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POCalling a MySql routine/stored procedure with an EJB Query
 

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    <p>After a lot of troubles, my webapp is close to its final version, but it still needs something.</p> <p>So I need to use a "complex" query to fetch some results.</p> <p>This query needs to call a MySql routine and has to return a <code>Map</code> instead of a <code>List</code>.</p> <p>Here's the query :</p> <pre><code>SELECT d.id, contaOccorrenze(d.descrizione, '" + query + "') AS 'occorrenze' FROM Dispensa d WHERE d.tag LIKE '%" + query + "%' OR d.titolo LIKE '%" + query + "%' OR d.descrizione LIKE '%" + query + "%' </code></pre> <p>where <code>query</code> is the word that I'm looking for and <code>contaOccorrenze</code> is the routine that I need to call.</p> <p>This query works fine in Workbench, so the query is not my problem.</p> <p>Here's the Stack Trace that comes after I try to execute the query :</p> <pre><code> Caused by: java.lang.IllegalArgumentException: An exception occurred while creating a query in EntityManager: Exception Description: Syntax error parsing the query [SELECT d.id, contaOccorrenze(d.descrizione, 'lunga') AS 'occorrenze' FROM Dispensa d WHERE d.tag LIKE '%lunga%' OR d.titolo LIKE '%lunga%' OR d.descrizione LIKE '%lunga%'], line 1, column 28: unexpected token [(]. Internal Exception: NoViableAltException(83@[()* loopback of 383:9: (d= DOT right= attribute )*]) at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1477) at com.sun.enterprise.container.common.impl.EntityManagerWrapper.createQuery(EntityManagerWrapper.java:436) at facade.DispensaFacade.findLikeComplex(DispensaFacade.java:101) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052) at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124) at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5388) at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619) at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800) at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571) at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162) at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144) at sun.reflect.GeneratedMethodAccessor80.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861) at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800) at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370) at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5360) at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5348) at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:214) ... 77 more Caused by: Exception [EclipseLink-8025] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.JPQLException Exception Description: Syntax error parsing the query [SELECT d.id, contaOccorrenze(d.descrizione, 'lunga') AS 'occorrenze' FROM Dispensa d WHERE d.tag LIKE '%lunga%' OR d.titolo LIKE '%lunga%' OR d.descrizione LIKE '%lunga%'], line 1, column 28: unexpected token [(]. Internal Exception: NoViableAltException(83@[()* loopback of 383:9: (d= DOT right= attribute )*]) at org.eclipse.persistence.exceptions.JPQLException.unexpectedToken(JPQLException.java:372) at org.eclipse.persistence.internal.jpa.parsing.jpql.JPQLParser.handleRecognitionException(JPQLParser.java:320) at org.eclipse.persistence.internal.jpa.parsing.jpql.JPQLParser.addError(JPQLParser.java:246) at org.eclipse.persistence.internal.jpa.parsing.jpql.JPQLParser.reportError(JPQLParser.java:363) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.pathExprOrVariableAccess(JPQLParser.java:1436) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.arithmeticPrimary(JPQLParser.java:4720) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.arithmeticFactor(JPQLParser.java:4660) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.arithmeticTerm(JPQLParser.java:4546) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.simpleArithmeticExpression(JPQLParser.java:4462) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.scalarExpression(JPQLParser.java:4834) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.selectExpression(JPQLParser.java:1269) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.selectItem(JPQLParser.java:1169) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.selectClause(JPQLParser.java:1108) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.selectStatement(JPQLParser.java:359) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.document(JPQLParser.java:281) at org.eclipse.persistence.internal.jpa.parsing.jpql.JPQLParser.parse(JPQLParser.java:134) at org.eclipse.persistence.internal.jpa.parsing.jpql.JPQLParser.buildParseTree(JPQLParser.java:95) at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:215) at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:190) at org.eclipse.persistence.internal.jpa.EJBQueryImpl.&lt;init&gt;(EJBQueryImpl.java:142) at org.eclipse.persistence.internal.jpa.EJBQueryImpl.&lt;init&gt;(EJBQueryImpl.java:126) at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1475) ... 100 more Caused by: NoViableAltException(83@[()* loopback of 383:9: (d= DOT right= attribute )*]) at org.eclipse.persistence.internal.libraries.antlr.runtime.DFA.noViableAlt(DFA.java:159) at org.eclipse.persistence.internal.libraries.antlr.runtime.DFA.predict(DFA.java:116) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.pathExprOrVariableAccess(JPQLParser.java:1408) ... 117 more </code></pre> <p>Here's the full method that I'm trying to use (casting the result <code>List</code> to a <code>HashMap</code> is a way that I found googling, but I'm quite sure that there's a better way to get a <code>HashMap</code> from my query)</p> <pre><code>public HashMap&lt;Integer, Integer&gt; findLikeComplex(String query) { String SQLquery = "SELECT d.id, contaOccorrenze(d.descrizione, '" + query + "') AS 'occorrenze' FROM Dispensa d WHERE d.tag LIKE '%" + query + "%' OR d.titolo LIKE '%" + query + "%' OR d.descrizione LIKE '%" + query + "%'"; return (HashMap&lt;Integer, Integer&gt;) getEntityManager().createQuery(SQLquery).getResultList(); } </code></pre> <p>I was also thinking to change my <code>HashMap</code> from <code>HashMap&lt;Integer, Integer&gt;</code> to <code>HashMap&lt;Dispensa, Integer&gt;</code>, by changing the <code>d.id</code> statement of the query to <code>*</code>.</p> <p>Will it work or I'm asking too much?</p>
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