source: trunk/grails-app/controllers/dbnp/importer/ImporterController.groovy @ 215

/**
 * Importer controller
 *
 * The importer controller handles the uploading of tabular, comma delimited and Excel format
 * based files. When uploaded a preview is shown of the data and the user can adjust the column
 * type. Data in cells which don't correspond to the specified column type will be represented as "#error".
 *
 * The importer controller catches the actions and consecutively performs the
 * logic behind it.
 *
 * @package     importer
 * @author      t.w.abma@umcutrecht.nl
 * @since       20100126
 *
 * Revision information:
 * $Rev: 215 $
 * $Author: tabma $
 * $Date: 2010-02-26 11:26:29 +0000 (vr, 26 feb 2010) $
 */

package dbnp.importer
import org.apache.poi.hssf.usermodel.HSSFCell
import org.apache.poi.ss.usermodel.DataFormatter
import dbnp.studycapturing.Template

class ImporterController {
    def ImporterService

    /**
     * Default page
     **/
    def index = { 
        [templates:Template.list()]
    }

    /**
    * This method will move the uploaded file to a temporary path and send the header
    * and the first n rows to the preview
    * @param importfile uploaded file to import
    */
    def upload = {
        def downloadedfile = request.getFile('importfile');
        def tempfile = new File(System.getProperty('java.io.tmpdir') + File.separatorChar + System.currentTimeMillis() + ".nmcdsp")
        downloadedfile.transferTo(tempfile)
        
        def wb = ImporterService.getWorkbook(new FileInputStream(tempfile))
        
        def header = ImporterService.getHeader(wb, 0)
        def datamatrix= ImporterService.getDatamatrix(wb, 0, 5)

        session.header = header
        session.importtemplate_id = params.template_id

        render (view:"step1", model:[header:header, datamatrix:datamatrix])

    }

    /**
    * User has assigned all entities to the columns and continues to the next step (assigning properties to columns)
    *
    * @param entity list of entities
    * @return properties page
    */
    def savepreview = { 
        def entities  = request.getParameterValues("entity")

        // currently only one template is used for all entities
        // TODO: show template fields per entity
        
        def templates = Template.get(session.importtemplate_id)

        render(view:"step2", model:[entities:entities, header:session.header, templates:templates])
    }
}