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https://issues.apache.org/jira/browse/IBATIS-620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12739392#action_12739392
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Yuan Tao commented on IBATIS-620:
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The fix solution imported other bugs. so now, I have no idea to solve it.
Should I need convert the result SqlSession.selectOne to Integer manually.
> "select count(*) from table" return BigDecimal value in Oracle
> --------------------------------------------------------------
>
> Key: IBATIS-620
> URL: https://issues.apache.org/jira/browse/IBATIS-620
> Project: iBatis for Java
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Yuan Tao
>
> User SqlSession.selectOne for the sql "select count(*) from table" defined in
> mapping file should return Integer, but return BigDecimal in Oracle.
> The bug seems happen int DefaultResultSetHandler.mapResults method. There are
> codes below:
> ...
> for (int i = 1, n = rsmd.getColumnCount(); i <= n; i++) {
> boolean useLabel =
> mappedStatement.getConfiguration().isUseColumnLabel();
> String columnLabel = (useLabel ? rsmd.getColumnLabel(i) :
> rsmd.getColumnName(i));
> columnLabel = columnLabel.toUpperCase();
> String propName = metaResultObject.findProperty(columnLabel);
> colSet.add(columnLabel);
> if (propName != null) {
> propSet.add(propName);
> Class javaType = metaResultObject.getSetterType(propName);
> // This line will return Object if the resultObject is
> PlatformTypeHolder
>
> TypeHandler typeHandler =
> typeHandlerRegistry.getTypeHandler(javaType);
> ResultMapping resultMapping = new
> ResultMapping.Builder(configuration, propName, columnLabel, typeHandler)
> .javaType(javaType).build();
> autoMappings.put(propName, resultMapping);
> }
> }
> ...
> Maybe this bug can fixed by adding the code below after "Class javaType =
> metaResultObject.getSetterType(propName);"
> if (javaType.isAssignableFrom(rm.getType()))
> javaType = rm.getType();
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