private IRenderingElement generate(IAtomContainer molecule, RendererModel model, int atomNum)
throws CDKException {
// tag the atom and bond ids
String molId = molecule.getProperty(MarkedElement.ID_KEY);
if (molId != null) {
int atomId = 0, bondid = 0;
for (IAtom atom : molecule.atoms())
setIfMissing(atom, MarkedElement.ID_KEY, molId + "atm" + ++atomId);
for (IBond bond : molecule.bonds())
setIfMissing(bond, MarkedElement.ID_KEY, molId + "bnd" + ++bondid);
}
if (annotateAtomNum) {
for (IAtom atom : molecule.atoms()) {
if (atom.getProperty(StandardGenerator.ANNOTATION_LABEL) != null)
throw new UnsupportedOperationException("Multiple annotation labels are not supported.");
atom.setProperty(StandardGenerator.ANNOTATION_LABEL, Integer.toString(atomNum++));
}
} else if (annotateAtomVal) {
for (IAtom atom : molecule.atoms()) {
if (atom.getProperty(StandardGenerator.ANNOTATION_LABEL) != null)
throw new UnsupportedOperationException("Multiple annotation labels are not supported.");
atom.setProperty(
StandardGenerator.ANNOTATION_LABEL, atom.getProperty(CDKConstants.COMMENT));
}
} else if (annotateAtomMap) {
for (IAtom atom : molecule.atoms()) {
if (atom.getProperty(StandardGenerator.ANNOTATION_LABEL) != null)
throw new UnsupportedOperationException("Multiple annotation labels are not supported.");
int mapidx = accessAtomMap(atom);
if (mapidx > 0) {
atom.setProperty(StandardGenerator.ANNOTATION_LABEL, Integer.toString(mapidx));
}
}
}
ElementGroup grp = new ElementGroup();
for (IGenerator<IAtomContainer> gen : gens) grp.add(gen.generate(molecule, model));
// cleanup
if (annotateAtomNum || annotateAtomMap) {
for (IAtom atom : molecule.atoms()) {
atom.removeProperty(StandardGenerator.ANNOTATION_LABEL);
}
}
return grp;
}
/**
* Prepare the target molecule for analysis.
*
* <p>We perform ring perception and aromaticity detection and set up the appropriate properties.
* Right now, this function is called each time we need to do a query and this is inefficient.
*
* @throws CDKException if there is a problem in ring perception or aromaticity detection, which
* is usually related to a timeout in the ring finding code.
*/
private void initializeMolecule() throws CDKException {
// Code copied from
// org.openscience.cdk.qsar.descriptors.atomic.AtomValenceDescriptor;
Map<String, Integer> valencesTable = new HashMap<String, Integer>();
valencesTable.put("H", 1);
valencesTable.put("Li", 1);
valencesTable.put("Be", 2);
valencesTable.put("B", 3);
valencesTable.put("C", 4);
valencesTable.put("N", 5);
valencesTable.put("O", 6);
valencesTable.put("F", 7);
valencesTable.put("Na", 1);
valencesTable.put("Mg", 2);
valencesTable.put("Al", 3);
valencesTable.put("Si", 4);
valencesTable.put("P", 5);
valencesTable.put("S", 6);
valencesTable.put("Cl", 7);
valencesTable.put("K", 1);
valencesTable.put("Ca", 2);
valencesTable.put("Ga", 3);
valencesTable.put("Ge", 4);
valencesTable.put("As", 5);
valencesTable.put("Se", 6);
valencesTable.put("Br", 7);
valencesTable.put("Rb", 1);
valencesTable.put("Sr", 2);
valencesTable.put("In", 3);
valencesTable.put("Sn", 4);
valencesTable.put("Sb", 5);
valencesTable.put("Te", 6);
valencesTable.put("I", 7);
valencesTable.put("Cs", 1);
valencesTable.put("Ba", 2);
valencesTable.put("Tl", 3);
valencesTable.put("Pb", 4);
valencesTable.put("Bi", 5);
valencesTable.put("Po", 6);
valencesTable.put("At", 7);
valencesTable.put("Fr", 1);
valencesTable.put("Ra", 2);
valencesTable.put("Cu", 2);
valencesTable.put("Mn", 2);
valencesTable.put("Co", 2);
// do all ring perception
AllRingsFinder arf = new AllRingsFinder();
IRingSet allRings;
try {
allRings = arf.findAllRings(atomContainer);
} catch (CDKException e) {
logger.debug(e.toString());
throw new CDKException(e.toString(), e);
}
// sets SSSR information
SSSRFinder finder = new SSSRFinder(atomContainer);
IRingSet sssr = finder.findEssentialRings();
for (IAtom atom : atomContainer.atoms()) {
// add a property to each ring atom that will be an array of
// Integers, indicating what size ring the given atom belongs to
// Add SSSR ring counts
if (allRings.contains(atom)) { // it's in a ring
atom.setFlag(CDKConstants.ISINRING, true);
// lets find which ring sets it is a part of
List<Integer> ringsizes = new ArrayList<Integer>();
IRingSet currentRings = allRings.getRings(atom);
int min = 0;
for (int i = 0; i < currentRings.getAtomContainerCount(); i++) {
int size = currentRings.getAtomContainer(i).getAtomCount();
if (min > size) min = size;
ringsizes.add(size);
}
atom.setProperty(CDKConstants.RING_SIZES, ringsizes);
atom.setProperty(CDKConstants.SMALLEST_RINGS, sssr.getRings(atom));
} else {
atom.setFlag(CDKConstants.ISINRING, false);
}
// determine how many rings bonds each atom is a part of
int hCount;
if (atom.getImplicitHydrogenCount() == CDKConstants.UNSET) hCount = 0;
else hCount = atom.getImplicitHydrogenCount();
List<IAtom> connectedAtoms = atomContainer.getConnectedAtomsList(atom);
int total = hCount + connectedAtoms.size();
for (IAtom connectedAtom : connectedAtoms) {
if (connectedAtom.getSymbol().equals("H")) {
hCount++;
}
}
atom.setProperty(CDKConstants.TOTAL_CONNECTIONS, total);
atom.setProperty(CDKConstants.TOTAL_H_COUNT, hCount);
if (valencesTable.get(atom.getSymbol()) != null) {
int formalCharge =
atom.getFormalCharge() == CDKConstants.UNSET ? 0 : atom.getFormalCharge();
atom.setValency(valencesTable.get(atom.getSymbol()) - formalCharge);
}
}
for (IBond bond : atomContainer.bonds()) {
if (allRings.getRings(bond).getAtomContainerCount() > 0) {
bond.setFlag(CDKConstants.ISINRING, true);
}
}
for (IAtom atom : atomContainer.atoms()) {
List<IAtom> connectedAtoms = atomContainer.getConnectedAtomsList(atom);
int counter = 0;
IAtom any;
for (IAtom connectedAtom : connectedAtoms) {
any = connectedAtom;
if (any.getFlag(CDKConstants.ISINRING)) {
counter++;
}
}
atom.setProperty(CDKConstants.RING_CONNECTIONS, counter);
}
// check for atomaticity
try {
AtomContainerManipulator.percieveAtomTypesAndConfigureAtoms(atomContainer);
CDKHueckelAromaticityDetector.detectAromaticity(atomContainer);
} catch (CDKException e) {
logger.debug(e.toString());
throw new CDKException(e.toString(), e);
}
}
/**
* initializes a path vector in every Atom of the given molecule
*
* @param molecule The given molecule
*/
private void initPath(IAtomContainer molecule) {
for (int i = 0; i < molecule.getAtomCount(); i++) {
IAtom atom = molecule.getAtom(i);
atom.setProperty(PATH, new ArrayList<IAtom>());
}
}
/**
* This routine is called 'getRing() in Figueras original article finds the smallest ring of which
* rootNode is part of.
*
* @param rootNode The Atom to be searched for the smallest ring it is part of
* @param molecule The molecule that contains the rootNode
* @return The smallest Ring rootnode is part of
*/
private IRing getRing(IAtom rootNode, IAtomContainer molecule) {
IAtom node, neighbor, mAtom;
List neighbors, mAtoms;
/** OKatoms is Figueras nomenclature, giving the number of atoms in the structure */
int OKatoms = molecule.getAtomCount();
/** queue for Breadth First Search of this graph */
Queue queue = new Queue();
/* Initialize a path Vector for each node */
// Vector pfad1,pfad2;
List<List<IAtom>> path = new ArrayList<List<IAtom>>(OKatoms);
List<IAtom> intersection = new ArrayList<IAtom>();
List<IAtom> ring = new ArrayList<IAtom>();
for (int f = 0; f < OKatoms; f++) {
path.set(f, new ArrayList<IAtom>());
((List<IAtom>) molecule.getAtom(f).getProperty(PATH)).clear();
}
// Initialize the queue with nodes attached to rootNode
neighbors = molecule.getConnectedAtomsList(rootNode);
for (int f = 0; f < neighbors.size(); f++) {
// if the degree of the f-st neighbor of rootNode is greater
// than zero (i.e., it has not yet been deleted from the list)
neighbor = (IAtom) neighbors.get(f);
// push the f-st node onto our FIFO queue
// after assigning rootNode as its source
queue.push(neighbor);
((List<IAtom>) neighbor.getProperty(PATH)).add(rootNode);
((List<IAtom>) neighbor.getProperty(PATH)).add(neighbor);
}
while (queue.size() > 0) {
node = (IAtom) queue.pop();
mAtoms = molecule.getConnectedAtomsList(node);
for (int f = 0; f < mAtoms.size(); f++) {
mAtom = (IAtom) mAtoms.get(f);
if (mAtom
!= ((List) node.getProperty(PATH))
.get(((List<IAtom>) node.getProperty(PATH)).size() - 2)) {
if (((List) mAtom.getProperty(PATH)).size() > 0) {
intersection =
getIntersection((List) node.getProperty(PATH), (List) mAtom.getProperty(PATH));
if (intersection.size() == 1) {
// we have found a valid ring closure
// now let's prepare the path to
// return in tempAtomSet
logger.debug("path1 ", ((List) node.getProperty(PATH)));
logger.debug("path2 ", ((List) mAtom.getProperty(PATH)));
logger.debug("rootNode ", rootNode);
logger.debug("ring ", ring);
ring = getUnion((List) node.getProperty(PATH), (List) mAtom.getProperty(PATH));
return prepareRing(ring, molecule);
}
} else {
// if path[mNumber] is null
// update the path[mNumber]
// pfad2 = (Vector)node.getProperty(PATH);
mAtom.setProperty(PATH, new ArrayList<IAtom>((List<IAtom>) node.getProperty(PATH)));
((List<IAtom>) mAtom.getProperty(PATH)).add(mAtom);
// pfad1 = (Vector)mAtom.getProperty(PATH);
// now push the node m onto the queue
queue.push(mAtom);
}
}
}
}
return null;
}
/** Recursive function to produce valid configurations for {@link #getAllConfigurations()}. */
private void findConfigurationsRecursively(
List<Integer> rGroupNumbers,
List<List<Integer>> occurrences,
List<Integer> occurIndexes,
List<Integer[]> distributions,
List<List<RGroup>> substitutes,
int level,
List<IAtomContainer> result)
throws CDKException {
if (level == rGroupNumbers.size()) {
if (!checkIfThenConditionsMet(rGroupNumbers, distributions)) return;
// Clone the root to get a scaffold to plug the substitutes into.
IAtomContainer root = this.getRootStructure();
IAtomContainer rootClone = null;
try {
rootClone = (IAtomContainer) root.clone();
} catch (CloneNotSupportedException e) {
// Abort with CDK exception
throw new CDKException("clone() failed; could not perform R-group substitution.");
}
for (int rgpIdx = 0; rgpIdx < rGroupNumbers.size(); rgpIdx++) {
int rNum = rGroupNumbers.get(rgpIdx);
int pos = 0;
List<RGroup> mapped = substitutes.get(rgpIdx);
for (RGroup substitute : mapped) {
IAtom rAtom = this.getRgroupQueryAtoms(rNum).get(pos);
if (substitute != null) {
IAtomContainer rgrpClone = null;
try {
rgrpClone = (IAtomContainer) (substitute.getGroup().clone());
} catch (CloneNotSupportedException e) {
throw new CDKException("clone() failed; could not perform R-group substitution.");
}
// root cloned, substitute cloned. These now need to be attached to each other..
rootClone.add(rgrpClone);
Map<Integer, IBond> rAttachmentPoints = this.getRootAttachmentPoints().get(rAtom);
if (rAttachmentPoints != null) {
// Loop over attachment points of the R# atom
for (int apo = 0; apo < rAttachmentPoints.size(); apo++) {
IBond bond = rAttachmentPoints.get(apo + 1);
// Check how R# is attached to bond
int whichAtomInBond = 0;
if (bond.getAtom(1).equals(rAtom)) whichAtomInBond = 1;
IAtom subsAt = null;
if (apo == 0) subsAt = substitute.getFirstAttachmentPoint();
else subsAt = substitute.getSecondAttachmentPoint();
// Do substitution with the clones
IBond cloneBond = rootClone.getBond(getBondPosition(bond, root));
if (subsAt != null) {
IAtom subsCloneAtom =
rgrpClone.getAtom(getAtomPosition(subsAt, substitute.getGroup()));
cloneBond.setAtom(subsCloneAtom, whichAtomInBond);
}
}
}
// Optional: shift substitutes 2D for easier visual checking
if (rAtom.getPoint2d() != null
&& substitute != null
&& substitute.getFirstAttachmentPoint() != null
&& substitute.getFirstAttachmentPoint().getPoint2d() != null) {
Point2d pointR = rAtom.getPoint2d();
Point2d pointC = substitute.getFirstAttachmentPoint().getPoint2d();
double xDiff = pointC.x - pointR.x;
double yDiff = pointC.y - pointR.y;
for (IAtom subAt : rgrpClone.atoms()) {
if (subAt.getPoint2d() != null) {
subAt.getPoint2d().x -= xDiff;
subAt.getPoint2d().y -= yDiff;
}
}
}
} else {
// Distribution flag is 0, this means the R# group will not be substituted.
// Any atom connected to this group should be given the defined RestH value.
IAtom discarded = rootClone.getAtom(getAtomPosition(rAtom, root));
for (IBond r0Bond : rootClone.bonds()) {
if (r0Bond.contains(discarded)) {
for (IAtom atInBond : r0Bond.atoms()) {
atInBond.setProperty(
CDKConstants.REST_H, this.getRGroupDefinitions().get(rNum).isRestH());
}
}
}
}
pos++;
}
}
// Remove R# remnants from the clone, bonds and atoms that may linger.
boolean confHasRGroupBonds = true;
while (confHasRGroupBonds) {
for (IBond cloneBond : rootClone.bonds()) {
boolean removeBond = false;
if (cloneBond.getAtom(0) instanceof IPseudoAtom
&& isValidRgroupQueryLabel(((IPseudoAtom) cloneBond.getAtom(0)).getLabel()))
removeBond = true;
else if (cloneBond.getAtom(1) instanceof IPseudoAtom
&& isValidRgroupQueryLabel(((IPseudoAtom) cloneBond.getAtom(1)).getLabel()))
removeBond = true;
if (removeBond) {
rootClone.removeBond(cloneBond);
confHasRGroupBonds = true;
break;
}
confHasRGroupBonds = false;
}
}
boolean confHasRGroupAtoms = true;
while (confHasRGroupAtoms) {
for (IAtom cloneAt : rootClone.atoms()) {
if (cloneAt instanceof IPseudoAtom)
if (isValidRgroupQueryLabel(((IPseudoAtom) cloneAt).getLabel())) {
rootClone.removeAtom(cloneAt);
confHasRGroupAtoms = true;
break;
}
confHasRGroupAtoms = false;
}
}
// Add to result list
result.add(rootClone);
} else {
for (int idx = 0; idx < occurrences.get(level).size(); idx++) {
occurIndexes.set(level, idx);
// With an occurrence picked 0..n for this level's R-group, now find
// all possible distributions (positional alternatives).
int occurrence = occurrences.get(level).get(idx);
int positions = this.getRgroupQueryAtoms(rGroupNumbers.get(level)).size();
Integer[] candidate = new Integer[positions];
for (int j = 0; j < candidate.length; j++) {
candidate[j] = 0;
}
List<Integer[]> rgrpDistributions = new ArrayList<Integer[]>();
findDistributions(occurrence, candidate, rgrpDistributions, 0);
for (Integer[] distribution : rgrpDistributions) {
distributions.set(level, distribution);
RGroup[] mapping = new RGroup[distribution.length];
List<List<RGroup>> mappedSubstitutes = new ArrayList<List<RGroup>>();
mapSubstitutes(
this.getRGroupDefinitions().get(rGroupNumbers.get(level)),
0,
distribution,
mapping,
mappedSubstitutes);
for (List<RGroup> mappings : mappedSubstitutes) {
substitutes.set(level, mappings);
findConfigurationsRecursively(
rGroupNumbers,
occurrences,
occurIndexes,
distributions,
substitutes,
level + 1,
result);
}
}
}
}
}
/**
* Procedure required by the CDOInterface. This function is only supposed to be called by the JCFL
* library
*/
public void setObjectProperty(String objectType, String propertyType, String propertyValue) {
logger.debug("objectType: " + objectType);
logger.debug("propType: " + propertyType);
logger.debug("property: " + propertyValue);
if (objectType == null) {
logger.error("Cannot add property for null object");
return;
}
if (propertyType == null) {
logger.error("Cannot add property for null property type");
return;
}
if (propertyValue == null) {
logger.warn("Will not add null property");
return;
}
if (objectType.equals("Molecule")) {
if (propertyType.equals("id")) {
currentMolecule.setID(propertyValue);
} else if (propertyType.equals("inchi")) {
currentMolecule.setProperty("iupac.nist.chemical.identifier", propertyValue);
}
} else if (objectType.equals("PseudoAtom")) {
if (propertyType.equals("label")) {
if (!(currentAtom instanceof IPseudoAtom)) {
currentAtom = builder.newPseudoAtom(currentAtom);
}
((IPseudoAtom) currentAtom).setLabel(propertyValue);
}
} else if (objectType.equals("Atom")) {
if (propertyType.equals("type")) {
if (propertyValue.equals("R") && !(currentAtom instanceof IPseudoAtom)) {
currentAtom = builder.newPseudoAtom(currentAtom);
}
currentAtom.setSymbol(propertyValue);
} else if (propertyType.equals("x2")) {
Point2d coord = currentAtom.getPoint2d();
if (coord == null) coord = new Point2d();
coord.x = Double.parseDouble(propertyValue);
currentAtom.setPoint2d(coord);
} else if (propertyType.equals("y2")) {
Point2d coord = currentAtom.getPoint2d();
if (coord == null) coord = new Point2d();
coord.y = Double.parseDouble(propertyValue);
currentAtom.setPoint2d(coord);
} else if (propertyType.equals("x3")) {
Point3d coord = currentAtom.getPoint3d();
if (coord == null) coord = new Point3d();
coord.x = Double.parseDouble(propertyValue);
currentAtom.setPoint3d(coord);
} else if (propertyType.equals("y3")) {
Point3d coord = currentAtom.getPoint3d();
if (coord == null) coord = new Point3d();
coord.y = Double.parseDouble(propertyValue);
currentAtom.setPoint3d(coord);
} else if (propertyType.equals("z3")) {
Point3d coord = currentAtom.getPoint3d();
if (coord == null) coord = new Point3d();
coord.z = Double.parseDouble(propertyValue);
currentAtom.setPoint3d(coord);
} else if (propertyType.equals("xFract")) {
Point3d coord = currentAtom.getFractionalPoint3d();
if (coord == null) coord = new Point3d();
coord.x = Double.parseDouble(propertyValue);
currentAtom.setFractionalPoint3d(coord);
} else if (propertyType.equals("yFract")) {
Point3d coord = currentAtom.getFractionalPoint3d();
if (coord == null) coord = new Point3d();
coord.y = Double.parseDouble(propertyValue);
currentAtom.setFractionalPoint3d(coord);
} else if (propertyType.equals("zFract")) {
Point3d coord = currentAtom.getFractionalPoint3d();
if (coord == null) coord = new Point3d();
coord.z = Double.parseDouble(propertyValue);
currentAtom.setFractionalPoint3d(coord);
} else if (propertyType.equals("formalCharge")) {
currentAtom.setFormalCharge(Integer.parseInt(propertyValue));
} else if (propertyType.equals("charge") || propertyType.equals("partialCharge")) {
currentAtom.setCharge(Double.parseDouble(propertyValue));
} else if (propertyType.equals("hydrogenCount")) {
currentAtom.setHydrogenCount(Integer.parseInt(propertyValue));
} else if (propertyType.equals("dictRef")) {
currentAtom.setProperty("org.openscience.cdk.dict", propertyValue);
} else if (propertyType.equals("atomicNumber")) {
currentAtom.setAtomicNumber(Integer.parseInt(propertyValue));
} else if (propertyType.equals("massNumber")) {
currentAtom.setMassNumber((int) Double.parseDouble(propertyValue));
} else if (propertyType.equals("id")) {
logger.debug("id: ", propertyValue);
currentAtom.setID(propertyValue);
atomEnumeration.put(propertyValue, numberOfAtoms);
}
} else if (objectType.equals("Bond")) {
if (propertyType.equals("atom1")) {
bond_a1 = Integer.parseInt(propertyValue);
} else if (propertyType.equals("atom2")) {
bond_a2 = Integer.parseInt(propertyValue);
} else if (propertyType.equals("id")) {
logger.debug("id: " + propertyValue);
bond_id = propertyValue;
} else if (propertyType.equals("order")) {
try {
Double order = Double.parseDouble(propertyValue);
if (order == 1.0) {
bond_order = IBond.Order.SINGLE;
} else if (order == 2.0) {
bond_order = IBond.Order.DOUBLE;
} else if (order == 3.0) {
bond_order = IBond.Order.TRIPLE;
} else if (order == 4.0) {
bond_order = IBond.Order.QUADRUPLE;
} else {
bond_order = IBond.Order.SINGLE;
}
} catch (Exception e) {
logger.error("Cannot convert to double: " + propertyValue);
bond_order = IBond.Order.SINGLE;
}
} else if (propertyType.equals("stereo")) {
if (propertyValue.equals("H")) {
bond_stereo = CDKConstants.STEREO_BOND_DOWN;
} else if (propertyValue.equals("W")) {
bond_stereo = CDKConstants.STEREO_BOND_UP;
}
}
}
logger.debug("Object property set...");
}
/**
* 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;
}
