grails 4没有枚举常量？

Posted 2023-05-07

【中文标题】grails 4没有枚举常量？

【英文标题】：grails 4 no enum constant?

【发布时间】：2022-01-11 11:46:06

【问题描述】：

我正在将我的 grails 2 应用程序升级到 grails 4。我已经能够更正所有编译时错误，现在应用程序可以运行。它会在点击控制器操作时引发此错误。

No enum constant com.company.compositeEvent.ResultsStatus.2

在控制器的这一行

if (idList)
            result = RaceGroup.createCriteria().list([sort: 'startDateTime', order: 'asc', offset: offset, max: max])
                inList('id', idList)
                join 'address'
            
        

RaceGroup 有 resultsstatus 属性

ResultsStatus resultsStatus

ResultStatus 是一个枚举，定义为

enum ResultsStatus 

    NO_RESULTS(1),
    RACE_RESULTS(2),
    EXTERNAL_RESULTS(3)

    int id

    private ResultsStatus(int id)
        this.id = id
    

它在 grails 2 中运行良好。我怀疑 grails 4 中发生了一些变化，也许定义枚举的方式是错误的。我感谢任何指导。

更新：

RaceGroup 域定义为

class RaceGroup extends CompositeEvent implements Serializable

    List<Race> races

    static hasMany = [races: Race]
    static mappedBy = [races: 'raceGroup']

    static mapping = 
        discriminator RaceGroup.getSimpleName()
        races cascade: 'all-delete-orphan'
    

    
    static constraints = 
        
    
    
    
    
    
    List<SubEvent> getSubEvents()
        this.races
    

CompositeEvent 定义为

abstract class CompositeEvent extends BaseEntity implements Serializable, Named, Addressable


    EventGroup eventGroup


    /**
     * Currency to use for this Event. Defaults to 'USD'
     */
    final Currency currency = Currency.getInstance('USD')
    
    /**
     * User that created this event.
     */
    User user
    /**
     * Name of this overall event.
     * <p>
     * 'compositeEventName' is used instead of just 'name' because when sorting
     * by name, billingPerson.name is used by grails.
     */
    String compositeEventName
    /**
     * General Information that is entered by the director and displayed on 
     * the registration page. 
     */
    String displayMessage
    /**
     * Location name of the address of this event
     */
    String locationName
    /**
     * Address of this event.
     * <p>
     * Address is stored as one of its sub-classes: USAddress, CanadaAddress,
     * etc.
     */
    Address address

    /**
     * Start date and time of this event.
     */ 
    Date startDateTime
    
    /**
     * Time zone to display the formatted date in.
     */
    TimeZone timeZone
    
    /**
     * End date of this event.
     */
    SqlDate endDate
    
    /**
     * The total number of possible participants, number reserved spots,
     * and the number of allocated spots.
     */
    Capacity capacity = new Capacity(reference: this)


    String token = UUID.randomUUID().toString().replaceAll('-', '').take(12)

    Boolean autoTransferToV6Active


    Boolean showMaxParticipantsLimitInRegistrationPage = false
    Integer showMaxParticipantsLimitBelowThreshold



    /**
     * Director on the registration page listed as being in charge of
     * this event.
     */
    Director director

    /**
     * Person or organization responsible for handling billing and payment
     * in association with this event.
     */
    BillingPerson billingPerson



    String displayLiveRegistrationsPassword


    Boolean displayLiveRegistrations
    /**
     * Whether the list of individuals registered for this event or any of
     * its sub-events will be displayed on the registration page.
     */
    Boolean displayParticipants
    /**
     * Whether the number of individuals registered for this event or any 
     * sub-events will be displayed on the registration page.
     */
    Boolean displayEventRegNum
    /**
     * Whether the teams registered for this event or any sub-events will
     * be displayed on the registration page
     */
    Boolean displayTeams
    /**
     * Whether the number of people in each team will displayed on the
     * registration page.
     */
    Boolean displayTeamRegNum
    /**
     * Whether seed marks will be displayed in the list of participants
     */
    Boolean displaySeedMarks

    /**
     * Whether to display the product photos in the public event page
     */
    Boolean displayProductImages = true



    /**
     * Whether this event is listed among active events and can the
     * registration page can be accessed.
     */
    Boolean published = false // whether this composite event can be viewed
    Boolean unlisted = false // whether this composite event is listed on the website
    Boolean emailReceipts = true // email a receipt each time someone registers


    /**
     * The date from which age will be calculated for participants.
     * 
     * The date must be:
     * <p><i>
     * this.startDateTime - 1 year <= this.ageAsOf <= this.startDateTime
     * </i>
     */
    SqlDate ageAsOf
    /**
     * External web-site with information regarding this event
     */
    String homePage
    /**
     * Required fields of each participant that are set by the director.
     */
    RequiredParticipantFields requiredFields
    /**
     * Logo for this event
     */
    Image logo
    /**
     * Taxes applied to this event
     */
    Tax tax
    /**
     * Access code to be access registration for all subEvents. An access code
     * set in an order template would be used instead of this if both are set.
     */
    String accessCode
    /**
     * Disclaimer that must be accepted by all participants before registering.
     */
    Disclaimer disclaimer
    /**
     * TimingDetails contains data in regards to requesting and providing
     * timing services from RunnerCard
     */
    TimingDetails timingDetails
    

    //Status of Referral. Whether or not to show the referral or share on facebook button
    ReferralStatus referralStatus
    
    
    String bibsRange
    
    Boolean assignBibNumbers

    //in registration form whether to allow user to select more than 1 shirt
    Boolean allowMultiProductSelectionInRegistration


    //in event registration page show products only purchase
    Boolean enableProductsOnlyPurchase = true


    Boolean enableVirtualRace


    /**
     * Ids of past events all separated by a delimiter comma (,)
     * eg 51243, 51234, 64345, 43454
     */
    String eventHistory 
    
    
    Set<Product> products



    String resultsLink
    ResultsStatus resultsStatus


    // automatically updated by GORM
    Date dateCreated
    Date lastUpdated
    
    abstract List<SubEvent> getSubEvents()

    static transients = ['name', 'nameIdAndParticipants']

    static hasMany = [products: Product]

    //static belongsTo = [eventGroup: EventGroup]

    static mapping = 
        address cascade: 'all'
        director cascade: 'save-update,merge,refresh,evict,lock'
        displayMessage type: 'text'

        requiredFields unique: true
        capacity cascade: 'refresh,delete'

        bibsRange type: 'text'
    

    static namedQueries = 
        withAddress
            join 'address'
        
        withBilling
            join 'billingPerson'
        
        withRequiredFields
            join 'requiredFields'
        
    

    static constraints = 
        compositeEventName blank: false

        showMaxParticipantsLimitInRegistrationPage nullable: true
        showMaxParticipantsLimitBelowThreshold nullable: true

        autoTransferToV6Active nullable: true

        enableVirtualRace nullable: true
        eventGroup nullable: true

        eventHistory blank:true, nullable: true
        displayMessage blank: false, nullable: true
        locationName blank: false
        referralStatus nullable: true
        bibsRange nullable:true
        assignBibNumbers nullable: true
        allowMultiProductSelectionInRegistration nullable: true

        enableProductsOnlyPurchase nullable: true
        address()
    
        
        timeZone bindable: true, inList: TimeService.TIME_ZONES
        endDate validator:  SqlDate endDate, CompositeEvent obj ->
            if (obj.startDateTime == null) return
            Calendar start = Calendar.getInstance()
            start.setTime(obj.startDateTime)
            start.set(Calendar.HOUR_OF_DAY, 0)
            start.set(Calendar.MINUTE, 0)
            start.set(Calendar.SECOND, 0)
            start.set(Calendar.MILLISECOND, 0)
            Date startDay = start.getTime()
            DateFormat formatter = DateFormat.getDateInstance(DateFormat.SHORT, LCH.getLocale())
            if (startDay.compareTo(endDate) > 0)
                return ["default.invalid.min.message", formatter.format(startDay)]
            
        
        director validator:  Director person, CompositeEvent compositeEvent, Errors errors ->
            UtilityService.cascadeValidation(person, 'director', errors)
        
        billingPerson validator:  BillingPerson person, CompositeEvent compositeEvent, Errors errors ->
            UtilityService.cascadeValidation(person, 'billingPerson', errors)
        
        displayParticipants()
        displayEventRegNum()
        displayTeams()
        displayTeamRegNum validator: Boolean val, CompositeEvent obj, Errors errors ->
            if (obj.displayTeams != null && val && !obj.displayTeams)
                errors.rejectValue("displayTeamRegNum", "compositeEvent.invalid.displayTeamRegNum")
            
        
        displaySeedMarks()
        displayProductImages()
        published()

    
        
        homePage blank: false, nullable: true, validator:  String homePage, CompositeEvent compositeEvent ->
            // If it is a url that isn't http:// or https://
            if (compositeEvent.homePage != null
                    && !compositeEvent.homePage.matches('^http(s)?://.*')
                    && compositeEvent.errors.getFieldErrors('homePage').size() == 0)
                return "default.invalid.url.message"
            
        
        
        ageAsOf nullable: true // if null my.calculateAge() will calculate age based on the current Date
        requiredFields nullable: true
        logo nullable: true
        tax nullable: true, validator:  Tax tax, obj, Errors errors ->
            UtilityService.cascadeValidation(tax, 'tax', errors)
        
        accessCode blank: false, nullable: true
        displayLiveRegistrationsPassword nullable: true
        displayLiveRegistrations nullable: true
        resultsLink nullable: true
        resultsStatus nullable: true
        disclaimer()
        timingDetails nullable: true
    
    
    /**
     * Saves capacity of this event at initial save
     */
    void beforeInsert()
        this.capacity.save()
    
    
    void afterInsert()
        CompositeEvent.withNewSession


            def productOwnerSettingService = this.getBean("productOwnerSettingService")
            productOwnerSettingService.createSetting(this)

        
    

    /**
     * Checks that the logged in user has delete or admin privileges on 
     * this object and then deletes all AutoUpdateJob instances and acl
     * objects that reference this object.
     */
    void beforeDelete()
        CompositeEvent.withNewSession
            


            def posc = ProductOwnerSettingCompositeEvent.createCriteria().get()
                eq('event', this)
            

            def setting = posc?.productOwnerSetting

            if(posc)
                posc.delete(flush: true)
            

            if(setting) 
                setting.delete(flush: true)
            


        
        super.beforeDelete()
    
    

    
    
    private Object getBean(String beanName)
        try
            return this.domainClass.grailsApplication.mainContext.getBean(beanName)
        
        catch(NoSuchBeanDefinitionException e)
            return null
        
        catch(MissingPropertyException e)
            return null
        
    
    
    
    
    
    
    
    
    /* (non-Javadoc)
     * @see com.runnercard.Named#getName()
     */
    String getName() this.compositeEventName 
    
    void setName(String name) this.compositeEventName = name 
    

    
    

地址域定义为

abstract class Address extends BaseEntity implements Serializable
    
    String address1
    String address2
    String city
    String area
    String postalCode

    // automatically updated by GORM
    Date dateCreated
    Date lastUpdated
    
    static belongsTo = [User, BillingPerson, CompositeEvent, RaceParticipant,
        EmbeddedRaceParticipant]

    static mapping = 
        discriminator value: Address.getSimpleName(), column: 'country'
    
    
    static constraints = 
        address1 nullable: true
        address2 nullable: true
        city nullable: true
        area nullable: true
        postalCode nullable: true
    

    static List getCountries()
        return ['usa', 'can', 'other']
    
    
    boolean equals(Object obj)
        if (!Address.isInstance(obj)) return false
        
        Address other = (Address) obj
        if (this.address1 == other.address1
                && this.address2 == other.address2
                && this.city == other.city
                && this.area == other.area
                && this.postalCode == other.postalCode)
            return true
        
        else
            return false
        
    

    int hashCode()
        HashCodeBuilder builder = new HashCodeBuilder(1333, 1353)
        if (this.address1) builder.append(this.address1)
        if (this.address2) builder.append(this.address2)
        if (this.city) builder.append(this.city)
        if (this.area) builder.append(this.area)
        if (this.postalCode) builder.append(this.postalCode)
        builder.toHashCode()
    

【问题讨论】：

我无法重现该问题。您能否展示RaceGroup 的完整源代码以及address 指向的内容？

杰夫，我添加了缺少的域类。 racegroup 实际上是抽象 CompositeEvent 类的子类，地址是 CompositeEvent 的属性。感谢您的帮助。

感谢 jeff 找到了解决方案，但现在遇到了另一个问题。由于某种原因 RaceRegistration.createCriteria().list() eq('compositeEvent', raceGroup) 抛出数组越界异常。

"RaceRegistration.createCriteria().list() eq('compositeEvent', raceGroup) 抛出数组越界异常" - 你能展示RaceRegistration 类中的内容吗？ compositeEvent 指向？

如果您可以分享一个简单的小示例项目来演示该问题，那就更好了。通常只是创建它就会发现问题所在。

【参考方案1】：

问题是我必须把它放在映射中

    resultsStatus enumType: 'ordinal'