private void bindPhysicalToLogical(String logicalName, Column physicalColumn) throws DuplicateMappingException {
final String physicalName = physicalColumn.getQuotedName();
final String existingLogicalName = ( String ) physicalToLogical.put( physicalName, logicalName );
if ( existingLogicalName != null && ! existingLogicalName.equals( logicalName ) ) {
throw new DuplicateMappingException(
" Table [" + tableName + "] contains phyical column name [" + physicalName
+ "] represented by different logical column names: [" + existingLogicalName
+ "], [" + logicalName + "]",
"column-binding",
tableName + "." + physicalName