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"""
/***************************************************************************
Name : DB Manager
Description : Database manager plugin for QGIS
Date : May 23, 2011
copyright : (C) 2011 by Giuseppe Sucameli
email : brush.tyler@gmail.com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
"""
from qgis.core import QgsMessageLog
from ..plugin import BaseError
from ..data_model import (
TableDataModel,
SqlResultModel,
SqlResultModelAsync,
SqlResultModelTask,
)
from .plugin import SLDatabase
class SLTableDataModel(TableDataModel):
def __init__(self, table, parent=None):
TableDataModel.__init__(self, table, parent)
fields_txt = ", ".join(self.fields)
table_txt = self.db.quoteId((self.table.schemaName(), self.table.name))
# run query and get results
sql = f"SELECT {fields_txt} FROM {table_txt}"
c = self.db._get_cursor()
self.db._execute(c, sql)
self.resdata = self.db._fetchall(c)
c.close()
del c
self.fetchedFrom = 0
self.fetchedCount = len(self.resdata)
def _sanitizeTableField(self, field):
# get fields, ignore geometry columns
dataType = field.dataType.upper()
if dataType[:5] == "MULTI":
dataType = dataType[5:]
if dataType[-3:] == "25D":
dataType = dataType[:-3]
if dataType[-10:] == "COLLECTION":
dataType = dataType[:-10]
if dataType in ["POINT", "LINESTRING", "POLYGON", "GEOMETRY"]:
return "GeometryType(%s)" % self.db.quoteId(field.name)
return self.db.quoteId(field.name)
def rowCount(self, index=None):
return self.fetchedCount
class SLSqlResultModelTask(SqlResultModelTask):
def __init__(self, db, sql, parent):
super().__init__(db, sql, parent)
self.clone = None
def run(self):
try:
self.clone = SLDatabase(None, self.db.connector.uri())
self.model = SLSqlResultModel(self.clone, self.sql, None)
except BaseError as e:
self.error = e
QgsMessageLog.logMessage(e.msg)
return False
return True
def cancel(self):
if self.clone:
self.clone.connector.cancel()
SqlResultModelTask.cancel(self)
class SLSqlResultModelAsync(SqlResultModelAsync):
def __init__(self, db, sql, parent):
super().__init__()
self.task = SLSqlResultModelTask(db, sql, parent)
self.task.taskCompleted.connect(self.modelDone)
self.task.taskTerminated.connect(self.modelDone)
class SLSqlResultModel(SqlResultModel):
pass
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