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info_model.py
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info_model.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
Name : DB Manager
Description : Database manager plugin for QGIS (Oracle)
Date : Aug 27, 2014
copyright : (C) 2014 by Médéric RIBREUX
email : mederic.ribreux@gmail.com
The content of this file is based on
- PG_Manager by Martin Dobias <wonder.sk@gmail.com> (GPLv2 license)
- DB Manager by Giuseppe Sucameli <brush.tyler@gmail.com> (GPLv2 license)
***************************************************************************/
/***************************************************************************
* *
* 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 PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import QGis
from ..info_model import TableInfo, VectorTableInfo, DatabaseInfo, \
SchemaInfo
from ..html_elems import HtmlContent, HtmlSection, HtmlParagraph, \
HtmlList, HtmlTable, HtmlTableHeader, HtmlTableCol
# Syntax Highlight for VIEWS/MVIEWS
from pygments import highlight
from pygments.lexers import get_lexer_by_name
from pygments.formatters import HtmlFormatter
class ORDatabaseInfo(DatabaseInfo):
def __init__(self, db):
self.db = db
def connectionDetails(self):
tbl = []
if self.db.connector.host != u"":
tbl.append((QApplication.translate("DBManagerPlugin", "Host:"),
self.db.connector.host))
tbl.append((QApplication.translate("DBManagerPlugin", "Database:"),
self.db.connector.dbname))
tbl.append((QApplication.translate("DBManagerPlugin", "User:"),
self.db.connector.user))
tbl.append((QApplication.translate("DBManagerPlugin",
"SQLite list tables cache:"),
"Enabled" if self.db.connector.hasCache else
"Unavailable"))
return HtmlTable(tbl)
def spatialInfo(self):
ret = []
info = self.db.connector.getSpatialInfo()
if not info:
return
tbl = [
(QApplication.translate("DBManagerPlugin", "Oracle\
Spatial:"),
info[0])
]
ret.append(HtmlTable(tbl))
if not self.db.connector.has_geometry_columns:
ret.append(
HtmlParagraph(
QApplication.translate(
"DBManagerPlugin",
(u"<warning> ALL_SDO_GEOM_METADATA"
u" view doesn't exist!\n"
u"This view is essential for many"
u"GIS applications for enumeration of tables."))))
return ret
def privilegesDetails(self):
""" find if user can create schemas (CREATE ANY TABLE or something)"""
# TODO
return None
class ORTableInfo(TableInfo):
def __init__(self, table):
self.table = table
if not self.table.objectType:
self.table.getType()
if not self.table.comment:
self.table.getComment()
if not self.table.estimatedRowCount and not self.table.isView:
self.table.refreshRowEstimation()
if not self.table.creationDate:
self.table.getDates()
def generalInfo(self):
ret = []
# if the estimation is less than 100 rows, try to count them - it
# shouldn't take long time
if (not self.table.isView
and not self.table.rowCount
and self.table.estimatedRowCount < 100):
# row count information is not displayed yet, so just block
# table signals to avoid double refreshing
# (infoViewer->refreshRowCount->tableChanged->infoViewer)
self.table.blockSignals(True)
self.table.refreshRowCount()
self.table.blockSignals(False)
relation_type = QApplication.translate(
"DBManagerPlugin", self.table.objectType)
tbl = [
(QApplication.translate("DBManagerPlugin", "Object type:"),
relation_type),
(QApplication.translate("DBManagerPlugin", "Owner:"),
self.table.owner)
]
if self.table.comment:
tbl.append(
(QApplication.translate(
"DBManagerPlugin",
"Comment:"),
self.table.comment))
# Estimated rows
if not self.table.isView:
tbl.append(
(QApplication.translate(
"DBManagerPlugin", "Rows (estimation):"),
self.table.estimatedRowCount)
)
if self.table.rowCount or self.table.rowCount >= 0:
# Add a real count of rows
tbl.append(
(QApplication.translate("DBManagerPlugin", "Rows (counted):"),
self.table.rowCount)
)
else:
tbl.append(
(QApplication.translate("DBManagerPlugin", "Rows (counted):"),
'Unknown (<a href="action:rows/recount">find out</a>)')
)
# Add creation and modification dates
if self.table.creationDate:
tbl.append(
(QApplication.translate("DBManagerPlugin", "Creation Date:"),
self.table.creationDate))
if self.table.modificationDate:
tbl.append(
(QApplication.translate(
"DBManagerPlugin", "Last Modification Date:"),
self.table.modificationDate))
# privileges
# has the user access to this schema?
schema_priv = self.table.database().connector.getSchemaPrivileges(
self.table.schemaName()) if self.table.schema() else None
if not schema_priv:
pass
elif schema_priv[1] is False: # no usage privileges on the schema
tbl.append((QApplication.translate(
"DBManagerPlugin", "Privileges:"),
QApplication.translate(
"DBManagerPlugin",
(u"<warning> This user doesn't have usage privileges"
u"for this schema!"))))
else:
table_priv = self.table.database().connector.getTablePrivileges(
(self.table.schemaName(), self.table.name))
privileges = []
if table_priv[0]:
privileges.append("select")
if table_priv[1]:
privileges.append("insert")
if table_priv[2]:
privileges.append("update")
if table_priv[3]:
privileges.append("delete")
if len(privileges) > 0:
priv_string = u", ".join(privileges)
else:
priv_string = QApplication.translate(
"DBManagerPlugin",
'<warning> This user has no privileges!')
tbl.append(
(QApplication.translate(
"DBManagerPlugin", "Privileges:"),
priv_string))
ret.append(HtmlTable(tbl))
if schema_priv and schema_priv[1]:
if (table_priv[0]
and not table_priv[1]
and not table_priv[2]
and not table_priv[3]):
ret.append(
HtmlParagraph(QApplication.translate(
"DBManagerPlugin",
"<warning> This user has read-only privileges.")))
# primary key defined?
if (not self.table.isView
and self.table.objectType != u"MATERIALIZED VIEW"):
pk = filter(lambda fld: fld.primaryKey, self.table.fields())
if len(pk) <= 0:
ret.append(
HtmlParagraph(QApplication.translate(
"DBManagerPlugin",
"<warning> No primary key defined for this table!")))
return ret
def getSpatialInfo(self):
ret = []
info = self.db.connector.getSpatialInfo()
if not info:
return
tbl = [
(QApplication.translate(
"DBManagerPlugin", "Library:"), info[0]) # ,
]
ret.append(HtmlTable(tbl))
if not self.db.connector.has_geometry_columns:
ret.append(HtmlParagraph(
QApplication.translate(
"DBManagerPlugin",
(u"<warning> ALL_SDO_GEOM_METADATA table doesn't exist!\n"
u"This table is essential for many GIS"
u"applications for enumeration of tables."))))
return ret
def fieldsDetails(self):
tbl = []
# define the table header
header = (
"#",
QApplication.translate("DBManagerPlugin", "Name"),
QApplication.translate("DBManagerPlugin", "Type"),
QApplication.translate("DBManagerPlugin", "Length"),
QApplication.translate("DBManagerPlugin", "Null"),
QApplication.translate("DBManagerPlugin", "Default"),
QApplication.translate("DBManagerPlugin", "Comment"))
tbl.append(HtmlTableHeader(header))
# add table contents
for fld in self.table.fields():
char_max_len = fld.charMaxLen if fld.charMaxLen else ""
if fld.modifier:
char_max_len = u"{},{}".format(char_max_len, fld.modifier)
is_null_txt = "N" if fld.notNull else "Y"
# make primary key field underlined
attrs = {"class": "underline"} if fld.primaryKey else None
name = HtmlTableCol(fld.name, attrs)
tbl.append(
(fld.num, name, fld.type2String(), char_max_len,
is_null_txt, fld.default2String(), fld.comment))
return HtmlTable(tbl, {"class": "header"})
def constraintsDetails(self):
if not self.table.constraints():
return None
tbl = []
# define the table header
header = (QApplication.translate("DBManagerPlugin", "Name"),
QApplication.translate("DBManagerPlugin", "Type"),
QApplication.translate("DBManagerPlugin", "Column"),
QApplication.translate("DBManagerPlugin", "Status"),
QApplication.translate("DBManagerPlugin", "Validated"),
QApplication.translate("DBManagerPlugin", "Generated"),
QApplication.translate("DBManagerPlugin", "Check condition"),
QApplication.translate("DBManagerPlugin", "Foreign Table"),
QApplication.translate("DBManagerPlugin", "Foreign column"),
QApplication.translate("DBManagerPlugin", "On Delete"))
tbl.append(HtmlTableHeader(header))
# add table contents
for con in self.table.constraints():
tbl.append((con.name, con.type2String(), con.column,
con.status, con.validated, con.generated,
con.checkSource, con.foreignTable,
con.foreignKey, con.foreignOnDelete))
return HtmlTable(tbl, {"class": "header"})
def indexesDetails(self):
if not self.table.indexes():
return None
tbl = []
# define the table header
header = (QApplication.translate("DBManagerPlugin", "Name"),
QApplication.translate("DBManagerPlugin", "Column(s)"),
QApplication.translate("DBManagerPlugin", "Index Type"),
QApplication.translate("DBManagerPlugin", "Status"),
QApplication.translate("DBManagerPlugin", "Last analyzed"),
QApplication.translate("DBManagerPlugin", "Compression"),
QApplication.translate("DBManagerPlugin", "Uniqueness"),
QApplication.translate("DBManagerPlugin", "Action"))
tbl.append(HtmlTableHeader(header))
# add table contents
for idx in self.table.indexes():
# get the fields the index is defined on
tbl.append((idx.name, idx.column, idx.indexType,
idx.status, idx.analyzed, idx.compression,
idx.isUnique,
(u'<a href="action:index/{}/rebuild">Rebuild'
u"""</a>""".format(idx.name))))
return HtmlTable(tbl, {"class": "header"})
def triggersDetails(self):
if not self.table.triggers():
return None
ret = []
tbl = []
# define the table header
header = (
QApplication.translate("DBManagerPlugin", "Name"),
QApplication.translate("DBManagerPlugin", "Event"),
QApplication.translate("DBManagerPlugin", "Type"),
QApplication.translate("DBManagerPlugin", "Enabled"))
tbl.append(HtmlTableHeader(header))
# add table contents
for trig in self.table.triggers():
name = (u"""{0} (<a href="action:trigger/"""
u"""{0}/{1}">{1}</a>)""".format(trig.name, "delete"))
if trig.enabled == u"ENABLED":
enabled, action = (
QApplication.translate("DBManagerPlugin", "Yes"),
u"disable")
else:
enabled, action = (
QApplication.translate("DBManagerPlugin", "No"),
"enable")
txt_enabled = (u"""{0} (<a href="action:trigger/"""
u"""{1}/{2}">{2}</a>)""".format(
enabled, trig.name, action))
tbl.append((name, trig.event, trig.type, txt_enabled))
ret.append(HtmlTable(tbl, {"class": "header"}))
ret.append(
HtmlParagraph(
QApplication.translate(
"DBManagerPlugin",
(u'<a href="action:triggers/enable">'
u'Enable all triggers</a> / '
u'<a href="action:triggers/disable">'
u'Disable all triggers</a>'))))
return ret
def getTableInfo(self):
ret = []
general_info = self.generalInfo()
if not general_info:
pass
else:
ret.append(
HtmlSection(
QApplication.translate(
"DBManagerPlugin", 'General info'),
general_info))
# spatial info
spatial_info = self.spatialInfo()
if not spatial_info:
pass
else:
spatial_info = HtmlContent(spatial_info)
if not spatial_info.hasContents():
spatial_info = QApplication.translate(
"DBManagerPlugin",
'<warning> This is not a spatial table.')
ret.append(
HtmlSection(
self.table.database().connection().typeNameString(),
spatial_info))
# fields
fields_details = self.fieldsDetails()
if not fields_details:
pass
else:
ret.append(
HtmlSection(
QApplication.translate(
"DBManagerPlugin",
'Fields'),
fields_details))
# constraints
constraints_details = self.constraintsDetails()
if not constraints_details:
pass
else:
ret.append(
HtmlSection(
QApplication.translate(
"DBManagerPlugin",
'Constraints'),
constraints_details))
# indexes
indexes_details = self.indexesDetails()
if not indexes_details:
pass
else:
ret.append(
HtmlSection(
QApplication.translate(
"DBManagerPlugin",
'Indexes'),
indexes_details))
# triggers
triggers_details = self.triggersDetails()
if not triggers_details:
pass
else:
ret.append(
HtmlSection(
QApplication.translate(
"DBManagerPlugin",
'Triggers'),
triggers_details))
if self.table.objectType == u"MATERIALIZED VIEW":
mview_info = self.getMViewInfo()
ret.append(
HtmlSection(
QApplication.translate(
"DBManagerPlugin",
'Materialized View information'),
mview_info))
return ret
def getMViewInfo(self):
"""If the table is a materialized view, grab more
information...
"""
ret = []
tbl = []
values = self.table.getMViewInfo()
tbl.append((QApplication.translate("DBManagerPlugin",
"Refresh Mode:"),
values[0]))
tbl.append((QApplication.translate("DBManagerPlugin",
"Refresh Method:"),
values[1]))
tbl.append((QApplication.translate("DBManagerPlugin",
"Build Mode:"),
values[2]))
tbl.append((QApplication.translate("DBManagerPlugin",
"Last Refresh Date:"),
values[5]))
tbl.append((QApplication.translate("DBManagerPlugin",
"Last Refresh Type:"),
values[4]))
tbl.append((QApplication.translate("DBManagerPlugin",
"Fast Refreshable:"),
values[3]))
tbl.append((QApplication.translate("DBManagerPlugin",
"Staleness:"),
values[6]))
tbl.append((QApplication.translate("DBManagerPlugin",
"Stale since:"),
values[7]))
tbl.append((QApplication.translate("DBManagerPlugin",
"Compile State:"),
values[8]))
tbl.append((QApplication.translate("DBManagerPlugin",
"Use no index:"),
values[9]))
tbl.append((QApplication.translate(
"DBManagerPlugin",
(u'<a href="action:mview/refresh">Refresh the materializ'
u'ed view</a>')),
u""))
ret.append(HtmlTable(tbl))
return ret
def getViewInfo(self):
"""If the table is a view or a materialized view, add the
definition of the view.
"""
if self.table.objectType not in [u"VIEW", u"MATERIALIZED VIEW"]:
return []
ret = self.getTableInfo()
# view definition
view_def = self.table.getDefinition()
# Syntax highlight
lexer = get_lexer_by_name("sql")
formatter = HtmlFormatter(
linenos=True, cssclass="source", noclasses=True)
result = highlight(view_def, lexer, formatter)
if view_def:
if self.table.objectType == u"VIEW":
title = u"View Definition"
else:
title = u"Materialized View Definition"
ret.append(
HtmlSection(
QApplication.translate("DBManagerPlugin", title),
result))
return ret
def toHtml(self):
if self.table.objectType in [u"VIEW", u"MATERIALIZED VIEW"]:
ret = self.getViewInfo()
else:
ret = self.getTableInfo()
return HtmlContent(ret).toHtml()
class ORVectorTableInfo(ORTableInfo, VectorTableInfo):
def __init__(self, table):
VectorTableInfo.__init__(self, table)
ORTableInfo.__init__(self, table)
def spatialInfo(self):
ret = []
if not self.table.geomType:
return ret
tbl = [
(QApplication.translate("DBManagerPlugin", "Column:"),
self.table.geomColumn),
(QApplication.translate("DBManagerPlugin", "Geometry:"),
self.table.geomType),
(QApplication.translate("DBManagerPlugin",
"QGis Geometry type:"),
QGis.featureType(self.table.wkbType))
]
# only if we have info from geometry_columns
if self.table.geomDim:
tbl.append(
(QApplication.translate(
"DBManagerPlugin",
"Dimension:"),
self.table.geomDim))
srid = self.table.srid if self.table.srid else -1
if srid != -1:
sr_info = (
self.table.database().connector.getSpatialRefInfo(srid))
else:
sr_info = QApplication.translate("DBManagerPlugin",
"Undefined")
if sr_info:
tbl.append(
(QApplication.translate(
"DBManagerPlugin", "Spatial ref:"),
u"{0} ({1})".format(sr_info, srid)))
# estimated extent
if not self.table.estimatedExtent:
# estimated extent information is not displayed yet, so just block
# table signals to avoid double refreshing
# (infoViewer->refreshEstimatedExtent->tableChanged->infoViewer)
self.table.blockSignals(True)
self.table.refreshTableEstimatedExtent()
self.table.blockSignals(False)
if self.table.estimatedExtent:
estimated_extent_str = (u"{:.9f}, {:.9f} - {:.9f}, "
u"{:.9f}".format(
*self.table.estimatedExtent))
tbl.append(
(QApplication.translate(
"DBManagerPlugin", "Estimated extent:"),
estimated_extent_str))
# extent
extent_str = None
if self.table.extent and len(self.table.extent) == 4:
extent_str = (u"{:.9f}, {:.9f} - {:.9f}, "
u"{:.9f}".format(*self.table.extent))
elif self.table.rowCount > 0 or self.table.estimatedRowCount > 0:
# Can't calculate an extent on empty layer
extent_str = QApplication.translate(
"DBManagerPlugin",
'(unknown) (<a href="action:extent/get">find out</a>)')
if extent_str:
tbl.append(
(QApplication.translate(
"DBManagerPlugin", "Extent:"),
extent_str))
ret.append(HtmlTable(tbl))
# Handle extent update metadata
if (self.table.extent
and self.table.extent != self.table.estimatedExtent
and self.table.canUpdateMetadata()):
ret.append(
HtmlParagraph(
QApplication.translate(
"DBManagerPlugin",
(u'<warning> Metadata extent is different from'
u'real extent. You should <a href="action:extent'
u'/update">update it</a> !'))))
# is there an entry in geometry_columns?
if self.table.geomType.lower() == 'geometry':
ret.append(
HtmlParagraph(
QApplication.translate(
"DBManagerPlugin",
"<warning> There is no entry in geometry_columns!")))
# find out whether the geometry column has spatial index on it
if not self.table.isView:
if not self.table.hasSpatialIndex():
ret.append(
HtmlParagraph(
QApplication.translate(
"DBManagerPlugin",
(u'<warning> No spatial index defined (<a href='
u'"action:spatialindex/create">'
u'create it</a>).'))))
return ret