GWT Update to 2.8.2

dinesh kumar

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Jun 5, 2018, 2:57:44 AM6/5/18

to GWT Users

I have updated to GWT 2.8.2 and getting a compilation error :

Compilation unit 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/shared/impl/cldr/DateTimeFormatInfoImpl_se.java' is removed due to invalid reference(s):

[java] java.lang.String

[java] Compilation unit 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/constants/NumberConstants.java' is removed due to invalid reference(s):

[java] java.lang.String

[java] Compilation unit 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/dom/builder/client/DomMediaBuilderBase.java' is removed due to invalid reference(s):

[java] java.lang.String

[java] Compilation unit 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/shared/impl/cldr/DateTimeFormatInfoImpl_lkt.java' is removed due to invalid reference(s):

[java] java.lang.String

[java] Compilation unit 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/impl/cldr/DateTimeFormatInfoImpl_jgo.java' is removed due to invalid reference(s):

[java] java.lang.String

.

..

[ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Object.java'

[java] [ERROR] java.lang.Throwable cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/core/client/JavaScriptObject.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Throwable.java'

[java] [ERROR] java.io.PrintStream cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Class.java'

[java] [ERROR] com.google.gwt.core.client.JavaScriptObject cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/String.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/CloneNotSupportedException.java'

[java] [ERROR] java.lang.Exception cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/PrintStream.java'

[java] [ERROR] java.io.FilterOutputStream cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/io/PrintWriter.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/StackTraceElement.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/ClassNotFoundException.java'

[java] [ERROR] java.lang.Exception cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/reflect/Method.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/CharSequence.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Iterable.java'

[java] [ERROR] java.util.Spliterator cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/javaemul/internal/NativeRegExp.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/nio/charset/Charset.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/StringBuffer.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/util/Locale.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/StringBuilder.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Comparator.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/UnsupportedEncodingException.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Exception.java'

[java] [ERROR] java.lang.Throwable cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/OutputStream.java'

[java] [ERROR] java.io.IOException cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/FilterOutputStream.java'

[java] [ERROR] Line 74: The constructor IOException(Throwable) is undefined

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/IntStream.java'

[java] [ERROR] java.util.OptionalDouble cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Spliterator.java'

[java] [ERROR] java.util.Comparator cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/SortedMap.java'

[java] [ERROR] java.util.Comparator cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/AbstractStringBuilder.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/LocaleInfo.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwtx-1.5.2.jar!/com/googlecode/gwtx/java/io/emul/java/io/IOException.java'

[java] [ERROR] java.lang.Exception cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwtx-1.5.2.jar!/com/googlecode/gwtx/java/io/emul/java/io/Closeable.java'

[java] [ERROR] java.io.IOException cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwtx-1.5.2.jar!/com/googlecode/gwtx/java/io/emul/java/io/Flushable.java'

[java] [ERROR] java.io.IOException cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/LongStream.java'

[java] [ERROR] java.util.OptionalDouble cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/OptionalDouble.java'

[java] [ERROR] java.lang.Throwable cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Integer.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/OptionalInt.java'

[java] [ERROR] java.lang.Throwable cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/DoubleStream.java'

[java] [ERROR] java.util.OptionalDouble cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/Stream.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/BaseStream.java'

[java] [ERROR] java.lang.AutoCloseable cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/IntSummaryStatistics.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Double.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Long.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Map.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Appendable.java'

[java] [ERROR] java.io.IOException cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/DateTimeFormatInfo.java'

[java] [ERROR] com.google.gwt.i18n.shared.DateTimeFormatInfo cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/LocalizedNames.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/constants/DateTimeConstants.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/com/google/gwt/i18n/client/impl/LocaleInfoImpl.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/constants/NumberConstants.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/OptionalLong.java'

[java] [ERROR] java.lang.Throwable cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/LongSummaryStatistics.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/NumberFormatException.java'

[java] [ERROR] java.lang.IllegalArgumentException cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Number.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/DoubleSummaryStatistics.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/function/Predicate.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/function/BinaryOperator.java'

[java] [ERROR] java.util.Comparator cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Optional.java'

[java] [ERROR] java.lang.Throwable cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/Collector.java'

[java] [ERROR] java.util.Set cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/AutoCloseable.java'

[java] [ERROR] java.lang.Exception cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Collection.java'

[java] [ERROR] java.lang.Object cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Set.java'

[java] [ERROR] java.util.Collection cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/shared/DateTimeFormatInfo.java'

[java] [ERROR] java.lang.String cannot be resolved to a type

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/IllegalArgumentException.java'

[java] [ERROR] java.lang.Throwable cannot be resolved to a type

Thomas Broyer

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Jun 5, 2018, 4:38:36 AM6/5/18

to GWT Users

On Tuesday, June 5, 2018 at 8:57:44 AM UTC+2, dinesh kumar wrote:

I have updated to GWT 2.8.2 and getting a compilation error :

Compilation unit 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/shared/impl/cldr/DateTimeFormatInfoImpl_se.java' is removed due to invalid reference(s):
[java] java.lang.String
[java] Compilation unit 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/constants/NumberConstants.java' is removed due to invalid reference(s):
[java] java.lang.String
[java] Compilation unit 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/dom/builder/client/DomMediaBuilderBase.java' is removed due to invalid reference(s):
[java] java.lang.String
[java] Compilation unit 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/shared/impl/cldr/DateTimeFormatInfoImpl_lkt.java' is removed due to invalid reference(s):
[java] java.lang.String
[java] Compilation unit 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/impl/cldr/DateTimeFormatInfoImpl_jgo.java' is removed due to invalid reference(s):
[java] java.lang.String

.
.
.
..
[ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Object.java'
[java] [ERROR] java.lang.Throwable cannot be resolved to a type
[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/core/client/JavaScriptObject.java'
[java] [ERROR] java.lang.Object cannot be resolved to a type

Have you cleaned your .gwt-unitCache? IIRC that might be a reason.

dinesh kumar

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Jun 5, 2018, 4:53:08 AM6/5/18

to GWT Users

Yes, still getting same error.

Colin Alworth

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Jun 6, 2018, 10:23:12 PM6/6/18

to GWT Users

The error that looks like it might be the source of the problems is this one:

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/FilterOutputStream.java'

[java] [ERROR] Line 74: The constructor IOException(Throwable) is undefined

But that constructor has been in there (and public) since 2008.

Then, when I look at the error for the IOException.java file, I see that the path to the class is different:

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwtx-1.5.2.jar!/com/googlecode/gwtx/java/io/emul/java/io/IOException.java'

What is gwtx-1.5.2? Is it defining IOException differently than GWT itself expects?

I also see a jar named CoreGWT-src.jar, which apparently contains java.lang.Object, meaning it isn't in gwt-user.jar where we would expect to see it. What version of GWT did you use before 2.8.2, and are you expecting that these other jars replace core GWT functionality? Perhaps they also need an update to work with GWT 2.8.2?

I am finding https://code.google.com/archive/p/gwtx/#! when searching for gwtx, but that was designed to work with GWT 1.5.2 or so, which also came out in 2008 (roughly the same time as IOException getting that missing constructor added). Perhaps you are trying to upgrade a project in one shot from 1.x to 2.8.2? If so, ten years of missed updates is likely going to require that you double check all of your other project jars and make sure they are up to date (or in the case of gwtx, probably remove them entirely).

dinesh kumar

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Jun 7, 2018, 9:07:23 AM6/7/18

to GWT Users

I have emulated few of the classes for example : java.util.Locale

But now all my code is always referring to this class instead of jre library. How and where can we specify where to look for?

Colin Alworth

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Jun 7, 2018, 9:41:02 AM6/7/18

to GWT Users

The errors you are getting aren't related to your Locale supersource (or at least not directly), but to the fact that your project has conflicting JRE sources which don't make sense, and so cannot be compiled. Your version of "gwtx" cannot be used with any version of GWT released within the last 9 years or so.

The first set of errors in your log, from GWT's internal i18n/etc, are the same error you are going to get from every type in your entire application, because java.lang.Object is broken in your project:

[ERROR] java.lang.Object cannot be resolved to a type

Searching for Object.java shows us the root cause:

[ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Object.java'
[java] [ERROR] java.lang.Throwable cannot be resolved to a type

And in turn, searching for Throwable.java...

[java] [ERROR] Errors in 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Throwable.java'
[java] [ERROR] java.io.PrintStream cannot be resolved to a type

...

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/PrintStream.java'

[java] [ERROR] java.io.FilterOutputStream cannot be resolved to a type

And finally

[java] [ERROR] Errors in 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/FilterOutputStream.java'

[java] [ERROR] Line 74: The constructor IOException(Throwable) is undefined

which by itself appears crazy, until you see where IOException comes from: 'jar:file:/opt/wnc/3rdPartyJars/lib/gwtx-1.5.2.jar!/com/googlecode/gwtx/java/io/emul/java/io/IOException.java'.

Since GoogleCode is long dead, we can't see the sources there, but you can see them in some exported github projects, such as https://github.com/ttt43ttt/gwtx/blob/master/src/main/java/gwtx/java/io/emul/java/io/IOException.java. You can see there that gwtx is missing this constructor, but GWT 2.8.2 correctly has it (see https://gwt.googlesource.com/gwt/+/2.8.2/user/super/com/google/gwt/emul/java/io/IOException.java#37).

This is the root issue - IOException is redefined in gwtx, and is incompatible with "modern" (i.e. less than 9 years old) gwt-user.jar. Fix this, and these other resulting issues should go away (though there may be more issues if you do not entirely remove gwtx.jar, and possibly also CoreGWT-src.jar as well, but I cannot say without actually seeing the sources inside).

dinesh kumar

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Jun 12, 2018, 4:13:13 AM6/12/18

to GWT Users

I was able to compile my code using latest GWT library.

However while running, my i-frame does not load in the browser and following error displays on the browser console:

Tue Jun 12 13:41:26 GMT+530 2018 com.google.gwt.logging.client.LogConfiguration

SEVERE: null

java.lang.ClassCastException

at Unknown.Throwable_0(Throwable.java:67)

at Unknown.Exception_0(Exception.java:29)

at Unknown.RuntimeException_0(RuntimeException.java:29)

at Unknown.ClassCastException_0(ClassCastException.java:27)

at Unknown.checkCriticalType(InternalPreconditions.java:154)

at Unknown.throwClassCastExceptionUnlessNull(InternalPreconditions.java:138)

at Unknown.init_9(com_00046ptc_00046windchill_00046wncgwt_00046WncGWTdebug__EntryMethodHolder.java:3)

at Unknown.initializeModules(ModuleUtils.java:44)

at Unknown.apply_0(Impl.java:309)

at Unknown.entry0_0(Impl.java:368)

at Unknown.anonymous(Impl.java:78)

at Unknown.gwtOnLoad_0(ModuleUtils.java:55)

Uncaught Error: java.lang.ClassCastException

at ClassCastException_0.createError (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:62059)

at ClassCastException_0.initializeBackingError (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:62104)

at ClassCastException_0.Throwable_0 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:62009)

at ClassCastException_0.Exception_0 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:62145)

at ClassCastException_0.RuntimeException_0 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:62179)

at new ClassCastException_0 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:480204)

at checkCriticalType (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:490918)

at throwClassCastExceptionUnlessNull (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:458)

at Array.init_9 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:74335)

at initializeModules (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:46)

at apply_0 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:63011)

at entry0_0 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:63076)

at com.ptc.windchill.wncgwt.WncGWTdebug-0.js:63045

at gwtOnLoad_0 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:60)

at com.ptc.windchill.wncgwt.WncGWTdebug-0.js:495783

Thomas Broyer

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Jun 12, 2018, 4:36:25 AM6/12/18

to GWT Users

IIUC, make sure all your <entry-point/> classes implement EntryPoint.

Before 2.7, entry points weren't cast to EntryPoint, so you only had to have a method with "void onModuleLoad()" signature; starting with GWT 2.7 (and specifically this commit: https://github.com/gwtproject/gwt/commit/3be1548873300d5bcb74c0258352c90abe7a42bd), the entry points are cast to EntryPoint.

dinesh kumar

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Jun 12, 2018, 8:52:54 AM6/12/18

to GWT Users

The above solution fixes the error but now getting another error:

com.ptc.cat.ops.client.internal.OperationManager

SEVERE: DefaultOperationManager-> Failure dispatching operation

com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException: The response could not be deserialized

at Unknown.Throwable_1(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.Exception_1(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.RuntimeException_1(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.new IncompatibleRemoteServiceException_1(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.onResponseReceived(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$fireOnResponseReceived(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.onReadyStateChange(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.<anonymous>(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.apply_0(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.entry0_0(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.<anonymous>(com.ptc.windchill.wncgwt.WncGWT-0.js)

Caused by: com.google.gwt.user.client.rpc.SerializationException: java.util.LinkedHashSet/1826081506

at Unknown.Throwable_0(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.Exception_0(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.new SerializationException_0(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$check(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$instantiate(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$readObject(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.deserialize_668(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.deserialize_697(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$deserialize_0(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$deserialize(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$readObject(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.deserialize_337(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.deserialize_335(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$deserialize_0(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$deserialize(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$readObject(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.read_8(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.onResponseReceived(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.$fireOnResponseReceived(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.onReadyStateChange(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.<anonymous>(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.apply_0(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.entry0_0(com.ptc.windchill.wncgwt.WncGWT-0.js)

at Unknown.<anonymous>(com.ptc.windchill.wncgwt.WncGWT-0.js)

Colin Alworth

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Jun 12, 2018, 5:35:47 PM6/12/18

to GWT Users

This happens when the server thinks it can serialize and send an object, but the client isn't actually capable of deserializing it. In this case, the class is java.util.LinkedHashSet - the number that follows specifies more details about how the class was referenced by the server, which the client must match in order to deserialize correctly.

Without more details, it is hard to be specific, but I'd guess that for an application like yours (without having seen any updates in about 10 years), you might be missing some generics on some other collection. Raw collections or custom field serializers that just reference Object make it difficult for the RPC wiring to know what types will actually go over the wire. It is possible that in GWT 1.5 this behaved differently, but it has changed since then (I recall both around 2.0 and 2.5 that changes were made to be more precise and limit application sizes in cases like this).

dinesh kumar

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Jun 13, 2018, 1:47:25 AM6/13/18

to GWT Users

Can you please tell what other details are required?

Earlier we were on GWT 2.6.0 (not on GWT 1.5) and currently trying to upgrade to GWT 2.8.2.

Thomas Broyer

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Jun 13, 2018, 3:58:57 AM6/13/18

to GWT Users

There was a change to LinkedHashSet GWT-RPC serialization in 2.7 (see http://www.gwtproject.org/release-notes.html#Release_Notes_2_7_0_RC1)

Make extra-sure that your gwt-servlet used on server side matches the GWT version used for compiling the client side (i.e. that you also updated gwt-servlet to 2.8.2)

dinesh kumar

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Jun 13, 2018, 9:01:11 AM6/13/18

to GWT Users

I am using the latest gwt-servlet, gwt-user, gwt-dev(GWT 2.8.2).

Is there anything that can cause the above error?

Colin Alworth

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Jun 13, 2018, 9:19:54 AM6/13/18

to GWT Users

Details that would be helpful include the RemoteService interface, and whatever classes are referenced there. That probably isn't small though, but it may be enough to find the class that your RemoteServiceServlet is sending back which should have a LinkedHashSet inside it, and see how it is declared there.

Also, in your compiled output directory, there should probably be a .gwt.rpc file showing what types are serializable - java.util.LinkedHashSet/1826081506 should be listed in there if the server tried to send it at all. The log from compiling your GWT application should warn if some raw type was allowed, but it might be necessary to see both the old log (from before the update) and the new one. I'm not certain that either build log will have useful details though.

The main thing I would look for is some List/Set/Map/Collection in your current DTOs which is declared raw, or generic on Object. That at least should be warned in the logs.

From the stack trace, this will be the "third object deep" in the output sent from the server:

    at Unknown.$readObject(com.ptc.windchill.wncgwt.WncGWT-0.js)
    at Unknown.deserialize_668(com.ptc.windchill.wncgwt.WncGWT-0.js)
    at Unknown.deserialize_697(com.ptc.windchill.wncgwt.WncGWT-0.js)
    at Unknown.$deserialize_0(com.ptc.windchill.wncgwt.WncGWT-0.js)
    at Unknown.$deserialize(com.ptc.windchill.wncgwt.WncGWT-0.js)
    at Unknown.$readObject(com.ptc.windchill.wncgwt.WncGWT-0.js)
    at Unknown.deserialize_337(com.ptc.windchill.wncgwt.WncGWT-0.js)
    at Unknown.deserialize_335(com.ptc.windchill.wncgwt.WncGWT-0.js)
    at Unknown.$deserialize_0(com.ptc.windchill.wncgwt.WncGWT-0.js)
    at Unknown.$deserialize(com.ptc.windchill.wncgwt.WncGWT-0.js)
    at Unknown.$readObject(com.ptc.windchill.wncgwt.WncGWT-0.js)

First might be a bean or something which has a field, second will be that field, I'm guessing a raw List/Set/Map or List<Object>/Set<Object> etc, and the third is this failed LinkedHashSet. So, it should be enough to review (or share) every java object mentioned in this failed RemoteService method (and the method signature itself).

dinesh kumar

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Jun 14, 2018, 8:49:29 PM6/14/18

to GWT Users

We are using something like :

Set<type_a> temp = new LinkedHashSet<type_a>();

Can using such generics cause that issue?

dinesh kumar

unread,

Jun 19, 2018, 4:25:50 AM6/19/18

to GWT Users

I am further getting the below error:

com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException: java.lang.ClassNotFoundException: 1C2DD3E7BC435105789300F99C966F9B

at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:323)

at com.ptc.mvc.gwt.GwtHandlerAdapter.processCall(GwtHandlerAdapter.java:156)

at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:305)

at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)

at com.ptc.mvc.gwt.GwtHandlerAdapter.handle(GwtHandlerAdapter.java:118)

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)

at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at wt.licenseusage.licensing.LicenseFilter.doFilter(LicenseFilter.java:47)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at com.ptc.core.ui.validation.URLValidationFilter.doFilter(URLValidationFilter.java:77)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at wt.httpgw.filter.WTContextBeanFilter.doWithWtContextBeanHandler(WTContextBeanFilter.java:104)

at wt.httpgw.filter.WTContextBeanFilter.doFilter(WTContextBeanFilter.java:58)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at wt.servlet.CompressionFilter.doFilter(CompressionFilter.java:301)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at wt.servlet.RequestInterrupter.doFilter(RequestInterrupter.java:335)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at wt.servlet.ServletRequestMonitor.doFilter(ServletRequestMonitor.java:1660)

at wt.servlet.ServletRequestMonitorFilter.doFilter(ServletRequestMonitorFilter.java:56)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)

at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:479)

at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)

at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1478)

at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:745)

Caused by: com.google.gwt.user.client.rpc.SerializationException: java.lang.ClassNotFoundException: 1C2DD3E7BC435105789300F99C966F9B

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserialize(ServerSerializationStreamReader.java:708)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.readObject(ServerSerializationStreamReader.java:592)

at com.google.gwt.user.server.rpc.core.java.util.Arrays$ArrayList_ServerCustomFieldSerializer.instantiate(Arrays.java:71)

at com.google.gwt.user.server.rpc.core.java.util.Arrays$ArrayList_ServerCustomFieldSerializer.instantiateInstance(Arrays.java:106)

at com.google.gwt.user.server.rpc.core.java.util.Arrays$ArrayList_ServerCustomFieldSerializer.instantiateInstance(Arrays.java:39)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.instantiate(ServerSerializationStreamReader.java:1088)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserialize(ServerSerializationStreamReader.java:682)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.readObject(ServerSerializationStreamReader.java:592)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader$ValueReader$8.readValue(ServerSerializationStreamReader.java:149)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeValue(ServerSerializationStreamReader.java:434)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeClass(ServerSerializationStreamReader.java:832)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeImpl(ServerSerializationStreamReader.java:903)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeClass(ServerSerializationStreamReader.java:861)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeImpl(ServerSerializationStreamReader.java:903)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeClass(ServerSerializationStreamReader.java:861)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeImpl(ServerSerializationStreamReader.java:903)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserialize(ServerSerializationStreamReader.java:687)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.readObject(ServerSerializationStreamReader.java:592)

at com.google.gwt.user.server.rpc.core.java.util.Collection_ServerCustomFieldSerializerBase.deserialize(Collection_ServerCustomFieldSerializerBase.java:38)

at com.google.gwt.user.server.rpc.core.java.util.ArrayList_ServerCustomFieldSerializer.deserialize(ArrayList_ServerCustomFieldSerializer.java:40)

at com.google.gwt.user.server.rpc.core.java.util.ArrayList_ServerCustomFieldSerializer.deserializeInstance(ArrayList_ServerCustomFieldSerializer.java:54)

at com.google.gwt.user.server.rpc.core.java.util.ArrayList_ServerCustomFieldSerializer.deserializeInstance(ArrayList_ServerCustomFieldSerializer.java:33)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeImpl(ServerSerializationStreamReader.java:884)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserialize(ServerSerializationStreamReader.java:687)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.readObject(ServerSerializationStreamReader.java:592)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader$ValueReader$8.readValue(ServerSerializationStreamReader.java:149)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeValue(ServerSerializationStreamReader.java:434)

at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:312)

... 49 more

Caused by: java.lang.ClassNotFoundException: 1C2DD3E7BC435105789300F99C966F9B

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1308)

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1136)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:348)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserialize(ServerSerializationStreamReader.java:634)

... 76 more

I don understand what does that string mean : 1C2DD3E7BC435105789300F99C966F9B?

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