datestex/utils/dbcsv_tool.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
# ---------------------------------------------------------------------------------------------------------
# Author : Ulrich Carmesin
# Source : gitea.ucarmesin.de
# ---------------------------------------------------------------------------------------------------------
import basic.program
import utils.config_tool
import utils.db_abstract
import basic.constants as B
import utils.path_tool
import utils.file_tool
import utils.tdata_tool

class DbFcts(utils.db_abstract.DbFcts):
  """
  This interface defines each necessary connection to any kind of database.
  The specific technique how to connect to the concrete DBMS has to be implemented in the specific tool.
  """

  def __init__(self):
    pass

  def selectRows(self, table, job):
    """ method to select rows from a database
    statement written in sql """
    sqlTable = utils.db_abstract.getSqlTable(self.comp, table)
    header = ""
    path = utils.path_tool.composePattern(job, "{env.dompath}/"+sqlTable+".csv", self.comp)
    print(path)
    tdata = {}
    data = utils.tdata_tool.readCsv(self.comp.m, job, path, self.comp)
    tdata[B.DATA_NODE_HEADER] = self.comp.conf[B.DATA_NODE_DDL][table][B.DATA_NODE_HEADER]
    if B.DATA_NODE_TABLES in data \
            and table in data[B.DATA_NODE_TABLES]\
            and B.DATA_NODE_DATA in data[B.DATA_NODE_TABLES][table]:
      tdata[B.DATA_NODE_DATA] = data[B.DATA_NODE_TABLES][table][B.DATA_NODE_DATA]
    else:
      tdata[B.DATA_NODE_DATA] = {}
    return tdata


  def deleteRows(self, table, job):
    """ method to delete rows from a database
    statement written in sql """
    verify = -1+job.getDebugLevel("db_tool")
    sqlTable = utils.db_abstract.getSqlTable(self.comp, table)
    header = ""
    path = utils.path_tool.composePattern(job, "{env.dompath}/"+sqlTable+".csv", self.comp)
    for h in self.comp.conf[B.DATA_NODE_DDL][table][B.DATA_NODE_HEADER]:
      print(h)
      header += ";"+h
    cmd = header[1:]+"\n"
    utils.file_tool.writeFileText(self.comp.m, job, path, cmd)
    self.comp.m.logInfo(cmd)


  def updateRows(self, statement):
    """ method to delete rows from a database
    statement written in sql """
    raise Exception(B.EXCEPT_NOT_IMPLEMENT)


  def insertRows(self, table, rows, job):
    """ method to insert rows into a database
    the rows will be interpreted by the ddl of the component
    """
    verify = -1+job.getDebugLevel("db_tool")
    sqlTable = utils.db_abstract.getSqlTable(self.comp, table)
    header = ""
    path = utils.path_tool.composePattern(job, "{env.dompath}/"+sqlTable+".csv", self.comp)
    if len(rows) == 0:
      return ""
    else:
      pass
    for h in self.comp.conf[B.DATA_NODE_DDL][table][B.DATA_NODE_HEADER]:
      print(h)
      header += ";"+h
    cmd = "table:" + table + header+"\n"
    print("HEADER : "+cmd)
    rowvalues = ""
    for r in rows:
      if not utils.db_abstract.isCompRow(self.comp, r):
        continue
      print("r-----------------")
      print(r)
      rowvalues = self.comp.name+":"+table
      for h in self.comp.conf[B.DATA_NODE_DDL][table][B.DATA_NODE_HEADER]:
        print("head "+h)
        if h in [B.DATA_NODE_HEADER, B.DATA_NODE_DATA]:
          continue
        print("h "+h)
        if (h in r):
          rowvalues += ";"+str(self.getDbValue(self.comp.conf[B.DATA_NODE_DDL][table][h], r[h]))
        else:
          rowvalues += ";"+str(self.getDbValue(self.comp.conf[B.DATA_NODE_DDL][table][h], ""))
        print("rv " + rowvalues)
      cmd += rowvalues+"\n"
    utils.file_tool.writeFileText(self.comp.m, job, path, cmd)
    self.comp.m.logInfo(cmd)


  def getConnector(self):
    """ add-on-method to get the connector
    this method should only called by the class itself """
    #job = basic.program.Job.getInstance()
    return ""