Examples with MissingFactoryResourceException org.apache.sis.referencing.factory.MissingFactoryResourceException used on opensource projects

Example 1 with MissingFactoryResourceException

use of org.apache.sis.referencing.factory.MissingFactoryResourceException in project sis by apache.

the class CoordinateOperationRegistry method search.

/**
 * Returns operations for conversions or transformations between two coordinate reference systems.
 * This method extracts the authority code from the supplied {@code sourceCRS} and {@code targetCRS},
 * and submit them to the {@link #registry}. If no operation is found for those codes, then this method
 * returns {@code null}.
 *
 * @param  sourceCRS  source coordinate reference system.
 * @param  targetCRS  target coordinate reference system.
 * @return a coordinate operation from {@code sourceCRS} to {@code targetCRS}, or {@code null}
 *         if no such operation is explicitly defined in the underlying database.
 * @throws IllegalArgumentException if the coordinate systems are not of the same type or axes do not match.
 * @throws IncommensurableException if the units are not compatible or a unit conversion is non-linear.
 * @throws FactoryException if an error occurred while creating the operation.
 */
private List<CoordinateOperation> search(final CoordinateReferenceSystem sourceCRS, final CoordinateReferenceSystem targetCRS) throws IllegalArgumentException, IncommensurableException, FactoryException {
    final List<String> sources = findCode(sourceCRS);
    if (sources.isEmpty())
        return null;
    final List<String> targets = findCode(targetCRS);
    if (targets.isEmpty())
        return null;
    final List<CoordinateOperation> operations = new ArrayList<>();
    boolean foundDirectOperations = false;
    boolean useDeprecatedOperations = false;
    for (final String sourceID : sources) {
        for (final String targetID : targets) {
            if (sourceID.equals(targetID)) {
                /*
                     * Above check is necessary because this method may be invoked in some situations where the code
                     * are equal while the CRS are not. Such situation should be illegal, but unfortunately it still
                     * happen because many software products are not compliant with EPSG definition of axis order.
                     * In such cases we will need to compute a transform from sourceCRS to targetCRS ignoring the
                     * source and target codes. The CoordinateOperationFinder class can do that, providing that we
                     * prevent this CoordinateOperationRegistry to (legitimately) claims that the operation from
                     * sourceCode to targetCode is the identity transform.
                     */
                return null;
            }
            /*
                 * Some pairs of CRS have a lot of coordinate operations backed by datum shift grids.
                 * We do not want to load all of them until we found the right coordinate operation.
                 * The non-public Semaphores.METADATA_ONLY mechanism instructs EPSGDataAccess to
                 * instantiate DeferredCoordinateOperation instead of full coordinate operations.
                 */
            final boolean mdOnly = Semaphores.queryAndSet(Semaphores.METADATA_ONLY);
            try {
                Collection<CoordinateOperation> authoritatives;
                try {
                    authoritatives = registry.createFromCoordinateReferenceSystemCodes(sourceID, targetID);
                    final boolean inverse = Containers.isNullOrEmpty(authoritatives);
                    if (inverse) {
                        /*
                             * No operation from 'source' to 'target' available. But maybe there is an inverse operation.
                             * This is typically the case when the user wants to convert from a projected to a geographic CRS.
                             * The EPSG database usually contains transformation paths for geographic to projected CRS only.
                             */
                        if (foundDirectOperations) {
                            // Ignore inverse operations if we already have direct ones.
                            continue;
                        }
                        authoritatives = registry.createFromCoordinateReferenceSystemCodes(targetID, sourceID);
                        if (Containers.isNullOrEmpty(authoritatives)) {
                            continue;
                        }
                    } else if (!foundDirectOperations) {
                        foundDirectOperations = true;
                        // Keep only direct operations.
                        operations.clear();
                    }
                } catch (NoSuchAuthorityCodeException | MissingFactoryResourceException e) {
                    /*
                         * sourceCode or targetCode is unknown to the underlying authority factory.
                         * Ignores the exception and fallback on the generic algorithm provided by
                         * CoordinateOperationFinder.
                         */
                    log(null, e);
                    continue;
                }
                /*
                     * If we found at least one non-deprecated operation, we will stop the search at
                     * the first deprecated one (assuming that deprecated operations are sorted last).
                     * Deprecated operations are kept only if there is no non-deprecated operations.
                     */
                try {
                    for (final CoordinateOperation candidate : authoritatives) {
                        if (candidate != null) {
                            // Paranoiac check.
                            if ((candidate instanceof Deprecable) && ((Deprecable) candidate).isDeprecated()) {
                                if (!useDeprecatedOperations && !operations.isEmpty())
                                    break;
                                useDeprecatedOperations = true;
                            } else if (useDeprecatedOperations) {
                                useDeprecatedOperations = false;
                                // Replace deprecated operations by non-deprecated ones.
                                operations.clear();
                            }
                            operations.add(candidate);
                        }
                    }
                } catch (BackingStoreException exception) {
                    throw exception.unwrapOrRethrow(FactoryException.class);
                }
            } finally {
                if (!mdOnly) {
                    Semaphores.clear(Semaphores.METADATA_ONLY);
                }
            }
        }
    }
    /*
         * At this point we got the list of coordinate operations. Now, sort them in preference order.
         * We will loop over all coordinate operations and select the one having the largest intersection
         * with the area of interest. Note that if the user did not specified an area of interest himself,
         * then we need to get one from the CRS. This is necessary for preventing the transformation from
         * NAD27 to NAD83 in Idaho to select the transform for Alaska (since the later has a larger area).
         */
    CoordinateOperationSorter.sort(operations, Extents.getGeographicBoundingBox(areaOfInterest));
    final ListIterator<CoordinateOperation> it = operations.listIterator();
    while (it.hasNext()) {
        /*
             * At this point we filtered a CoordinateOperation by looking only at its metadata.
             * Code following this point will need the full coordinate operation, including its
             * MathTransform. So if we got a deferred operation, we need to resolve it now.
             * Conversely, we should not use metadata below this point because the call to
             * inverse(CoordinateOperation) is not guaranteed to preserve all metadata.
             */
        CoordinateOperation operation = it.next();
        try {
            if (operation instanceof DeferredCoordinateOperation) {
                operation = ((DeferredCoordinateOperation) operation).create();
            }
            if (operation instanceof SingleOperation && operation.getMathTransform() == null) {
                operation = fromDefiningConversion((SingleOperation) operation, foundDirectOperations ? sourceCRS : targetCRS, foundDirectOperations ? targetCRS : sourceCRS);
                if (operation == null) {
                    it.remove();
                    continue;
                }
            }
            if (!foundDirectOperations) {
                operation = inverse(operation);
            }
        } catch (NoninvertibleTransformException | MissingFactoryResourceException e) {
            /*
                 * If we failed to get the real CoordinateOperation instance, remove it from
                 * the collection and try again in order to get the next best choices.
                 */
            log(null, e);
            it.remove();
            // Try again with the next best case.
            continue;
        }
        /*
             * It is possible that the CRS given to this method were not quite right.  For example the user
             * may have created his CRS from a WKT using a different axis order than the order specified by
             * the authority and still (wrongly) call those CRS "EPSG:xxxx".  So we check if the source and
             * target CRS for the operation we just created are equivalent to the CRS specified by the user.
             *
             * NOTE: FactoryException may be thrown if we fail to create a transform from the user-provided
             * CRS to the authority-provided CRS. That transform should have been only an identity transform,
             * or a simple affine transform if the user specified wrong CRS as explained in above paragraph.
             * If we fail here, we are likely to fail for all other transforms. So we are better to let the
             * FactoryException propagate.
             */
        operation = complete(operation, sourceCRS, targetCRS);
        if (filter(operation)) {
            if (stopAtFirst) {
                operations.clear();
                operations.add(operation);
                break;
            }
            it.set(operation);
        } else {
            it.remove();
        }
    }
    return operations;
}