java - NoClassDefFoundError on **CacheModel -

i trying add relationship between tables using below code

<column name="categories" type="collection" entity="category" mapping-table="shoppingitem_category"/>

after have built service using **localserviceutil.getcategoryitems(categoryid) api throwing exception

java.lang.noclassdeffounderror: com/htmsd/slayer/model/impl/shoppingitemcachemodel @ com.htmsd.slayer.model.impl.shoppingitemmodelimpl.tocachemodel(shoppingitemmodelimpl.java:618) @ com.liferay.portal.dao.orm.common.entitycacheimpl.putresult(entitycacheimpl.java:241) @ com.liferay.portal.kernel.dao.orm.entitycacheutil.putresult(entitycacheutil.java:67) @ com.htmsd.slayer.service.persistence.shoppingitempersistenceimpl.cacheresult(shoppingitempersistenceimpl.java:1079) @ com.htmsd.slayer.service.persistence.shoppingitempersistenceimpl.fetchbyprimarykey(shoppingitempersistenceimpl.java:1431) @ com.htmsd.slayer.service.persistence.shoppingitempersistenceimpl.findbyprimarykey(shoppingitempersistenceimpl.java:1376) @ com.htmsd.slayer.service.persistence.shoppingitempersistenceimpl.findbyprimarykey(shoppingitempersistenceimpl.java:1) @ com.liferay.portal.service.persistence.impl.tablemapperimpl.getbasemodels(tablemapperimpl.java:400) @ com.liferay.portal.service.persistence.impl.tablemapperimpl.getleftbasemodels(tablemapperimpl.java:241) @ com.liferay.portal.service.persistence.impl.reversetablemapper.getrightbasemodels(reversetablemapper.java:96) @ com.htmsd.slayer.service.persistence.categorypersistenceimpl.getshoppingitems(categorypersistenceimpl.java:662) @ com.htmsd.slayer.service.persistence.categorypersistenceimpl.getshoppingitems(categorypersistenceimpl.java:641) @ com.htmsd.slayer.service.persistence.categorypersistenceimpl.getshoppingitems(categorypersistenceimpl.java:622) @ sun.reflect.nativemethodaccessorimpl.invoke0(native method) @ sun.reflect.nativemethodaccessorimpl.invoke(unknown source) @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source) @ java.lang.reflect.method.invoke(unknown source) @ org.springframework.aop.support.aoputils.invokejoinpointusingreflection(aoputils.java:320) @ org.springframework.aop.framework.reflectivemethodinvocation.invokejoinpoint(reflectivemethodinvocation.java:183) @ org.springframework.aop.framework.reflectivemethodinvocation.proceed(reflectivemethodinvocation.java:150) @ com.liferay.portal.dao.shard.advice.shardpersistenceadvice.invoke(shardpersistenceadvice.java:54) @ org.springframework.aop.framework.reflectivemethodinvocation.proceed(reflectivemethodinvocation.java:172) @ org.springframework.aop.interceptor.exposeinvocationinterceptor.invoke(exposeinvocationinterceptor.java:90) @ org.springframework.aop.framework.reflectivemethodinvocation.proceed(reflectivemethodinvocation.java:172) @ org.springframework.aop.framework.jdkdynamicaopproxy.invoke(jdkdynamicaopproxy.java:202) @ com.sun.proxy.$proxy1334.getshoppingitems(unknown source) @ com.htmsd.slayer.service.base.shoppingitemlocalservicebaseimpl.getcategoryshoppingitems(shoppingitemlocalservicebaseimpl.java:521) @ sun.reflect.nativemethodaccessorimpl.invoke0(native method) @ sun.reflect.nativemethodaccessorimpl.invoke(unknown source) @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source) @ java.lang.reflect.method.invoke(unknown source) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:115) @ com.liferay.portal.spring.transaction.defaulttransactionexecutor.execute(defaulttransactionexecutor.java:62) @ com.liferay.portal.spring.transaction.transactioninterceptor.invoke(transactioninterceptor.java:51) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:111) @ com.liferay.portal.spring.aop.chainablemethodadvice.invoke(chainablemethodadvice.java:56) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:111) @ com.liferay.portal.spring.aop.chainablemethodadvice.invoke(chainablemethodadvice.java:56) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:111) @ com.liferay.portal.spring.aop.chainablemethodadvice.invoke(chainablemethodadvice.java:56) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:111) @ com.liferay.portal.spring.aop.chainablemethodadvice.invoke(chainablemethodadvice.java:56) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:111) @ com.liferay.portal.spring.aop.chainablemethodadvice.invoke(chainablemethodadvice.java:56) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:111) @ com.liferay.portal.spring.aop.chainablemethodadvice.invoke(chainablemethodadvice.java:56) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:111) @ com.liferay.portal.spring.aop.chainablemethodadvice.invoke(chainablemethodadvice.java:56) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:111) @ com.liferay.portal.spring.aop.chainablemethodadvice.invoke(chainablemethodadvice.java:56) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:111) @ com.liferay.portal.spring.aop.chainablemethodadvice.invoke(chainablemethodadvice.java:56) @ com.liferay.portal.spring.aop.servicebeanmethodinvocation.proceed(servicebeanmethodinvocation.java:111) @ com.liferay.portal.spring.aop.servicebeanaopproxy.invoke(servicebeanaopproxy.java:175) @ com.sun.proxy.$proxy1339.getcategoryshoppingitems(unknown source) @ com.htmsd.slayer.service.shoppingitemlocalserviceutil.getcategoryshoppingitems(shoppingitemlocalserviceutil.java:472) @ org.apache.jsp.html.shoppinglist.view_jsp._jspservice(view_jsp.java:282) @ org.apache.jasper.runtime.httpjspbase.service(httpjspbase.java:70) @ javax.servlet.http.httpservlet.service(httpservlet.java:728) @ org.apache.jasper.servlet.jspservletwrapper.service(jspservletwrapper.java:432) @ org.apache.jasper.servlet.jspservlet.servicejspfile(jspservlet.java:390) @ org.apache.jasper.servlet.jspservlet.service(jspservlet.java:334) @ javax.servlet.http.httpservlet.service(httpservlet.java:728) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:116) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilter.dofilter(invokerfilter.java:119) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ org.apache.catalina.core.applicationdispatcher.invoke(applicationdispatcher.java:749) @ org.apache.catalina.core.applicationdispatcher.doinclude(applicationdispatcher.java:605) @ org.apache.catalina.core.applicationdispatcher.include(applicationdispatcher.java:544) @ com.liferay.portlet.portletrequestdispatcherimpl.dispatch(portletrequestdispatcherimpl.java:331) @ com.liferay.portlet.portletrequestdispatcherimpl.include(portletrequestdispatcherimpl.java:112) @ com.liferay.util.bridges.mvc.mvcportlet.include(mvcportlet.java:371) @ com.liferay.util.bridges.mvc.mvcportlet.include(mvcportlet.java:387) @ com.liferay.util.bridges.mvc.mvcportlet.doview(mvcportlet.java:144) @ com.liferay.portal.kernel.portlet.liferayportlet.dodispatch(liferayportlet.java:213) @ com.liferay.util.bridges.mvc.mvcportlet.dodispatch(mvcportlet.java:323) @ javax.portlet.genericportlet.render(genericportlet.java:233) @ com.liferay.portlet.filterchainimpl.dofilter(filterchainimpl.java:103) @ com.liferay.portlet.scriptdataportletfilter.dofilter(scriptdataportletfilter.java:55) @ com.liferay.portlet.filterchainimpl.dofilter(filterchainimpl.java:100) @ com.liferay.portal.kernel.portlet.portletfilterutil.dofilter(portletfilterutil.java:64) @ com.liferay.portal.kernel.servlet.portletservlet.service(portletservlet.java:112) @ javax.servlet.http.httpservlet.service(httpservlet.java:728) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:116) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilter.dofilter(invokerfilter.java:119) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ org.apache.catalina.core.applicationdispatcher.invoke(applicationdispatcher.java:749) @ org.apache.catalina.core.applicationdispatcher.doinclude(applicationdispatcher.java:605) @ org.apache.catalina.core.applicationdispatcher.include(applicationdispatcher.java:544) @ com.liferay.portlet.invokerportletimpl.invoke(invokerportletimpl.java:583) @ com.liferay.portlet.invokerportletimpl.invokerender(invokerportletimpl.java:656) @ com.liferay.portlet.invokerportletimpl.render(invokerportletimpl.java:362) @ org.apache.jsp.html.portal.render_005fportlet_jsp._jspservice(render_005fportlet_jsp.java:1242) @ org.apache.jasper.runtime.httpjspbase.service(httpjspbase.java:70) @ javax.servlet.http.httpservlet.service(httpservlet.java:728) @ org.apache.jasper.servlet.jspservletwrapper.service(jspservletwrapper.java:432) @ org.apache.jasper.servlet.jspservlet.servicejspfile(jspservlet.java:390) @ org.apache.jasper.servlet.jspservlet.service(jspservlet.java:334) @ javax.servlet.http.httpservlet.service(httpservlet.java:728) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:116) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilter.dofilter(invokerfilter.java:119) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ org.apache.catalina.core.applicationdispatcher.invoke(applicationdispatcher.java:749) @ org.apache.catalina.core.applicationdispatcher.doinclude(applicationdispatcher.java:605) @ org.apache.catalina.core.applicationdispatcher.include(applicationdispatcher.java:544) @ com.liferay.portal.servlet.directservletpathregisterdispatcher.include(directservletpathregisterdispatcher.java:55) @ com.liferay.portal.servlet.classloaderrequestdispatcherwrapper.dodispatch(classloaderrequestdispatcherwrapper.java:78) @ com.liferay.portal.servlet.classloaderrequestdispatcherwrapper.include(classloaderrequestdispatcherwrapper.java:53) @ com.liferay.portlet.portletcontainerimpl._dorender(portletcontainerimpl.java:655) @ com.liferay.portlet.portletcontainerimpl.render(portletcontainerimpl.java:138) @ com.liferay.portlet.securityportletcontainerwrapper.render(securityportletcontainerwrapper.java:141) @ com.liferay.portlet.restrictportletcontainerwrapper.render(restrictportletcontainerwrapper.java:126) @ com.liferay.portal.kernel.portlet.portletcontainerutil.render(portletcontainerutil.java:156) @ com.liferay.portal.layoutconfiguration.util.portletrenderer._render(portletrenderer.java:125) @ com.liferay.portal.layoutconfiguration.util.portletrenderer.render(portletrenderer.java:72) @ com.liferay.portal.layoutconfiguration.util.runtimepageimpl.doprocesstemplate(runtimepageimpl.java:452) @ com.liferay.portal.layoutconfiguration.util.runtimepageimpl.dodispatch(runtimepageimpl.java:284) @ com.liferay.portal.layoutconfiguration.util.runtimepageimpl.processtemplate(runtimepageimpl.java:113) @ com.liferay.portal.layoutconfiguration.util.runtimepageimpl.processtemplate(runtimepageimpl.java:124) @ com.liferay.portal.layoutconfiguration.util.runtimepageutil.processtemplate(runtimepageutil.java:69) @ org.apache.jsp.html.portal.layout.view.portlet_jsp._jspservice(portlet_jsp.java:557) @ org.apache.jasper.runtime.httpjspbase.service(httpjspbase.java:70) @ javax.servlet.http.httpservlet.service(httpservlet.java:728) @ org.apache.jasper.servlet.jspservletwrapper.service(jspservletwrapper.java:432) @ org.apache.jasper.servlet.jspservlet.servicejspfile(jspservlet.java:390) @ org.apache.jasper.servlet.jspservlet.service(jspservlet.java:334) @ javax.servlet.http.httpservlet.service(httpservlet.java:728) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:116) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilter.dofilter(invokerfilter.java:119) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ org.apache.catalina.core.applicationdispatcher.invoke(applicationdispatcher.java:749) @ org.apache.catalina.core.applicationdispatcher.doinclude(applicationdispatcher.java:605) @ org.apache.catalina.core.applicationdispatcher.include(applicationdispatcher.java:544) @ com.liferay.portal.action.layoutaction.includelayoutcontent(layoutaction.java:302) @ com.liferay.portal.action.layoutaction.processlayout(layoutaction.java:405) @ com.liferay.portal.action.layoutaction.doexecute(layoutaction.java:200) @ com.liferay.portal.action.layoutaction.execute(layoutaction.java:95) @ org.apache.struts.action.requestprocessor.processactionperform(requestprocessor.java:431) @ org.apache.struts.action.requestprocessor.process(requestprocessor.java:236) @ com.liferay.portal.struts.portalrequestprocessor.process(portalrequestprocessor.java:179) @ org.apache.struts.action.actionservlet.process(actionservlet.java:1196) @ org.apache.struts.action.actionservlet.doget(actionservlet.java:414) @ javax.servlet.http.httpservlet.service(httpservlet.java:621) @ com.liferay.portal.servlet.mainservlet.callparentservice(mainservlet.java:549) @ com.liferay.portal.servlet.mainservlet.service(mainservlet.java:526) @ javax.servlet.http.httpservlet.service(httpservlet.java:728) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:116) @ com.liferay.portal.kernel.servlet.basefilter.processfilter(basefilter.java:169) @ com.liferay.portal.servlet.filters.jsoncontenttype.jsoncontenttypefilter.processfilter(jsoncontenttypefilter.java:42) @ com.liferay.portal.kernel.servlet.basefilter.dofilter(basefilter.java:59) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdofilter(invokerfilterchain.java:204) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:109) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilter.dofilter(invokerfilter.java:119) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ org.apache.catalina.core.applicationdispatcher.invoke(applicationdispatcher.java:749) @ org.apache.catalina.core.applicationdispatcher.processrequest(applicationdispatcher.java:487) @ org.apache.catalina.core.applicationdispatcher.doforward(applicationdispatcher.java:412) @ org.apache.catalina.core.applicationdispatcher.forward(applicationdispatcher.java:339) @ com.liferay.portal.servlet.friendlyurlservlet.service(friendlyurlservlet.java:156) @ javax.servlet.http.httpservlet.service(httpservlet.java:728) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:116) @ com.liferay.portal.kernel.servlet.basefilter.processfilter(basefilter.java:169) @ com.liferay.portal.servlet.filters.strip.stripfilter.processfilter(stripfilter.java:360) @ com.liferay.portal.kernel.servlet.basefilter.dofilter(basefilter.java:59) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdofilter(invokerfilterchain.java:204) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:109) @ com.liferay.portal.kernel.servlet.basefilter.processfilter(basefilter.java:169) @ com.liferay.portal.servlet.filters.gzip.gzipfilter.processfilter(gzipfilter.java:123) @ com.liferay.portal.kernel.servlet.basefilter.dofilter(basefilter.java:59) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdofilter(invokerfilterchain.java:204) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:109) @ com.liferay.portal.kernel.servlet.basefilter.processfilter(basefilter.java:169) @ com.liferay.portal.servlet.filters.cache.cachefilter.processfilter(cachefilter.java:408) @ com.liferay.portal.kernel.servlet.basefilter.dofilter(basefilter.java:59) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdofilter(invokerfilterchain.java:204) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:109) @ com.liferay.portal.kernel.servlet.basefilter.processfilter(basefilter.java:169) @ com.liferay.portal.servlet.filters.jsoncontenttype.jsoncontenttypefilter.processfilter(jsoncontenttypefilter.java:42) @ com.liferay.portal.kernel.servlet.basefilter.dofilter(basefilter.java:59) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdofilter(invokerfilterchain.java:204) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:109) @ com.liferay.portal.kernel.servlet.basefilter.processfilter(basefilter.java:169) @ com.liferay.portal.servlet.filters.virtualhost.virtualhostfilter.processfilter(virtualhostfilter.java:226) @ com.liferay.portal.kernel.servlet.basefilter.dofilter(basefilter.java:59) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdofilter(invokerfilterchain.java:204) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:109) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdirectcallfilter(invokerfilterchain.java:185) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:96) @ org.tuckey.web.filters.urlrewrite.urlrewritefilter.dofilter(urlrewritefilter.java:738) @ com.liferay.portal.servlet.filters.urlrewrite.urlrewritefilter.processfilter(urlrewritefilter.java:57) @ com.liferay.portal.kernel.servlet.basefilter.dofilter(basefilter.java:59) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdofilter(invokerfilterchain.java:204) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:109) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdirectcallfilter(invokerfilterchain.java:165) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:96) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdirectcallfilter(invokerfilterchain.java:165) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:96) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.processdirectcallfilter(invokerfilterchain.java:185) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilterchain.dofilter(invokerfilterchain.java:96) @ com.liferay.portal.kernel.servlet.filters.invoker.invokerfilter.dofilter(invokerfilter.java:119) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:222) @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:123) @ org.apache.catalina.authenticator.authenticatorbase.invoke(authenticatorbase.java:502) @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:171) @ org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:99) @ org.apache.catalina.valves.accesslogvalve.invoke(accesslogvalve.java:953) @ org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:118) @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:408) @ org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1023) @ org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:589) @ org.apache.tomcat.util.net.jioendpoint$socketprocessor.run(jioendpoint.java:310) @ java.util.concurrent.threadpoolexecutor.runworker(unknown source) @ java.util.concurrent.threadpoolexecutor$worker.run(unknown source) @ java.lang.thread.run(unknown source) 

can tell whats problem