# HG changeset patch
# User emellor@ewan
# Node ID a65cdee92c0f5ce1c8240710b258013f9827002e
# Parent 1e288a9316fdff2967889ae9ac5d016fa4e996d2
Added behaviour to read() to read directly from the transaction's path if no
arguments are specified.
Signed-off-by: Ewan Mellor <ewan@xxxxxxxxxxxxx>
diff -r 1e288a9316fd -r a65cdee92c0f
tools/python/xen/xend/xenstore/xstransact.py
--- a/tools/python/xen/xend/xenstore/xstransact.py Wed Sep 28 12:41:44 2005
+++ b/tools/python/xen/xend/xenstore/xstransact.py Wed Sep 28 12:43:07 2005
@@ -42,8 +42,15 @@
'%s, while reading %s' % (ex.args[1], path))
def read(self, *args):
- if len(args) == 0:
- raise TypeError
+ """If no arguments are given, return the value at this transaction's
+ path. If one argument is given, treat that argument as a subpath to
+ this transaction's path, and return the value at that path.
+ Otherwise, treat each argument as a subpath to this transaction's
+ path, and return a list composed of the values at each of those
+ instead.
+ """
+ if len(args) == 0:
+ return xshandle().read(self.path)
if len(args) == 1:
return self._read(args[0])
ret = []
@@ -191,6 +198,13 @@
def Read(cls, path, *args):
+ """If only one argument is given (path), return the value stored at
+ that path. If two arguments are given, treat the second argument as a
+ subpath within the first, and return the value at the composed path.
+ Otherwise, treat each argument after the first as a subpath to the
+ given path, and return a list composed of the values at each of those
+ instead. This operation is performed inside a transaction.
+ """
while True:
t = cls(path)
try:
@@ -234,6 +248,12 @@
Remove = classmethod(Remove)
def List(cls, path, *args):
+ """If no arguments are given (path), list its contents, returning the
+ entries therein, or None if no entries are found. Otherwise, treat
+ each further argument as a subpath to the given path, and return the
+ cumulative listing of each of those instead. This operation is
+ performed inside a transaction.
+ """
while True:
t = cls(path)
try:
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