Viewing file:  UriReferenceFileImp.py (3.42 KB) -rw-r--r--
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########################################################################
# $Header: /var/local/cvsroot/4Suite/Ft/Server/Server/SCore/UriReferenceFileImp.py,v 1.12 2004/10/16 00:12:01 uogbuji Exp $
"""
UriReferenceFile repository resource class
Copyright 2004 Fourthought, Inc. (USA).
Detailed license and copyright information: http://4suite.org/COPYRIGHT
Project home, documentation, distributions: http://4suite.org/
"""
import time, urllib
import RawFileImp
from Ft.Server import FTSERVER_NAMESPACE
from Ft.Server.Common import Schema,XmlLib
from Ft.Server.Common.ResourceTypes import ResourceType
from Ft.Server.Server import FtServerServerException, Error
from Ft.Server.Server.Drivers import FtssDriver
from Ft.Xml.XLink import XLINK_NAMESPACE
from Ft.Lib import Uri
from Ft.Server.Server.Drivers import FtssInputSource
class UriReferenceFileImp(RawFileImp.RawFileImp):
"""
An Uri Reference File is a reference to a URI. You are given read only access to it.
MetaData about the Content is updated every time you call getContent
"""
resourceType = ResourceType.URI_REFERENCE_FILE
def getReference(self):
self._verifyTx()
res = self._driver.getSystemModel().complete(self._path.absolutePath,Schema.URI_REFERENCE_LOCATION,None)
if not res:
return ""
return res[0].object
def setContent(self,*args):
raise FtServerServerException(Error.PERMISSION_DENIED,
level='write',
path = self._path)
def getContent(self):
ref = self.getReference()
if not ref:
content = ""
else:
fd = FtssInputSource.FTSS_RESOLVER.resolve(ref)
content = fd.read()
fd.close()
from Ft.Server.Server.Drivers import FtssDriver
xu = FtssDriver.UPDATE_SIZE % (FTSERVER_NAMESPACE, (len(content)))
self._driver.xupdateMetaData(self._path, xu)
return content
def setReference(self,newRef):
"""
Set what this URI references
"""
self._verifyTx()
xu = XmlLib.MakeString(SET_REFERENCE_XUPDATE%(FTSERVER_NAMESPACE,XLINK_NAMESPACE,newRef))
self._driver.xupdateMetaData(self._path,xu)
self.getContent() #To update
def NewUriReferenceFileXml(driver,path,acl,owner,imt,srcUri):
if srcUri:
fd = Uri.UrlOpen(srcUri)
size = len(fd.read())
fd.close()
else:
size = 0
keywords = {
'ns' : FTSERVER_NAMESPACE,
'path' : path,
'type' : Schema.g_rdfResourceTypes[ResourceType.URI_REFERENCE_FILE],
'dt' : FtssDriver.CurrentTime(),
'acl' : driver.aclToXml(acl),
'owner' : owner,
'media-type' : imt,
'size' : size,
'reference' : srcUri,
}
xml = """\
<ftss:MetaData xmlns:ftss='%(ns)s' path='%(path)s' type='%(type)s' creation-date='%(dt)s'>
%(acl)s
<ftss:LastModifiedDate>%(dt)s</ftss:LastModifiedDate>
<ftss:Owner>%(owner)s</ftss:Owner>
<ftss:Imt>%(media-type)s</ftss:Imt>
<ftss:Size>%(size)d</ftss:Size>
<ftss:Reference>%(reference)s</ftss:Reference>
</ftss:MetaData>""" % keywords
return XmlLib.MakeString(xml)
SET_REFERENCE_XUPDATE="""<xupdate:modifications
version="1.0"
xmlns:xupdate="http://www.xmldb.org/xupdate"
xmlns:ftss="%s"
xmlns:xlink="%s"
>
<xupdate:update select="/ftss:MetaData/ftss:Reference">%s</xupdate:update>
</xupdate:modifications>
"""
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