public class SBMLRuleConverter extends SBMLConverter
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 converter reorders assignments in a model. Specifically, it sorts
the list of assignment rules (i.e., the AssignmentRule
objects contained
in the ListOfAssignmentRules within the Model
object) and the initial
assignments (i.e., the InitialAssignment
objects contained in the
ListOfInitialAssignments
) such that, within each set, assignments that
depend on prior values are placed after the values are set. For
example, if there is an assignment rule stating a = b + 1, and
another rule stating b = 3, the list of rules is sorted and the
rules are arranged so that the rule for b = 3 appears before
the rule for a = b + 1. Similarly, if dependencies of this
sort exist in the list of initial assignments in the model, the initial
assignments are sorted as well.
Beginning with SBML Level 2, assignment rules have no ordering required&mdashthe order in which the rules appear in an SBML file has no significance. Software tools, however, may need to reorder assignments for purposes of evaluating them. For example, for simulators that use time integration methods, it would be a good idea to reorder assignment rules such as the following,
b = a + 10 seconds
a = time
so that the evaluation of the rules is independent of integrator
step sizes. (This is due to the fact that, in this case, the order in
which the rules are evaluated changes the result.) SBMLRuleConverter
can be used to reorder the SBML objects regardless of whether the
input file contained them in the desired order.
Note that the two sets of SBML assignments (list of assignment rules on the one hand, and list of initial assignments on the other hand) are handled independently. In an SBML model, these entities are treated differently and no amount of sorting can deal with inter-dependencies between assignments of the two kinds.
SBMLRuleConverter
SBMLRuleConverter
is enabled by creating a ConversionProperties
object
with the option 'sortRules'
, and passing this properties object to
SBMLDocument.convert(ConversionProperties)
. This
converter offers no other options.
The use of all the converters follows a similar approach. First, one
creates a ConversionProperties
object and calls
ConversionProperties.addOption(ConversionOption)
on this object with one arguments: 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(ConversionOption)
.
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(ConversionProperties)
with the ConversionProperties
object as an argument.
The following code fragment illustrates an example using
SBMLReactionConverter
, which is invoked using the option string
'replaceReactions':
ConversionProperties
props = newConversionProperties
() if (props != null) { props.addOption('replaceReactions') } else { // Deal with error. }
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.
status = document.convert(config)
if (status != libsbml.LIBSBML_OPERATION_SUCCESS)
{
// Handle error somehow.
System.out.println('Error: conversion failed due to the following:')
document.printErrors()
}
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
config = newConversionProperties
() if (config != None) { config.addOption('stripPackage') config.addOption('package', 'layout') status = document.convert(config) if (status != LIBSBML_OPERATION_SUCCESS) { // Handle error somehow. System.out.println('Error: unable to strip theLayout
package') document.printErrors() } } else { // Handle error somehow. System.out.println('Error: unable to createConversionProperties
object') }
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 5.12.0 :
CobraToFbcConverter
CompFlatteningConverter
FbcToCobraConverter
FbcV1ToV2Converter
FbcV2ToV1Converter
SBMLFunctionDefinitionConverter
SBMLIdConverter
SBMLInferUnitsConverter
SBMLInitialAssignmentConverter
SBMLLevel1Version1Converter
SBMLLevelVersionConverter
SBMLLocalParameterConverter
SBMLReactionConverter
SBMLRuleConverter
SBMLStripPackageConverter
SBMLUnitsConverter
Constructor and Description |
---|
SBMLRuleConverter()
Creates a new
SBMLLevelVersionConverter object. |
SBMLRuleConverter(SBMLRuleConverter obj)
Copy constructor creates a copy of an
SBMLLevelVersionConverter
object. |
Modifier and Type | Method and Description |
---|---|
SBMLConverter |
cloneObject()
Creates and returns a deep copy of this
SBMLLevelVersionConverter
object. |
int |
convert()
Perform the conversion.
|
void |
delete()
Explicitly deletes the underlying native object.
|
ConversionProperties |
getDefaultProperties()
Returns the default properties of this converter.
|
boolean |
matchesProperties(ConversionProperties props)
Returns
true if this converter object's properties match the given
properties. |
getDocument, getName, getProperties, getTargetNamespaces, setDocument, setProperties
public SBMLRuleConverter()
SBMLLevelVersionConverter
object.public SBMLRuleConverter(SBMLRuleConverter obj)
SBMLLevelVersionConverter
object.
obj
- the SBMLLevelVersionConverter
object to copy.public void delete()
In general, application software will not need to call this method directly. The Java language binding for libSBML is implemented as a language wrapper that provides a Java interface to libSBML's underlying C++/C code. Some of the Java methods return objects that are linked to objects created not by Java code, but by C++ code. The Java objects wrapped around them will be deleted when the garbage collector invokes the corresponding C++ finalize()
methods for the objects. The finalize()
methods in turn call the SBMLRuleConverter.delete()
method on the libSBML object.
This method is exposed in case calling programs want to ensure that the underlying object is freed immediately, and not at some arbitrary time determined by the Java garbage collector. In normal usage, callers do not need to invoke SBMLRuleConverter.delete()
themselves.
delete
 in class SBMLConverter
public SBMLConverter cloneObject()
SBMLLevelVersionConverter
object.
cloneObject
 in class SBMLConverter
public boolean matchesProperties(ConversionProperties props)
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(ConversionProperties)
to search across all registered converters for one matching particular
properties.
matchesProperties
 in class SBMLConverter
props
- the properties to match.
true
if this converter's properties match, false
otherwise.public int convert()
This method causes the converter to do the actual conversion work,
that is, to convert the SBMLDocument
object set by
SBMLConverter.setDocument(SBMLDocument)
and
with the configuration options set by
SBMLConverter.setProperties(ConversionProperties)
.
convert
 in class SBMLConverter
public ConversionProperties getDefaultProperties()
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.
getDefaultProperties
 in class SBMLConverter
ConversionProperties
object describing the default properties
for this converter.SBMLConverter.setProperties(ConversionProperties)
,
SBMLConverter.matchesProperties(ConversionProperties)