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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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# Relation 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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# 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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# 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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# author Salvo "LtWorf" Tomaselli <tiposchi@tiscali.it>
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from PyQt4 import QtCore, QtGui
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import relation
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import parser
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import sys
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import about
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class Ui_Form(object):
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def __init__(self):
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self.About=None
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self.relations={} #Dictionary for relations
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def execute(self):
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try:
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#Converting string to utf8 and then from qstring to normal string
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query=str(self.txtQuery.text().toUtf8())
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expr=parser.parse(query)
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print query,"-->" , expr
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result=eval(expr,self.relations)
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res_rel=str(self.txtResult.text())#result relation's name
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self.txtResult.setText("")
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if len(res_rel)==0:
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res_rel="last_"
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self.relations[res_rel]=result
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self.updateRelations()
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self.showRelation(result)
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except:
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QtGui.QMessageBox.information(None,QtGui.QApplication.translate("Form", "Error"),QtGui.QApplication.translate("Form", "Check your query!") )
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def showRelation(self,rel):
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self.table.clear()
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if rel==None:
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self.table.setColumnCount(1)
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self.table.headerItem().setText(0,"Empty relation")
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return
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self.table.setColumnCount(len(rel.header.attributes))
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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.table.addTopLevelItem(item)
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for i in range(len(rel.header.attributes)):
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self.table.headerItem().setText(i,rel.header.attributes[i])
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self.table.resizeColumnToContents(i)
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def printRelation(self,*rel):
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for i in rel:
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self.showRelation(self.relations[str(i.text().toUtf8())])
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def showAttributes(self,*other):
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for i in other:
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rel=str(i.text().toUtf8())
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self.lstAttributes.clear()
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for j in self.relations[rel].header.attributes:
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self.lstAttributes.addItem (j)
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def updateRelations(self):
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self.lstRelations.clear()
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for i in self.relations:
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if i != "__builtins__":
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self.lstRelations.addItem(i)
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def unloadRelation(self):
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for i in self.lstRelations.selectedItems():
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del self.relations[str(i.text().toUtf8())]
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self.updateRelations()
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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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ui = about.Ui_Dialog()
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ui.setupUi(self.About)
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self.About.show()
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def loadRelation(self):
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res=QtGui.QInputDialog.getText(None, QtGui.QApplication.translate("Form", "New relation"),QtGui.QApplication.translate("Form", "Insert the name for the new relation"))
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if res[1]==False:
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return
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filename = QtGui.QFileDialog.getOpenFileName(None,QtGui.QApplication.translate("Form", "Load Relation"),"",QtGui.QApplication.translate("Form", "Relations (*.tlb);;Text Files (*.txt);;All Files (*)"))
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self.relations[str(res[0].toUtf8())]=relation.relation(filename)
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self.updateRelations()
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def addProduct(self):
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self.txtQuery.insert(u"*")
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self.txtQuery.setFocus()
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def addDifference(self):
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self.txtQuery.insert(u"-")
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self.txtQuery.setFocus()
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def addUnion(self):
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self.txtQuery.insert(u"ᑌ")
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self.txtQuery.setFocus()
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def addIntersection(self):
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self.txtQuery.insert(u"ᑎ")
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self.txtQuery.setFocus()
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def addOLeft(self):
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self.txtQuery.insert(u"ᐅLEFTᐊ")
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self.txtQuery.setFocus()
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def addJoin(self):
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self.txtQuery.insert(u"ᐅᐊ")
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self.txtQuery.setFocus()
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def addORight(self):
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self.txtQuery.insert(u"ᐅRIGHTᐊ")
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self.txtQuery.setFocus()
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def addOuter(self):
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self.txtQuery.insert(u"ᐅFULLᐊ")
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self.txtQuery.setFocus()
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def addProjection(self):
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self.txtQuery.insert(u"π")
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self.txtQuery.setFocus()
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def addSelection(self):
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self.txtQuery.insert(u"σ")
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self.txtQuery.setFocus()
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def addRename(self):
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self.txtQuery.insert(u"ρ")
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self.txtQuery.setFocus()
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def addArrow(self):
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self.txtQuery.insert(u"➡")
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self.txtQuery.setFocus()
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def setupUi(self, Form):
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Form.setObjectName("Form")
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Form.resize(932,592)
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Form.setMinimumSize(QtCore.QSize(100,50))
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self.verticalLayout_7 = QtGui.QVBoxLayout(Form)
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self.verticalLayout_7.setObjectName("verticalLayout_7")
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self.horizontalLayout_4 = QtGui.QHBoxLayout()
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self.horizontalLayout_4.setObjectName("horizontalLayout_4")
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self.verticalLayout_4 = QtGui.QVBoxLayout()
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self.verticalLayout_4.setObjectName("verticalLayout_4")
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self.groupBox_4 = QtGui.QGroupBox(Form)
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self.groupBox_4.setObjectName("groupBox_4")
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self.verticalLayout_8 = QtGui.QVBoxLayout(self.groupBox_4)
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self.verticalLayout_8.setObjectName("verticalLayout_8")
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self.cmdAbout = QtGui.QPushButton(self.groupBox_4)
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self.cmdAbout.setObjectName("cmdAbout")
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self.verticalLayout_8.addWidget(self.cmdAbout)
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self.verticalLayout_4.addWidget(self.groupBox_4)
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self.groupBox = QtGui.QGroupBox(Form)
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self.groupBox.setObjectName("groupBox")
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self.verticalLayout_6 = QtGui.QVBoxLayout(self.groupBox)
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self.verticalLayout_6.setObjectName("verticalLayout_6")
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self.verticalLayout = QtGui.QVBoxLayout()
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self.verticalLayout.setObjectName("verticalLayout")
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self.cmdProduct = QtGui.QPushButton(self.groupBox)
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self.cmdProduct.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdProduct.setObjectName("cmdProduct")
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self.verticalLayout.addWidget(self.cmdProduct)
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self.cmdDifference = QtGui.QPushButton(self.groupBox)
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self.cmdDifference.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdDifference.setObjectName("cmdDifference")
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self.verticalLayout.addWidget(self.cmdDifference)
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self.cmdUnion = QtGui.QPushButton(self.groupBox)
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self.cmdUnion.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdUnion.setObjectName("cmdUnion")
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self.verticalLayout.addWidget(self.cmdUnion)
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self.cmdIntersection = QtGui.QPushButton(self.groupBox)
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self.cmdIntersection.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdIntersection.setObjectName("cmdIntersection")
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self.verticalLayout.addWidget(self.cmdIntersection)
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self.cmdJoin = QtGui.QPushButton(self.groupBox)
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self.cmdJoin.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdJoin.setObjectName("cmdJoin")
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self.verticalLayout.addWidget(self.cmdJoin)
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self.cmdOuterLeft = QtGui.QPushButton(self.groupBox)
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self.cmdOuterLeft.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdOuterLeft.setObjectName("cmdOuterLeft")
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self.verticalLayout.addWidget(self.cmdOuterLeft)
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self.cmdOuterRight = QtGui.QPushButton(self.groupBox)
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self.cmdOuterRight.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdOuterRight.setObjectName("cmdOuterRight")
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self.verticalLayout.addWidget(self.cmdOuterRight)
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self.cmdOuter = QtGui.QPushButton(self.groupBox)
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self.cmdOuter.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdOuter.setObjectName("cmdOuter")
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self.verticalLayout.addWidget(self.cmdOuter)
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self.cmdProjection = QtGui.QPushButton(self.groupBox)
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self.cmdProjection.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdProjection.setObjectName("cmdProjection")
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self.verticalLayout.addWidget(self.cmdProjection)
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self.cmdSelection = QtGui.QPushButton(self.groupBox)
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self.cmdSelection.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdSelection.setObjectName("cmdSelection")
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self.verticalLayout.addWidget(self.cmdSelection)
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self.cmdRename = QtGui.QPushButton(self.groupBox)
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self.cmdRename.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdRename.setObjectName("cmdRename")
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self.verticalLayout.addWidget(self.cmdRename)
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self.cmdArrow = QtGui.QPushButton(self.groupBox)
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self.cmdArrow.setMaximumSize(QtCore.QSize(16777215,16777215))
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self.cmdArrow.setObjectName("cmdArrow")
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self.verticalLayout.addWidget(self.cmdArrow)
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self.verticalLayout_6.addLayout(self.verticalLayout)
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self.verticalLayout_4.addWidget(self.groupBox)
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spacerItem = QtGui.QSpacerItem(20,40,QtGui.QSizePolicy.Minimum,QtGui.QSizePolicy.Expanding)
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self.verticalLayout_4.addItem(spacerItem)
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self.horizontalLayout_4.addLayout(self.verticalLayout_4)
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self.table = QtGui.QTreeWidget(Form) #QtGui.QTableView(Form)
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self.table.setAlternatingRowColors(True)
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self.table.setRootIsDecorated(False)
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self.table.setObjectName("table")
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self.showRelation(None)
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self.horizontalLayout_4.addWidget(self.table)
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self.verticalLayout_3 = QtGui.QVBoxLayout()
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self.verticalLayout_3.setObjectName("verticalLayout_3")
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self.groupBox_2 = QtGui.QGroupBox(Form)
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self.groupBox_2.setMaximumSize(QtCore.QSize(200,16777215))
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self.groupBox_2.setObjectName("groupBox_2")
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self.verticalLayout_5 = QtGui.QVBoxLayout(self.groupBox_2)
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self.verticalLayout_5.setObjectName("verticalLayout_5")
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self.lstRelations = QtGui.QListWidget(self.groupBox_2)
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self.lstRelations.setMaximumSize(QtCore.QSize(300,16777215))
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self.lstRelations.setObjectName("lstRelations")
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self.verticalLayout_5.addWidget(self.lstRelations)
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self.cmdLoad = QtGui.QPushButton(self.groupBox_2)
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self.cmdLoad.setObjectName("cmdLoad")
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self.verticalLayout_5.addWidget(self.cmdLoad)
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self.cmdUnload = QtGui.QPushButton(self.groupBox_2)
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self.cmdUnload.setObjectName("cmdUnload")
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self.verticalLayout_5.addWidget(self.cmdUnload)
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self.verticalLayout_3.addWidget(self.groupBox_2)
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self.groupBox_3 = QtGui.QGroupBox(Form)
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self.groupBox_3.setMaximumSize(QtCore.QSize(200,16777215))
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self.groupBox_3.setObjectName("groupBox_3")
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self.horizontalLayout_6 = QtGui.QHBoxLayout(self.groupBox_3)
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self.horizontalLayout_6.setObjectName("horizontalLayout_6")
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self.lstAttributes = QtGui.QListWidget(self.groupBox_3)
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self.lstAttributes.setMaximumSize(QtCore.QSize(300,16777215))
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self.lstAttributes.setObjectName("lstAttributes")
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self.horizontalLayout_6.addWidget(self.lstAttributes)
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self.verticalLayout_3.addWidget(self.groupBox_3)
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self.horizontalLayout_4.addLayout(self.verticalLayout_3)
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self.verticalLayout_7.addLayout(self.horizontalLayout_4)
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self.horizontalLayout = QtGui.QHBoxLayout()
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self.horizontalLayout.setObjectName("horizontalLayout")
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self.label = QtGui.QLabel(Form)
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self.label.setObjectName("label")
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self.horizontalLayout.addWidget(self.label)
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self.txtResult = QtGui.QLineEdit(Form)
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self.txtResult.setMaximumSize(QtCore.QSize(70,16777215))
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self.txtResult.setObjectName("txtResult")
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self.horizontalLayout.addWidget(self.txtResult)
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self.label_2 = QtGui.QLabel(Form)
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self.label_2.setObjectName("label_2")
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self.horizontalLayout.addWidget(self.label_2)
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self.txtQuery = QtGui.QLineEdit(Form)
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self.txtQuery.setObjectName("txtQuery")
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self.horizontalLayout.addWidget(self.txtQuery)
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self.cmdExecute = QtGui.QPushButton(Form)
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self.cmdExecute.setAutoDefault(False)
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self.cmdExecute.setDefault(True)
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self.cmdExecute.setFlat(False)
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self.cmdExecute.setObjectName("cmdExecute")
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self.horizontalLayout.addWidget(self.cmdExecute)
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self.verticalLayout_7.addLayout(self.horizontalLayout)
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self.label.setBuddy(self.txtResult)
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self.label_2.setBuddy(self.txtQuery)
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self.retranslateUi(Form)
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QtCore.QObject.connect(self.txtQuery,QtCore.SIGNAL("returnPressed()"),self.execute)
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QtCore.QObject.connect(self.cmdAbout,QtCore.SIGNAL("clicked()"),self.showAbout)
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QtCore.QObject.connect(self.cmdProduct,QtCore.SIGNAL("clicked()"),self.addProduct)
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QtCore.QObject.connect(self.cmdDifference,QtCore.SIGNAL("clicked()"),self.addDifference)
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QtCore.QObject.connect(self.cmdUnion,QtCore.SIGNAL("clicked()"),self.addUnion)
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QtCore.QObject.connect(self.cmdIntersection,QtCore.SIGNAL("clicked()"),self.addIntersection)
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QtCore.QObject.connect(self.cmdOuterLeft,QtCore.SIGNAL("clicked()"),self.addOLeft)
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QtCore.QObject.connect(self.cmdJoin,QtCore.SIGNAL("clicked()"),self.addJoin)
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QtCore.QObject.connect(self.cmdOuterRight,QtCore.SIGNAL("clicked()"),self.addORight)
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QtCore.QObject.connect(self.cmdOuter,QtCore.SIGNAL("clicked()"),self.addOuter)
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QtCore.QObject.connect(self.cmdProjection,QtCore.SIGNAL("clicked()"),self.addProjection)
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QtCore.QObject.connect(self.cmdSelection,QtCore.SIGNAL("clicked()"),self.addSelection)
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QtCore.QObject.connect(self.cmdRename,QtCore.SIGNAL("clicked()"),self.addRename)
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QtCore.QObject.connect(self.cmdArrow,QtCore.SIGNAL("clicked()"),self.addArrow)
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QtCore.QObject.connect(self.cmdExecute,QtCore.SIGNAL("clicked()"),self.execute)
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QtCore.QObject.connect(self.cmdLoad,QtCore.SIGNAL("clicked()"),self.loadRelation)
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QtCore.QObject.connect(self.cmdUnload,QtCore.SIGNAL("clicked()"),self.unloadRelation)
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QtCore.QObject.connect(self.lstRelations,QtCore.SIGNAL("itemDoubleClicked(QListWidgetItem*)"),self.printRelation)
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QtCore.QObject.connect(self.lstRelations,QtCore.SIGNAL("itemActivated(QListWidgetItem*)"),self.showAttributes)
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QtCore.QMetaObject.connectSlotsByName(Form)
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Form.setTabOrder(self. txtResult,self.txtQuery)
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Form.setTabOrder(self.txtQuery,self.cmdExecute)
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Form.setTabOrder(self.cmdExecute,self.lstRelations)
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Form.setTabOrder(self.lstRelations,self.cmdLoad)
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Form.setTabOrder(self.cmdLoad,self.cmdUnload)
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Form.setTabOrder(self.cmdUnload,self.lstAttributes)
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Form.setTabOrder(self.lstAttributes,self.table)
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Form.setTabOrder(self.table,self.cmdProduct)
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Form.setTabOrder(self.cmdProduct,self.cmdUnion)
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Form.setTabOrder(self.cmdUnion,self.cmdJoin)
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Form.setTabOrder(self.cmdJoin,self.cmdOuterLeft)
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Form.setTabOrder(self.cmdOuterLeft,self.cmdProjection)
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Form.setTabOrder(self.cmdProjection,self.cmdRename)
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Form.setTabOrder(self.cmdRename,self.cmdAbout)
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def retranslateUi(self, Form):
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Form.setWindowTitle(QtGui.QApplication.translate("Form", "Relational", None, QtGui.QApplication.UnicodeUTF8))
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self.groupBox_4.setTitle(QtGui.QApplication.translate("Form", "Menu", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdAbout.setText(QtGui.QApplication.translate("Form", "Docs", None, QtGui.QApplication.UnicodeUTF8))
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self.groupBox.setTitle(QtGui.QApplication.translate("Form", "Operators", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdProduct.setToolTip(QtGui.QApplication.translate("Form", "Product operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdProduct.setText(QtGui.QApplication.translate("Form", "*", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdDifference.setToolTip(QtGui.QApplication.translate("Form", "Difference operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdDifference.setText(QtGui.QApplication.translate("Form", "-", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdUnion.setToolTip(QtGui.QApplication.translate("Form", "Union operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdUnion.setText(QtGui.QApplication.translate("Form", "ᑌ", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdIntersection.setToolTip(QtGui.QApplication.translate("Form", "Intersection operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdIntersection.setText(QtGui.QApplication.translate("Form", "ᑎ", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdJoin.setToolTip(QtGui.QApplication.translate("Form", "Natural join operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdJoin.setText(QtGui.QApplication.translate("Form", "ᐅᐊ", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdOuterLeft.setToolTip(QtGui.QApplication.translate("Form", "Outer join left operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdOuterLeft.setText(QtGui.QApplication.translate("Form", "ᐅLEFTᐊ", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdOuterRight.setToolTip(QtGui.QApplication.translate("Form", "Outer join right operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdOuterRight.setText(QtGui.QApplication.translate("Form", "ᐅRIGHTᐊ", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdOuter.setToolTip(QtGui.QApplication.translate("Form", "Outer join full operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdOuter.setText(QtGui.QApplication.translate("Form", "ᐅFULLᐊ", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdProjection.setToolTip(QtGui.QApplication.translate("Form", "Projection operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdProjection.setText(QtGui.QApplication.translate("Form", "π", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdSelection.setToolTip(QtGui.QApplication.translate("Form", "Selection operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdSelection.setText(QtGui.QApplication.translate("Form", "σ", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdRename.setToolTip(QtGui.QApplication.translate("Form", "Rename operator", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdRename.setText(QtGui.QApplication.translate("Form", "ρ", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdArrow.setToolTip(QtGui.QApplication.translate("Form", "Rename attribute", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdArrow.setText(QtGui.QApplication.translate("Form", "➡", None, QtGui.QApplication.UnicodeUTF8))
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self.groupBox_2.setTitle(QtGui.QApplication.translate("Form", "Relations", None, QtGui.QApplication.UnicodeUTF8))
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self.lstRelations.setToolTip(QtGui.QApplication.translate("Form", "List all the relations.\n"
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"Double click on a relation to show it in the table.", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdLoad.setWhatsThis(QtGui.QApplication.translate("Form", "Loads a relation from a file", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdLoad.setText(QtGui.QApplication.translate("Form", "Load relation", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdUnload.setToolTip(QtGui.QApplication.translate("Form", "Unloads a relation", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdUnload.setText(QtGui.QApplication.translate("Form", "Unload relation", None, QtGui.QApplication.UnicodeUTF8))
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self.groupBox_3.setTitle(QtGui.QApplication.translate("Form", "Attributes", None, QtGui.QApplication.UnicodeUTF8))
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self.lstAttributes.setToolTip(QtGui.QApplication.translate("Form", "Shows the attributes of the current relation", None, QtGui.QApplication.UnicodeUTF8))
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self.label.setText(QtGui.QApplication.translate("Form", "Query", None, QtGui.QApplication.UnicodeUTF8))
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self.label_2.setText(QtGui.QApplication.translate("Form", "=", None, QtGui.QApplication.UnicodeUTF8))
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self.cmdExecute.setText(QtGui.QApplication.translate("Form", "Execute", None, QtGui.QApplication.UnicodeUTF8))
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if __name__ == "__main__":
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import sys
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app = QtGui.QApplication(sys.argv)
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Form = QtGui.QWidget()
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ui = Ui_Form()
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ui.setupUi(Form)
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Form.show()
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Form.setWindowTitle("Relational")
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sys.exit(app.exec_())
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