private IResultClass mergeResultHint(List modelResultHints, IResultClass meta) {
if (modelResultHints == null || modelResultHints.isEmpty()) return meta;
IResultClass newResultClass;
try {
newResultClass = copyResultClass(meta);
} catch (Exception ex) {
return meta;
}
boolean changed = false;
int count = newResultClass.getFieldCount();
try {
for (int i = 1; i <= count; i++) {
String fieldName = newResultClass.getFieldName(i);
Class odaType = newResultClass.getFieldMetaData(i).getDataType();
for (int j = 0; j < modelResultHints.size(); j++) {
if (((IColumnDefinition) modelResultHints.get(j)).getColumnName().equals(fieldName)) {
int apiType = ((IColumnDefinition) modelResultHints.get(j)).getDataType();
if (apiType > 0 && DataTypeUtil.toApiDataType(odaType) != apiType) {
newResultClass.getFieldMetaData(i).setDataType(DataType.getClass(apiType));
changed = true;
}
break;
}
}
}
} catch (Exception ex) {
}
if (changed) return newResultClass;
else return meta;
}
/**
* @param design
* @param odaStatement
* @return
* @throws DataException
*/
private IResultClass getMetaData(IOdaDataSetDesign design, PreparedStatement odaStatement)
throws DataException {
IResultClass result = null;
if (design != null) {
if (canAccessResultSetByName(design)) {
try {
result = odaStatement.getMetaData(design.getPrimaryResultSetName());
} catch (DataException e) {
throw new DataException(
ResourceConstants.ERROR_HAPPEN_WHEN_RETRIEVE_RESULTSET,
design.getPrimaryResultSetName());
}
} else if (canAccessResultSetByNumber(design)) {
try {
result = odaStatement.getMetaData(design.getPrimaryResultSetNumber());
} catch (DataException e) {
throw new DataException(
ResourceConstants.ERROR_HAPPEN_WHEN_RETRIEVE_RESULTSET,
design.getPrimaryResultSetNumber());
}
}
}
if (result == null) result = odaStatement.getMetaData();
if (design != null) {
List hintList = design.getResultSetHints();
for (int i = 0; i < hintList.size(); i++) {
IColumnDefinition columnDefinition = (IColumnDefinition) hintList.get(i);
for (int j = 1; j <= result.getFieldCount(); j++) {
ResultFieldMetadata resultFieldMetadata = result.getFieldMetaData(j);
if (columnDefinition.getColumnName().equals(resultFieldMetadata.getName())) {
resultFieldMetadata.setAlias(columnDefinition.getAlias());
resultFieldMetadata.setAnalysisType(columnDefinition.getAnalysisType());
resultFieldMetadata.setAnalysisColumn(columnDefinition.getAnalysisColumn());
resultFieldMetadata.setIndexColumn(columnDefinition.isIndexColumn());
resultFieldMetadata.setCompressedColumn(columnDefinition.isCompressedColumn());
break;
}
}
}
}
return result;
}
private IResultClass copyResultClass(IResultClass meta) throws DataException {
List<ResultFieldMetadata> list = new ArrayList<ResultFieldMetadata>();
for (int i = 1; i <= meta.getFieldCount(); i++) {
if (!meta.getFieldName(i).equals(ExprMetaUtil.POS_NAME)) {
int m_driverPosition = meta.getFieldMetaData(i).getDriverPosition();
String m_name = meta.getFieldMetaData(i).getName();
String m_label = meta.getFieldMetaData(i).getLabel();
Class m_dataType = meta.getFieldMetaData(i).getDataType();
String m_nativeTypeName = meta.getFieldMetaData(i).getNativeTypeName();
boolean m_isCustom = meta.getFieldMetaData(i).isCustom();
Class m_driverProvidedDataType = meta.getFieldMetaData(i).getDriverProvidedDataType();
int m_analysisType = meta.getFieldMetaData(i).getAnalysisType();
String m_analysisColumn = meta.getFieldMetaData(i).getAnalysisColumn();
boolean m_indexColumn = meta.getFieldMetaData(i).isIndexColumn();
boolean m_compressedColumn = meta.getFieldMetaData(i).isCompressedColumn();
ResultFieldMetadata metadata =
new ResultFieldMetadata(
m_driverPosition,
m_name,
m_label,
m_dataType,
m_nativeTypeName,
m_isCustom,
m_analysisType,
m_analysisColumn,
m_indexColumn,
m_compressedColumn);
metadata.setDriverProvidedDataType(m_driverProvidedDataType);
metadata.setAlias(meta.getFieldMetaData(i).getAlias());
list.add(metadata);
}
}
IResultClass resultClass = new ResultClass(list);
return resultClass;
}