/**
* @param meta
* @throws BirtException
*/
private void addResultSetColumn(DataSetHandle dataSetHandle, IResultMetaData meta)
throws BirtException {
if (meta == null || !(dataSetHandle instanceof OdaDataSetHandle)) return;
Set computedColumnNameSet = new HashSet();
Iterator computedIter = dataSetHandle.computedColumnsIterator();
while (computedIter.hasNext()) {
ComputedColumnHandle handle = (ComputedColumnHandle) computedIter.next();
computedColumnNameSet.add(handle.getName());
}
HashSet orgColumnNameSet = new HashSet();
HashSet uniqueColumnNameSet = new HashSet();
PropertyHandle handle = dataSetHandle.getPropertyHandle(DataSetHandle.RESULT_SET_PROP);
for (int i = 1; i <= meta.getColumnCount(); i++) {
OdaResultSetColumn rsColumn = new OdaResultSetColumn();
String uniqueName;
if (!computedColumnNameSet.contains(meta.getColumnName(i))) {
uniqueName =
MetaDataPopulator.getUniqueName(
orgColumnNameSet, uniqueColumnNameSet, meta.getColumnName(i), i - 1);
rsColumn.setColumnName(uniqueName);
if (meta.getColumnType(i) != DataType.ANY_TYPE)
rsColumn.setDataType(DataAdapterUtil.adapterToModelDataType(meta.getColumnType(i)));
rsColumn.setNativeName(meta.getColumnName(i));
rsColumn.setPosition(Integer.valueOf(i));
handle.addItem(rsColumn);
uniqueColumnNameSet.add(uniqueName);
}
}
}
/**
* @param dataSetName
* @return
* @throws BirtException
*/
private IResultMetaData getRealMetaData(DataSetHandle dataSetHandle) throws BirtException {
IResultMetaData metaData = MetaDataPopulator.retrieveResultMetaData(dataSetHandle);
if (metaData == null) metaData = getRuntimeMetaData(dataSetHandle);
if (metaData != null && !(dataSetHandle instanceof ScriptDataSetHandle))
clearUnusedData(dataSetHandle, metaData);
return metaData;
}
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);
}
}
