chemaxon.fragmenter
Class ExhaustiveFragmenter

java.lang.Object
  chemaxon.fragmenter.Fragmenter
      chemaxon.fragmenter.ExhaustiveFragmenter

All Implemented Interfaces:

chemaxon.license.Licensable

public class ExhaustiveFragmenter
extends Fragmenter

Molecule fragmenter: exhaustive algorithm. Returns all possible fragment sets.

An example usage of the API:

 // create fragmenter with configuration file "fragment.xml"
 ExhaustiveFragmenter fragmenter = new ExhaustiveFragmenter(new File("fragment.xml"));

 // set parameters
 fragmenter.setDataInLabel(true);
 fragmenter.setAttachmentPointType(Fragmenter.ATTACH_AL_AR);

 // load the input molecule from "fragment.mol"
 MolImporter importer = new MolImporter("fragment.mol");
 Molecule mol = importer.read();
 importer.close();

 // fragment the input molecule, collect fragments in a list
 ArrayList fragments = new ArrayList();
 fragmenter.fragment(fragments, mol);

 // write the fragments in SDF format to "fragment.sdf"
 OutputStream os = new BufferedOutputStream(new FileOutputStream("fragment.sdf"));
 MolExporter exporter = new MolExporter(os, "sdf");
 for (Molecule fragment : fragments) {
     exporter.write(fragment);
 }
 exporter.close();
 

Since:

JChem 2.0

Author:

Nora Mate

Field Summary

Fields inherited from class chemaxon.fragmenter.Fragmenter

ATTACH_AL_AR, ATTACH_ANY_ATOM, ATTACH_NONE, cbs, classifier, fragmentsetsTag, licenseEnvironment, maxfragmentcount, reviser

Constructor Summary

ExhaustiveFragmenter(java.io.File file)
Constructor with reviser.

ExhaustiveFragmenter(java.io.InputStream is)
Constructor with reviser.

ExhaustiveFragmenter(RxnMolecule[] reactions, Standardizer standardizer)
Constructor with no reviser (accepts all cut-bonds).

ExhaustiveFragmenter(RxnMolecule[] reactions, Standardizer standardizer, CutBondReviser reviser)
Constructor.

ExhaustiveFragmenter(java.lang.String xmlstr)
Constructor with reviser.

Method Summary

void	create(java.util.List coll) Creates the molecule fragments by removing the previously found cut-bonds and fragmenting the input molecule.
protected void	find() Finds all possible cut-bond sets.
void	setExtensive(boolean extensive) Sets the 'extensive' property: true if extendable cut sets should be included.
void	setMaxSetCount(int maxsetcount) Sets the maximum number of fragment sets per molecule.
protected void	setTags(Molecule frag) Increases the fragment count tag, sets the fragment set tag.

Methods inherited from class chemaxon.fragmenter.Fragmenter

clearCutBond, clearCutBonds, collect, collect, find, fragment, getClassifier, getCutBond, getData, init, isCutBond, isLicensed, main, setAttachmentPointType, setCountTag, setCutBond, setCutBond, setDataInLabel, setFragmentSetsTag, setLicenseEnvironment, setMaxFragmentCount

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExhaustiveFragmenter

public ExhaustiveFragmenter(java.io.File file)
                     throws chemaxon.sss.search.SearchException

Constructor with reviser. Sets cleavage reactions from XML configuration.

Parameters:

file - is the configuration XML file

Throws:

chemaxon.sss.search.SearchException - if reaction check fails (e.g. inconsistent atom maps or multiple reactants)

ExhaustiveFragmenter

public ExhaustiveFragmenter(java.lang.String xmlstr)
                     throws chemaxon.sss.search.SearchException

Constructor with reviser. Sets cleavage reactions from XML configuration.

Parameters:

xmlstr - is the configuration XML string

Throws:

chemaxon.sss.search.SearchException - if reaction check fails (e.g. inconsistent atom maps or multiple reactants)

ExhaustiveFragmenter

public ExhaustiveFragmenter(java.io.InputStream is)
                     throws chemaxon.sss.search.SearchException

Constructor with reviser. Sets cleavage reactions from XML configuration.

Parameters:

is - is the configuration XML input stream

Throws:

chemaxon.sss.search.SearchException - if reaction check fails (e.g. inconsistent atom maps or multiple reactants)

ExhaustiveFragmenter

public ExhaustiveFragmenter(RxnMolecule[] reactions,
                            Standardizer standardizer)
                     throws chemaxon.sss.search.SearchException

Constructor with no reviser (accepts all cut-bonds). Sets the CutBondSearch objects according to the given reactions. Allocates arrays with default sizes.

Parameters:

reactions - is the reaction molecule array

standardizer - is the standardizer object

Throws:

chemaxon.sss.search.SearchException - if reaction check fails (e.g. inconsistent atom maps or multiple reactants)

ExhaustiveFragmenter

public ExhaustiveFragmenter(RxnMolecule[] reactions,
                            Standardizer standardizer,
                            CutBondReviser reviser)
                     throws chemaxon.sss.search.SearchException

Constructor. Sets the CutBondSearch objects according to the given reactions. Sets the CutBondReviser object. Allocates arrays with default sizes.

Parameters:

reactions - is the reaction molecule array

standardizer - is the standardizer object

reviser - is the cut-bond reviser object

Throws:

chemaxon.sss.search.SearchException - if reaction check fails (e.g. inconsistent atom maps or multiple reactants)

Method Detail

setMaxSetCount

public void setMaxSetCount(int maxsetcount)

Sets the maximum number of fragment sets per molecule.

Parameters:

maxsetcount - is the maximum number of fragment sets per molecule

setExtensive

public void setExtensive(boolean extensive)

Sets the 'extensive' property: true if extendable cut sets should be included. Default: false.

Parameters:

extensive - is true if extendable cut sets should be included

find

protected void find()
             throws chemaxon.sss.search.SearchException

Finds all possible cut-bond sets.

Specified by:

find in class Fragmenter

Throws:

chemaxon.sss.search.SearchException - on search error

create

public void create(java.util.List coll)

Creates the molecule fragments by removing the previously found cut-bonds and fragmenting the input molecule. Call Fragmenter.find(Molecule) beforehand to set the cut-bonds!

Overrides:

create in class Fragmenter

Parameters:

coll - is the list which the fragments will be added to

setTags

protected void setTags(Molecule frag)

Increases the fragment count tag, sets the fragment set tag.

Overrides:

setTags in class Fragmenter

Parameters:

frag - is the fragment