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From "Niels Beekman" <n.beek...@wis.nl>
Subject RE: How to map a list of double?
Date Tue, 11 Sep 2007 10:07:39 GMT
This seems to be a bug, iBATIS tries to cast a double array to an Object
array. A workaround would probably be to change the double array to a
Double list.

 

Niels

________________________________

From: Jonathan Alvarsson [mailto:jonathan.alvarsson@gmail.com] 
Sent: dinsdag 11 september 2007 11:36
To: user-java@ibatis.apache.org
Subject: How to map a list of double?

 

I am trying to map a list of doubles in my bean but I keep getting a
ClassCastException on it.

<resultMap class="MoleculeDescriptor" id="MoleculeDescriptor"> 
        <result property="id"     column="id"   />
        <result property="name"   column="name" />
        <result property="values" column="id"
select="MoleculeDescriptor.getValueList" />
</resultMap>

<select id="MoleculeDescriptor.getValueList " resultClass="List"
parameterClass="String">
        SELECT
            value AS value
        FROM
            DescriptorValue
        WHERE
            abstractDescriptor=#value#
        ORDER BY
            arrayPos
</select>

CREATE TABLE DescriptorValue (
    id       BIGINT AUTO_INCREMENT NOT NULL,
    value    DOUBLE                NOT NULL,
    arrayPos INT                   NOT NULL,
    abstractDescriptor VARCHAR(36) NOT NULL, 

    PRIMARY KEY (id),
    FOREIGN KEY (abstractDescriptor) REFERENCES AbstractDescriptor(id)
) ENGINE=InnoDB;

How can I do this?

Oh and the exception I get:

org.springframework.jdbc.UncategorizedSQLException: SqlMapClient
operation; uncategorized SQLException for SQL []; SQL state [null];
error code [0];   
--- The error occurred in mapping/MoleculeDescriptor.xml.  
--- The error occurred while applying a result map.  
--- Check the MoleculeDescriptor.  
--- Check the result mapping for the 'values' property.  
--- Cause: java.lang.ClassCastException: [D; nested exception is
com.ibatis.common.jdbc.exception.NestedSQLException:   
--- The error occurred in mapping/MoleculeDescriptor.xml.  
--- The error occurred while applying a result map.  
--- Check the MoleculeDescriptor.  
--- Check the result mapping for the 'values' property.  
--- Cause: java.lang.ClassCastException: [D
Caused by: com.ibatis.common.jdbc.exception.NestedSQLException :   
--- The error occurred in mapping/MoleculeDescriptor.xml.  
--- The error occurred while applying a result map.  
--- Check the MoleculeDescriptor.  
--- Check the result mapping for the 'values' property.  
--- Cause: java.lang.ClassCastException: [D
    at
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQuery
WithCallback(GeneralStatement.java:188)
    at
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQuery
ForObject (GeneralStatement.java:104)
    at
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(SqlM
apExecutorDelegate.java:566)
    at
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(SqlM
apExecutorDelegate.java :541)
    at
com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForObject(SqlMapSes
sionImpl.java:106)
    at
org.springframework.orm.ibatis.SqlMapClientTemplate$1.doInSqlMapClient(S
qlMapClientTemplate.java:243)
    at
org.springframework.orm.ibatis.SqlMapClientTemplate.execute(SqlMapClient
Template.java:193)
    at
org.springframework.orm.ibatis.SqlMapClientTemplate.queryForObject(SqlMa
pClientTemplate.java:241)
    at net.bioclipse.pcm.dao.GenericDao.getById (GenericDao.java:45)
    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.aop.support.AopUtils.invokeJoinpointUsingReflection(
AopUtils.java:296)
    at
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinp
oint (ReflectiveMethodInvocation.java:177)
    at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(Ref
lectiveMethodInvocation.java:144)
    at net.bioclipse.pcm.dao.FetchIntroductionInterceptor.invoke
(FetchIntroductionInterceptor.java:22)
    at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(Ref
lectiveMethodInvocation.java:166)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke
(JdkDynamicAopProxy.java:204)
    at $Proxy0.getById(Unknown Source)
    at
net.bioclipse.pcm.dao.GenericDaoTest.testGetById(GenericDaoTest.java:69)
    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 junit.framework.TestCase.runTest (TestCase.java:168)
    at junit.framework.TestCase.runBare(TestCase.java:134)
    at
org.springframework.test.ConditionalTestCase.runBare(ConditionalTestCase
.java:69)
    at
org.springframework.test.annotation.AbstractAnnotationAwareTransactional
Tests.access$001 (AbstractAnnotationAwareTransactionalTests.java:47)
    at
org.springframework.test.annotation.AbstractAnnotationAwareTransactional
Tests$1.run(AbstractAnnotationAwareTransactionalTests.java:115)
    at
org.springframework.test.annotation.AbstractAnnotationAwareTransactional
Tests.runTest (AbstractAnnotationAwareTransactionalTests.java:180)
    at
org.springframework.test.annotation.AbstractAnnotationAwareTransactional
Tests.runTestTimed(AbstractAnnotationAwareTransactionalTests.java:153)
    at
org.springframework.test.annotation.AbstractAnnotationAwareTransactional
Tests.runBare (AbstractAnnotationAwareTransactionalTests.java:111)
    at junit.framework.TestResult$1.protect(TestResult.java:110)
    at junit.framework.TestResult.runProtected(TestResult.java:128)
    at junit.framework.TestResult.run (TestResult.java:113)
    at junit.framework.TestCase.run(TestCase.java:124)
    at junit.framework.TestSuite.runTest(TestSuite.java:232)
    at junit.framework.TestSuite.run(TestSuite.java:227)
    at
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run
(JUnit3TestReference.java:130)
    at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.ja
va:38)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTe
stRunner.java:460)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTe
stRunner.java:673)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRun
ner.java:386)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main
(RemoteTestRunner.java:196)
Caused by: java.lang.ClassCastException: [D
    at
com.ibatis.sqlmap.engine.mapping.result.loader.ResultLoader.listToArray(
ResultLoader.java:85)
    at
com.ibatis.sqlmap.engine.mapping.result.loader.ResultLoader.getResult
(ResultLoader.java:75)
    at
com.ibatis.sqlmap.engine.mapping.result.loader.ResultLoader.loadResult(R
esultLoader.java:59)
    at
com.ibatis.sqlmap.engine.mapping.result.BasicResultMap.getNestedSelectMa
ppingValue(BasicResultMap.java :502)
    at
com.ibatis.sqlmap.engine.mapping.result.BasicResultMap.getResults(BasicR
esultMap.java:340)
    at
com.ibatis.sqlmap.engine.execution.SqlExecutor.handleResults(SqlExecutor
.java:381)
    at
com.ibatis.sqlmap.engine.execution.SqlExecutor.handleMultipleResults
(SqlExecutor.java:301)
    at
com.ibatis.sqlmap.engine.execution.SqlExecutor.executeQuery(SqlExecutor.
java:190)
    at
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.sqlExecuteQu
ery(GeneralStatement.java :205)
    at
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQuery
WithCallback(GeneralStatement.java:173)
    ... 44 more



-- 
// Jonathan 


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