How to map a list of double?

[Jonathan Alvarsson <jo...@gmail.com>]

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.executeQueryWithCallback
(GeneralStatement.java:188)
    at
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryForObject
(GeneralStatement.java:104)
    at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(
SqlMapExecutorDelegate.java:566)
    at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(
SqlMapExecutorDelegate.java:541)
    at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForObject(
SqlMapSessionImpl.java:106)
    at
org.springframework.orm.ibatis.SqlMapClientTemplate$1.doInSqlMapClient(
SqlMapClientTemplate.java:243)
    at org.springframework.orm.ibatis.SqlMapClientTemplate.execute(
SqlMapClientTemplate.java:193)
    at org.springframework.orm.ibatis.SqlMapClientTemplate.queryForObject(
SqlMapClientTemplate.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.invokeJoinpoint
(ReflectiveMethodInvocation.java:177)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(
ReflectiveMethodInvocation.java:144)
    at net.bioclipse.pcm.dao.FetchIntroductionInterceptor.invoke(
FetchIntroductionInterceptor.java:22)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(
ReflectiveMethodInvocation.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.AbstractAnnotationAwareTransactionalTests.access$001
(AbstractAnnotationAwareTransactionalTests.java:47)
    at
org.springframework.test.annotation.AbstractAnnotationAwareTransactionalTests$1.run
(AbstractAnnotationAwareTransactionalTests.java:115)
    at
org.springframework.test.annotation.AbstractAnnotationAwareTransactionalTests.runTest
(AbstractAnnotationAwareTransactionalTests.java:180)
    at
org.springframework.test.annotation.AbstractAnnotationAwareTransactionalTests.runTestTimed
(AbstractAnnotationAwareTransactionalTests.java:153)
    at
org.springframework.test.annotation.AbstractAnnotationAwareTransactionalTests.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.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(
RemoteTestRunner.java:460)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(
RemoteTestRunner.java:673)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(
RemoteTestRunner.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(
ResultLoader.java:59)
    at
com.ibatis.sqlmap.engine.mapping.result.BasicResultMap.getNestedSelectMappingValue
(BasicResultMap.java:502)
    at com.ibatis.sqlmap.engine.mapping.result.BasicResultMap.getResults(
BasicResultMap.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.sqlExecuteQuery(
GeneralStatement.java:205)
    at
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryWithCallback
(GeneralStatement.java:173)
    ... 44 more



-- 
// Jonathan