private IResultMetaData getRuntimeMetaData(DataSetHandle dataSetHandle) throws BirtException {
Map dataSetBindingMap = new HashMap();
Map dataSourceBindingMap = new HashMap();
DataSetHandle handle = null;
if (sessionContext.getModuleHandle() != null
&& sessionContext.getModuleHandle().getAllDataSets() != null) {
for (Object o : sessionContext.getModuleHandle().getAllDataSets()) {
DataSetHandle dsh = (DataSetHandle) o;
if (dsh.getQualifiedName().equals(dataSetHandle.getQualifiedName())) {
handle = dsh;
break;
}
}
}
// First clear all property bindings so that the data set can be executed against design time
// properties
clearPropertyBindingMap(handle, dataSetBindingMap, dataSourceBindingMap);
try {
QueryDefinition query = new QueryDefinition();
query.setDataSetName(dataSetHandle.getQualifiedName());
query.setMaxRows(1);
query.setAutoBinding(true);
IResultMetaData metaData =
new QueryExecutionHelper(dataEngine, modelAdaptor, sessionContext, false, this.session)
.executeQuery(query)
.getResultMetaData();
addResultSetColumn(dataSetHandle, metaData);
if (MetaDataPopulator.needsUseResultHint(dataSetHandle, metaData)) {
metaData =
new QueryExecutionHelper(dataEngine, modelAdaptor, sessionContext, true, this.session)
.executeQuery(query)
.getResultMetaData();
}
return metaData;
} finally {
// restore property bindings
resetPropertyBinding(handle, dataSetBindingMap, dataSourceBindingMap);
}
}
