org.pattern.api.MultiImageImporterFinder.java Source code

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Here is the source code for org.pattern.api.MultiImageImporterFinder.java

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package org.pattern.api;

import java.io.File;
import javax.activation.UnsupportedDataTypeException;
import org.apache.commons.io.FilenameUtils;
import org.openide.util.Lookup;

/**
 *
 * @author palas
 */
public class MultiImageImporterFinder {

    /**
     * Finds importer to import data from images.
     * @param file file with images.
     * @return data importer
     * @throws javax.activation.UnsupportedDataTypeException when no importer found
     */
    public static MultiImageImporter findImporter(File file) throws UnsupportedDataTypeException {
        if (file.isDirectory())
            throw new IllegalStateException("Can't find importer for a directory");
        String extension = FilenameUtils.getExtension(file.getPath());

        for (MultiImageImporter importer : Lookup.getDefault().lookupAll(MultiImageImporter.class)) {
            if (importer.isSupporting(extension)) {
                return importer;
            }
        }

        throw new UnsupportedDataTypeException("No suitable data importer found!");
    }

}