public static int serDiccGroupByToWriter( ResultSet rs, Writer writer, int maxRows, String idPor, String[] idAcumulados, String campoAcumuladoNombre) { int rowsCount = 0; try { ArrayList<String> acumulado = null; String idActual = null; StringBuilder reg = null; reg = new StringBuilder(); String value = ""; if (rs != null) { ResultSetMetaData rsm = rs.getMetaData(); int countCol = rsm.getColumnCount(); String name = ""; for (int i = 1; i <= countCol; i++) { name = rsm.getColumnName(i); reg.append(name.toLowerCase()).append("\t"); } reg.append(campoAcumuladoNombre); writer.write(reg.toString() + EOL); while (rs.next()) { if (idActual == null) { reg = new StringBuilder(); acumulado = new ArrayList<String>(); idActual = rs.getString(idPor); for (int i = 1; i <= countCol; i++) { reg.append(rs.getString(i)).append("\t"); } for (String id : idAcumulados) { value = rs.getString(id); if (!rs.wasNull()) { acumulado.add(rs.getString(id)); } } } else { if (idActual.equals(rs.getString(idPor))) { for (String id : idAcumulados) { value = rs.getString(id); if (!rs.wasNull()) { acumulado.add(rs.getString(id)); } } } else { if (acumulado.size() > 0) { for (String str : acumulado) { reg.append(str).append(","); } reg.deleteCharAt(reg.length() - 1); } reg.append(EOL); writer.write(reg.toString()); rowsCount++; if (maxRows == rowsCount) { break; } idActual = rs.getString(idPor); reg = new StringBuilder(); acumulado = new ArrayList<String>(); for (int i = 1; i <= countCol; i++) { reg.append(rs.getString(i)).append("\t"); } for (String id : idAcumulados) { value = rs.getString(id); if (!rs.wasNull()) { acumulado.add(rs.getString(id)); } } } } } if (acumulado.size() > 0) { for (String str : acumulado) { reg.append(str).append(","); } reg.deleteCharAt(reg.length() - 1); } reg.append(EOL); writer.write(reg.toString()); rowsCount++; } } catch (SQLException e) { logm("ERR", 1, "Error al escribir registros", e); } catch (IOException e) { logm("ERR", 1, "Error al escribir registros", e); } return rowsCount; }
public void closeTResultSet() { if (LOG.isDebugEnabled()) LOG.debug(serverWorkerName + ". T2 rs.close(" + stmtLabel + ") begin"); try { if (rs != null && rs.isClosed() == false) { if (LOG.isDebugEnabled()) LOG.debug(serverWorkerName + ". T2 rs before close "); rs.close(); if (LOG.isDebugEnabled()) LOG.debug(serverWorkerName + ". T2 rs after close "); } } catch (Exception e) { } rs = null; if (LOG.isDebugEnabled()) LOG.debug(serverWorkerName + ". T2 rs.close(" + stmtLabel + ") end"); }
public static String[] dbRsColumnNames(ResultSet resultset) throws SQLException { java.util.Vector<String> rv = new java.util.Vector<String>(); if (resultset != null) { logm("DBG", 9, "ColumnCount=0 Calculando cantidad columnas desde metadata", null); ResultSetMetaData md = resultset.getMetaData(); int columnCount = md.getColumnCount(); logm("DBG", 9, "ColumnCount", columnCount); for (int i = 1; i <= columnCount; i++) { rv.add(md.getColumnName(i).toLowerCase()); } } String[] r = rv.toArray(new String[0]); logm("DBG", 9, "DB dbRsColumnNames", r); return r; }
// *************************************************************************** // S: db public static int dbRsColumnCount(ResultSet rs) throws SQLException { return rs.getMetaData().getColumnCount(); }
public static int serRsCsvToWriter( ResultSet resultset, String[] columnNames, Writer writer, int maxRows, String separator) { int counter = 0; if (resultset != null) { if (columnNames == null) { try { logm("NFO", 9, "CSV titulos, obteniendo desde metadata", null); columnNames = dbRsColumnNames(resultset); } catch (SQLException e) { logmex("ERR", 1, "CSV titulos, obteniendo desde metadata", null, e); return -1; } } logm("DBG", 7, "CSV titulos", columnNames); // A: columnCount tiene el valor especificado o el default int columnCount = columnNames.length; // Itero el resultset escribiendo el output try { // XXX:OPCION escape separator si aparece en un valor? logm("DBG", 4, "ESCRIBIENDO ARCHIVO", resultset); for (int i = 0; i < columnCount - 1; i++) { logm("DBG", 9, "ESCRIBE COL: ", columnNames[i]); writer.write(columnNames[i]); writer.write(separator); } writer.write(columnNames[columnCount - 1]); writer.write(EOL); logm("DBG", 4, "SE ESCRIBIO LINEA DE COLUMNAS", null); logm("DBG", 4, "COUNTER", counter); logm("DBG", 4, "MAXROWS", maxRows); // A: escribi los nombres de las columnas boolean hasNext = resultset.next(); logm("DBG", 4, "NEXT", hasNext); while ((counter < maxRows || maxRows < 0) && hasNext) { logm("DBG", 4, "Escribiendo fila :", counter); String buf; for (int i = 1; i < columnCount; i++) { if ((buf = resultset.getString(i)) != null) { writer.write(buf); } logm("DBG", 9, "STR", buf); writer.write(separator); } if ((buf = resultset.getString(columnCount)) != null) { writer.write(buf); } logm("DBG", 9, "STR", buf); writer.write(EOL); counter++; // XXX:loguear un cartelito ej. cada 1000 hasNext = resultset.next(); } logm("DBG", 2, "termino de escribir lineas", null); } catch (SQLException s) { logmex("ERR", 0, "DB leyendo resultset para CSV", null, s); return -1; } catch (IOException e) { logmex("ERR", 0, "FILE WRITER CSV OUTPUT writing", null, e); return -1; } } else { logm("NFO", 3, "DB FILE CSV RESULTSET IS NULL, was expected?", null); } try { writer.close(); } catch (IOException e) { logmex("ERR", 0, "FILE WRITER CSV OUTPUT closing", null, e); return -1; } return counter; }