Nested iterate tags does not work
---------------------------------
Key: IBATIS-281
URL: http://issues.apache.org/jira/browse/IBATIS-281
Project: iBatis for Java
Type: Bug
Components: SQL Maps
Versions: 2.1.7
Reporter: Christian Poitras
No nested iterate tags work. The second iterate tag is not supported and
produces the following error.
java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
at java.lang.Integer.parseInt(Integer.java:489)
at java.lang.Integer.parseInt(Integer.java:518)
at com.ibatis.common.beans.BaseProbe.getIndexedProperty(BaseProbe.java:51)
at
com.ibatis.common.beans.ComplexBeanProbe.getProperty(ComplexBeanProbe.java:297)
at com.ibatis.common.beans.ComplexBeanProbe.getObject(ComplexBeanProbe.java:188)
at com.ibatis.common.beans.GenericProbe.getObject(GenericProbe.java:76)
at
com.ibatis.sqlmap.engine.mapping.sql.dynamic.elements.IterateTagHandler.doStartFragment(IterateTagHandler.java:34)
at
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.processBodyChildren(DynamicSql.java:157)
at
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.processBodyChildren(DynamicSql.java:160)
at
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.processBodyChildren(DynamicSql.java:99)
at
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.process(DynamicSql.java:79)
at
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.getParameterMap(DynamicSql.java:61)
at
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryWithCallback(GeneralStatement.java:156)
at
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryForList(GeneralStatement.java:123)
at
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java:610)
at
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java:584)
at
com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForList(SqlMapSessionImpl.java:101)
at
com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.queryForList(SqlMapClientImpl.java:78)
at
com.ibatis.dao.client.template.SqlMapDaoTemplate.queryForList(SqlMapDaoTemplate.java:203)
at
ca.qc.ircm.lana.persistence.sqlmapdao.SpotSqlMapDao.getSpotsInter(SpotSqlMapDao.java:159)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.ibatis.dao.engine.impl.DaoProxy.invoke(DaoProxy.java:72)
at $Proxy14.getSpotsInter(Unknown Source)
at
ca.qc.ircm.lana.service.InterpretationService.getSpotsInter(InterpretationService.java:82)
at TEST.testInterpretation.main(testInterpretation.java:111)
It seems the second iterate tag cannot have a property of this type.
<iterate property="list" >
<iterate property="list[].list">
<iterate>
</iterate>
On the nested iterate, SQL Maps does not add the number in attribute property
"list[].list" and tries to call a getter for parameterClass.getList[]() and
this is not allowed and produces the error.
This could be prevented in the IterateTagHandler class (doStartFragment method)
by adding code that replaces "[]" in the property attribute by values of
IterateContext that are parents of the current tag (for multiple nested
iterate).
Other code would need to be updated since using a property in the second list
also causes SQL Map to crash even it IterateTagHandler is patched.
<iterate property="list" >
<iterate property="list[].list">
#list[].list[].someProperty#
<iterate>
</iterate>
I produced a patch that can correct the problem. I will include it in a future
message.
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