Search code examples
androidandroid-studiokotlinrealm

Realm Suddenly started generating compile errors in a code that was working with no problem _ClassNameRealmProxy

I'm creating a very simple project (first time using kotlin), My project was working perfectly however after I moved my kotlin classes from test to main, Realm started to generate lots of errors, now its 2 days I'm struggling with it with no luck.

I tried using Realm 6.0.2 instead of Beta 7.0.0 and same errors.

I created a new project I added only realm and created the two RealmObject classes (without touching anything else in the default project) and I'm still getting the same error. I'm really getting crazy at this point. what I don't really understans why does realm put . before class names, class names can not start with .

There are lots of quesions and answers about the error illegal start of type pulbic class... and all were suggesting that they have some code directly inside a class and not in a method and when I have look at their questions that was the case for all of them, but that is not the case with me. This is a brand new project that I have added only the 2 classes.

here is the my classes (the only thing I have added to the project):

@RealmClass
open class Deck  (
    @PrimaryKey
    var Id: Int = 0,
    var Name: String = "",
    var _name: String = "",
    var Color: Int = 0,
    var Cards: RealmList<Card> = RealmList()
): RealmObject()

@RealmClass
open class Card  (
    @PrimaryKey
    open var Id: Int = 0,
    open var FrontText: String = "",
    open var BackText: String = "",
    open var Image: String = "",
    open var Correct: Int = 0,
    open var Incorrect: Int = 0
): RealmObject()

And here is the error: enter image description here

C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:37: error: illegal start of type public class _CardRealmProxy extends .Card ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:37: error: expected public class _CardRealmProxy extends .Card ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:38: error: expected implements RealmObjectProxy, _CardRealmProxyInterface { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:38: error: ';' expected implements RealmObjectProxy, _CardRealmProxyInterface { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:40: error: illegal start of expression static final class CardColumnInfo extends ColumnInfo { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:85: error: illegal start of expression private static final OsObjectSchemaInfo expectedObjectSchemaInfo = createExpectedObjectSchemaInfo(); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:85: error: illegal start of expression private static final OsObjectSchemaInfo expectedObjectSchemaInfo = createExpectedObjectSchemaInfo(); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:85: error: ';' expected private static final OsObjectSchemaInfo expectedObjectSchemaInfo = createExpectedObjectSchemaInfo(); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:87: error: illegal start of expression private CardColumnInfo columnInfo; ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:88: error: illegal start of expression private ProxyState<.Card> proxyState; ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:88: error: illegal start of type private ProxyState<.Card> proxyState; ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:88: error: ';' expected private ProxyState<.Card> proxyState; ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:88: error: not a statement private ProxyState<.Card> proxyState; ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:90: error: ';' expected _CardRealmProxy() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:95: error: ';' expected public void realm$injectObjectContext() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:101: error: illegal start of type this.proxyState = new ProxyState<.Card>(this); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:101: error: '(' or '[' expected this.proxyState = new ProxyState<.Card>(this); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:110: error: ';' expected public int realmGet$Id() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:116: error: ';' expected public void realmSet$Id(int value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:116: error: ';' expected public void realmSet$Id(int value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:128: error: ';' expected public String realmGet$FrontText() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:134: error: ';' expected public void realmSet$FrontText(String value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:134: error: ';' expected public void realmSet$FrontText(String value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:156: error: ';' expected public String realmGet$BackText() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:162: error: ';' expected public void realmSet$BackText(String value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:162: error: ';' expected public void realmSet$BackText(String value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:184: error: ';' expected public String realmGet$Image() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:190: error: ';' expected public void realmSet$Image(String value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:190: error: ';' expected public void realmSet$Image(String value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:212: error: ';' expected public int realmGet$Correct() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:218: error: ';' expected public void realmSet$Correct(int value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:218: error: ';' expected public void realmSet$Correct(int value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:234: error: ';' expected public int realmGet$Incorrect() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:240: error: ';' expected public void realmSet$Incorrect(int value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:240: error: ';' expected public void realmSet$Incorrect(int value) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:254: error: illegal start of expression private static OsObjectSchemaInfo createExpectedObjectSchemaInfo() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:254: error: illegal start of expression private static OsObjectSchemaInfo createExpectedObjectSchemaInfo() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:254: error: ';' expected private static OsObjectSchemaInfo createExpectedObjectSchemaInfo() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:254: error: ';' expected private static OsObjectSchemaInfo createExpectedObjectSchemaInfo() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:265: error: illegal start of expression public static OsObjectSchemaInfo getExpectedObjectSchemaInfo() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:265: error: illegal start of expression public static OsObjectSchemaInfo getExpectedObjectSchemaInfo() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:265: error: ';' expected public static OsObjectSchemaInfo getExpectedObjectSchemaInfo() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:265: error: ';' expected public static OsObjectSchemaInfo getExpectedObjectSchemaInfo() { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:269: error: illegal start of expression public static CardColumnInfo createColumnInfo(OsSchemaInfo schemaInfo) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:269: error: illegal start of expression public static CardColumnInfo createColumnInfo(OsSchemaInfo schemaInfo) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:269: error: ';' expected public static CardColumnInfo createColumnInfo(OsSchemaInfo schemaInfo) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:269: error: ')' expected public static CardColumnInfo createColumnInfo(OsSchemaInfo schemaInfo) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:269: error: illegal start of expression public static CardColumnInfo createColumnInfo(OsSchemaInfo schemaInfo) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:269: error: ';' expected public static CardColumnInfo createColumnInfo(OsSchemaInfo schemaInfo) { ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:282: error: illegal start of type public static .Card createOrUpdateUsingJsonObject(Realm realm, JSONObject json, boolean update) ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:282: error: ';' expected public static .Card createOrUpdateUsingJsonObject(Realm realm, JSONObject json, boolean update) ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:282: error: invalid method declaration; return type required public static .Card createOrUpdateUsingJsonObject(Realm realm, JSONObject json, boolean update) ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:285: error: illegal start of expression .Card obj = null; ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:287: error: illegal start of expression Table table = realm.getTable(.Card.class); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:287: error: ';' expected Table table = realm.getTable(.Card.class); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:287: error: illegal start of expression Table table = realm.getTable(.Card.class); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:287: error: ';' expected Table table = realm.getTable(.Card.class); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:287: error: illegal start of expression Table table = realm.getTable(.Card.class); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:288: error: illegal start of expression CardColumnInfo columnInfo = (CardColumnInfo) realm.getSchema().getColumnInfo(.Card.class); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:288: error: ';' expected CardColumnInfo columnInfo = (CardColumnInfo) realm.getSchema().getColumnInfo(.Card.class); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:288: error: illegal start of expression CardColumnInfo columnInfo = (CardColumnInfo) realm.getSchema().getColumnInfo(.Card.class); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:288: error: ';' expected CardColumnInfo columnInfo = (CardColumnInfo) realm.getSchema().getColumnInfo(.Card.class); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:288: error: illegal start of expression CardColumnInfo columnInfo = (CardColumnInfo) realm.getSchema().getColumnInfo(.Card.class); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:297: error: illegal start of expression objectContext.set(realm, table.getUncheckedRow(rowIndex), realm.getSchema().getColumnInfo(.Card.class), false, Collections. emptyList()); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:297: error: ')' expected objectContext.set(realm, table.getUncheckedRow(rowIndex), realm.getSchema().getColumnInfo(.Card.class), false, Collections. emptyList()); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:297: error: expected objectContext.set(realm, table.getUncheckedRow(rowIndex), realm.getSchema().getColumnInfo(.Card.class), false, Collections. emptyList()); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:297: error: not a statement objectContext.set(realm, table.getUncheckedRow(rowIndex), realm.getSchema().getColumnInfo(.Card.class), false, Collections. emptyList()); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:297: error: illegal start of expression objectContext.set(realm, table.getUncheckedRow(rowIndex), realm.getSchema().getColumnInfo(.Card.class), false, Collections. emptyList()); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:297: error: ';' expected objectContext.set(realm, table.getUncheckedRow(rowIndex), realm.getSchema().getColumnInfo(.Card.class), false, Collections. emptyList()); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:297: error: not a statement objectContext.set(realm, table.getUncheckedRow(rowIndex), realm.getSchema().getColumnInfo(.Card.class), false, Collections. emptyList()); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:297: error: ';' expected objectContext.set(realm, table.getUncheckedRow(rowIndex), realm.getSchema().getColumnInfo(.Card.class), false, Collections. emptyList()); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:297: error: ';' expected objectContext.set(realm, table.getUncheckedRow(rowIndex), realm.getSchema().getColumnInfo(.Card.class), false, Collections. emptyList()); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:307: error: illegal start of expression obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, null, true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:307: error: ';' expected obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, null, true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:307: error: illegal start of expression obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, null, true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:307: error: ';' expected obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, null, true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:307: error: illegal start of expression obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, null, true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:307: error: ';' expected obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, null, true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:307: error: illegal start of expression obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, null, true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:307: error: ';' expected obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, null, true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:307: error: illegal start of expression obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, null, true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:307: error: ';' expected obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, null, true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:309: error: illegal start of expression obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, json.getInt("Id"), true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:309: error: ';' expected obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, json.getInt("Id"), true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:309: error: illegal start of expression obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, json.getInt("Id"), true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:309: error: ';' expected obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, json.getInt("Id"), true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:309: error: illegal start of expression obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, json.getInt("Id"), true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:309: error: ';' expected obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, json.getInt("Id"), true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:309: error: ';' expected obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, json.getInt("Id"), true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:309: error: not a statement obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, json.getInt("Id"), true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:309: error: ';' expected obj = (io.realm._CardRealmProxy) realm.createObjectInternal(.Card.class, json.getInt("Id"), true, excludeFields); ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:357: error: illegal start of type public static .Card createUsingJsonStream(Realm realm, JsonReader reader) ^C:\Users\Username\AndroidStudioProjects\FlashCards2\app\build\generated\source\kapt\debug\io\realm_CardRealmProxy.java:357: error: ';' expected public static .Card createUsingJsonStream(Realm realm, JsonReader reader)

Solution

  • It was because I had not imported the package name (my own application package name) in the entity classes. adding the import solved the problem.