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I am getting following exception :-
[13, 13] The left expression is missing from the arithmetic expression. [14, 14] The right expression is missing from the arithmetic expression.
Please help me analyse the problem.
P.S. If I replace the above query in my code with select * from student s, it is working fine.
Exception Description: Syntax error parsing [select count(*) from Student s ].
[13, 13] The left expression is missing from the arithmetic expression.
[14, 14] The right expression is missing from the arithmetic expression.
java.lang.IllegalArgumentException: An exception occurred while creating a query in EntityManager:
Exception Description: Syntax error parsing [select count(*) from Student s ].
[13, 13] The left expression is missing from the arithmetic expression.
[14, 14] The right expression is missing from the arithmetic expression.
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1605)
at sun.reflect.GeneratedMethodAccessor29.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:334)
at com.sun.proxy.$Proxy84.createQuery(Unknown Source)
at sun.reflect.GeneratedMethodAccessor29.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:257)
at com.sun.proxy.$Proxy84.createQuery(Unknown Source)
at com.core.commons.domain.util.reference.repository.AbstractSearchCriteriaSupportRepositoryImpl.createQuery(AbstractSearchCriteriaSupportRepositoryImpl.java:146)
at com.core.commons.domain.util.reference.repository.AbstractSearchCriteriaSupportRepositoryImpl.getTotalRecordsCount(AbstractSearchCriteriaSupportRepositoryImpl.java:117)
at com.core.commons.domain.util.reference.repository.AbstractSearchCriteriaSupportRepositoryImpl.findBy(AbstractSearchCriteriaSupportRepositoryImpl.java:48)
at com.wfm.ft.service.FinancialTransactionServiceImpl.getAllBillingAccounts(FinancialTransactionServiceImpl.java:157)
at com.wfm.ft.web.FTEntryController.getAllBillingAccounts(FTEntryController.java:42)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:690)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496)
at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilter(WebRequestTraceFilter.java:115)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextFilterConfiguration$1.doFilterInternal(EndpointWebMvcAutoConfiguration.java:137)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at org.springframework.boot.actuate.autoconfigure.MetricFilterAutoConfiguration$MetricsFilter.doFilterInternal(MetricFilterAutoConfiguration.java:85)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.AssociatedPartiesCallChecker.doFilter(AssociatedPartiesCallChecker.java:64)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.AdminUrlCallChecker.doFilter(AdminUrlCallChecker.java:53)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.BEMatcherFilter.doFilter(BEMatcherFilter.java:68)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.HttpCreateProcessContextFilter.doFilter(HttpCreateProcessContextFilter.java:44)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.HttpSecuredAccessDataExtractor.doFilter(HttpSecuredAccessDataExtractor.java:89)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.CreateSystemUserContextFilter.doFilter(CreateSystemUserContextFilter.java:69)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.web.SimpleCORSFilter.verifyRequestAndProcess(SimpleCORSFilter.java:183)
at com.core.commons.service.web.SimpleCORSFilter.doFilter(SimpleCORSFilter.java:83)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.TenantProcessContextFilter.doFilter(TenantProcessContextFilter.java:51)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Unknown Source)
Caused by: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.JPQLException
Exception Description: Syntax error parsing [select count(*) from Student s ].
[13, 13] The left expression is missing from the arithmetic expression.
[14, 14] The right expression is missing from the arithmetic expression.
at org.eclipse.persistence.internal.jpa.jpql.HermesParser.buildException(HermesParser.java:155)
at org.eclipse.persistence.internal.jpa.jpql.HermesParser.validate(HermesParser.java:334)
at org.eclipse.persistence.internal.jpa.jpql.HermesParser.populateQueryImp(HermesParser.java:278)
at org.eclipse.persistence.internal.jpa.jpql.HermesParser.buildQuery(HermesParser.java:163)
at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:142)
at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:116)
at org.eclipse.persistence.internal.jpa.EJBQueryImpl.<init>(EJBQueryImpl.java:102)
at org.eclipse.persistence.internal.jpa.EJBQueryImpl.<init>(EJBQueryImpl.java:86)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1603)
... 84 more
UPDATE 1
Exception Description: Problem compiling [select count(ax) from ( select gle.glAccount.accountId as accountId, gle.glAccount.qualifier.name as accountName, gle.glAccount.accountType as accountType,gle.amount.currency.symbol as symbol ,sum(gle.amount.value * gle.postingTypeValue) as totalSum from GLEntry gle group by gle.glAccount.id, gle.glAccount.qualifier.name, gle.glAccount.accountType, gle.amount.currency.symbol,gle.glAccount.id ) ax].
[22, 399] '(select gle.glAccount.accountId as accountId, gle.glAccount.qualifier.name as accountName, gle.glAccount.accountType as accountType, gle.amount.currency.symbol as symbol, sum(gle.amount.value * gle.postingTypeValue) as totalSum from GLEntry gle group by gle.glAccount.id, gle.glAccount.qualifier.name, gle.glAccount.accountType, gle.amount.currency.symbol, gle.glAccount.id) ax' cannot be the first declaration of the FROM clause.
java.lang.IllegalArgumentException: An exception occurred while creating a query in EntityManager:
Exception Description: Problem compiling [select count(ax) from ( select gle.glAccount.accountId as accountId, gle.glAccount.qualifier.name as accountName, gle.glAccount.accountType as accountType,gle.amount.currency.symbol as symbol ,sum(gle.amount.value * gle.postingTypeValue) as totalSum from GLEntry gle group by gle.glAccount.id, gle.glAccount.qualifier.name, gle.glAccount.accountType, gle.amount.currency.symbol,gle.glAccount.id ) ax].
[22, 399] '(select gle.glAccount.accountId as accountId, gle.glAccount.qualifier.name as accountName, gle.glAccount.accountType as accountType, gle.amount.currency.symbol as symbol, sum(gle.amount.value * gle.postingTypeValue) as totalSum from GLEntry gle group by gle.glAccount.id, gle.glAccount.qualifier.name, gle.glAccount.accountType, gle.amount.currency.symbol, gle.glAccount.id) ax' cannot be the first declaration of the FROM clause.
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1605)
at sun.reflect.GeneratedMethodAccessor29.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:334)
at com.sun.proxy.$Proxy84.createQuery(Unknown Source)
at sun.reflect.GeneratedMethodAccessor29.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:257)
at com.sun.proxy.$Proxy84.createQuery(Unknown Source)
at com.core.commons.domain.util.reference.repository.AbstractSearchCriteriaSupportRepositoryImpl.createQuery(AbstractSearchCriteriaSupportRepositoryImpl.java:134)
at com.core.commons.domain.util.reference.repository.AbstractSearchCriteriaSupportRepositoryImpl.getTotalRecordsCount(AbstractSearchCriteriaSupportRepositoryImpl.java:109)
at com.core.commons.domain.util.reference.repository.AbstractSearchCriteriaSupportRepositoryImpl.findBy(AbstractSearchCriteriaSupportRepositoryImpl.java:48)
at com..ft.service.FinancialTransactionServiceImpl.getAllBillingAccounts(FinancialTransactionServiceImpl.java:157)
at com..ft.web.FTEntryController.getAllBillingAccounts(FTEntryController.java:42)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:690)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496)
at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilter(WebRequestTraceFilter.java:115)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextFilterConfiguration$1.doFilterInternal(EndpointWebMvcAutoConfiguration.java:137)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at org.springframework.boot.actuate.autoconfigure.MetricFilterAutoConfiguration$MetricsFilter.doFilterInternal(MetricFilterAutoConfiguration.java:85)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.AssociatedPartiesCallChecker.doFilter(AssociatedPartiesCallChecker.java:64)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.AdminUrlCallChecker.doFilter(AdminUrlCallChecker.java:53)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.BEMatcherFilter.doFilter(BEMatcherFilter.java:68)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.HttpCreateProcessContextFilter.doFilter(HttpCreateProcessContextFilter.java:44)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.HttpSecuredAccessDataExtractor.doFilter(HttpSecuredAccessDataExtractor.java:89)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.CreateSystemUserContextFilter.doFilter(CreateSystemUserContextFilter.java:80)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.web.SimpleCORSFilter.verifyRequestAndProcess(SimpleCORSFilter.java:183)
at com.core.commons.service.web.SimpleCORSFilter.doFilter(SimpleCORSFilter.java:83)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at com.core.commons.service.security.filter.TenantProcessContextFilter.doFilter(TenantProcessContextFilter.java:51)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Unknown Source)
Caused by: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.JPQLException
Exception Description: Problem compiling [select count(ax) from ( select gle.glAccount.accountId as accountId, gle.glAccount.qualifier.name as accountName, gle.glAccount.accountType as accountType,gle.amount.currency.symbol as symbol ,sum(gle.amount.value * gle.postingTypeValue) as totalSum from GLEntry gle group by gle.glAccount.id, gle.glAccount.qualifier.name, gle.glAccount.accountType, gle.amount.currency.symbol,gle.glAccount.id ) ax].
[22, 399] '(select gle.glAccount.accountId as accountId, gle.glAccount.qualifier.name as accountName, gle.glAccount.accountType as accountType, gle.amount.currency.symbol as symbol, sum(gle.amount.value * gle.postingTypeValue) as totalSum from GLEntry gle group by gle.glAccount.id, gle.glAccount.qualifier.name, gle.glAccount.accountType, gle.amount.currency.symbol, gle.glAccount.id) ax' cannot be the first declaration of the FROM clause.
at org.eclipse.persistence.internal.jpa.jpql.HermesParser.buildException(HermesParser.java:155)
at org.eclipse.persistence.internal.jpa.jpql.HermesParser.validate(HermesParser.java:347)
at org.eclipse.persistence.internal.jpa.jpql.HermesParser.populateQueryImp(HermesParser.java:278)
at org.eclipse.persistence.internal.jpa.jpql.HermesParser.buildQuery(HermesParser.java:163)
at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:142)
at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:116)
at org.eclipse.persistence.internal.jpa.EJBQueryImpl.<init>(EJBQueryImpl.java:102)
at org.eclipse.persistence.internal.jpa.EJBQueryImpl.<init>(EJBQueryImpl.java:86)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1603)
... 84 more
784
EclipseLink Extensions (EQL) EclipseLink provides many extensions to the standard JPA JPQL. These extensions provide access to additional database features many of which are part of the SQL standard, provide access to native database features and functions, and provide access to EclipseLink specific features.
SELECT e, c. city FROM Employee e, (SELECT DISTINCT a. city FROM Address a) c WHERE e. address. city = c. city ORDER BY allows the ordering of the results to be specified. Multiple values can be ordered, either ascending (ASC) or descending (DESC). EclipseLink allows functions, sub-selects and other operations in the ORDER BY clause.
This can be done through the ON clause. The ON clause is defined in the JPA 2.1 draft, and is supported in EclipseLink 2.4. EclipseLink also supports usage of the ON clause between two root level objects. For INNER joins EclipseLink will normally append the join condition to the WHERE clause, but this can be configured in the DatabasePlatform.
The EclipseLink ExpressionOperator clas can be used to allow a DatabasePlatform to override an operator, or define custom operators. OPERATOR is similar to FUNC, but allows the function to be database independent, and allows calling functions that require special syntax. OPERATOR requires EclipseLink 2.4.
Try using select count(s) from Student s.
149
I think the exception is rather self explanatory. JPQL parser treats (*) as arithmetic operator thus it expects two operands within parentheses to perform multiplication.
In order to make query string work you would need to add path expressions that refer to student's state fields, i.e.
-- dummy example
SELECT COUNT(s.age * s.height) FROM Student s
If you are interested with EclipseLink's implementation you can go deeper and take a closer look at org.eclipse.persistence.internal.jpa.jpql.HermesParser.validate method where grammatical and semantic validation starts.
27
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