New way of checking for new versions
This commit is contained in:
Salvo 'LtWorf' Tomaselli
@@ -1,38 +1,43 @@
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# -*- coding: utf-8 -*-
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# Relational
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# Copyright (C) 2008 Salvo "LtWorf" Tomaselli
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#
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#
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# Relational 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 3 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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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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# author Salvo "LtWorf" Tomaselli <tiposchi@tiscali.it>
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import sys
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import os
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import pickle
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try:
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from PyQt4 import QtCore, QtGui
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except:
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from PySide import QtCore, QtGui
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from relational import relation, parser, optimizer,rtypes
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import sys
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import about
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import survey
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import os
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import surveyForm
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import maingui
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import compatibility
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class relForm(QtGui.QMainWindow):
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def __init__(self,ui):
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QtGui.QMainWindow.__init__(self)
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self.About=None
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@@ -42,23 +47,26 @@ class relForm(QtGui.QMainWindow):
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self.selectedRelation=None
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self.ui=ui
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self.qcounter=1 #Query counter
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self.settings = QtCore.QSettings()
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def checkVersion(self):
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from relational import maintenance
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online=maintenance.check_latest_version()
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if online>version:
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r=QtGui.QApplication.translate("Form", "New version available online: %s." % online)
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elif online==version:
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r=QtGui.QApplication.translate("Form", "Latest version installed.")
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else:
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r=QtGui.QApplication.translate("Form", "You are using an unstable version.")
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QtGui.QMessageBox.information(self,QtGui.QApplication.translate("Form", "Version"),r)
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def load_query(self,*index):
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self.ui.txtQuery.setText(self.savedQ.itemData(index[0]).toString())
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def undoOptimize(self):
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'''Undoes the optimization on the query, popping one item from the undo list'''
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if self.undo!=None:
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@@ -67,37 +75,37 @@ class relForm(QtGui.QMainWindow):
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def optimize(self):
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'''Performs all the possible optimizations on the query'''
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self.undo=self.ui.txtQuery.text() #Storing the query in undo list
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query=compatibility.get_py_str(self.ui.txtQuery.text())
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try:
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result=optimizer.optimize_all(query,self.relations)
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compatibility.set_utf8_text(self.ui.txtQuery,result)
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except Exception, e:
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QtGui.QMessageBox.information(None,QtGui.QApplication.translate("Form", "Error"),"%s\n%s" % (QtGui.QApplication.translate("Form", "Check your query!"),e.__str__()) )
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def resumeHistory(self,item):
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itm=compatibility.get_py_str(item.text()).split(' = ',1)
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compatibility.set_utf8_text(self.ui.txtResult,itm[0])
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compatibility.set_utf8_text(self.ui.txtQuery,itm[1])
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compatibility.set_utf8_text(self.ui.txtQuery,itm[1])
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def execute(self):
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'''Executes the query'''
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query=compatibility.get_py_str(self.ui.txtQuery.text())
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res_rel=compatibility.get_py_str(self.ui.txtResult.text())#result relation's name
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if not rtypes.is_valid_relation_name(res_rel):
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QtGui.QMessageBox.information(self,QtGui.QApplication.translate("Form", "Error"),QtGui.QApplication.translate("Form", "Wrong name for destination relation."))
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return
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try:
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#Converting string to utf8 and then from qstring to normal string
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expr=parser.parse(query)#Converting expression to python code
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print query,"-->" , expr #Printing debug
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result=eval(expr,self.relations) #Evaluating the expression
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self.relations[res_rel]=result #Add the relation to the dictionary
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self.updateRelations() #update the list
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self.selectedRelation=result
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@@ -111,44 +119,44 @@ class relForm(QtGui.QMainWindow):
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item=u'%s = %s' % (compatibility.get_py_str(self.ui.txtResult.text()),compatibility.get_py_str(self.ui.txtQuery.text()))
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#item=item.decode('utf-8'))
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compatibility.add_list_item(self.ui.lstHistory,item)
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self.qcounter+=1
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compatibility.set_utf8_text(self.ui.txtResult,u"_last%d"% self.qcounter) #Sets the result relation name to none
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def showRelation(self,rel):
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'''Shows the selected relation into the table'''
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self.ui.table.clear()
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if rel==None: #No relation to show
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self.ui.table.setColumnCount(1)
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self.ui.table.headerItem().setText(0,"Empty relation")
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return
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self.ui.table.setColumnCount(len(rel.header.attributes))
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#Set content
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for i in rel.content:
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item = QtGui.QTreeWidgetItem()
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for j in range(len(i)):
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item.setText(j, i[j])
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self.ui.table.addTopLevelItem(item)
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#Sets columns
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for i in range(len(rel.header.attributes)):
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self.ui.table.headerItem().setText(i,rel.header.attributes[i])
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self.ui.table.resizeColumnToContents(i) #Must be done in order to avoid too small columns
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def printRelation(self,item):
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self.selectedRelation=self.relations[compatibility.get_py_str(item.text())]
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self.showRelation(self.selectedRelation)
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def showAttributes(self,item):
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'''Shows the attributes of the selected relation'''
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rel=compatibility.get_py_str(item.text())
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self.ui.lstAttributes.clear()
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for j in self.relations[rel].header.attributes:
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self.ui.lstAttributes.addItem (j)
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def updateRelations(self):
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self.ui.lstRelations.clear()
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for i in self.relations:
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@@ -156,8 +164,8 @@ class relForm(QtGui.QMainWindow):
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self.ui.lstRelations.addItem(i)
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def saveRelation(self):
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filename = QtGui.QFileDialog.getSaveFileName(self,QtGui.QApplication.translate("Form", "Save Relation"),"",QtGui.QApplication.translate("Form", "Relations (*.csv)"))
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filename=compatibility.get_filename(filename)
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filename=compatibility.get_filename(filename)
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if (len(filename)==0):#Returns if no file was selected
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return
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self.selectedRelation.save(filename)
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@@ -176,36 +184,45 @@ class relForm(QtGui.QMainWindow):
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def newRelation(self):
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import creator
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result=creator.edit_relation()
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if result==None:
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return
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res=QtGui.QInputDialog.getText(
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self,
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self,
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QtGui.QApplication.translate("Form", "New relation"),
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QtGui.QApplication.translate("Form", "Insert the name for the new relation"),
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QtGui.QLineEdit.Normal,'')
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if res[1]==False or len(res[0])==0:
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return
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#Patch provided by Angelo 'Havoc' Puglisi
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name=compatibility.get_py_str(res[0])
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if not rtypes.is_valid_relation_name(name):
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r=QtGui.QApplication.translate("Form", str("Wrong name for destination relation: %s." % name))
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QtGui.QMessageBox.information(self,QtGui.QApplication.translate("Form", "Error"),r)
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return
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try:
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self.relations[name]=result
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except Exception, e:
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print e
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QtGui.QMessageBox.information(None,QtGui.QApplication.translate("Form", "Error"),"%s\n%s" % (QtGui.QApplication.translate("Form", "Check your query!"),e.__str__()) )
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return
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self.updateRelations()
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self.updateRelations()
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def closeEvent(self, event):
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self.save_settings()
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event.accept()
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def save_settings(self):
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#self.settings.setValue("width",)
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pass
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def restore_settings(self):
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#self.settings.value('session_name','default').toString()
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pass
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def showSurvey(self):
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if self.Survey==None:
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self.Survey=surveyForm.surveyForm()
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@@ -214,6 +231,7 @@ class relForm(QtGui.QMainWindow):
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ui.setupUi(self.Survey)
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self.Survey.setDefaultValues()
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self.Survey.show()
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def showAbout(self):
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if self.About==None:
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self.About = QtGui.QDialog()
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@@ -233,35 +251,35 @@ class relForm(QtGui.QMainWindow):
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#Default relation's name
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f=filename.split('/') #Split the full path
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defname=f[len(f)-1].lower() #Takes only the lowercase filename
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if len(defname)==0:
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return
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if (defname.endswith(".csv")): #removes the extension
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defname=defname[:-4]
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if name==None: #Prompt dialog to insert name for the relation
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res=QtGui.QInputDialog.getText(self, QtGui.QApplication.translate("Form", "New relation"),QtGui.QApplication.translate("Form", "Insert the name for the new relation"),
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QtGui.QLineEdit.Normal,defname)
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if res[1]==False or len(res[0])==0:
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return
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#Patch provided by Angelo 'Havoc' Puglisi
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name=compatibility.get_py_str(res[0])
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if not rtypes.is_valid_relation_name(name):
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r=QtGui.QApplication.translate("Form", str("Wrong name for destination relation: %s." % name))
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QtGui.QMessageBox.information(self,QtGui.QApplication.translate("Form", "Error"),r)
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return
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try:
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self.relations[name]=relation.relation(filename)
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except Exception, e:
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print e
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QtGui.QMessageBox.information(None,QtGui.QApplication.translate("Form", "Error"),"%s\n%s" % (QtGui.QApplication.translate("Form", "Check your query!"),e.__str__()) )
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return
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self.updateRelations()
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def addProduct(self):
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@@ -290,8 +308,7 @@ class relForm(QtGui.QMainWindow):
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self.addSymbolInQuery(u"ρ")
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def addArrow(self):
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self.addSymbolInQuery(u"➡")
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def addSymbolInQuery(self,symbol):
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self.ui.txtQuery.insert(symbol)
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self.ui.txtQuery.setFocus()
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