/**
* 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;
}
/**
* 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;
}
@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));
}
@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);
}
/**
* 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;
}
protected synchronized BitSet getStructureKeyBits(IAtomContainer ac) {
// quick workaround for aromatic compounds, to avoid matching non-aromatic keys
// TODO remove this when isoTester/keys processing is fixed
// isoTester is fixed, but CDK isomorphism tester still needs the workaround, should be fixed in
// CDK nightly Mar 2010
for (IBond bond : ac.bonds())
if (bond.getFlag(CDKConstants.ISAROMATIC)) {
for (IAtom a : bond.atoms()) a.setFlag(CDKConstants.ISAROMATIC, true);
// in e.g. triazole the atoms are not set as aromatics, but bonds are!
if (cleanKekuleBonds) bond.setOrder(Order.SINGLE);
}
// end of the workaround
BitSet keys = new BitSet(nKeys);
boolean res;
for (int i = 0; i < nKeys; i++) {
isoTester.setSequence(smartsQueries.get(i), sequences.get(i));
res = isoTester.hasIsomorphism(ac);
keys.set(i, res);
}
return (keys);
}
/**
* 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;
}
@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());
}
