/** Converts a Bond to a MSML Bond element */
protected BondType convertBond(IBond bond, String parentID, ArrayList<String> hashes) {
BondType bondElement = new BondType();
String bondID = parentID + PREFIX_BOND + bond.hashCode();
bondElement.setId(bondID);
int atom1 = hashes.indexOf(Integer.toString(bond.getAtom(0).hashCode())) + 1;
int atom2 = hashes.indexOf(Integer.toString(bond.getAtom(1).hashCode())) + 1;
// bondElement.setCustomId("" + bond.getID());
// atom name
// bondElement.setTitle(bond.getID());
/*
* System.out.println(bond.getAtom(0).getSymbol()); System.out.println(bond.getAtom(1).getSymbol());
*/
String a1 = "a" + atom1;
String a2 = "a" + atom2;
List<String> atomrefs = bondElement.getAtomRefs2();
atomrefs.add(a1); // add first atom in bond
atomrefs.add(a2); // add second atom in bond
if (bond.getOrder() != null) {
bondElement.setOrder(bond.getOrder().toString());
}
/*
* if (bond.getStereo() != null){ bondElement.setStereo(bond.getStereo().toString()); //no stereo property as of
* now }
*/
return bondElement;
}
/**
* Returns a CIP-expanded array of side chains of a ligand. If the ligand atom is only connected
* to the chiral atom, the method will return an empty list. The expansion involves the CIP rules,
* so that a double bonded oxygen will be represented twice in the list.
*
* @param ligand the {@link ILigand} for which to return the ILigands
* @return a {@link ILigand} array with the side chains of the ligand atom
*/
@TestMethod("testGetLigandLigands")
public static ILigand[] getLigandLigands(ILigand ligand) {
if (ligand instanceof TerminalLigand) return new ILigand[0];
IAtomContainer container = ligand.getAtomContainer();
IAtom ligandAtom = ligand.getLigandAtom();
IAtom centralAtom = ligand.getCentralAtom();
VisitedAtoms visitedAtoms = ligand.getVisitedAtoms();
List<IBond> bonds = container.getConnectedBondsList(ligandAtom);
// duplicate ligands according to bond order, following the CIP rules
List<ILigand> ligands = new ArrayList<ILigand>();
for (IBond bond : bonds) {
if (bond.contains(centralAtom)) {
if (Order.SINGLE == bond.getOrder()) continue;
int duplication = getDuplication(bond.getOrder()) - 1;
if (duplication > 0) {
for (int i = 1; i <= duplication; i++) {
ligands.add(new TerminalLigand(container, visitedAtoms, ligandAtom, centralAtom));
}
}
} else {
int duplication = getDuplication(bond.getOrder());
IAtom connectedAtom = bond.getConnectedAtom(ligandAtom);
if (visitedAtoms.isVisited(connectedAtom)) {
ligands.add(new TerminalLigand(container, visitedAtoms, ligandAtom, connectedAtom));
} else {
ligands.add(new Ligand(container, visitedAtoms, ligandAtom, connectedAtom));
}
for (int i = 2; i <= duplication; i++) {
ligands.add(new TerminalLigand(container, visitedAtoms, ligandAtom, connectedAtom));
}
}
}
return ligands.toArray(new ILigand[0]);
}
/**
* Return true if a bond is matched between query and target
*
* @param targetBond
* @return
*/
private boolean isBondTypeMatch(IBond targetBond) {
if ((queryBond.getFlag(CDKConstants.ISAROMATIC) == targetBond.getFlag(CDKConstants.ISAROMATIC))
&& (queryBond.getOrder() == targetBond.getOrder())) {
return true;
} else if (queryBond.getFlag(CDKConstants.ISAROMATIC)
&& targetBond.getFlag(CDKConstants.ISAROMATIC)) {
return true;
}
return false;
}
@Test
public void testBond5() throws Exception {
String cmlString =
"<molecule id='m1'><atomArray atomID='a1 a2 a3'/><bondArray atomRef1='a1 a1' atomRef2='a2 a3' order='1 1'/></molecule>";
IChemFile chemFile = parseCMLString(cmlString);
IMolecule mol = checkForSingleMoleculeFile(chemFile);
Assert.assertEquals(3, mol.getAtomCount());
Assert.assertEquals(2, mol.getBondCount());
org.openscience.cdk.interfaces.IBond bond = mol.getBond(0);
Assert.assertEquals(2, bond.getAtomCount());
Assert.assertEquals(IBond.Order.SINGLE, bond.getOrder());
bond = mol.getBond(1);
Assert.assertEquals(2, bond.getAtomCount());
Assert.assertEquals(IBond.Order.SINGLE, bond.getOrder());
}
/**
* set the active center for this molecule. The active center will be those which correspond with
* [A*]-B=C .
*
* <pre>
* A: Atom with single electron
* -: Single bond
* B: Atom
* =: Double bond
* C: Atom
* </pre>
*
* @param reactant The molecule to set the activity
* @throws CDKException
*/
private void setActiveCenters(IAtomContainer reactant) throws CDKException {
if (AtomContainerManipulator.getTotalNegativeFormalCharge(reactant)
!= 0 /*|| AtomContainerManipulator.getTotalPositiveFormalCharge(reactant) != 0*/) return;
Iterator<IAtom> atoms = reactant.atoms().iterator();
while (atoms.hasNext()) {
IAtom atomi = atoms.next();
if (reactant.getConnectedSingleElectronsCount(atomi) == 1) {
Iterator<IBond> bondis = reactant.getConnectedBondsList(atomi).iterator();
while (bondis.hasNext()) {
IBond bondi = bondis.next();
if (bondi.getOrder() == IBond.Order.SINGLE) {
IAtom atomj = bondi.getConnectedAtom(atomi);
if ((atomj.getFormalCharge() == CDKConstants.UNSET ? 0 : atomj.getFormalCharge()) == 0
&& reactant.getConnectedSingleElectronsCount(atomj) == 0) {
Iterator<IBond> bondjs = reactant.getConnectedBondsList(atomj).iterator();
while (bondjs.hasNext()) {
IBond bondj = bondjs.next();
if (bondj.equals(bondi)) continue;
if (bondj.getOrder() == IBond.Order.DOUBLE) {
IAtom atomk = bondj.getConnectedAtom(atomj);
if ((atomk.getFormalCharge() == CDKConstants.UNSET ? 0 : atomk.getFormalCharge())
== 0
&& reactant.getConnectedSingleElectronsCount(atomk) == 0) {
atomi.setFlag(CDKConstants.REACTIVE_CENTER, true);
atomj.setFlag(CDKConstants.REACTIVE_CENTER, true);
atomk.setFlag(CDKConstants.REACTIVE_CENTER, true);
bondi.setFlag(CDKConstants.REACTIVE_CENTER, true);
bondj.setFlag(CDKConstants.REACTIVE_CENTER, true);
}
}
}
}
}
}
}
}
}
/**
* Initiate process. It is needed to call the addExplicitHydrogensToSatisfyValency from the class
* tools.HydrogenAdder.
*
* @param reactants reactants of the reaction
* @param agents agents of the reaction (Must be in this case null)
* @exception CDKException Description of the Exception
*/
@TestMethod("testInitiate_IMoleculeSet_IMoleculeSet")
public IReactionSet initiate(IMoleculeSet reactants, IMoleculeSet agents) throws CDKException {
logger.debug("initiate reaction: HeterolyticCleavagePBReaction");
if (reactants.getMoleculeCount() != 1) {
throw new CDKException("HeterolyticCleavagePBReaction only expects one reactant");
}
if (agents != null) {
throw new CDKException("HeterolyticCleavagePBReaction don't expects agents");
}
IReactionSet setOfReactions =
DefaultChemObjectBuilder.getInstance().newInstance(IReactionSet.class);
IMolecule reactant = reactants.getMolecule(0);
/* if the parameter hasActiveCenter is not fixed yet, set the active centers*/
IParameterReact ipr = super.getParameterClass(SetReactionCenter.class);
if (ipr != null && !ipr.isSetParameter()) setActiveCenters(reactant);
Iterator<IBond> bondis = reactant.bonds().iterator();
while (bondis.hasNext()) {
IBond bondi = bondis.next();
IAtom atom1 = bondi.getAtom(0);
IAtom atom2 = bondi.getAtom(1);
if (bondi.getFlag(CDKConstants.REACTIVE_CENTER)
&& bondi.getOrder() != IBond.Order.SINGLE
&& atom1.getFlag(CDKConstants.REACTIVE_CENTER)
&& atom2.getFlag(CDKConstants.REACTIVE_CENTER)
&& (atom1.getFormalCharge() == CDKConstants.UNSET ? 0 : atom1.getFormalCharge()) == 0
&& (atom2.getFormalCharge() == CDKConstants.UNSET ? 0 : atom2.getFormalCharge()) == 0
&& reactant.getConnectedSingleElectronsCount(atom1) == 0
&& reactant.getConnectedSingleElectronsCount(atom2) == 0) {
/**/
for (int j = 0; j < 2; j++) {
ArrayList<IAtom> atomList = new ArrayList<IAtom>();
if (j == 0) {
atomList.add(atom1);
atomList.add(atom2);
} else {
atomList.add(atom2);
atomList.add(atom1);
}
ArrayList<IBond> bondList = new ArrayList<IBond>();
bondList.add(bondi);
IMoleculeSet moleculeSet = reactant.getBuilder().newInstance(IMoleculeSet.class);
moleculeSet.addMolecule(reactant);
IReaction reaction = mechanism.initiate(moleculeSet, atomList, bondList);
if (reaction == null) continue;
else setOfReactions.addReaction(reaction);
}
}
}
return setOfReactions;
}
@Override
public int seed(IAtomContainer molecule, IAtom atom, BitSet mask) {
double sum = 0;
for (IBond bond : molecule.getConnectedBondsList(atom)) {
if (mask.get(molecule.getAtomNumber(bond.getConnectedAtom(atom))))
sum += order(bond.getOrder());
}
return ((Double) sum).hashCode();
}
private int getAttachedMultipleBondCount(IAtom atom, IAtomContainer atomContainer) {
int count = 0;
for (IBond bond : atomContainer.getConnectedBondsList(atom)) {
if (bond.getOrder() == IBond.Order.SINGLE) {
continue;
}
++count;
}
return count;
}
/**
* Determines if the isolatedRingSystem has attached double bonds, which are not part of the ring
* system itself, and not part of any other ring system. Exceptions: a N.sp2.3 nitrogen with a
* double ring to an oxygen outwards.
*/
private static boolean isRingSystemSproutedWithNonRingDoubleBonds(
IAtomContainer fullContainer, IAtomContainer isolatedRingSystem) {
Iterator<IAtom> atoms = isolatedRingSystem.atoms().iterator();
while (atoms.hasNext()) {
IAtom atom = atoms.next();
Iterator<IBond> neighborBonds = fullContainer.getConnectedBondsList(atom).iterator();
while (neighborBonds.hasNext()) {
IBond neighborBond = neighborBonds.next();
if (!neighborBond.getFlag(CDKConstants.ISINRING)
&& neighborBond.getOrder() == CDKConstants.BONDORDER_DOUBLE
|| neighborBond.getOrder() == CDKConstants.BONDORDER_TRIPLE) {
if (!("N.sp2.3".equals(atom.getAtomTypeName())
&& "O.sp2".equals(neighborBond.getConnectedAtom(atom).getAtomTypeName())))
return true;
}
}
}
return false;
}
/**
* set the active center for this molecule. The active center will be those which correspond with
* A-B-[C*].
*
* <pre>
* A: Atom
* -: bond
* B: Atom
* -: bond
* C: Atom with single electron
* </pre>
*
* @param reactant The molecule to set the activity
* @throws CDKException
*/
private void setActiveCenters(IMolecule reactant) throws CDKException {
Iterator<IAtom> atoms = reactant.atoms().iterator();
while (atoms.hasNext()) {
IAtom atomi = atoms.next();
if (reactant.getConnectedSingleElectronsCount(atomi) == 1 && atomi.getFormalCharge() == 1) {
Iterator<IBond> bondis = reactant.getConnectedBondsList(atomi).iterator();
while (bondis.hasNext()) {
IBond bondi = bondis.next();
if (bondi.getOrder() == IBond.Order.SINGLE) {
IAtom atomj = bondi.getConnectedAtom(atomi);
if (atomj.getFormalCharge() == 0) {
Iterator<IBond> bondjs = reactant.getConnectedBondsList(atomj).iterator();
while (bondjs.hasNext()) {
IBond bondj = bondjs.next();
if (bondj.equals(bondi)) continue;
if (bondj.getOrder() == IBond.Order.SINGLE) {
IAtom atomk = bondj.getConnectedAtom(atomj);
if (atomk.getSymbol().equals("C") && atomk.getFormalCharge() == 0) {
atomi.setFlag(CDKConstants.REACTIVE_CENTER, true);
atomj.setFlag(CDKConstants.REACTIVE_CENTER, true);
atomk.setFlag(CDKConstants.REACTIVE_CENTER, true);
bondi.setFlag(CDKConstants.REACTIVE_CENTER, true);
bondj.setFlag(CDKConstants.REACTIVE_CENTER, true);
}
}
}
}
}
}
}
}
}
@Test
public void testBondAromatic2() throws Exception {
String cmlString =
"<molecule id='m1'><atomArray atomID='a1 a2'/><bondArray><bond atomRefs='a1 a2' order='2'><bondType dictRef='cdk:aromaticBond'/></bond></bondArray></molecule>";
IChemFile chemFile = parseCMLString(cmlString);
IMolecule mol = checkForSingleMoleculeFile(chemFile);
Assert.assertEquals(2, mol.getAtomCount());
Assert.assertEquals(1, mol.getBondCount());
org.openscience.cdk.interfaces.IBond bond = mol.getBond(0);
Assert.assertEquals(CDKConstants.BONDORDER_DOUBLE, bond.getOrder());
Assert.assertTrue(bond.getFlag(CDKConstants.ISAROMATIC));
}
private boolean getIfACarbonIsDoubleBondedToAnOxygen(Molecule mol, IAtom carbonAtom) {
boolean isDoubleBondedToOxygen = false;
List<IAtom> neighToCarbon = mol.getConnectedAtomsList(carbonAtom);
IBond tmpBond;
int counter = 0;
for (int nei = 0; nei < neighToCarbon.size(); nei++) {
IAtom neighbour = neighToCarbon.get(nei);
if (neighbour.getSymbol().equals("O")) {
tmpBond = mol.getBond(neighbour, carbonAtom);
if (tmpBond.getOrder() == IBond.Order.DOUBLE) counter += 1;
}
}
if (counter > 0) isDoubleBondedToOxygen = true;
return isDoubleBondedToOxygen;
}
/**
* set the active center for this molecule. The active center will be those which correspond with
* A-B. If the bond is simple, it will be broken forming two fragments
*
* <pre>
* A: Atom
* #/=/-: bond
* B: Atom
* </pre>
*
* @param reactant The molecule to set the activity
* @throws CDKException
*/
private void setActiveCenters(IMolecule reactant) throws CDKException {
Iterator<IBond> bonds = reactant.bonds().iterator();
while (bonds.hasNext()) {
IBond bond = bonds.next();
IAtom atom1 = bond.getAtom(0);
IAtom atom2 = bond.getAtom(1);
if (bond.getOrder() != IBond.Order.SINGLE
&& (atom1.getFormalCharge() == CDKConstants.UNSET ? 0 : atom1.getFormalCharge()) == 0
&& (atom2.getFormalCharge() == CDKConstants.UNSET ? 0 : atom2.getFormalCharge()) == 0
&& reactant.getConnectedSingleElectronsCount(atom1) == 0
&& reactant.getConnectedSingleElectronsCount(atom2) == 0) {
atom1.setFlag(CDKConstants.REACTIVE_CENTER, true);
atom2.setFlag(CDKConstants.REACTIVE_CENTER, true);
bond.setFlag(CDKConstants.REACTIVE_CENTER, true);
}
}
}
@Test(timeout = 1000)
public void testPyrrole_Silent() throws Exception {
String smiles = "c2ccc3n([H])c1ccccc1c3(c2)";
SmilesParser smilesParser = new SmilesParser(SilentChemObjectBuilder.getInstance());
IAtomContainer molecule = smilesParser.parseSmiles(smiles);
molecule = fbot.kekuliseAromaticRings(molecule);
Assert.assertNotNull(molecule);
molecule = (IAtomContainer) AtomContainerManipulator.removeHydrogens(molecule);
int doubleBondCount = 0;
for (int i = 0; i < molecule.getBondCount(); i++) {
IBond bond = molecule.getBond(i);
Assert.assertTrue(bond.getFlag(CDKConstants.ISAROMATIC));
if (bond.getOrder() == Order.DOUBLE) doubleBondCount++;
}
Assert.assertEquals(6, doubleBondCount);
}
protected void process(
IAtomContainer target,
List<Integer> unmapped_atoms_molB,
int mappingSize,
List<Integer> i_bond_setB,
List<String> c_bond_setB,
List<Integer> mapped_atoms,
int counter) {
int unmapped_numB = unmapped_atoms_molB.size();
boolean bond_considered = false;
boolean normal_bond = true;
for (int atomIndex = 0; atomIndex < target.getBondCount(); atomIndex++) {
Integer indexI = target.getAtomNumber(target.getBond(atomIndex).getAtom(0));
Integer indexJ = target.getAtomNumber(target.getBond(atomIndex).getAtom(1));
IBond bond = target.getBond(atomIndex);
Integer order = (bond.getOrder().ordinal() + 1);
for (int b = 0; b < unmapped_numB; b++) {
if (unmapped_atoms_molB.get(b).equals(indexI)) {
normal_bond =
unMappedAtomsEqualsIndexI(
target, mappingSize, atomIndex, counter, mapped_atoms, indexI, indexJ, order);
bond_considered = true;
} else if (unmapped_atoms_molB.get(b) == indexJ) {
normal_bond =
unMappedAtomsEqualsIndexJ(
target, mappingSize, atomIndex, counter, mapped_atoms, indexI, indexJ, order);
bond_considered = true;
}
if (normal_bond && bond_considered) {
markNormalBonds(atomIndex, i_bond_setB, c_bond_setB, indexI, indexJ, order);
normal_bond = true;
break;
}
}
bond_considered = false;
}
}
@Test
public void testLargeRingSystem() throws Exception {
String smiles = "O=C1Oc6ccccc6(C(O)C1C5c2ccccc2CC(c3ccc(cc3)c4ccccc4)C5)";
SmilesParser smilesParser = new SmilesParser(DefaultChemObjectBuilder.getInstance());
IAtomContainer molecule = smilesParser.parseSmiles(smiles);
molecule = fbot.kekuliseAromaticRings(molecule);
Assert.assertNotNull(molecule);
molecule = (IAtomContainer) AtomContainerManipulator.removeHydrogens(molecule);
Assert.assertEquals(34, molecule.getAtomCount());
// we should have 14 double bonds
int doubleBondCount = 0;
for (int i = 0; i < molecule.getBondCount(); i++) {
IBond bond = molecule.getBond(i);
if (bond.getOrder() == Order.DOUBLE) doubleBondCount++;
}
Assert.assertEquals(13, doubleBondCount);
}
/** @cdk.bug 3506770 */
@Test
public void testLargeBioclipseUseCase() throws Exception {
String smiles =
"COc1ccc2[C@@H]3[C@H](COc2c1)C(C)(C)OC4=C3C(=O)C(=O)C5=C4OC(C)(C)[C@@H]6COc7cc(OC)ccc7[C@H]56";
SmilesParser smilesParser = new SmilesParser(DefaultChemObjectBuilder.getInstance());
IAtomContainer molecule = smilesParser.parseSmiles(smiles);
molecule = fbot.kekuliseAromaticRings(molecule);
Assert.assertNotNull(molecule);
molecule = (IAtomContainer) AtomContainerManipulator.removeHydrogens(molecule);
Assert.assertEquals(40, molecule.getAtomCount());
// we should have 14 double bonds
int doubleBondCount = 0;
for (int i = 0; i < molecule.getBondCount(); i++) {
IBond bond = molecule.getBond(i);
if (bond.getOrder() == Order.DOUBLE) doubleBondCount++;
}
Assert.assertEquals(10, doubleBondCount);
}
/**
* This method calculate the number of bonds of a given type in an atomContainer
*
* @param container AtomContainer
* @return The number of bonds of a certain type.
*/
@Override
public DescriptorValue calculate(IAtomContainer container) {
if (order.equals("")) {
int bondCount = 0;
for (IBond bond : container.bonds()) {
boolean hasHydrogen = false;
for (int i = 0; i < bond.getAtomCount(); i++) {
if (bond.getAtom(i).getSymbol().equals("H")) {
hasHydrogen = true;
break;
}
}
if (!hasHydrogen) bondCount++;
}
return new DescriptorValue(
getSpecification(),
getParameterNames(),
getParameters(),
new IntegerResult(bondCount),
getDescriptorNames(),
null);
}
int bondCount = 0;
for (IBond bond : container.bonds()) {
if (bondMatch(bond.getOrder(), order)) {
bondCount += 1;
}
}
return new DescriptorValue(
getSpecification(),
getParameterNames(),
getParameters(),
new IntegerResult(bondCount),
getDescriptorNames());
}
/**
* Helper method determines if a bond is defined (not null) and whether it is a sigma (single)
* bond with no stereo attribute (wedge/hatch).
*
* @param bond the bond to test
* @return the bond is a planar sigma bond
*/
private static boolean isPlanarSigmaBond(IBond bond) {
return bond != null
&& IBond.Order.SINGLE.equals(bond.getOrder())
&& IBond.Stereo.NONE.equals(bond.getStereo());
}
/**
* Determine whether the bond order is 'double'.
*
* @param bond a bond
* @return the bond is a double bond.
*/
private static boolean isDoubleBond(IBond bond) {
return IBond.Order.DOUBLE.equals(bond.getOrder());
}
/**
* Initiate process. It is needed to call the addExplicitHydrogensToSatisfyValency from the class
* tools.HydrogenAdder.
*
* @exception CDKException Description of the Exception
* @param reactants reactants of the reaction.
* @param agents agents of the reaction (Must be in this case null).
*/
@TestMethod("testInitiate_IAtomContainerSet_IAtomContainerSet")
public IReactionSet initiate(IAtomContainerSet reactants, IAtomContainerSet agents)
throws CDKException {
logger.debug("initiate reaction: RearrangementRadicalReaction");
if (reactants.getAtomContainerCount() != 1) {
throw new CDKException("RearrangementRadicalReaction only expects one reactant");
}
if (agents != null) {
throw new CDKException("RearrangementRadicalReaction don't expects agents");
}
IReactionSet setOfReactions =
DefaultChemObjectBuilder.getInstance().newInstance(IReactionSet.class);
IAtomContainer reactant = reactants.getAtomContainer(0);
/* if the parameter hasActiveCenter is not fixed yet, set the active centers*/
IParameterReact ipr = super.getParameterClass(SetReactionCenter.class);
if (ipr != null && !ipr.isSetParameter()) setActiveCenters(reactant);
Iterator<IAtom> atoms = reactants.getAtomContainer(0).atoms().iterator();
while (atoms.hasNext()) {
IAtom atomi = atoms.next();
if (atomi.getFlag(CDKConstants.REACTIVE_CENTER)
&& reactant.getConnectedSingleElectronsCount(atomi) == 1) {
Iterator<IBond> bondis = reactant.getConnectedBondsList(atomi).iterator();
while (bondis.hasNext()) {
IBond bondi = bondis.next();
if (bondi.getFlag(CDKConstants.REACTIVE_CENTER)
&& bondi.getOrder() == IBond.Order.SINGLE) {
IAtom atomj = bondi.getConnectedAtom(atomi);
if (atomi.getFlag(CDKConstants.REACTIVE_CENTER)
&& (atomj.getFormalCharge() == CDKConstants.UNSET ? 0 : atomj.getFormalCharge())
== 0
&& reactant.getConnectedSingleElectronsCount(atomj) == 0) {
Iterator<IBond> bondjs = reactant.getConnectedBondsList(atomj).iterator();
while (bondjs.hasNext()) {
IBond bondj = bondjs.next();
if (bondj.equals(bondi)) continue;
if (bondj.getFlag(CDKConstants.REACTIVE_CENTER)
&& bondj.getOrder() == IBond.Order.DOUBLE) {
IAtom atomk = bondj.getConnectedAtom(atomj);
if (atomk.getFlag(CDKConstants.REACTIVE_CENTER)
&& (atomk.getFormalCharge() == CDKConstants.UNSET
? 0
: atomk.getFormalCharge())
== 0
&& reactant.getConnectedSingleElectronsCount(atomk) == 0) {
ArrayList<IAtom> atomList = new ArrayList<IAtom>();
atomList.add(atomi);
atomList.add(atomj);
atomList.add(atomk);
ArrayList<IBond> bondList = new ArrayList<IBond>();
bondList.add(bondi);
bondList.add(bondj);
IAtomContainerSet moleculeSet =
reactant.getBuilder().newInstance(IAtomContainerSet.class);
moleculeSet.addAtomContainer(reactant);
IReaction reaction = mechanism.initiate(moleculeSet, atomList, bondList);
if (reaction == null) continue;
else setOfReactions.addReaction(reaction);
}
}
}
}
}
}
}
}
return setOfReactions;
}
/**
* Choose any possible quadruple of the set of atoms in ac and establish all of the possible
* bonding schemes according to Faulon's equations.
*/
public static List sample(IMolecule ac) {
logger.debug("RandomGenerator->mutate() Start");
List structures = new ArrayList();
int nrOfAtoms = ac.getAtomCount();
double a11 = 0, a12 = 0, a22 = 0, a21 = 0;
double b11 = 0, lowerborder = 0, upperborder = 0;
double b12 = 0;
double b21 = 0;
double b22 = 0;
double[] cmax = new double[4];
double[] cmin = new double[4];
IAtomContainer newAc = null;
IAtom ax1 = null, ax2 = null, ay1 = null, ay2 = null;
IBond b1 = null, b2 = null, b3 = null, b4 = null;
// int[] choices = new int[3];
/* We need at least two non-zero bonds in order to be successful */
int nonZeroBondsCounter = 0;
for (int x1 = 0; x1 < nrOfAtoms; x1++) {
for (int x2 = x1 + 1; x2 < nrOfAtoms; x2++) {
for (int y1 = x2 + 1; y1 < nrOfAtoms; y1++) {
for (int y2 = y1 + 1; y2 < nrOfAtoms; y2++) {
nonZeroBondsCounter = 0;
ax1 = ac.getAtom(x1);
ay1 = ac.getAtom(y1);
ax2 = ac.getAtom(x2);
ay2 = ac.getAtom(y2);
/* Get four bonds for these four atoms */
b1 = ac.getBond(ax1, ay1);
if (b1 != null) {
a11 = BondManipulator.destroyBondOrder(b1.getOrder());
nonZeroBondsCounter++;
} else {
a11 = 0;
}
b2 = ac.getBond(ax1, ay2);
if (b2 != null) {
a12 = BondManipulator.destroyBondOrder(b2.getOrder());
nonZeroBondsCounter++;
} else {
a12 = 0;
}
b3 = ac.getBond(ax2, ay1);
if (b3 != null) {
a21 = BondManipulator.destroyBondOrder(b3.getOrder());
nonZeroBondsCounter++;
} else {
a21 = 0;
}
b4 = ac.getBond(ax2, ay2);
if (b4 != null) {
a22 = BondManipulator.destroyBondOrder(b4.getOrder());
nonZeroBondsCounter++;
} else {
a22 = 0;
}
if (nonZeroBondsCounter > 1) {
/* Compute the range for b11 (see Faulons formulae for details) */
cmax[0] = 0;
cmax[1] = a11 - a22;
cmax[2] = a11 + a12 - 3;
cmax[3] = a11 + a21 - 3;
cmin[0] = 3;
cmin[1] = a11 + a12;
cmin[2] = a11 + a21;
cmin[3] = a11 - a22 + 3;
lowerborder = MathTools.max(cmax);
upperborder = MathTools.min(cmin);
for (b11 = lowerborder; b11 <= upperborder; b11++) {
if (b11 != a11) {
b12 = a11 + a12 - b11;
b21 = a11 + a21 - b11;
b22 = a22 - a11 + b11;
logger.debug("Trying atom combination : " + x1 + ":" + x2 + ":" + y1 + ":" + y2);
try {
newAc = (IAtomContainer) ac.clone();
change(newAc, x1, y1, x2, y2, b11, b12, b21, b22);
if (ConnectivityChecker.isConnected(newAc)) {
structures.add(newAc);
} else {
logger.debug("not connected");
}
} catch (CloneNotSupportedException e) {
logger.error("Cloning exception: " + e.getMessage());
logger.debug(e);
}
}
}
}
}
}
}
}
return structures;
}
/**
* Read an IAtomContainer from a file in MDL sd format
*
* @return The Molecule that was read from the MDL file.
*/
private IAtomContainer readAtomContainer(IAtomContainer molecule) throws CDKException {
logger.debug("Reading new molecule");
IAtomContainer outputContainer = null;
int linecount = 0;
int atoms = 0;
int bonds = 0;
int atom1 = 0;
int atom2 = 0;
int order = 0;
IBond.Stereo stereo = (IBond.Stereo) CDKConstants.UNSET;
int RGroupCounter = 1;
int Rnumber = 0;
String[] rGroup = null;
double x = 0.0;
double y = 0.0;
double z = 0.0;
double totalX = 0.0;
double totalY = 0.0;
double totalZ = 0.0;
String title = null;
String remark = null;
// int[][] conMat = new int[0][0];
// String help;
IAtom atom;
String line = "";
// A map to keep track of R# atoms so that RGP line can be parsed
Map<Integer, IPseudoAtom> rAtoms = new HashMap<Integer, IPseudoAtom>();
try {
IsotopeFactory isotopeFactory = Isotopes.getInstance();
logger.info("Reading header");
line = input.readLine();
linecount++;
if (line == null) {
return null;
}
logger.debug("Line " + linecount + ": " + line);
if (line.startsWith("$$$$")) {
logger.debug("File is empty, returning empty molecule");
return molecule;
}
if (line.length() > 0) {
title = line;
}
line = input.readLine();
linecount++;
logger.debug("Line " + linecount + ": " + line);
line = input.readLine();
linecount++;
logger.debug("Line " + linecount + ": " + line);
if (line.length() > 0) {
remark = line;
}
logger.info("Reading rest of file");
line = input.readLine();
linecount++;
logger.debug("Line " + linecount + ": " + line);
// if the line is empty we hav a problem - either a malformed
// molecule entry or just extra new lines at the end of the file
if (line.length() == 0) {
// read till the next $$$$ or EOF
while (true) {
line = input.readLine();
linecount++;
if (line == null) {
return null;
}
if (line.startsWith("$$$$")) {
return molecule; // an empty molecule
}
}
}
// check the CT block version
if (line.contains("V3000") || line.contains("v3000")) {
handleError("This file must be read with the MDLV3000Reader.");
} else if (!line.contains("V2000") && !line.contains("v2000")) {
handleError("This file must be read with the MDLReader.");
}
atoms = Integer.parseInt(line.substring(0, 3).trim());
List<IAtom> atomList = new ArrayList<IAtom>();
logger.debug("Atomcount: " + atoms);
bonds = Integer.parseInt(line.substring(3, 6).trim());
logger.debug("Bondcount: " + bonds);
List<IBond> bondList = new ArrayList<IBond>();
// used for applying the MDL valence model
int[] explicitValence = new int[atoms];
// read ATOM block
logger.info("Reading atom block");
atomsByLinePosition = new ArrayList<IAtom>();
atomsByLinePosition.add(null); // 0 is not a valid position
int atomBlockLineNumber = 0;
for (int f = 0; f < atoms; f++) {
line = input.readLine();
linecount++;
atomBlockLineNumber++;
Matcher trailingSpaceMatcher = TRAILING_SPACE.matcher(line);
if (trailingSpaceMatcher.find()) {
handleError(
"Trailing space found",
linecount,
trailingSpaceMatcher.start(),
trailingSpaceMatcher.end());
line = trailingSpaceMatcher.replaceAll("");
}
x = Double.parseDouble(line.substring(0, 10).trim());
y = Double.parseDouble(line.substring(10, 20).trim());
z = Double.parseDouble(line.substring(20, 30).trim());
// *all* values should be zero, not just the sum
totalX += Math.abs(x);
totalY += Math.abs(y);
totalZ += Math.abs(z);
logger.debug("Coordinates: " + x + "; " + y + "; " + z);
String element = line.substring(31, Math.min(line.length(), 34)).trim();
if (line.length() < 34) {
handleError(
"Element atom type does not follow V2000 format type should of length three"
+ " and padded with space if required",
linecount,
31,
34);
}
logger.debug("Atom type: ", element);
if (isotopeFactory.isElement(element)) {
atom = isotopeFactory.configure(molecule.getBuilder().newInstance(IAtom.class, element));
} else if ("A".equals(element)) {
atom = molecule.getBuilder().newInstance(IPseudoAtom.class, element);
} else if ("Q".equals(element)) {
atom = molecule.getBuilder().newInstance(IPseudoAtom.class, element);
} else if ("*".equals(element)) {
atom = molecule.getBuilder().newInstance(IPseudoAtom.class, element);
} else if ("LP".equals(element)) {
atom = molecule.getBuilder().newInstance(IPseudoAtom.class, element);
} else if ("L".equals(element)) {
atom = molecule.getBuilder().newInstance(IPseudoAtom.class, element);
} else if (element.equals("R") || (element.length() > 0 && element.charAt(0) == 'R')) {
logger.debug("Atom ", element, " is not an regular element. Creating a PseudoAtom.");
// check if the element is R
rGroup = element.split("^R");
atom = null;
if (rGroup.length > 1) {
try {
Rnumber = Integer.valueOf(rGroup[(rGroup.length - 1)]);
RGroupCounter = Rnumber;
element = "R" + Rnumber;
atom = molecule.getBuilder().newInstance(IPseudoAtom.class, element);
} catch (Exception ex) {
// This happens for atoms labeled "R#".
// The Rnumber may be set later on, using RGP line
atom = molecule.getBuilder().newInstance(IPseudoAtom.class, "R");
rAtoms.put(atomBlockLineNumber, (IPseudoAtom) atom);
}
} else {
atom = molecule.getBuilder().newInstance(IPseudoAtom.class, element);
}
} else {
handleError(
"Invalid element type. Must be an existing " + "element, or one in: A, Q, L, LP, *.",
linecount,
32,
35);
atom = molecule.getBuilder().newInstance(IPseudoAtom.class, element);
atom.setSymbol(element);
}
// store as 3D for now, convert to 2D (if totalZ == 0.0) later
atom.setPoint3d(new Point3d(x, y, z));
// parse further fields
if (line.length() >= 36) {
String massDiffString = line.substring(34, 36).trim();
logger.debug("Mass difference: ", massDiffString);
if (!(atom instanceof IPseudoAtom)) {
try {
int massDiff = Integer.parseInt(massDiffString);
if (massDiff != 0) {
IIsotope major = Isotopes.getInstance().getMajorIsotope(element);
atom.setMassNumber(major.getMassNumber() + massDiff);
}
} catch (Exception exception) {
handleError("Could not parse mass difference field.", linecount, 35, 37, exception);
}
} else {
logger.error("Cannot set mass difference for a non-element!");
}
} else {
handleError("Mass difference is missing", linecount, 34, 36);
}
// set the stereo partiy
Integer parity = line.length() > 41 ? Character.digit(line.charAt(41), 10) : 0;
atom.setStereoParity(parity);
if (line.length() >= 51) {
String valenceString = removeNonDigits(line.substring(48, 51));
logger.debug("Valence: ", valenceString);
if (!(atom instanceof IPseudoAtom)) {
try {
int valence = Integer.parseInt(valenceString);
if (valence != 0) {
// 15 is defined as 0 in mol files
if (valence == 15) atom.setValency(0);
else atom.setValency(valence);
}
} catch (Exception exception) {
handleError(
"Could not parse valence information field", linecount, 49, 52, exception);
}
} else {
logger.error("Cannot set valence information for a non-element!");
}
}
if (line.length() >= 39) {
String chargeCodeString = line.substring(36, 39).trim();
logger.debug("Atom charge code: ", chargeCodeString);
int chargeCode = Integer.parseInt(chargeCodeString);
if (chargeCode == 0) {
// uncharged species
} else if (chargeCode == 1) {
atom.setFormalCharge(+3);
} else if (chargeCode == 2) {
atom.setFormalCharge(+2);
} else if (chargeCode == 3) {
atom.setFormalCharge(+1);
} else if (chargeCode == 4) {
} else if (chargeCode == 5) {
atom.setFormalCharge(-1);
} else if (chargeCode == 6) {
atom.setFormalCharge(-2);
} else if (chargeCode == 7) {
atom.setFormalCharge(-3);
}
} else {
handleError("Atom charge is missing", linecount, 36, 39);
}
try {
// read the mmm field as position 61-63
String reactionAtomIDString = line.substring(60, 63).trim();
logger.debug("Parsing mapping id: ", reactionAtomIDString);
try {
int reactionAtomID = Integer.parseInt(reactionAtomIDString);
if (reactionAtomID != 0) {
atom.setProperty(CDKConstants.ATOM_ATOM_MAPPING, reactionAtomID);
}
} catch (Exception exception) {
logger.error("Mapping number ", reactionAtomIDString, " is not an integer.");
logger.debug(exception);
}
} catch (Exception exception) {
// older mol files don't have all these fields...
logger.warn("A few fields are missing. Older MDL MOL file?");
}
// shk3: This reads shifts from after the molecule. I don't think this is an official
// format, but I saw it frequently 80=>78 for alk
if (line.length() >= 78) {
double shift = Double.parseDouble(line.substring(69, 80).trim());
atom.setProperty("first shift", shift);
}
if (line.length() >= 87) {
double shift = Double.parseDouble(line.substring(79, 87).trim());
atom.setProperty("second shift", shift);
}
atomList.add(atom);
atomsByLinePosition.add(atom);
}
// convert to 2D, if totalZ == 0
if (totalX == 0.0 && totalY == 0.0 && totalZ == 0.0) {
logger.info("All coordinates are 0.0");
if (atomList.size() == 1) {
atomList.get(0).setPoint2d(new Point2d(x, y));
} else {
for (IAtom atomToUpdate : atomList) {
atomToUpdate.setPoint3d(null);
}
}
} else if (totalZ == 0.0 && !forceReadAs3DCoords.isSet()) {
logger.info("Total 3D Z is 0.0, interpreting it as a 2D structure");
for (IAtom atomToUpdate : atomList) {
Point3d p3d = atomToUpdate.getPoint3d();
if (p3d != null) {
atomToUpdate.setPoint2d(new Point2d(p3d.x, p3d.y));
atomToUpdate.setPoint3d(null);
}
}
}
// read BOND block
logger.info("Reading bond block");
int queryBondCount = 0;
for (int f = 0; f < bonds; f++) {
line = input.readLine();
linecount++;
atom1 = Integer.parseInt(line.substring(0, 3).trim());
atom2 = Integer.parseInt(line.substring(3, 6).trim());
order = Integer.parseInt(line.substring(6, 9).trim());
if (line.length() >= 12) {
int mdlStereo =
line.length() > 12
? Integer.parseInt(line.substring(9, 12).trim())
: Integer.parseInt(line.substring(9).trim());
if (mdlStereo == 1) {
// MDL up bond
stereo = IBond.Stereo.UP;
} else if (mdlStereo == 6) {
// MDL down bond
stereo = IBond.Stereo.DOWN;
} else if (mdlStereo == 0) {
if (order == 2) {
// double bond stereo defined by coordinates
stereo = IBond.Stereo.E_Z_BY_COORDINATES;
} else {
// bond has no stereochemistry
stereo = IBond.Stereo.NONE;
}
} else if (mdlStereo == 3 && order == 2) {
// unknown E/Z stereochemistry
stereo = IBond.Stereo.E_OR_Z;
} else if (mdlStereo == 4) {
// MDL bond undefined
stereo = IBond.Stereo.UP_OR_DOWN;
}
} else {
handleError("Missing expected stereo field at line: ", linecount, 10, 12);
}
if (logger.isDebugEnabled()) {
logger.debug("Bond: " + atom1 + " - " + atom2 + "; order " + order);
}
// interpret CTfile's special bond orders
IAtom a1 = atomList.get(atom1 - 1);
IAtom a2 = atomList.get(atom2 - 1);
IBond newBond = null;
if (order >= 1 && order <= 3) {
IBond.Order cdkOrder = IBond.Order.SINGLE;
if (order == 2) cdkOrder = IBond.Order.DOUBLE;
if (order == 3) cdkOrder = IBond.Order.TRIPLE;
if (stereo != null) {
newBond = molecule.getBuilder().newInstance(IBond.class, a1, a2, cdkOrder, stereo);
} else {
newBond = molecule.getBuilder().newInstance(IBond.class, a1, a2, cdkOrder);
}
} else if (order == 4) {
// aromatic bond
if (stereo != null) {
newBond =
molecule.getBuilder().newInstance(IBond.class, a1, a2, IBond.Order.UNSET, stereo);
} else {
newBond = molecule.getBuilder().newInstance(IBond.class, a1, a2, IBond.Order.UNSET);
}
// mark both atoms and the bond as aromatic and raise the SINGLE_OR_DOUBLE-flag
newBond.setFlag(CDKConstants.SINGLE_OR_DOUBLE, true);
newBond.setFlag(CDKConstants.ISAROMATIC, true);
a1.setFlag(CDKConstants.ISAROMATIC, true);
a2.setFlag(CDKConstants.ISAROMATIC, true);
} else {
queryBondCount++;
newBond = new CTFileQueryBond(molecule.getBuilder());
IAtom[] bondAtoms = {a1, a2};
newBond.setAtoms(bondAtoms);
newBond.setOrder(null);
CTFileQueryBond.Type queryBondType = null;
switch (order) {
case 5:
queryBondType = CTFileQueryBond.Type.SINGLE_OR_DOUBLE;
break;
case 6:
queryBondType = CTFileQueryBond.Type.SINGLE_OR_AROMATIC;
break;
case 7:
queryBondType = CTFileQueryBond.Type.DOUBLE_OR_AROMATIC;
break;
case 8:
queryBondType = CTFileQueryBond.Type.ANY;
break;
}
((CTFileQueryBond) newBond).setType(queryBondType);
newBond.setStereo(stereo);
}
bondList.add((newBond));
// add the bond order to the explicit valence for each atom
if (newBond.getOrder() != null && newBond.getOrder() != IBond.Order.UNSET) {
explicitValence[atom1 - 1] += newBond.getOrder().numeric();
explicitValence[atom2 - 1] += newBond.getOrder().numeric();
} else {
explicitValence[atom1 - 1] = Integer.MIN_VALUE;
explicitValence[atom2 - 1] = Integer.MIN_VALUE;
}
}
if (queryBondCount == 0) outputContainer = molecule;
else {
outputContainer = new QueryAtomContainer(molecule.getBuilder());
}
outputContainer.setProperty(CDKConstants.TITLE, title);
outputContainer.setProperty(CDKConstants.REMARK, remark);
for (IAtom at : atomList) {
outputContainer.addAtom(at);
}
for (IBond bnd : bondList) {
outputContainer.addBond(bnd);
}
// read PROPERTY block
logger.info("Reading property block");
while (true) {
line = input.readLine();
linecount++;
if (line == null) {
handleError("The expected property block is missing!", linecount, 0, 0);
}
if (line.startsWith("M END")) break;
boolean lineRead = false;
if (line.startsWith("M CHG")) {
// FIXME: if this is encountered for the first time, all
// atom charges should be set to zero first!
int infoCount = Integer.parseInt(line.substring(6, 9).trim());
StringTokenizer st = new StringTokenizer(line.substring(9));
for (int i = 1; i <= infoCount; i++) {
String token = st.nextToken();
int atomNumber = Integer.parseInt(token.trim());
token = st.nextToken();
int charge = Integer.parseInt(token.trim());
outputContainer.getAtom(atomNumber - 1).setFormalCharge(charge);
}
} else if (line.matches("A\\s{1,4}\\d+")) {
// Reads the pseudo atom property from the mol file
// The atom number of the to replaced atom
int aliasAtomNumber =
Integer.parseInt(line.replaceFirst("A\\s{1,4}", "")) - RGroupCounter;
line = input.readLine();
linecount++;
String[] aliasArray = line.split("\\\\");
// name of the alias atom like R1 or R2 etc.
String alias = "";
for (int i = 0; i < aliasArray.length; i++) {
alias += aliasArray[i];
}
IAtom aliasAtom = outputContainer.getAtom(aliasAtomNumber);
// skip if already a pseudoatom
if (aliasAtom instanceof IPseudoAtom) {
((IPseudoAtom) aliasAtom).setLabel(alias);
continue;
}
IAtom newPseudoAtom = molecule.getBuilder().newInstance(IPseudoAtom.class, alias);
if (aliasAtom.getPoint2d() != null) {
newPseudoAtom.setPoint2d(aliasAtom.getPoint2d());
}
if (aliasAtom.getPoint3d() != null) {
newPseudoAtom.setPoint3d(aliasAtom.getPoint3d());
}
outputContainer.addAtom(newPseudoAtom);
List<IBond> bondsOfAliasAtom = outputContainer.getConnectedBondsList(aliasAtom);
for (int i = 0; i < bondsOfAliasAtom.size(); i++) {
IBond bondOfAliasAtom = bondsOfAliasAtom.get(i);
IAtom connectedToAliasAtom = bondOfAliasAtom.getConnectedAtom(aliasAtom);
IBond newBond = bondOfAliasAtom.getBuilder().newInstance(IBond.class);
newBond.setAtoms(new IAtom[] {connectedToAliasAtom, newPseudoAtom});
newBond.setOrder(bondOfAliasAtom.getOrder());
outputContainer.addBond(newBond);
outputContainer.removeBond(aliasAtom, connectedToAliasAtom);
}
outputContainer.removeAtom(aliasAtom);
RGroupCounter++;
} else if (line.startsWith("M ISO")) {
try {
String countString = line.substring(6, 10).trim();
int infoCount = Integer.parseInt(countString);
StringTokenizer st = new StringTokenizer(line.substring(10));
for (int i = 1; i <= infoCount; i++) {
int atomNumber = Integer.parseInt(st.nextToken().trim());
int absMass = Integer.parseInt(st.nextToken().trim());
if (absMass != 0) {
IAtom isotope = outputContainer.getAtom(atomNumber - 1);
isotope.setMassNumber(absMass);
}
}
} catch (NumberFormatException exception) {
String error =
"Error ("
+ exception.getMessage()
+ ") while parsing line "
+ linecount
+ ": "
+ line
+ " in property block.";
logger.error(error);
handleError(
"NumberFormatException in isotope information.", linecount, 7, 11, exception);
}
} else if (line.startsWith("M RAD")) {
try {
String countString = line.substring(6, 9).trim();
int infoCount = Integer.parseInt(countString);
StringTokenizer st = new StringTokenizer(line.substring(9));
for (int i = 1; i <= infoCount; i++) {
int atomNumber = Integer.parseInt(st.nextToken().trim());
int spinMultiplicity = Integer.parseInt(st.nextToken().trim());
MDLV2000Writer.SPIN_MULTIPLICITY spin = MDLV2000Writer.SPIN_MULTIPLICITY.NONE;
if (spinMultiplicity > 0) {
IAtom radical = outputContainer.getAtom(atomNumber - 1);
switch (spinMultiplicity) {
case 1:
spin = MDLV2000Writer.SPIN_MULTIPLICITY.DOUBLET;
break;
case 2:
spin = MDLV2000Writer.SPIN_MULTIPLICITY.SINGLET;
break;
case 3:
spin = MDLV2000Writer.SPIN_MULTIPLICITY.TRIPLET;
break;
default:
logger.debug("Invalid spin multiplicity found: " + spinMultiplicity);
break;
}
for (int j = 0; j < spin.getSingleElectrons(); j++) {
outputContainer.addSingleElectron(
molecule.getBuilder().newInstance(ISingleElectron.class, radical));
}
}
}
} catch (NumberFormatException exception) {
String error =
"Error ("
+ exception.getMessage()
+ ") while parsing line "
+ linecount
+ ": "
+ line
+ " in property block.";
logger.error(error);
handleError(
"NumberFormatException in radical information", linecount, 7, 10, exception);
}
} else if (line.startsWith("G ")) {
try {
String atomNumberString = line.substring(3, 6).trim();
int atomNumber = Integer.parseInt(atomNumberString);
// String whatIsThisString = line.substring(6,9).trim();
String atomName = input.readLine();
// convert Atom into a PseudoAtom
IAtom prevAtom = outputContainer.getAtom(atomNumber - 1);
IPseudoAtom pseudoAtom = molecule.getBuilder().newInstance(IPseudoAtom.class, atomName);
if (prevAtom.getPoint2d() != null) {
pseudoAtom.setPoint2d(prevAtom.getPoint2d());
}
if (prevAtom.getPoint3d() != null) {
pseudoAtom.setPoint3d(prevAtom.getPoint3d());
}
AtomContainerManipulator.replaceAtomByAtom(molecule, prevAtom, pseudoAtom);
} catch (NumberFormatException exception) {
String error =
"Error ("
+ exception.toString()
+ ") while parsing line "
+ linecount
+ ": "
+ line
+ " in property block.";
logger.error(error);
handleError("NumberFormatException in group information", linecount, 4, 7, exception);
}
} else if (line.startsWith("M RGP")) {
StringTokenizer st = new StringTokenizer(line);
// Ignore first 3 tokens (overhead).
st.nextToken();
st.nextToken();
st.nextToken();
// Process the R group numbers as defined in RGP line.
while (st.hasMoreTokens()) {
Integer position = new Integer(st.nextToken());
Rnumber = new Integer(st.nextToken());
IPseudoAtom pseudoAtom = rAtoms.get(position);
if (pseudoAtom != null) {
pseudoAtom.setLabel("R" + Rnumber);
}
}
}
if (line.startsWith("V ")) {
Integer atomNumber = new Integer(line.substring(3, 6).trim());
IAtom atomWithComment = outputContainer.getAtom(atomNumber - 1);
atomWithComment.setProperty(CDKConstants.COMMENT, line.substring(7));
}
if (!lineRead) {
logger.warn("Skipping line in property block: ", line);
}
}
if (interpretHydrogenIsotopes.isSet()) {
fixHydrogenIsotopes(molecule, isotopeFactory);
}
// note: apply the valence model last so that all fixes (i.e. hydrogen
// isotopes) are in place
for (int i = 0; i < atoms; i++) {
applyMDLValenceModel(outputContainer.getAtom(i), explicitValence[i]);
}
} catch (CDKException exception) {
String error =
"Error while parsing line " + linecount + ": " + line + " -> " + exception.getMessage();
logger.error(error);
logger.debug(exception);
throw exception;
} catch (Exception exception) {
exception.printStackTrace();
String error =
"Error while parsing line " + linecount + ": " + line + " -> " + exception.getMessage();
logger.error(error);
logger.debug(exception);
handleError("Error while parsing line: " + line, linecount, 0, 0, exception);
}
return outputContainer;
}
/**
* Get the container which is found resonance from a IMolecule. It is based on looking if the
* order of the bond changes.
*
* @param molecule The IMolecule to analyze
* @return The different containers
*/
@TestMethod("testGetContainers_IMolecule")
public IAtomContainerSet getContainers(IMolecule molecule) {
IAtomContainerSet setOfCont = molecule.getBuilder().newAtomContainerSet();
IMoleculeSet setOfMol = getStructures(molecule);
if (setOfMol.getMoleculeCount() == 0) return setOfCont;
/*extraction of all bonds which has been produced a changes of order*/
List<IBond> bondList = new ArrayList<IBond>();
for (int i = 1; i < setOfMol.getMoleculeCount(); i++) {
IMolecule mol = setOfMol.getMolecule(i);
for (int j = 0; j < mol.getBondCount(); j++) {
IBond bond = molecule.getBond(j);
if (!mol.getBond(j).getOrder().equals(bond.getOrder())) {
if (!bondList.contains(bond)) bondList.add(bond);
}
}
}
if (bondList.size() == 0) return null;
int[] flagBelonging = new int[bondList.size()];
for (int i = 0; i < flagBelonging.length; i++) flagBelonging[i] = 0;
int[] position = new int[bondList.size()];
int maxGroup = 1;
/*Analysis if the bond are linked together*/
List<IBond> newBondList = new ArrayList<IBond>();
newBondList.add(bondList.get(0));
int pos = 0;
for (int i = 0; i < newBondList.size(); i++) {
if (i == 0) flagBelonging[i] = maxGroup;
else {
if (flagBelonging[position[i]] == 0) {
maxGroup++;
flagBelonging[position[i]] = maxGroup;
}
}
IBond bondA = newBondList.get(i);
for (int ato = 0; ato < 2; ato++) {
IAtom atomA1 = bondA.getAtom(ato);
List<IBond> bondA1s = molecule.getConnectedBondsList(atomA1);
for (int j = 0; j < bondA1s.size(); j++) {
IBond bondB = bondA1s.get(j);
if (!newBondList.contains(bondB))
for (int k = 0; k < bondList.size(); k++)
if (bondList.get(k).equals(bondB))
if (flagBelonging[k] == 0) {
flagBelonging[k] = maxGroup;
pos++;
newBondList.add(bondB);
position[pos] = k;
}
}
}
// if it is final size and not all are added
if (newBondList.size() - 1 == i)
for (int k = 0; k < bondList.size(); k++)
if (!newBondList.contains(bondList.get(k))) {
newBondList.add(bondList.get(k));
position[i + 1] = k;
break;
}
}
/*creating containers according groups*/
for (int i = 0; i < maxGroup; i++) {
IAtomContainer container = molecule.getBuilder().newAtomContainer();
for (int j = 0; j < bondList.size(); j++) {
if (flagBelonging[j] != i + 1) continue;
IBond bond = bondList.get(j);
IAtom atomA1 = bond.getAtom(0);
IAtom atomA2 = bond.getAtom(1);
if (!container.contains(atomA1)) container.addAtom(atomA1);
if (!container.contains(atomA2)) container.addAtom(atomA2);
container.addBond(bond);
}
setOfCont.addAtomContainer(container);
}
return setOfCont;
}
@Test
public void unionMolecules() throws IOException, CDKException {
SmilesParser sp = new SmilesParser(DefaultChemObjectBuilder.getInstance());
IAtomContainer mol1 = sp.parseSmiles("OOC1=CC=CC=C1");
IAtomContainer mol2 = sp.parseSmiles("c1ccc(cc1)c2ccccc2");
int i = 0;
for (IAtom atom1 : mol1.atoms()) {
atom1.setID(String.valueOf((i++)));
}
int j = 0;
for (IAtom atom2 : mol2.atoms()) {
atom2.setID(String.valueOf((j++)));
}
MoleculeSanityCheck.aromatizeMolecule(mol1);
MoleculeSanityCheck.aromatizeMolecule(mol2);
Isomorphism isomorphism = new Isomorphism(mol1, mol2, Algorithm.DEFAULT, true, false, false);
isomorphism.setChemFilters(false, false, false);
int combinations = 1;
List<String> acSet = new ArrayList<String>();
if (isomorphism.getFirstAtomMapping() != null) {
for (AtomAtomMapping mapping : isomorphism.getAllAtomMapping()) {
IAtomContainer union = new AtomContainer();
for (IAtom atom : mol1.atoms()) {
union.addAtom(atom);
}
for (IBond bond : mol1.bonds()) {
union.addBond(bond);
}
for (IBond bond : mol2.bonds()) {
IAtom a1 = bond.getAtom(0);
IAtom a2 = bond.getAtom(1);
if (!mapping.getMappingsByAtoms().containsValue(a1)
&& !mapping.getMappingsByAtoms().containsValue(a2)) {
if (!union.contains(a1)) {
union.addAtom(a1);
}
if (!union.contains(a2)) {
union.addAtom(a2);
}
union.addBond(bond);
} else if (mapping.getMappingsByAtoms().containsValue(a1)
&& !mapping.getMappingsByAtoms().containsValue(a2)) {
if (!union.contains(a2)) {
union.addAtom(a2);
}
union.addBond(
new Bond(
a2,
getKey(a1, mapping.getMappingsByAtoms()),
bond.getOrder(),
bond.getStereo()));
} else if (!mapping.getMappingsByAtoms().containsValue(a1)
&& mapping.getMappingsByAtoms().containsValue(a2)) {
if (!union.contains(a1)) {
union.addAtom(a1);
}
union.addBond(
new Bond(
a1,
getKey(a2, mapping.getMappingsByAtoms()),
bond.getOrder(),
bond.getStereo()));
}
}
/*check if this combination is chemically valid*/
if (isChemicallyValid(union)) {
String molSMILES = getSMILES(union).toString();
if (!acSet.contains(molSMILES)) {
acSet.add(molSMILES);
}
}
}
}
// for (String container : acSet) {
// System.out.println("\n-------------" + " Combination " + combinations++ +
// "--------------------");
// System.out.println("Query SMILES " + getSMILES(mol1).toString() + ", count " +
// mol1.getAtomCount());
// System.out.println("Target SMILES " + getSMILES(mol2).toString() + ", count " +
// mol2.getAtomCount());
// System.out.println("Union SMILES " + container + ", count " +
// sp.parseSmiles(container).getAtomCount());
// }
}
@TestMethod(value = "testCalculate_IAtomContainer")
public DescriptorValue calculate(
IAtom atom, IAtomContainer atomContainer, IRingSet precalculatedringset) {
IAtomContainer varAtomContainer;
try {
varAtomContainer = (IAtomContainer) atomContainer.clone();
} catch (CloneNotSupportedException e) {
return getDummyDescriptorValue(e);
}
int atomPosition = atomContainer.getAtomNumber(atom);
IAtom clonedAtom = varAtomContainer.getAtom(atomPosition);
DoubleArrayResult rdfProtonCalculatedValues = new DoubleArrayResult(gsr_desc_length);
if (!atom.getSymbol().equals("H")) {
return getDummyDescriptorValue(new CDKException("Invalid atom specified"));
}
///////////////////////// FIRST SECTION OF MAIN METHOD: DEFINITION OF MAIN VARIABLES
///////////////////////// AND AROMATICITY AND PI-SYSTEM AND RINGS DETECTION
Molecule mol = new Molecule(varAtomContainer);
if (varAtomContainer != acold) {
acold = varAtomContainer;
// DETECTION OF pi SYSTEMS
varAtomContainerSet = ConjugatedPiSystemsDetector.detect(mol);
if (precalculatedringset == null)
try {
varRingSet = (new AllRingsFinder()).findAllRings(varAtomContainer);
} catch (CDKException e) {
return getDummyDescriptorValue(e);
}
else varRingSet = precalculatedringset;
try {
GasteigerMarsiliPartialCharges peoe = new GasteigerMarsiliPartialCharges();
peoe.assignGasteigerMarsiliSigmaPartialCharges(mol, true);
} catch (Exception ex1) {
return getDummyDescriptorValue(ex1);
}
}
if (checkAromaticity) {
try {
AtomContainerManipulator.percieveAtomTypesAndConfigureAtoms(varAtomContainer);
CDKHueckelAromaticityDetector.detectAromaticity(varAtomContainer);
} catch (CDKException e) {
return getDummyDescriptorValue(e);
}
}
IRingSet rsAtom;
Ring ring;
IRingSet ringsWithThisBond;
// SET ISINRING FLAGS FOR BONDS
Iterator<IBond> bondsInContainer = varAtomContainer.bonds().iterator();
while (bondsInContainer.hasNext()) {
IBond bond = bondsInContainer.next();
ringsWithThisBond = varRingSet.getRings(bond);
if (ringsWithThisBond.getAtomContainerCount() > 0) {
bond.setFlag(CDKConstants.ISINRING, true);
}
}
// SET ISINRING FLAGS FOR ATOMS
IRingSet ringsWithThisAtom;
for (int w = 0; w < varAtomContainer.getAtomCount(); w++) {
ringsWithThisAtom = varRingSet.getRings(varAtomContainer.getAtom(w));
if (ringsWithThisAtom.getAtomContainerCount() > 0) {
varAtomContainer.getAtom(w).setFlag(CDKConstants.ISINRING, true);
}
}
IAtomContainer detected = varAtomContainerSet.getAtomContainer(0);
// neighboors[0] is the atom joined to the target proton:
List<IAtom> neighboors = mol.getConnectedAtomsList(clonedAtom);
IAtom neighbour0 = neighboors.get(0);
// 2', 3', 4', 5', 6', and 7' atoms up to the target are detected:
List<IAtom> atomsInSecondSphere = mol.getConnectedAtomsList(neighbour0);
List<IAtom> atomsInThirdSphere;
List<IAtom> atomsInFourthSphere;
List<IAtom> atomsInFifthSphere;
List<IAtom> atomsInSixthSphere;
List<IAtom> atomsInSeventhSphere;
// SOME LISTS ARE CREATED FOR STORING OF INTERESTING ATOMS AND BONDS DURING DETECTION
ArrayList<Integer> singles = new ArrayList<Integer>(); // list of any bond not rotatable
ArrayList<Integer> doubles = new ArrayList<Integer>(); // list with only double bonds
ArrayList<Integer> atoms = new ArrayList<Integer>(); // list with all the atoms in spheres
// atoms.add( Integer.valueOf( mol.getAtomNumber(neighboors[0]) ) );
ArrayList<Integer> bondsInCycloex =
new ArrayList<Integer>(); // list for bonds in cycloexane-like rings
// 2', 3', 4', 5', 6', and 7' bonds up to the target are detected:
IBond secondBond; // (remember that first bond is proton bond)
IBond thirdBond; //
IBond fourthBond; //
IBond fifthBond; //
IBond sixthBond; //
IBond seventhBond; //
// definition of some variables used in the main FOR loop for detection of interesting atoms and
// bonds:
boolean theBondIsInA6MemberedRing; // this is like a flag for bonds which are in cycloexane-like
// rings (rings with more than 4 at.)
IBond.Order bondOrder;
int bondNumber;
int sphere;
// THIS MAIN FOR LOOP DETECT RIGID BONDS IN 7 SPHERES:
for (IAtom curAtomSecond : atomsInSecondSphere) {
secondBond = mol.getBond(neighbour0, curAtomSecond);
if (mol.getAtomNumber(curAtomSecond) != atomPosition
&& getIfBondIsNotRotatable(mol, secondBond, detected)) {
sphere = 2;
bondOrder = secondBond.getOrder();
bondNumber = mol.getBondNumber(secondBond);
theBondIsInA6MemberedRing = false;
checkAndStore(
bondNumber,
bondOrder,
singles,
doubles,
bondsInCycloex,
mol.getAtomNumber(curAtomSecond),
atoms,
sphere,
theBondIsInA6MemberedRing);
atomsInThirdSphere = mol.getConnectedAtomsList(curAtomSecond);
if (atomsInThirdSphere.size() > 0) {
for (IAtom curAtomThird : atomsInThirdSphere) {
thirdBond = mol.getBond(curAtomThird, curAtomSecond);
// IF THE ATOMS IS IN THE THIRD SPHERE AND IN A CYCLOEXANE-LIKE RING, IT IS STORED IN
// THE PROPER LIST:
if (mol.getAtomNumber(curAtomThird) != atomPosition
&& getIfBondIsNotRotatable(mol, thirdBond, detected)) {
sphere = 3;
bondOrder = thirdBond.getOrder();
bondNumber = mol.getBondNumber(thirdBond);
theBondIsInA6MemberedRing = false;
// if the bond is in a cyclohexane-like ring (a ring with 5 or more atoms, not
// aromatic)
// the boolean "theBondIsInA6MemberedRing" is set to true
if (!thirdBond.getFlag(CDKConstants.ISAROMATIC)) {
if (!curAtomThird.equals(neighbour0)) {
rsAtom = varRingSet.getRings(thirdBond);
for (int f = 0; f < rsAtom.getAtomContainerCount(); f++) {
ring = (Ring) rsAtom.getAtomContainer(f);
if (ring.getRingSize() > 4 && ring.contains(thirdBond)) {
theBondIsInA6MemberedRing = true;
}
}
}
}
checkAndStore(
bondNumber,
bondOrder,
singles,
doubles,
bondsInCycloex,
mol.getAtomNumber(curAtomThird),
atoms,
sphere,
theBondIsInA6MemberedRing);
theBondIsInA6MemberedRing = false;
atomsInFourthSphere = mol.getConnectedAtomsList(curAtomThird);
if (atomsInFourthSphere.size() > 0) {
for (IAtom curAtomFourth : atomsInFourthSphere) {
fourthBond = mol.getBond(curAtomThird, curAtomFourth);
if (mol.getAtomNumber(curAtomFourth) != atomPosition
&& getIfBondIsNotRotatable(mol, fourthBond, detected)) {
sphere = 4;
bondOrder = fourthBond.getOrder();
bondNumber = mol.getBondNumber(fourthBond);
theBondIsInA6MemberedRing = false;
checkAndStore(
bondNumber,
bondOrder,
singles,
doubles,
bondsInCycloex,
mol.getAtomNumber(curAtomFourth),
atoms,
sphere,
theBondIsInA6MemberedRing);
atomsInFifthSphere = mol.getConnectedAtomsList(curAtomFourth);
if (atomsInFifthSphere.size() > 0) {
for (IAtom curAtomFifth : atomsInFifthSphere) {
fifthBond = mol.getBond(curAtomFifth, curAtomFourth);
if (mol.getAtomNumber(curAtomFifth) != atomPosition
&& getIfBondIsNotRotatable(mol, fifthBond, detected)) {
sphere = 5;
bondOrder = fifthBond.getOrder();
bondNumber = mol.getBondNumber(fifthBond);
theBondIsInA6MemberedRing = false;
checkAndStore(
bondNumber,
bondOrder,
singles,
doubles,
bondsInCycloex,
mol.getAtomNumber(curAtomFifth),
atoms,
sphere,
theBondIsInA6MemberedRing);
atomsInSixthSphere = mol.getConnectedAtomsList(curAtomFifth);
if (atomsInSixthSphere.size() > 0) {
for (IAtom curAtomSixth : atomsInSixthSphere) {
sixthBond = mol.getBond(curAtomFifth, curAtomSixth);
if (mol.getAtomNumber(curAtomSixth) != atomPosition
&& getIfBondIsNotRotatable(mol, sixthBond, detected)) {
sphere = 6;
bondOrder = sixthBond.getOrder();
bondNumber = mol.getBondNumber(sixthBond);
theBondIsInA6MemberedRing = false;
checkAndStore(
bondNumber,
bondOrder,
singles,
doubles,
bondsInCycloex,
mol.getAtomNumber(curAtomSixth),
atoms,
sphere,
theBondIsInA6MemberedRing);
atomsInSeventhSphere = mol.getConnectedAtomsList(curAtomSixth);
if (atomsInSeventhSphere.size() > 0) {
for (IAtom curAtomSeventh : atomsInSeventhSphere) {
seventhBond = mol.getBond(curAtomSeventh, curAtomSixth);
if (mol.getAtomNumber(curAtomSeventh) != atomPosition
&& getIfBondIsNotRotatable(mol, seventhBond, detected)) {
sphere = 7;
bondOrder = seventhBond.getOrder();
bondNumber = mol.getBondNumber(seventhBond);
theBondIsInA6MemberedRing = false;
checkAndStore(
bondNumber,
bondOrder,
singles,
doubles,
bondsInCycloex,
mol.getAtomNumber(curAtomSeventh),
atoms,
sphere,
theBondIsInA6MemberedRing);
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
// Variables
double[] values; // for storage of results of other methods
double distance;
double sum;
double smooth = -20;
double partial;
int position;
double limitInf;
double limitSup;
double step;
//////////////////////// THE FOUTH DESCRIPTOR IS gS(r), WHICH TAKES INTO ACCOUNT SINGLE BONDS IN
// RIGID SYSTEMS
Vector3d a_a = new Vector3d();
Vector3d a_b = new Vector3d();
Vector3d b_a = new Vector3d();
Vector3d b_b = new Vector3d();
Point3d middlePoint = new Point3d();
double angle = 0;
if (singles.size() > 0) {
double dist0;
double dist1;
IAtom singleBondAtom0;
IAtom singleBondAtom1;
distance = 0;
position = 0;
IBond theSingleBond = null;
limitInf = 0;
limitSup = Math.PI / 2;
step = (limitSup - limitInf) / 7;
smooth = -1.15;
int counter = 0;
for (double ghs = 0; ghs < limitSup; ghs = ghs + step) {
sum = 0;
for (int sing = 0; sing < singles.size(); sing++) {
angle = 0;
partial = 0;
Integer thisSingleBond = singles.get(sing);
position = thisSingleBond;
theSingleBond = mol.getBond(position);
middlePoint = theSingleBond.get3DCenter();
singleBondAtom0 = theSingleBond.getAtom(0);
singleBondAtom1 = theSingleBond.getAtom(1);
dist0 = calculateDistanceBetweenTwoAtoms(singleBondAtom0, atom);
dist1 = calculateDistanceBetweenTwoAtoms(singleBondAtom1, atom);
a_a.set(middlePoint.x, middlePoint.y, middlePoint.z);
if (dist1 > dist0)
a_b.set(
singleBondAtom0.getPoint3d().x,
singleBondAtom0.getPoint3d().y,
singleBondAtom0.getPoint3d().z);
else
a_b.set(
singleBondAtom1.getPoint3d().x,
singleBondAtom1.getPoint3d().y,
singleBondAtom1.getPoint3d().z);
b_a.set(middlePoint.x, middlePoint.y, middlePoint.z);
b_b.set(atom.getPoint3d().x, atom.getPoint3d().y, atom.getPoint3d().z);
values = calculateDistanceBetweenAtomAndBond(atom, theSingleBond);
angle = calculateAngleBetweenTwoLines(a_a, a_b, b_a, b_b);
// System.out.println("ANGLe: "+angle+ " "+ mol.getAtomNumber(atomsInSingleBond[0]) +" "
// +mol.getAtomNumber(atomsInSingleBond[1]));
partial =
(1 / (Math.pow(values[0], 2))) * Math.exp(smooth * (Math.pow((ghs - angle), 2)));
sum += partial;
}
// gSr_function.add(new Double(sum));
rdfProtonCalculatedValues.add(sum);
logger.debug("RDF gSr prob.: " + sum + " at distance " + ghs);
counter++;
}
} else {
return getDummyDescriptorValue(new CDKException("Some error occurred. Please report"));
}
return new DescriptorValue(
getSpecification(),
getParameterNames(),
getParameters(),
rdfProtonCalculatedValues,
getDescriptorNames());
}
