Application: gvSIG desktop » gvSIG projections

package org.gvsig.geotools.proj.catalog.utils;

import java.util.Collection;

import java.util.List;

import org.opengis.metadata.Identifier;

import org.opengis.referencing.IdentifiedObject;

import org.opengis.referencing.ReferenceIdentifier;

import org.opengis.referencing.operation.ConcatenatedOperation;

import org.opengis.referencing.operation.CoordinateOperation;

import org.opengis.referencing.operation.PassThroughOperation;

import org.opengis.referencing.operation.Projection;

import org.opengis.referencing.operation.SingleOperation;

import org.opengis.referencing.operation.Transformation;

public class GtUtils {

        public static String getIdentifier(IdentifiedObject object) {

                if (object==null) {

                        return null;

                }

                for (ReferenceIdentifier id: object.getIdentifiers()) {

                        // return the first one we find

                        return id.toString();

                }

                return null;

        }

        public static String getIdentifier(Collection<? extends Identifier> identifiers) {

                if (identifiers != null) {

                        for (Identifier id: identifiers) {

                                // return the first one we find

                                return id.getCode();

                        }

                }

                return null;

        }

        public static CoordinateOperation getDefiningOperation(CoordinateOperation operation) {

                if (operation instanceof ConcatenatedOperation) {

                        List<SingleOperation> opList = ((ConcatenatedOperation) operation).getOperations();

                        for (SingleOperation singleOp: opList) {

                                if (singleOp instanceof Transformation) {

                                        return singleOp;

                                }

                        }

                        for (SingleOperation singleOp: opList) {

                                if (singleOp instanceof PassThroughOperation) {

                                        return getDefiningOperation(singleOp);

                                }

                        }

                        for (SingleOperation singleOp: opList) {

                                if (singleOp instanceof Projection) {

                                        return singleOp;

                                }

                        }

                }

                else if (operation instanceof PassThroughOperation) {

                        return getDefiningOperation(((PassThroughOperation)operation).getOperation());

                }

                return operation;

        }

}