSBML

LibSBML provides a number of built-in converters; by convention, their names end in Converter. The following are the built-in converters provided by libSBML 5.20.2 :

• AnnotationToDistribConverter
• ArraysFlatteningConverter
• CobraToFbcConverter
• CompFlatteningConverter
• DistribToAnnotationConverter
• FbcToCobraConverter
• FbcV1ToV2Converter
• FbcV2ToV1Converter
• RenderLayoutConverter
• SBMLFunctionDefinitionConverter
• SBMLIdConverter
• SBMLInferUnitsConverter
• SBMLInitialAssignmentConverter
• SBMLLevel1Version1Converter
• SBMLLevelVersionConverter
• SBMLLocalParameterConverter
• SBMLRateOfConverter
• SBMLRateRuleConverter
• SBMLReactionConverter
• SBMLRuleConverter
• SBMLStripPackageConverter
• SBMLUnitsConverter

Public Member Functions
virtual SBMLLevelVersionConverter *	clone () const
	Creates and returns a deep copy of this SBMLLevelVersionConverter object. More...
virtual int	convert ()
	Perform the conversion. More...
bool	getAddDefaultUnits ()
	Returns the flag indicating whether default units should be added when converting to L3 or not. More...
virtual ConversionProperties	getDefaultProperties () const
	Returns the default properties of this converter. More...
virtual SBMLDocument *	getDocument ()
	Returns the SBML document that is the subject of the conversions. More...
virtual const SBMLDocument *	getDocument () const
	Returns the SBML document that is the subject of the conversions. More...
const std::string &	getName () const
	Returns the name of this converter. More...
virtual ConversionProperties *	getProperties () const
	Returns the current properties in effect for this converter. More...
unsigned int	getTargetLevel ()
	Returns the target SBML Level for the conversion. More...
virtual SBMLNamespaces *	getTargetNamespaces ()
	Returns the target SBML namespaces of the currently set properties. More...
unsigned int	getTargetVersion ()
	Returns the target SBML Version for the conversion. More...
bool	getValidityFlag ()
	Returns the flag indicating whether the conversion has been set to "strict". More...
virtual bool	matchesProperties (const ConversionProperties &props) const
	Returns true if this converter object's properties match the given properties. More...
SBMLLevelVersionConverter &	operator= (const SBMLLevelVersionConverter &rhs)
	Assignment operator for SBMLLevelVersionConverter. More...
	SBMLLevelVersionConverter ()
	Creates a new SBMLLevelVersionConverter object. More...
	SBMLLevelVersionConverter (const SBMLLevelVersionConverter &obj)
	Copy constructor; creates a copy of an SBMLLevelVersionConverter object. More...
virtual int	setDocument (const SBMLDocument *doc)
	Sets the SBML document to be converted. More...
virtual int	setDocument (SBMLDocument *doc)
	Sets the SBML document to be converted. More...
virtual int	setProperties (const ConversionProperties *props)
	Sets the configuration properties to be used by this converter. More...
virtual	~SBMLLevelVersionConverter ()
	Destroys this object. More...

Constructor & Destructor Documentation

SBMLLevelVersionConverter() [1/2]

SBMLLevelVersionConverter::SBMLLevelVersionConverter

(

)

Creates a new SBMLLevelVersionConverter object.

SBMLLevelVersionConverter() [2/2]

SBMLLevelVersionConverter::SBMLLevelVersionConverter

(

const SBMLLevelVersionConverter &

obj

)

Copy constructor; creates a copy of an SBMLLevelVersionConverter object.

Parameters

obj	the SBMLLevelVersionConverter object to copy.

~SBMLLevelVersionConverter()

SBMLLevelVersionConverter::~SBMLLevelVersionConverter ( )

virtual

Destroys this object.

Member Function Documentation

clone()

SBMLLevelVersionConverter * SBMLLevelVersionConverter::clone ( ) const

virtual

Creates and returns a deep copy of this SBMLLevelVersionConverter object.

Returns

a (deep) copy of this converter.

Reimplemented from SBMLConverter.

convert()

int SBMLLevelVersionConverter::convert ( )

virtual

Perform the conversion.

This method causes the converter to do the actual conversion work, that is, to convert the SBMLDocument object set by SBMLConverter::setDocument() and with the configuration options set by SBMLConverter::setProperties().

Returns

integer value indicating success/failure of the function. The value is drawn from the enumeration OperationReturnValues_t. The possible values returned by this function are:

• LIBSBML_OPERATION_SUCCESS
• LIBSBML_OPERATION_FAILED
• LIBSBML_CONV_INVALID_TARGET_NAMESPACE
• LIBSBML_CONV_PKG_CONVERSION_NOT_AVAILABLE
• LIBSBML_CONV_INVALID_SRC_DOCUMENT

Reimplemented from SBMLConverter.

getAddDefaultUnits()

bool SBMLLevelVersionConverter::getAddDefaultUnits

(

)

Returns the flag indicating whether default units should be added when converting to L3 or not.

Returns

true if default units should be added, false otherwise.

getDefaultProperties()

ConversionProperties SBMLLevelVersionConverter::getDefaultProperties ( ) const

virtual

Returns the default properties of this converter.

A given converter exposes one or more properties that can be adjusted in order to influence the behavior of the converter. This method returns the default property settings for this converter. It is meant to be called in order to discover all the settings for the converter object.

Returns

the ConversionProperties object describing the default properties for this converter.

Reimplemented from SBMLConverter.

getDocument() [1/2]

SBMLDocument * SBMLConverter::getDocument ( )

virtualinherited

Returns the SBML document that is the subject of the conversions.

Returns

the current SBMLDocument object.

getDocument() [2/2]

const SBMLDocument * SBMLConverter::getDocument ( ) const

virtualinherited

Returns the SBML document that is the subject of the conversions.

Returns

the current SBMLDocument object.

getName()

const std::string & SBMLConverter::getName ( ) const

inherited

Returns the name of this converter.

Returns

a string, the name of this converter.

getProperties()

ConversionProperties * SBMLConverter::getProperties ( ) const

virtualinherited

Returns the current properties in effect for this converter.

A given converter exposes one or more properties that can be adjusted in order to influence the behavior of the converter. This method returns the current properties for this converter; in other words, the settings in effect at this moment. To change the property values, you can use SBMLConverter::setProperties(const ConversionProperties *props).

Returns

the currently set configuration properties.

See also

setProperties()

matchesProperties()

getTargetLevel()

unsigned int SBMLLevelVersionConverter::getTargetLevel

(

)

Returns the target SBML Level for the conversion.

Returns

an integer indicating the SBML Level.

getTargetNamespaces()

SBMLNamespaces * SBMLConverter::getTargetNamespaces ( )

virtualinherited

Returns the target SBML namespaces of the currently set properties.

SBML namespaces are used by libSBML to express the Level+Version of the SBML document (and, possibly, any SBML Level 3 packages in use). Some converters' behavior is affected by the SBML namespace configured in the converter. For example, in SBMLLevelVersionConverter (the converter for converting SBML documents from one Level+Version combination to another), the actions are fundamentally dependent on the SBML namespaces targeted.

Returns

the SBMLNamespaces object that describes the SBML namespaces in effect, or NULL if none are set.

getTargetVersion()

unsigned int SBMLLevelVersionConverter::getTargetVersion

(

)

Returns the target SBML Version for the conversion.

Returns

an integer indicating the Version within the SBML Level.

getValidityFlag()

bool SBMLLevelVersionConverter::getValidityFlag

(

)

Returns the flag indicating whether the conversion has been set to "strict".

Returns

true if strict validity has been requested, false otherwise.

matchesProperties()

bool SBMLLevelVersionConverter::matchesProperties ( const ConversionProperties &  props ) const

virtual

Returns true if this converter object's properties match the given properties.

A typical use of this method involves creating a ConversionProperties object, setting the options desired, and then calling this method on an SBMLLevelVersionConverter object to find out if the object's property values match the given ones. This method is also used by SBMLConverterRegistry::getConverterFor() to search across all registered converters for one matching particular properties.

Parameters

props

the properties to match.

Returns

true if this converter's properties match, false otherwise.

Reimplemented from SBMLConverter.

operator=()

SBMLLevelVersionConverter & SBMLLevelVersionConverter::operator=

(

const SBMLLevelVersionConverter &

rhs

)

Assignment operator for SBMLLevelVersionConverter.

Parameters

rhs	the object whose values are used as the basis of the assignment.

setDocument() [1/2]

int SBMLConverter::setDocument ( const SBMLDocument *  doc )

virtualinherited

Sets the SBML document to be converted.

Parameters

doc	the document to use for this conversion.

Returns

integer value indicating the success/failure of the operation. The value is drawn from the enumeration OperationReturnValues_t. The set of possible values that may be returned ultimately depends on the specific subclass of SBMLConverter being used, but the default method can return the following:

• LIBSBML_OPERATION_SUCCESS

Warning

Even though the argument doc is 'const', it is immediately cast to a non-const version, which is then usually changed by the converter upon a successful conversion. This variant of the setDocument() method is here solely to preserve backwards compatibility.

Reimplemented in SBMLReactionConverter, and SBMLRateOfConverter.

Examples

flattenModel.cpp.

setDocument() [2/2]

int SBMLConverter::setDocument ( SBMLDocument *  doc )

virtualinherited

Sets the SBML document to be converted.

Parameters

doc	the document to use for this conversion.

Returns

integer value indicating the success/failure of the operation. The value is drawn from the enumeration OperationReturnValues_t. The set of possible values that may be returned ultimately depends on the specific subclass of SBMLConverter being used, but the default method can return the following:

• LIBSBML_OPERATION_SUCCESS

Reimplemented in SBMLReactionConverter, and SBMLRateOfConverter.

setProperties()

int SBMLConverter::setProperties ( const ConversionProperties *  props )

virtualinherited

Sets the configuration properties to be used by this converter.

Parameters

props

the ConversionProperties object defining the properties to set.

Returns

integer value indicating the success/failure of the operation. The value is drawn from the enumeration OperationReturnValues_t. The set of possible values that may be returned ultimately depends on the specific subclass of SBMLConverter being used, but the default method can return the following values:

• LIBSBML_OPERATION_SUCCESS
• LIBSBML_OPERATION_FAILED

See also

getProperties()

matchesProperties()