[ http://issues.apache.org/jira/browse/IBATIS-265?page=comments#action_12370131 ]
Stefan Friedrich commented on IBATIS-265: ----------------------------------------- Please reopen this issue, as what we want to have is a HashMap of Lists of HashMaps AND NOT a simple List of HashMaps! In this case the queryForList() is extremly not the thing we need.... By the way...the queryForList - Method is not a secret for us... > Map data into HashMaps: HashMap of List of HashMaps > --------------------------------------------------- > > Key: IBATIS-265 > URL: http://issues.apache.org/jira/browse/IBATIS-265 > Project: iBatis for Java > Type: Improvement > Reporter: Stefan Friedrich > Assignee: Sven Boden > Priority: Minor > > We tried to implement the HashMaps as results for our queries. The problem > is, that whenever a HashMap is set as the resultClass, a queryForObject is > called and so, every select can only return ONE result. In our application we > expect a list of HashMaps at certain locations. The solution for our problem > would be very simple and - in our opinion - would work with only three new > lines of code: > The Method BasicResultMap.getResults(RequestScope request, ResultSet rs) the > targetType for further calls is set: > if (resultClass == null) { > throw new SqlMapException("The result class was null when trying to get > results for ResultMap named " + getId() + "."); > } else if (Map.class.isAssignableFrom(resultClass)) { > columnValues[i] = getNestedSelectMappingValue(request, rs, mapping, > Object.class); > } else if (DomTypeMarker.class.isAssignableFrom(resultClass)) { > Class javaType = mapping.getJavaType(); > if (javaType == null) { > javaType = DomTypeMarker.class; > } > columnValues[i] = getNestedSelectMappingValue(request, rs, mapping, > javaType); > } else { > Probe p = ProbeFactory.getProbe(resultClass); > Class type = p.getPropertyTypeForSetter(resultClass, > mapping.getPropertyName()); > columnValues[i] = getNestedSelectMappingValue(request, rs, mapping, > type); > } > The part that needs to be changed is in the first "else-Statement". > if (resultClass == null) { > throw new SqlMapException("The result class was null when trying to get > results for ResultMap named " + getId() + "."); > } else if (Map.class.isAssignableFrom(resultClass)) { > Class javaType = mapping.getJavaType(); > if (javaType == null) { > javaType = Object.class; > } > columnValues[i] = getNestedSelectMappingValue(request, rs, mapping, > javaType); > } else if (DomTypeMarker.class.isAssignableFrom(resultClass)) { > Class javaType = mapping.getJavaType(); > if (javaType == null) { > javaType = DomTypeMarker.class; > } > columnValues[i] = getNestedSelectMappingValue(request, rs, mapping, > javaType); > } else { > Probe p = ProbeFactory.getProbe(resultClass); > Class type = p.getPropertyTypeForSetter(resultClass, > mapping.getPropertyName()); > columnValues[i] = getNestedSelectMappingValue(request, rs, mapping, > type); > } > As you can see, the changes would have no effect, if no javaType was set. But > for our concerns, we would set the javaType to java.util.ArrayList and > everything would be just fine! > Stefan -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
