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Kirill Smelkov
wendelin.core
Commits
ca508686
Commit
ca508686
authored
Apr 14, 2019
by
Kirill Smelkov
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wcfs/internal/xbtree/δbtail.go
wcfs/internal/xbtree/δbtail.go
+11
-17
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wcfs/internal/xbtree/δbtail.go
View file @
ca508686
...
@@ -66,11 +66,11 @@ type Value = zodb.Oid // XXX assumes key points to IPersistent
...
@@ -66,11 +66,11 @@ type Value = zodb.Oid // XXX assumes key points to IPersistent
// XXX incremental; not full coverage
// XXX incremental; not full coverage
// XXX see also zodb.ΔTail .
// XXX see also zodb.ΔTail .
//
//
// ΔTail is not safe for concurrent access.
// ΔTail is not safe for concurrent access.
XXX -> is safe to use from multiple goroutines simultaneously.
type
ΔTail
struct
{
type
ΔTail
struct
{
δZtail
*
zodb
.
ΔTail
// raw ZODB changes; Kept to rebuild δBtail/byRoot after new Track
δZtail
*
zodb
.
ΔTail
// raw ZODB changes; Kept to rebuild δBtail/byRoot after new Track
δ
Btail
[]
ΔRevEntry
// which BTree were changed; Noted only by keys ∈ tracket subset
δ
root
[]
ΔRoots
// which BTree were changed; Noted only by keys ∈ tracket subset
byRoot
map
[
*
Tree
]
*
ΔTreeTail
// root -> k/v change history; only for keys ∈ tracket subset
byRoot
map
[
*
Tree
]
*
ΔTreeTail
// root -> k/v change history; only for keys ∈ tracket subset
// XXX or ask client provide db on every call?
// XXX or ask client provide db on every call?
...
@@ -86,34 +86,28 @@ type ΔTail struct {
...
@@ -86,34 +86,28 @@ type ΔTail struct {
lastRevOf
map
[
zodb
.
Oid
]
map
[
Key
]
zodb
.
Tid
// {} root -> {} key -> last
lastRevOf
map
[
zodb
.
Oid
]
map
[
Key
]
zodb
.
Tid
// {} root -> {} key -> last
}
}
// ΔRoots describes which BTrees were change in one revision.
type
ΔRoots
struct
{
Rev
zodb
.
Tid
Changev
[]
Tree
// root XXX -> Oid? XXX -> SetTree?
}
// ΔTreeTail represent tail of revisional changes to one BTree.
// ΔTreeTail represent tail of revisional changes to one BTree.
//
//
// See ΔTail documentation for details.
// See ΔTail documentation for details.
type
ΔTreeTail
struct
{
type
ΔTreeTail
struct
{
δTtail
[]
ΔTree
Entry
// changes to tree keys; covers keys ∈ tracket subset
δTtail
[]
ΔTree
// changes to tree keys; covers keys ∈ tracket subset
// {}k/v @tail for keys that are changed in (tail, head].
// {}k/v @tail for keys that are changed in (tail, head].
atTail
map
[
*
Tree
]
map
[
Key
]
Value
atTail
map
[
*
Tree
]
map
[
Key
]
Value
}
}
// ΔRevEntry describes which BTrees were change in one revision.
// ΔTree describes changes to one BTree in one revision.
type
ΔRevEntry
struct
{
type
ΔTree
struct
{
Rev
zodb
.
Tid
Changev
[]
Tree
// root XXX -> Oid?
}
// ΔTreeEntry describes BTree changes due to one revision.
type
ΔTreeEntry
struct
{
Rev
zodb
.
Tid
Rev
zodb
.
Tid
Change
map
[
Key
]
Value
Change
map
[
Key
]
Value
}
}
// ΔTree represents changes to one tree.
type
ΔTree
struct
{
Root
*
Tree
// XXX -> Oid?
Keyv
[]
Key
}
// NewΔTail creats new empty ΔTail object.
// NewΔTail creats new empty ΔTail object.
//
//
// Initial tracked set is empty.
// Initial tracked set is empty.
...
...
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