question: @ Override public void load ( SolrQueryRequest req , SolrQueryResponse rsp , ContentStream stream , UpdateRequestProcessor processor ) throws IOException { errHeader = "CSVLoader: input=" + stream . getSourceInfo ( ) ; Reader reader = null ; try { reader = stream . getReader ( ) ; if ( skipLines > 0 ) { if ( ! ( reader instanceof BufferedReader ) ) { reader = new BufferedReader ( reader ) ; } BufferedReader r = ( BufferedReader ) reader ; for ( int i = 0 ; i < skipLines ; i ++ ) { r . readLine ( ) ; } } CSVParser parser = new CSVParser ( reader , strategy ) ; if ( fieldnames == null ) { fieldnames = parser . getLine ( ) ; if ( fieldnames == null ) { throw new SolrException ( SolrException . ErrorCode . BAD_REQUEST , "Expected fieldnames in CSV input" ) ; } prepareFields ( ) ; } for ( ; ; ) { int line = parser . getLineNumber ( ) ; String [ ] vals = null ; try { vals = parser . getLine ( ) ; } catch ( IOException e ) { input_err ( "can't read line: " + line , null , line , e ) ; } if ( vals == null ) break ; if ( vals . length != fieldnames . length ) { input_err ( "expected " + fieldnames . length + " values but got " + vals . length , vals , line ) ; } addDoc ( line , vals ) ; } } finally { if ( reader != null ) { IOUtils . closeQuietly ( reader ) ; } } }
target:  load the CSV input 