MichaelAstreiko

import com.google.zxing.MultiFormatWriter
import com.google.zxing.client.j2se.MatrixToImageWriter
import com.google.zxing.common.BitMatrix
import com.google.zxing.BarcodeFormat
import com.google.zxing.EncodeHintType

/**
 * @author Michael Astreiko
 */
class BarCodeRendererService {

MichaelAstreiko

BarcodeFormat format = BarcodeFormat.valueOf(params.format)
File file = File.createTempFile("temp-barcode", "png")
barCodeRendererService.renderImageToFile(file, params.data, getSize(params.width), getSize(params.height), format)

MichaelAstreiko

def user = User.get(params.id)

render(contentType:'text/json'){
  user{
    username(user.username)
    birthday(user.birthday)
    firstName(user.firstName)
    lastName(user.lastName)
    city(user.city)
....

MichaelAstreiko

"/api/${domainInPlural}"(controller: 'apiJsonRest', action:'list')

MichaelAstreiko

def list = {
    def domainNameInPluralForm = params.domainInPlural
    def domainName = retrieveDomainName(domainNameInPluralForm)
    def entity = grailsApplication.getArtefacts("Domain").find {
        it.getShortName() == domainName
    }?.clazz

    def result = entity.list(params)
    def converter = [domainNameInPluralForm:result] as JSON
    

MichaelAstreiko

class SimpleDomainClassMarshaller extends DomainClassMarshaller {
    protected static final Log log = LogFactory.getLog(BaseDomainClassMarshaller.class)
    protected ProxyHandler proxyHandler

    private static List SKIPPED_FIELDS = Arrays.asList("lastUpdated", "dateCreated", "createdBy", "class", "id");

    public SimpleDomainClassMarshaller() {
        this(false, new HibernateProxyHandler());
    }

MichaelAstreiko

class UserClassMarshaller extends SimpleDomainClassMarshaller {
    private Map ALTERNATIVE_NAMES = ["username":"screenName"]

    protected List getSkippedFields() {
        return ["password", "email", "enabled", "accountExpired", "accountLocked",
            "passwordExpired", "securityQuestion", "securityAnswer"]
    }

    protected String getAlternativeName(String originalName){
        return ALTERNATIVE_NAMES[originalName]

MichaelAstreiko

JSON.registerObjectMarshaller(new UserClassMarshaller(), 155)
JSON.registerObjectMarshaller(new SimpleDomainClassMarshaller(), 150)

MichaelAstreiko

    properties {
        /** The maximum number of active connections that can be allocated from
         * this pool at the same time, or zero for no limit.
         * Make it '-1' to prevent performance problems with idle connections
         */
        maxActive = -1
        /**
         * The maximum number of active connections that can remain idle in the
         * pool, without extra ones being released, or zero for no limit.
         */

MichaelAstreiko

    double EARTH_RADIUS = 6371
    /**
     * Calculate distance based on Haversine algorithmus
     * (thanks to http://www.movable-type.co.uk/scripts/latlong.html)
     *
     * @param latitudeFrom
     * @param longitudeFrom
     * @param latitudeTo
     * @param longitudeTo
     * @return distance in Kilometers