Examples with Kinetics cbit.vcell.model.Kinetics used on opensource projects

Example 11 with Kinetics

use of cbit.vcell.model.Kinetics in project vcell by virtualcell.

the class XmlHelper method applyOverridesForSBML.

/**
 * applyOverrides: private method to apply overrides from the simulation in 'simJob' to simContext, if any.
 * 				Start off by cloning biomodel, since all the references are required in cloned simContext and is
 * 				best retained by cloning biomodel.
 * @param bm - biomodel to be cloned
 * @param sc - simulationContext to be cloned and overridden using math overrides in simulation
 * @param simJob - simulationJob from where simulation with overrides is obtained.
 * @return
 */
public static SimulationContext applyOverridesForSBML(BioModel bm, SimulationContext sc, SimulationJob simJob) {
    SimulationContext overriddenSimContext = sc;
    if (simJob != null) {
        Simulation sim = simJob.getSimulation();
        // need to clone Biomodel, simContext, etc. only if simulation has override(s)
        try {
            if (sim != null && sim.getMathOverrides().hasOverrides()) {
                // BioModel clonedBM = (BioModel)BeanUtils.cloneSerializable(bm);
                BioModel clonedBM = XMLToBioModel(new XMLSource(bioModelToXML(bm)));
                clonedBM.refreshDependencies();
                // get the simContext in cloned Biomodel that corresponds to 'sc'
                SimulationContext[] simContexts = clonedBM.getSimulationContexts();
                for (int i = 0; i < simContexts.length; i++) {
                    if (simContexts[i].getName().equals(sc.getName())) {
                        overriddenSimContext = simContexts[i];
                        break;
                    }
                }
                // 
                overriddenSimContext.getModel().refreshDependencies();
                overriddenSimContext.refreshDependencies();
                MathMapping mathMapping = overriddenSimContext.createNewMathMapping();
                MathSymbolMapping msm = mathMapping.getMathSymbolMapping();
                MathOverrides mathOverrides = sim.getMathOverrides();
                String[] moConstNames = mathOverrides.getOverridenConstantNames();
                for (int i = 0; i < moConstNames.length; i++) {
                    cbit.vcell.math.Constant overriddenConstant = mathOverrides.getConstant(moConstNames[i]);
                    // Expression overriddenExpr = mathOverrides.getActualExpression(moConstNames[i], 0);
                    Expression overriddenExpr = mathOverrides.getActualExpression(moConstNames[i], simJob.getJobIndex());
                    // The above constant (from mathoverride) is not the same instance as the one in the MathSymbolMapping hash.
                    // Hence retreive the correct instance from mathSymbolMapping (mathMapping -> mathDescription) and use it to
                    // retrieve its value (symbolTableEntry) from hash.
                    cbit.vcell.math.Variable overriddenVar = msm.findVariableByName(overriddenConstant.getName());
                    cbit.vcell.parser.SymbolTableEntry[] stes = msm.getBiologicalSymbol(overriddenVar);
                    if (stes == null) {
                        throw new NullPointerException("No matching biological symbol for : " + overriddenConstant.getName());
                    }
                    if (stes.length > 1) {
                        throw new RuntimeException("Cannot have more than one mapping entry for constant : " + overriddenConstant.getName());
                    }
                    if (stes[0] instanceof Parameter) {
                        Parameter param = (Parameter) stes[0];
                        if (param.isExpressionEditable()) {
                            if (param instanceof Kinetics.KineticsParameter) {
                                // Kinetics param has to be set separately for the integrity of the kinetics object
                                Kinetics.KineticsParameter kinParam = (Kinetics.KineticsParameter) param;
                                ReactionStep[] rs = overriddenSimContext.getModel().getReactionSteps();
                                for (int j = 0; j < rs.length; j++) {
                                    if (rs[j].getNameScope().getName().equals(kinParam.getNameScope().getName())) {
                                        rs[j].getKinetics().setParameterValue(kinParam, overriddenExpr);
                                    }
                                }
                            } else if (param instanceof cbit.vcell.model.ExpressionContainer) {
                                // If it is any other editable param, set its expression with the
                                ((cbit.vcell.model.ExpressionContainer) param).setExpression(overriddenExpr);
                            }
                        }
                    }
                // end - if (stes[0] is Parameter)
                }
            // end  - for moConstNames
            }
        // end if (sim has MathOverrides)
        } catch (Exception e) {
            e.printStackTrace(System.out);
            throw new RuntimeException("Could not apply overrides from simulation to application parameters : " + e.getMessage());
        }
    }
    // end if (simJob != null)
    return overriddenSimContext;
}

Example 12 with Kinetics

use of cbit.vcell.model.Kinetics in project vcell by virtualcell.

the class ReactionPropertiesPanel method getJToggleButton.

private JButton getJToggleButton() {
    if (jToggleButton == null) {
        jToggleButton = new JButton("Convert");
        jToggleButton.addActionListener(new java.awt.event.ActionListener() {

            public void actionPerformed(java.awt.event.ActionEvent e) {
                ModelUnitSystem modelUnitSystem = reactionStep.getModel().getUnitSystem();
                Kinetics kinetics = reactionStep.getKinetics();
                if (kinetics instanceof DistributedKinetics) {
                    try {
                        reactionStep.setKinetics(LumpedKinetics.toLumpedKinetics((DistributedKinetics) kinetics));
                    } catch (Exception e2) {
                        e2.printStackTrace(System.out);
                        if (kinetics.getKineticsDescription().isElectrical()) {
                            DialogUtils.showErrorDialog(ReactionPropertiesPanel.this, "failed to translate into General Current Kinetics [" + modelUnitSystem.getCurrentUnit().getSymbolUnicode() + "]: " + e2.getMessage(), e2);
                        } else {
                            DialogUtils.showErrorDialog(ReactionPropertiesPanel.this, "failed to translate into General Lumped Kinetics [" + modelUnitSystem.getLumpedReactionRateUnit().getSymbolUnicode() + "]: " + e2.getMessage(), e2);
                        }
                    }
                } else if (kinetics instanceof LumpedKinetics) {
                    try {
                        reactionStep.setKinetics(DistributedKinetics.toDistributedKinetics((LumpedKinetics) kinetics));
                    } catch (Exception e2) {
                        e2.printStackTrace(System.out);
                        if (kinetics.getKineticsDescription().isElectrical()) {
                            DialogUtils.showErrorDialog(ReactionPropertiesPanel.this, "failed to translate into General Current Density Kinetics [" + modelUnitSystem.getCurrentDensityUnit().getSymbolUnicode() + "]: " + e2.getMessage(), e2);
                        } else {
                            if (kinetics.getReactionStep().getStructure() instanceof Feature) {
                                DialogUtils.showErrorDialog(ReactionPropertiesPanel.this, "failed to translate into General Kinetics [" + modelUnitSystem.getVolumeReactionRateUnit().getSymbolUnicode() + "]: " + e2.getMessage(), e2);
                            } else {
                                DialogUtils.showErrorDialog(ReactionPropertiesPanel.this, "failed to translate into General Kinetics [" + modelUnitSystem.getMembraneReactionRateUnit().getSymbolUnicode() + "]: " + e2.getMessage(), e2);
                            }
                        }
                    }
                }
            }
        });
    }
    return jToggleButton;
}

Example 13 with Kinetics

use of cbit.vcell.model.Kinetics in project vcell by virtualcell.

the class VCellCopyPasteHelper method chooseApplyPaste.

/**
 * Insert the method's description here.
 * Creation date: (7/10/2006 11:05:19 AM)
 */
public static void chooseApplyPaste(Component requester, String[] pasteDetails, Parameter[] changingParamters, Expression[] newParameterExpression) {
    if (pasteDetails.length != changingParamters.length || changingParamters.length != newParameterExpression.length) {
        throw new IllegalArgumentException(VCellCopyPasteHelper.class.getName() + ".chooseApplyPaste(...) arguments must have unequal lengths");
    }
    // Only present things that will actually change
    boolean bAtLeatOneDifferent = false;
    boolean[] bEnableDisplay = new boolean[changingParamters.length];
    for (int i = 0; i < changingParamters.length; i += 1) {
        // bEnableDisplay[i] = !changingParamters[i].getExpression().equals(newParameterExpression[i]);
        bEnableDisplay[i] = !Compare.isEqualOrNull(changingParamters[i].getExpression(), newParameterExpression[i]);
        bAtLeatOneDifferent = bAtLeatOneDifferent || bEnableDisplay[i];
    }
    if (!bAtLeatOneDifferent) {
        PopupGenerator.showInfoDialog(requester, "All valid paste values are equal to the destination values.\nNo paste needed.");
        return;
    }
    boolean[] bChoices = showChoices(requester, pasteDetails, bEnableDisplay);
    if (bChoices != null) {
        StringBuffer statusMessages = new StringBuffer();
        boolean bFailure = false;
        for (int i = 0; i < changingParamters.length; i += 1) {
            try {
                if (bChoices[i]) {
                    if (changingParamters[i] instanceof Kinetics.KineticsParameter) {
                        Kinetics kinetics = ((ReactionStep) changingParamters[i].getNameScope().getScopedSymbolTable()).getKinetics();
                        kinetics.setParameterValue((Kinetics.KineticsParameter) changingParamters[i], newParameterExpression[i]);
                    } else {
                        throw new Exception("Changing " + changingParamters[i].getNameScope().getName() + " " + changingParamters[i].getName() + " not yet implemented");
                    }
                }
                statusMessages.append("(OK) " + pasteDetails + "\n");
            } catch (Exception e) {
                bFailure = true;
                statusMessages.append("(Failed) " + pasteDetails + " " + e.getMessage() + " " + e.getClass().getName() + "\n");
            }
        }
        if (bFailure) {
            PopupGenerator.showErrorDialog(requester, "Paste Results:\n" + statusMessages.toString());
        }
    }
}

Example 14 with Kinetics

use of cbit.vcell.model.Kinetics in project vcell by virtualcell.

the class BNGWindowManager method importSbml.

/**
 * Comment
 */
public void importSbml(String bngSbmlStr) {
    if (bngSbmlStr == null || bngSbmlStr.length() == 0) {
        throw new RuntimeException("SBMl string is empty, cannot import into VCell.");
    }
    // 
    // 1. Convert SBML string from BNG to SBML model, add unitDefintions to SBML model using VCell sbml compatible unit system
    // 2. Import unit modified SBML model into VCell as biomodel
    // 3. Enforce "cleaner" (looking) units on this imported biomodel (can use the units added to the sbml model above)
    // 4. Convert all LumpedKinetics reactions into DistributedKinetics.
    // 4. Convert this biomodel into vcml string and pass it into XMLInfo and then to RequestManager to open document.
    // 
    ModelUnitSystem mus = ModelUnitSystem.createDefaultVCModelUnitSystem();
    ModelUnitSystem sbmlCompatibleVCModelUnitSystem = ModelUnitSystem.createSBMLUnitSystem(mus.getVolumeSubstanceUnit(), mus.getVolumeUnit(), mus.getAreaUnit(), mus.getLengthUnit(), mus.getTimeUnit());
    // display to user to change units if desired.
    UnitSystemSelectionPanel unitSystemSelectionPanel = new UnitSystemSelectionPanel(true);
    unitSystemSelectionPanel.initialize(sbmlCompatibleVCModelUnitSystem);
    int retcode = DialogUtils.showComponentOKCancelDialog(getBngOutputPanel(), unitSystemSelectionPanel, "Select new unit system to import into VCell");
    ModelUnitSystem forcedModelUnitSystem = null;
    while (retcode == JOptionPane.OK_OPTION) {
        try {
            forcedModelUnitSystem = unitSystemSelectionPanel.createModelUnitSystem();
            break;
        } catch (Exception e) {
            e.printStackTrace(System.out);
            DialogUtils.showErrorDialog(getBngOutputPanel(), e.getMessage(), e);
            retcode = DialogUtils.showComponentOKCancelDialog(getBngOutputPanel(), unitSystemSelectionPanel, "Select new unit system to import into VCell");
        }
    }
    if (forcedModelUnitSystem == null) {
        DialogUtils.showErrorDialog(getBngOutputPanel(), "Units are required for import into Virtual Cell.");
    }
    try {
        // SBMLUnitTranslator.addUnitDefinitionsToSbmlModel(bngSbmlStr, forcedModelUnitSystem);
        String modifiedSbmlStr = bngSbmlStr;
        // Create a default VCLogger - SBMLImporter needs it
        cbit.util.xml.VCLogger logger = new cbit.util.xml.VCLogger() {

            @Override
            public void sendMessage(Priority p, ErrorType et, String message) throws Exception {
                System.err.println("LOGGER: msgLevel=" + p + ", msgType=" + et + ", " + message);
                if (p == VCLogger.Priority.HighPriority) {
                    throw new RuntimeException("Import failed : " + message);
                }
            }

            public void sendAllMessages() {
            }

            public boolean hasMessages() {
                return false;
            }
        };
        // import sbml String into VCell biomodel
        File sbmlFile = File.createTempFile("temp", ".xml");
        sbmlFile.deleteOnExit();
        XmlUtil.writeXMLStringToFile(modifiedSbmlStr, sbmlFile.getAbsolutePath(), true);
        org.vcell.sbml.vcell.SBMLImporter sbmlImporter = new SBMLImporter(sbmlFile.getAbsolutePath(), logger, false);
        BioModel bioModel = sbmlImporter.getBioModel();
        // enforce 'cleaner looking' units on vc biomodel (the process of adding unit defintion to sbml model messes up the units, though they are correct units (eg., 1e-6m for um).
        BioModel modifiedBiomodel = ModelUnitConverter.createBioModelWithNewUnitSystem(bioModel, forcedModelUnitSystem);
        // convert any reaction that has GeneralLumpedKinetics to GeneralKinetics
        for (ReactionStep rs : modifiedBiomodel.getModel().getReactionSteps()) {
            Kinetics kinetics = rs.getKinetics();
            if (kinetics instanceof LumpedKinetics) {
                rs.setKinetics(DistributedKinetics.toDistributedKinetics((LumpedKinetics) kinetics));
            }
        }
        // convert biomodel to vcml string
        String vcmlString = XmlHelper.bioModelToXML(modifiedBiomodel);
        ExternalDocInfo externalDocInfo = new ExternalDocInfo(vcmlString);
        if (externalDocInfo != null) {
            getRequestManager().openDocument(externalDocInfo, this, true);
        }
    } catch (Exception e) {
        e.printStackTrace(System.out);
        throw new RuntimeException("Cound not convert BNG sbml string to VCell biomodel : ", e);
    }
}

Example 15 with Kinetics

use of cbit.vcell.model.Kinetics in project vcell by virtualcell.

the class BioCartoonTool method pasteReactionSteps0.

/**
 * pasteReactionSteps0 : does the actual pasting. First called with a cloned model, to track issues. If user still wants to proceed, the paste
 * is performed on the original model.
 *
 * Insert the method's description here.
 * Creation date: (5/10/2003 3:55:25 PM)
 * @param pasteToModel cbit.vcell.model.Model
 * @param pasteToStructure cbit.vcell.model.Structure
 * @param bNew boolean
 */
private static final PasteHelper pasteReactionSteps0(HashMap<String, HashMap<ReactionParticipant, Structure>> rxPartMapStructure, Component parent, IssueContext issueContext, ReactionStep[] copyFromRxSteps, Model pasteToModel, Structure pasteToStructure, boolean bNew, /*boolean bUseDBSpecies,*/
UserResolvedRxElements userResolvedRxElements) throws Exception {
    HashMap<BioModelEntityObject, BioModelEntityObject> reactionsAndSpeciesContexts = new HashMap<>();
    if (copyFromRxSteps == null || copyFromRxSteps.length == 0 || pasteToModel == null || pasteToStructure == null) {
        throw new IllegalArgumentException("CartoonTool.pasteReactionSteps Error " + (copyFromRxSteps == null || copyFromRxSteps.length == 0 ? "reactionStepsArr empty " : "") + (pasteToModel == null ? "model is null " : "") + (pasteToStructure == null ? "struct is null " : ""));
    }
    if (!pasteToModel.contains(pasteToStructure)) {
        throw new IllegalArgumentException("CartoonTool.pasteReactionSteps model " + pasteToModel.getName() + " does not contain structure " + pasteToStructure.getName());
    }
    // Check PasteToModel has preferred targets if set
    if (userResolvedRxElements != null) {
        for (int i = 0; i < userResolvedRxElements.toSpeciesArr.length; i++) {
            if (userResolvedRxElements.toSpeciesArr[i] != null) {
                if (!pasteToModel.contains(userResolvedRxElements.toSpeciesArr[i])) {
                    throw new RuntimeException("PasteToModel does not contain preferred Species " + userResolvedRxElements.toSpeciesArr[i]);
                }
            }
            if (userResolvedRxElements.toStructureArr[i] != null) {
                if (!pasteToModel.contains(userResolvedRxElements.toStructureArr[i])) {
                    throw new RuntimeException("PasteToModel does not contain preferred Structure " + userResolvedRxElements.toStructureArr[i]);
                }
            }
        }
    }
    int counter = 0;
    Structure currentStruct = pasteToStructure;
    String copiedStructName = copyFromRxSteps[counter].getStructure().getName();
    StructureTopology structTopology = (copyFromRxSteps[counter].getModel() == null ? pasteToModel.getStructureTopology() : copyFromRxSteps[counter].getModel().getStructureTopology());
    IdentityHashMap<Species, Species> speciesHash = new IdentityHashMap<Species, Species>();
    IdentityHashMap<SpeciesContext, SpeciesContext> speciesContextHash = new IdentityHashMap<SpeciesContext, SpeciesContext>();
    Vector<Issue> issueVector = new Vector<Issue>();
    do {
        // create a new reaction, instead of cloning the old one; set struc
        ReactionStep copyFromReactionStep = copyFromRxSteps[counter];
        String newName = copyFromReactionStep.getName();
        while (pasteToModel.getReactionStep(newName) != null) {
            newName = org.vcell.util.TokenMangler.getNextEnumeratedToken(newName);
        }
        ReactionStep newReactionStep = null;
        if (copyFromReactionStep instanceof SimpleReaction) {
            newReactionStep = new SimpleReaction(pasteToModel, currentStruct, newName, copyFromReactionStep.isReversible());
        } else if (copyFromReactionStep instanceof FluxReaction && currentStruct instanceof Membrane) {
            newReactionStep = new FluxReaction(pasteToModel, (Membrane) currentStruct, null, newName, copyFromReactionStep.isReversible());
        }
        pasteToModel.addReactionStep(newReactionStep);
        reactionsAndSpeciesContexts.put(newReactionStep, copyFromReactionStep);
        Structure toRxnStruct = newReactionStep.getStructure();
        Structure fromRxnStruct = copyFromReactionStep.getStructure();
        if (!fromRxnStruct.getClass().equals(pasteToStructure.getClass())) {
            throw new Exception("Cannot copy reaction from " + fromRxnStruct.getTypeName() + " to " + pasteToStructure.getTypeName() + ".");
        }
        // add appropriate reactionParticipants to newReactionStep.
        StructureTopology toStructureTopology = pasteToModel.getStructureTopology();
        ReactionParticipant[] copyFromRxParticipantArr = copyFromReactionStep.getReactionParticipants();
        if (rxPartMapStructure == null) {
            // null during 'issues' trial
            rxPartMapStructure = new HashMap<String, HashMap<ReactionParticipant, Structure>>();
        }
        if (rxPartMapStructure.get(copyFromReactionStep.getName()) == null) {
            // Ask user to assign species to compartments for each reaction to be pasted
            rxPartMapStructure.put(copyFromReactionStep.getName(), askUserResolveMembraneConnections(parent, pasteToModel.getStructures(), currentStruct, fromRxnStruct, toRxnStruct, copyFromRxParticipantArr, toStructureTopology, structTopology));
        }
        for (int i = 0; i < copyFromRxParticipantArr.length; i += 1) {
            Structure pasteToStruct = currentStruct;
            // if(toRxnStruct instanceof Membrane){
            pasteToStruct = rxPartMapStructure.get(copyFromReactionStep.getName()).get(copyFromRxParticipantArr[i]);
            // if(pasteToStruct == null){
            // for(ReactionParticipant myRXPart:rxPartMapStructure.get(copyFromReactionStep.getName()).keySet()){
            // if(myRXPart.getSpeciesContext().getName().equals(copyFromRxParticipantArr[i].getSpeciesContext().getName())){
            // pasteToStruct = rxPartMapStructure.get(copyFromReactionStep.getName()).get(myRXPart);
            // break;
            // }
            // }
            // }
            // }
            // this adds the speciesContexts and species (if any) to the model)
            String rootSC = ReactionCartoonTool.speciesContextRootFinder(copyFromRxParticipantArr[i].getSpeciesContext());
            SpeciesContext newSc = null;
            SpeciesContext[] matchSC = pasteToModel.getSpeciesContexts();
            for (int j = 0; matchSC != null && j < matchSC.length; j++) {
                String matchRoot = ReactionCartoonTool.speciesContextRootFinder(matchSC[j]);
                if (matchRoot != null && matchRoot.equals(rootSC) && matchSC[j].getStructure().getName().equals(pasteToStruct.getName())) {
                    newSc = matchSC[j];
                    reactionsAndSpeciesContexts.put(newSc, matchSC[j]);
                    break;
                }
            }
            if (newSc == null) {
                newSc = pasteSpecies(parent, copyFromRxParticipantArr[i].getSpecies(), rootSC, pasteToModel, pasteToStruct, bNew, /*bUseDBSpecies,*/
                speciesHash, UserResolvedRxElements.getPreferredReactionElement(userResolvedRxElements, copyFromRxParticipantArr[i]));
                reactionsAndSpeciesContexts.put(newSc, copyFromRxParticipantArr[i].getSpeciesContext());
            }
            // record the old-new speciesContexts (reactionparticipants) in the IdHashMap, this is useful, esp for 'Paste new', while replacing proxyparams.
            SpeciesContext oldSc = copyFromRxParticipantArr[i].getSpeciesContext();
            if (speciesContextHash.get(oldSc) == null) {
                speciesContextHash.put(oldSc, newSc);
            }
            if (copyFromRxParticipantArr[i] instanceof Reactant) {
                newReactionStep.addReactionParticipant(new Reactant(null, newReactionStep, newSc, copyFromRxParticipantArr[i].getStoichiometry()));
            } else if (copyFromRxParticipantArr[i] instanceof Product) {
                newReactionStep.addReactionParticipant(new Product(null, newReactionStep, newSc, copyFromRxParticipantArr[i].getStoichiometry()));
            } else if (copyFromRxParticipantArr[i] instanceof Catalyst) {
                newReactionStep.addCatalyst(newSc);
            }
        }
        // // If 'newReactionStep' is a fluxRxn, set its fluxCarrier
        // if (newReactionStep instanceof FluxReaction) {
        // if (fluxCarrierSp != null) {
        // ((FluxReaction)newReactionStep).setFluxCarrier(fluxCarrierSp, pasteToModel);
        // } else {
        // throw new RuntimeException("Could not set FluxCarrier species for the flux reaction to be pasted");
        // }
        // }
        // For each kinetic parameter expression for new kinetics, replace the proxyParams from old kinetics with proxyParams in new kinetics
        // i.e., if the proxyParams are speciesContexts, replace with corresponding speciesContext in newReactionStep;
        // if the proxyParams are structureSizes or MembraneVoltages, replace with corresponding structure quantity in newReactionStep
        Kinetics oldKinetics = copyFromReactionStep.getKinetics();
        KineticsParameter[] oldKps = oldKinetics.getKineticsParameters();
        KineticsProxyParameter[] oldKprps = oldKinetics.getProxyParameters();
        Hashtable<String, Expression> paramExprHash = new Hashtable<String, Expression>();
        for (int i = 0; oldKps != null && i < oldKps.length; i++) {
            Expression newExpression = new Expression(oldKps[i].getExpression());
            for (int j = 0; oldKprps != null && j < oldKprps.length; j++) {
                // check if kinetic proxy parameter is in kinetic parameter expression
                if (newExpression.hasSymbol(oldKprps[j].getName())) {
                    SymbolTableEntry ste = oldKprps[j].getTarget();
                    Model pasteFromModel = copyFromReactionStep.getModel();
                    if (ste instanceof SpeciesContext) {
                        // if newRxnStruct is a feature/membrane, get matching spContexts from old reaction and replace them in new rate expr.
                        SpeciesContext oldSC = (SpeciesContext) ste;
                        SpeciesContext newSC = speciesContextHash.get(oldSC);
                        if (newSC == null) {
                            // check if oldSc is present in paste-model; if not, add it.
                            if (!pasteToModel.equals(pasteFromModel)) {
                                if (pasteToModel.getSpeciesContext(oldSC.getName()) == null) {
                                    // if paste-model has oldSc struct, paste it there,
                                    Structure newSCStruct = pasteToModel.getStructure(oldSC.getStructure().getName());
                                    if (newSCStruct != null) {
                                        newSC = pasteSpecies(parent, oldSC.getSpecies(), null, pasteToModel, newSCStruct, bNew, /*bUseDBSpecies,*/
                                        speciesHash, UserResolvedRxElements.getPreferredReactionElement(userResolvedRxElements, oldSC));
                                        speciesContextHash.put(oldSC, newSC);
                                    } else {
                                        // oldStruct wasn't found in paste-model, paste it in newRxnStruct and add warning to issues list
                                        newSC = pasteSpecies(parent, oldSC.getSpecies(), null, pasteToModel, toRxnStruct, bNew, /*bUseDBSpecies,*/
                                        speciesHash, UserResolvedRxElements.getPreferredReactionElement(userResolvedRxElements, oldSC));
                                        speciesContextHash.put(oldSC, newSC);
                                        Issue issue = new Issue(oldSC, issueContext, IssueCategory.CopyPaste, "SpeciesContext '" + oldSC.getSpecies().getCommonName() + "' was not found in compartment '" + oldSC.getStructure().getName() + "' in the model; the species was added to the compartment '" + toRxnStruct.getName() + "' where the reaction was pasted.", Issue.SEVERITY_WARNING);
                                        issueVector.add(issue);
                                    }
                                }
                            }
                        // if models are the same and newSc is null, then oldSc is not a rxnParticipant. Leave it as is in the expr.
                        }
                        if (newSC != null) {
                            reactionsAndSpeciesContexts.put(newSC, oldSC);
                            newExpression.substituteInPlace(new Expression(ste.getName()), new Expression(newSC.getName()));
                        }
                    // SpeciesContext sc = null;
                    // Species newSp = model.getSpecies(oldSc.getSpecies().getCommonName());
                    // if  (oldSc.getStructure() == (oldRxnStruct)) {
                    // sc = model.getSpeciesContext(newSp, newRxnStruct);
                    // } else {
                    // if (newRxnStruct instanceof Membrane) {
                    // // for a membrane, we need to make sure that inside-outside spContexts used are appropriately replaced.
                    // if (oldSc.getStructure() == ((Membrane)oldRxnStruct).getOutsideFeature()) {
                    // // old speciesContext is outside (old) membrane, new spContext should be outside new membrane
                    // sc = model.getSpeciesContext(newSp, ((Membrane)newRxnStruct).getOutsideFeature());
                    // } else if (oldSc.getStructure() == ((Membrane)oldRxnStruct).getInsideFeature()) {
                    // // old speciesContext is inside (old) membrane, new spContext should be inside new membrane
                    // sc = model.getSpeciesContext(newSp, ((Membrane)newRxnStruct).getInsideFeature());
                    // }
                    // }
                    // }
                    // if (sc != null) {
                    // newExpression.substituteInPlace(new Expression(ste.getName()), new Expression(sc.getName()));
                    // }
                    } else if (ste instanceof StructureSize) {
                        Structure str = ((StructureSize) ste).getStructure();
                        // if the structure size used is same as the structure in which the reaction is present, change the structSize to appropriate new struct
                        if (str.compareEqual(fromRxnStruct)) {
                            newExpression.substituteInPlace(new Expression(ste.getName()), new Expression(toRxnStruct.getStructureSize().getName()));
                        } else {
                            if (fromRxnStruct instanceof Membrane) {
                                if (str.equals(structTopology.getOutsideFeature((Membrane) fromRxnStruct))) {
                                    newExpression.substituteInPlace(new Expression(ste.getName()), new Expression(structTopology.getOutsideFeature((Membrane) toRxnStruct).getStructureSize().getName()));
                                } else if (str.equals(structTopology.getInsideFeature((Membrane) fromRxnStruct))) {
                                    newExpression.substituteInPlace(new Expression(ste.getName()), new Expression(structTopology.getInsideFeature((Membrane) toRxnStruct).getStructureSize().getName()));
                                }
                            }
                        }
                    } else if (ste instanceof MembraneVoltage) {
                        Membrane membr = ((MembraneVoltage) ste).getMembrane();
                        // if the MembraneVoltage used is same as that of the membrane in which the reaction is present, change the MemVoltage
                        if ((fromRxnStruct instanceof Membrane) && (membr.compareEqual(fromRxnStruct))) {
                            newExpression.substituteInPlace(new Expression(ste.getName()), new Expression(((Membrane) toRxnStruct).getMembraneVoltage().getName()));
                        }
                    } else if (ste instanceof ModelParameter) {
                        // see if model has this global parameter (if rxn is being pasted into another model, it won't)
                        if (!pasteToModel.equals(pasteFromModel)) {
                            ModelParameter oldMp = (ModelParameter) ste;
                            ModelParameter mp = pasteToModel.getModelParameter(oldMp.getName());
                            boolean bNonNumeric = false;
                            String newMpName = oldMp.getName();
                            if (mp != null) {
                                // new model has a model parameter with same name - are they the same param?
                                if (!mp.getExpression().equals(oldMp.getExpression())) {
                                    // no, they are not the same param, so mangle the 'ste' name and add as global in the other model
                                    while (pasteToModel.getModelParameter(newMpName) != null) {
                                        newMpName = TokenMangler.getNextEnumeratedToken(newMpName);
                                    }
                                    // if expression if numeric, add it as such. If not, set it to 0.0 and add it as global
                                    Expression exp = oldMp.getExpression();
                                    if (!exp.flatten().isNumeric()) {
                                        exp = new Expression(0.0);
                                        bNonNumeric = true;
                                    }
                                    ModelParameter newMp = pasteToModel.new ModelParameter(newMpName, exp, Model.ROLE_UserDefined, oldMp.getUnitDefinition());
                                    String annotation = "Copied from model : " + pasteFromModel.getNameScope();
                                    newMp.setModelParameterAnnotation(annotation);
                                    pasteToModel.addModelParameter(newMp);
                                    // if global param name had to be changed, make sure newExpr is updated as well.
                                    if (!newMpName.equals(oldMp.getName())) {
                                        newExpression.substituteInPlace(new Expression(oldMp.getName()), new Expression(newMpName));
                                    }
                                }
                            } else {
                                // no global param with same name was found in other model, so add it to other model.
                                // if expression if numeric, add it as such. If not, set it to 0.0 and add it as global
                                Expression exp = oldMp.getExpression();
                                if (!exp.flatten().isNumeric()) {
                                    exp = new Expression(0.0);
                                    bNonNumeric = true;
                                }
                                ModelParameter newMp = pasteToModel.new ModelParameter(newMpName, exp, Model.ROLE_UserDefined, oldMp.getUnitDefinition());
                                String annotation = "Copied from model : " + pasteFromModel.getNameScope();
                                newMp.setModelParameterAnnotation(annotation);
                                pasteToModel.addModelParameter(newMp);
                            }
                            // if a non-numeric parameter was encountered in the old model, it was added as a numeric (0.0), warn user of change.
                            if (bNonNumeric) {
                                Issue issue = new Issue(oldMp, issueContext, IssueCategory.CopyPaste, "Global parameter '" + oldMp.getName() + "' was non-numeric; it has been added " + "as global parameter '" + newMpName + "' in the new model with value = 0.0. " + "Please update its value, if required, before using it.", Issue.SEVERITY_WARNING);
                                issueVector.add(issue);
                            }
                        }
                    }
                }
            // end - if newExpr.hasSymbol(ProxyParam)
            }
            // now if store <param names, new expression> in hashTable
            if (paramExprHash.get(oldKps[i].getName()) == null) {
                paramExprHash.put(oldKps[i].getName(), newExpression);
            }
        }
        // end for - oldKps (old kinetic parameters)
        // use this new expression to generate 'vcml' for the (new) kinetics (easier way to transfer all kinetic parameters)
        String newKineticsStr = oldKinetics.writeTokensWithReplacingProxyParams(paramExprHash);
        // convert the kinetics 'vcml' to tokens.
        CommentStringTokenizer kineticsTokens = new CommentStringTokenizer(newKineticsStr);
        // skip the first token;
        kineticsTokens.nextToken();
        // second token is the kinetic type; use this to create a dummy kinetics
        String kineticType = kineticsTokens.nextToken();
        Kinetics newkinetics = KineticsDescription.fromVCMLKineticsName(kineticType).createKinetics(newReactionStep);
        // use the remaining tokens to construct the new kinetics
        newkinetics.fromTokens(newKineticsStr);
        // bind newkinetics to newReactionStep and add it to newReactionStep
        newkinetics.bind(newReactionStep);
        newReactionStep.setKinetics(newkinetics);
        counter += 1;
        if (counter == copyFromRxSteps.length) {
            break;
        }
        if (!copiedStructName.equals(fromRxnStruct.getName())) {
            if (currentStruct instanceof Feature) {
                currentStruct = structTopology.getMembrane((Feature) currentStruct);
            } else if (currentStruct instanceof Membrane) {
                currentStruct = structTopology.getInsideFeature((Membrane) currentStruct);
            }
        }
        copiedStructName = fromRxnStruct.getName();
    } while (true);
    return new PasteHelper(issueVector, rxPartMapStructure, reactionsAndSpeciesContexts);
}