Oops. My answer was redundant. I missed Dan's.
Best regards,
Johan Doornenbal+31 6 227 666 28




On Fri, Apr 6, 2018 2:50 PM, Johan Doornenbal jdoornen...@incode.org  wrote:
Hi Steve,
I think your super class needs a public no-arg constructor as well
Best regards,
Johan Doornenbal+31 6 227 666 28




On Fri, Apr 6, 2018 2:48 PM, Dan Haywood d...@haywood-associates.co.uk  wrote:
Hi Steve,




the DN enhancer will generate a default constructor if there is none

defined explicitly, and so I think that your ChatsParticipant is actually:




ChatsParticipant has only




public class ChatsParticipant extends Attendee {




 public ChatsParticipant() {

 super();

 }

 public ChatsParticipant(ChatsPerson person) {

 super(person);

 }

 ...

}







The error you have is:




java.lang.IllegalAccessError: tried to access method

au.com.scds.eventschedule.base.impl.Attendee.<init>()V from class

au.com.scds.chats.dom.participant.ChatsParticipant




.In this the Attendee.<init>()V is a reference to your private constructor

of Attendee.




The fix will be to change the visibility of Attendee's constructor to

protected or public.




HTH

Dan




[1] http://www.datanucleus.org/products/accessplatform/jdo/enhancer.html







On Fri, 6 Apr 2018 at 13:41 Stephen Cameron <steve.cameron...@gmail.com>

wrote:




I am refactoring an existing project so it is based on a simpler more

generic project.



The simple generic project is all good, but when I look to create a new

version of the old project, based on the new, I get an validation error

(see below). It seems to be an issue with constructors, ChatsParticipant

extends Attendee



Attendee has constructors



private Attendee() {

}



public Attendee(Person person) {

this.setPerson(person);

}



ChatsParticipant has only



public ChatsParticipant(ChatsPerson person) {

super(person);

}



where ChatsPerson extends Person



Any thoughts?





***********************************************



[INFO]

------------------------------------------------------------------------

[INFO] BUILD FAILURE

[INFO]

------------------------------------------------------------------------

[INFO] Total time: 28.723 s

[INFO] Finished at: 2018-04-06T22:21:14+10:00

[INFO] Final Memory: 74M/592M

[INFO]

------------------------------------------------------------------------

[ERROR] Failed to execute goal

org.apache.isis.tool:isis-maven-plugin:1.16.2:validate (default) on project

chats-dom: Execution default of goal

org.apache.isis.tool:isis-maven-plugin:1.16.2:validate failed: An API

incompatibility was encountered while executing

org.apache.isis.tool:isis-maven-plugin:1.16.2:validate:

java.lang.IllegalAccessError: tried to access method

au.com.scds.eventschedule.base.impl.Attendee.<init>()V from class

au.com.scds.chats.dom.participant.ChatsParticipant

[ERROR] -----------------------------------------------------

[ERROR] realm = plugin>org.apache.isis.tool:isis-maven-plugin:1.16.2

[ERROR] strategy =

org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy

[ERROR] urls[0] =




file:/D:/maven/repository/org/apache/isis/tool/isis-maven-plugin/1.16.2/isis-maven-plugin-1.16.2.jar

[ERROR] urls[1] = file:/D:/temp3/chats/dom/target/classes/

[ERROR] urls[2] =




file:/D:/maven/repository/org/apache/isis/core/isis-core-applib/1.16.2/isis-core-applib-1.16.2.jar

[ERROR] urls[3] =




file:/D:/maven/repository/org/apache/geronimo/specs/geronimo-atinject_1.0_spec/1.0/geronimo-atinject_1.0_spec-1.0.jar

[ERROR] urls[4] =




file:/D:/maven/repository/javax/validation/validation-api/1.1.0.Final/validation-api-1.1.0.Final.jar

[ERROR] urls[5] =




file:/D:/maven/repository/org/apache/geronimo/specs/geronimo-jta_1.1_spec/1.1.1/geronimo-jta_1.1_spec-1.1.1.jar

[ERROR] urls[6] =




file:/D:/maven/repository/org/apache/geronimo/specs/geronimo-jcdi_1.0_spec/1.0/geronimo-jcdi_1.0_spec-1.0.jar

[ERROR] urls[7] =



file:/D:/maven/repository/org/jboss/spec/javax/ws/rs/jboss-jaxrs-api_2.0_spec/

1.0.0.Final/jboss-jaxrs-api_2.0_spec-1.0.0.Final.jar

[ERROR] urls[8] =

file:/D:/maven/repository/javax/jdo/jdo-api/3.1/jdo-api-3.1.jar

[ERROR] urls[9] =




file:/D:/maven/repository/javax/transaction/transaction-api/1.1/transaction-api-1.1.jar

[ERROR] urls[10] =




file:/D:/maven/repository/org/datanucleus/datanucleus-api-jdo/4.1.1/datanucleus-api-jdo-4.1.1.jar

[ERROR] urls[11] =




file:/D:/maven/repository/org/datanucleus/datanucleus-jdo-query/4.0.5/datanucleus-jdo-query-4.0.5.jar

[ERROR] urls[12] =




file:/D:/maven/repository/org/reflections/reflections/0.9.10/reflections-0.9.10.jar

[ERROR] urls[13] =




file:/D:/maven/repository/com/google/code/findbugs/annotations/2.0.1/annotations-2.0.1.jar

[ERROR] urls[14] =




file:/D:/maven/repository/org/axonframework/axon-core/2.4.4/axon-core-2.4.4.jar

[ERROR] urls[15] =

file:/D:/maven/repository/com/lmax/disruptor/3.2.0/disruptor-3.2.0.jar

[ERROR] urls[16] =

file:/D:/maven/repository/cglib/cglib-nodep/2.2.2/cglib-nodep-2.2.2.jar

[ERROR] urls[17] =

file:/D:/maven/repository/joda-time/joda-time/2.9.4/joda-time-2.9.4.jar

[ERROR] urls[18] =

file:/D:/maven/repository/commons-io/commons-io/2.4/commons-io-2.4.jar

[ERROR] urls[19] =




file:/D:/maven/repository/com/thoughtworks/xstream/xstream/1.4.9/xstream-1.4.9.jar

[ERROR] urls[20] = file:/D:/maven/repository/xmlpull/xmlpull/

1.1.3.1/xmlpull-1.1.3.1.jar

[ERROR] urls[21] =

file:/D:/maven/repository/xpp3/xpp3_min/1.1.4c/xpp3_min-1.1.4c.jar

[ERROR] urls[22] =




file:/D:/maven/repository/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar

[ERROR] urls[23] =




file:/D:/maven/repository/org/datanucleus/datanucleus-core/4.1.7/datanucleus-core-4.1.7.jar

[ERROR] urls[24] =




file:/D:/maven/repository/org/isisaddons/wicket/fullcalendar2/isis-wicket-fullcalendar2-cpt/1.16.0/isis-wicket-fullcalendar2-cpt-1.16.0.jar

[ERROR] urls[25] =




file:/D:/maven/repository/net/ftlines/wicket-fullcalendar/wicket-fullcalendar-core/2.2.0/wicket-fullcalendar-core-2.2.0.jar

[ERROR] urls[26] =




file:/D:/maven/repository/org/codehaus/jackson/jackson-core-asl/1.7.5/jackson-core-asl-1.7.5.jar

[ERROR] urls[27] =




file:/D:/maven/repository/org/codehaus/jackson/jackson-mapper-asl/1.7.5/jackson-mapper-asl-1.7.5.jar

[ERROR] urls[28] =




file:/D:/maven/repository/org/apache/wicket/wicket-core/7.9.0/wicket-core-7.9.0.jar

[ERROR] urls[29] =




file:/D:/maven/repository/org/apache/commons/commons-collections4/4.1/commons-collections4-4.1.jar

[ERROR] urls[30] =




file:/D:/maven/repository/org/apache/wicket/wicket-request/7.9.0/wicket-request-7.9.0.jar

[ERROR] urls[31] =




file:/D:/maven/repository/org/apache/wicket/wicket-util/7.9.0/wicket-util-7.9.0.jar

[ERROR] urls[32] =




file:/D:/maven/repository/commons-fileupload/commons-fileupload/1.3.2/commons-fileupload-1.3.2.jar

[ERROR] urls[33] =




file:/D:/maven/repository/org/isisaddons/wicket/excel/isis-wicket-excel-cpt/1.16.0/isis-wicket-excel-cpt-1.16.0.jar

[ERROR] urls[34] =

file:/D:/maven/repository/org/apache/poi/poi/3.9/poi-3.9.jar

[ERROR] urls[35] =

file:/D:/maven/repository/org/apache/poi/poi-ooxml/3.9/poi-ooxml-3.9.jar

[ERROR] urls[36] =




file:/D:/maven/repository/org/apache/poi/poi-ooxml-schemas/3.9/poi-ooxml-schemas-3.9.jar

[ERROR] urls[37] =




file:/D:/maven/repository/org/apache/xmlbeans/xmlbeans/2.3.0/xmlbeans-2.3.0.jar

[ERROR] urls[38] =

file:/D:/maven/repository/org/mindrot/jbcrypt/0.4/jbcrypt-0.4.jar

[ERROR] urls[39] =




file:/D:/maven/repository/org/isisaddons/module/security/isis-module-security-dom/1.16.0/isis-module-security-dom-1.16.0.jar

[ERROR] urls[40] =




file:/D:/maven/repository/org/incode/module/base/incode-module-base-dom/1.16.0/incode-module-base-dom-1.16.0.jar

[ERROR] urls[41] =




file:/D:/maven/repository/org/incode/example/note/incode-example-note-dom/1.16.0/incode-example-note-dom-1.16.0.jar

[ERROR] urls[42] =




file:/D:/maven/repository/org/isisaddons/wicket/gmap3/isis-wicket-gmap3-cpt/1.16.2/isis-wicket-gmap3-cpt-1.16.2.jar

[ERROR] urls[43] =




file:/D:/maven/repository/org/apache/httpcomponents/httpclient/4.5.2/httpclient-4.5.2.jar

[ERROR] urls[44] =




file:/D:/maven/repository/org/apache/httpcomponents/httpcore/4.4.4/httpcore-4.4.4.jar

[ERROR] urls[45] =




file:/D:/maven/repository/commons-logging/commons-logging/1.2/commons-logging-1.2.jar

[ERROR] urls[46] =

file:/D:/maven/repository/org/jdom/jdom/2.0.2/jdom-2.0.2.jar

[ERROR] urls[47] =




file:/D:/maven/repository/org/wicketstuff/wicketstuff-gmap3/7.8.0/wicketstuff-gmap3-7.8.0.jar

[ERROR] urls[48] =




file:/D:/maven/repository/com/fasterxml/jackson/core/jackson-core/2.8.0/jackson-core-2.8.0.jar

[ERROR] urls[49] =




file:/D:/maven/repository/com/fasterxml/jackson/core/jackson-databind/2.8.0/jackson-databind-2.8.0.jar

[ERROR] urls[50] =




file:/D:/maven/repository/com/fasterxml/jackson/core/jackson-annotations/2.8.0/jackson-annotations-2.8.0.jar

[ERROR] urls[51] =




file:/D:/maven/repository/au/com/scds/event-schedule-module-base/1.0/event-schedule-module-base-1.0.jar

[ERROR] urls[52] =




file:/D:/maven/repository/org/incode/example/commchannel/incode-example-commchannel-dom/1.16.0/incode-example-commchannel-dom-1.16.0.jar

[ERROR] urls[53] =

file:/D:/maven/repository/org/hsqldb/hsqldb/2.3.1/hsqldb-2.3.1.jar

[ERROR] urls[54] =




file:/D:/maven/repository/org/apache/isis/core/isis-core-runtime/1.16.2/isis-core-runtime-1.16.2.jar

[ERROR] urls[55] =




file:/D:/maven/repository/org/apache/isis/core/isis-core-log4j/1.16.2/isis-core-log4j-1.16.2.jar

[ERROR] urls[56] =




file:/D:/maven/repository/org/apache/isis/core/isis-core-metamodel/1.16.2/isis-core-metamodel-1.16.2.jar

[ERROR] urls[57] =




file:/D:/maven/repository/commons-codec/commons-codec/1.10/commons-codec-1.10.jar

[ERROR] urls[58] =



file:/D:/maven/repository/commons-cli/commons-cli/1.3.1/commons-cli-1.3.1.jar

[ERROR] urls[59] =

file:/D:/maven/repository/com/google/inject/guice/4.1.0/guice-4.1.0.jar

[ERROR] urls[60] =

file:/D:/maven/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar

[ERROR] urls[61] =

file:/D:/maven/repository/com/google/code/gson/gson/2.7/gson-2.7.jar

[ERROR] urls[62] =




file:/D:/maven/repository/org/datanucleus/datanucleus-rdbms/4.1.9/datanucleus-rdbms-4.1.9.jar

[ERROR] urls[63] =




file:/D:/maven/repository/org/datanucleus/datanucleus-jodatime/4.1.0-release/datanucleus-jodatime-4.1.0-release.jar

[ERROR] urls[64] =



file:/D:/maven/repository/io/swagger/swagger-core/1.5.9/swagger-core-1.5.9.jar

[ERROR] urls[65] =




file:/D:/maven/repository/com/fasterxml/jackson/datatype/jackson-datatype-joda/2.4.5/jackson-datatype-joda-2.4.5.jar

[ERROR] urls[66] =




file:/D:/maven/repository/com/fasterxml/jackson/dataformat/jackson-dataformat-yaml/2.4.5/jackson-dataformat-yaml-2.4.5.jar

[ERROR] urls[67] =

file:/D:/maven/repository/org/yaml/snakeyaml/1.12/snakeyaml-1.12.jar

[ERROR] urls[68] =




file:/D:/maven/repository/io/swagger/swagger-models/1.5.9/swagger-models-1.5.9.jar

[ERROR] urls[69] =




file:/D:/maven/repository/io/swagger/swagger-annotations/1.5.9/swagger-annotations-1.5.9.jar

[ERROR] urls[70] =




file:/D:/maven/repository/org/apache/isis/core/isis-core-schema/1.16.2/isis-core-schema-1.16.2.jar

[ERROR] urls[71] =

file:/D:/maven/repository/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar

[ERROR] urls[72] =

file:/D:/maven/repository/xml-apis/xml-apis/1.0.b2/xml-apis-1.0.b2.jar

[ERROR] urls[73] =




file:/D:/maven/repository/org/slf4j/slf4j-log4j12/1.7.21/slf4j-log4j12-1.7.21.jar

[ERROR] urls[74] =

file:/D:/maven/repository/log4j/log4j/1.2.17/log4j-1.2.17.jar

[ERROR] urls[75] =




file:/D:/maven/repository/org/javassist/javassist/3.20.0-GA/javassist-3.20.0-GA.jar

[ERROR] urls[76] =




file:/D:/maven/repository/org/apache/commons/commons-email/1.4/commons-email-1.4.jar

[ERROR] urls[77] =



file:/D:/maven/repository/com/sun/mail/javax.mail/1.5.2/javax.mail-1.5.2.jar

[ERROR] urls[78] =




file:/D:/maven/repository/javax/activation/activation/1.1.1/activation-1.1.1.jar

[ERROR] urls[79] =

file:/D:/maven/repository/javax/enterprise/cdi-api/1.0/cdi-api-1.0.jar

[ERROR] urls[80] =



file:/D:/maven/repository/javax/annotation/jsr250-api/1.0/jsr250-api-1.0.jar

[ERROR] urls[81] =




file:/D:/maven/repository/org/eclipse/sisu/org.eclipse.sisu.inject/0.3.2/org.eclipse.sisu.inject-0.3.2.jar

[ERROR] urls[82] =




file:/D:/maven/repository/org/codehaus/plexus/plexus-utils/3.0.17/plexus-utils-3.0.17.jar

[ERROR] urls[83] =




file:/D:/maven/repository/org/apache/maven/plugin-tools/maven-plugin-annotations/3.4/maven-plugin-annotations-3.4.jar

[ERROR] urls[84] =




file:/D:/maven/repository/org/eclipse/aether/aether-util/1.0.2.v20150114/aether-util-1.0.2.v20150114.jar

[ERROR] urls[85] =




file:/D:/maven/repository/org/codehaus/plexus/plexus-interpolation/1.21/plexus-interpolation-1.21.jar

[ERROR] urls[86] =




file:/D:/maven/repository/org/codehaus/plexus/plexus-component-annotations/1.6/plexus-component-annotations-1.6.jar

[ERROR] urls[87] =




file:/D:/maven/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.3/plexus-sec-dispatcher-1.3.jar

[ERROR] urls[88] =




file:/D:/maven/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar

[ERROR] urls[89] =




file:/D:/maven/repository/org/apache/commons/commons-lang3/3.4/commons-lang3-3.4.jar

[ERROR] urls[90] =




file:/D:/maven/repository/org/apache/maven/maven-builder-support/3.3.9/maven-builder-support-3.3.9.jar

[ERROR] urls[91] =




file:/D:/maven/repository/org/codehaus/woodstox/wstx-asl/3.2.6/wstx-asl-3.2.6.jar

[ERROR] urls[92] =

file:/D:/maven/repository/stax/stax-api/1.0.1/stax-api-1.0.1.jar

[ERROR] urls[93] =




file:/D:/maven/repository/org/sonatype/spice/model-builder/1.3/model-builder-1.3.jar

[ERROR] urls[94] =




file:/D:/maven/repository/org/apache/maven/maven-project-builder/3.0-alpha-2/maven-project-builder-3.0-alpha-2.jar

[ERROR] urls[95] =




file:/D:/maven/repository/org/apache/xbean/xbean-reflect/3.7/xbean-reflect-3.7.jar

[ERROR] urls[96] =

file:/D:/maven/repository/com/google/guava/guava/19.0/guava-19.0.jar

[ERROR] urls[97] =




file:/D:/maven/repository/org/hamcrest/hamcrest-library/1.3/hamcrest-library-1.3.jar

[ERROR] urls[98] =



file:/D:/maven/repository/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar

[ERROR] Number of foreign imports: 1

[ERROR] import: Entry[import from realm

ClassRealm[project>au.com.scds:chats-dom:2.0, parent:

ClassRealm[maven.api,

parent: null]]]

[ERROR]

[ERROR] -----------------------------------------------------

[ERROR] -> [Help 1]

[ERROR]

[ERROR] To see the full stack trace of the errors, re-run Maven with the -e

switch.

[ERROR] Re-run Maven using the -X switch to enable full debug logging.

[ERROR]

[ERROR] For more information about the errors and possible solutions,

please read the following articles:

[ERROR] [Help 1]

http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException

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