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110 lines
3.5 KiB
Python
110 lines
3.5 KiB
Python
# -*- coding: utf-8 -*-
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"""
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/***************************************************************************
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Name : DB Manager
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Description : Database manager plugin for QGIS
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Date : May 23, 2011
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copyright : (C) 2011 by Giuseppe Sucameli
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email : brush.tyler@gmail.com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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"""
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from qgis.core import QgsTask
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from ..plugin import BaseError
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from ..data_model import TableDataModel, SqlResultModel, SqlResultModelAsync
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from .plugin import SLDatabase
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class SLTableDataModel(TableDataModel):
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def __init__(self, table, parent=None):
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TableDataModel.__init__(self, table, parent)
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fields_txt = u", ".join(self.fields)
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table_txt = self.db.quoteId((self.table.schemaName(), self.table.name))
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# run query and get results
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sql = u"SELECT %s FROM %s" % (fields_txt, table_txt)
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c = self.db._get_cursor()
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self.db._execute(c, sql)
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self.resdata = self.db._fetchall(c)
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c.close()
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del c
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self.fetchedFrom = 0
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self.fetchedCount = len(self.resdata)
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def _sanitizeTableField(self, field):
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# get fields, ignore geometry columns
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dataType = field.dataType.upper()
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if dataType[:5] == "MULTI":
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dataType = dataType[5:]
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if dataType[-3:] == "25D":
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dataType = dataType[:-3]
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if dataType[-10:] == "COLLECTION":
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dataType = dataType[:-10]
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if dataType in ["POINT", "LINESTRING", "POLYGON", "GEOMETRY"]:
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return u'GeometryType(%s)' % self.db.quoteId(field.name)
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return self.db.quoteId(field.name)
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def rowCount(self, index=None):
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return self.fetchedCount
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class SLSqlResultModelTask(QgsTask):
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def __init__(self, db, sql, parent):
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QgsTask.__init__(self)
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self.db = db
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self.sql = sql
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self.parent = parent
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self.error = BaseError('')
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self.model = None
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self.clone = None
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def run(self):
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try:
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self.clone = SLDatabase(None, self.db.connector.uri())
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# import time
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# self.clone.connector.connection.create_function("sleep", 1, time.sleep)
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self.model = SLSqlResultModel(self.clone, self.sql, None)
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except BaseError as e:
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self.error = e
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QgsMessageLog.logMessage(e.msg)
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return False
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return True
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def cancelQuery(self):
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if self.clone:
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self.clone.connector.cancel()
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self.cancel()
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class SLSqlResultModelAsync(SqlResultModelAsync):
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def __init__(self, db, sql, parent):
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SqlResultModelAsync.__init__(self, db, sql, parent)
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self.task = SLSqlResultModelTask(db, sql, parent)
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self.task.taskCompleted.connect(self.modelDone)
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self.task.taskTerminated.connect(self.modelDone)
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class SLSqlResultModel(SqlResultModel):
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pass
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