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1 // Copyright 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "sync/internal_api/public/read_node.h" | |
6 | |
7 #include <stdint.h> | |
8 | |
9 #include "base/logging.h" | |
10 #include "sync/internal_api/public/base_transaction.h" | |
11 #include "sync/syncable/entry.h" | |
12 #include "sync/syncable/syncable_base_transaction.h" | |
13 #include "sync/syncable/syncable_util.h" | |
14 | |
15 namespace syncer { | |
16 | |
17 ////////////////////////////////////////////////////////////////////////// | |
18 // ReadNode member definitions | |
19 ReadNode::ReadNode(const BaseTransaction* transaction) | |
20 : entry_(NULL), transaction_(transaction) { | |
21 DCHECK(transaction); | |
22 } | |
23 | |
24 ReadNode::ReadNode() { | |
25 entry_ = NULL; | |
26 transaction_ = NULL; | |
27 } | |
28 | |
29 ReadNode::~ReadNode() { | |
30 delete entry_; | |
31 } | |
32 | |
33 void ReadNode::InitByRootLookup() { | |
34 DCHECK(!entry_) << "Init called twice"; | |
35 syncable::BaseTransaction* trans = transaction_->GetWrappedTrans(); | |
36 entry_ = new syncable::Entry(trans, syncable::GET_BY_ID, trans->root_id()); | |
37 if (!entry_->good()) | |
38 DCHECK(false) << "Could not lookup root node for reading."; | |
39 } | |
40 | |
41 BaseNode::InitByLookupResult ReadNode::InitByIdLookup(int64_t id) { | |
42 DCHECK(!entry_) << "Init called twice"; | |
43 DCHECK_NE(id, kInvalidId); | |
44 syncable::BaseTransaction* trans = transaction_->GetWrappedTrans(); | |
45 entry_ = new syncable::Entry(trans, syncable::GET_BY_HANDLE, id); | |
46 if (!entry_->good()) | |
47 return INIT_FAILED_ENTRY_NOT_GOOD; | |
48 if (entry_->GetIsDel()) | |
49 return INIT_FAILED_ENTRY_IS_DEL; | |
50 ModelType model_type = GetModelType(); | |
51 LOG_IF(WARNING, model_type == UNSPECIFIED || model_type == TOP_LEVEL_FOLDER) | |
52 << "SyncAPI InitByIdLookup referencing unusual object."; | |
53 return DecryptIfNecessary() ? INIT_OK : INIT_FAILED_DECRYPT_IF_NECESSARY; | |
54 } | |
55 | |
56 BaseNode::InitByLookupResult ReadNode::InitByClientTagLookup( | |
57 ModelType model_type, | |
58 const std::string& tag) { | |
59 DCHECK(!entry_) << "Init called twice"; | |
60 if (tag.empty()) | |
61 return INIT_FAILED_PRECONDITION; | |
62 | |
63 const std::string hash = syncable::GenerateSyncableHash(model_type, tag); | |
64 | |
65 entry_ = new syncable::Entry(transaction_->GetWrappedTrans(), | |
66 syncable::GET_BY_CLIENT_TAG, hash); | |
67 if (!entry_->good()) | |
68 return INIT_FAILED_ENTRY_NOT_GOOD; | |
69 if (entry_->GetIsDel()) | |
70 return INIT_FAILED_ENTRY_IS_DEL; | |
71 return DecryptIfNecessary() ? INIT_OK : INIT_FAILED_DECRYPT_IF_NECESSARY; | |
72 } | |
73 | |
74 const syncable::Entry* ReadNode::GetEntry() const { | |
75 return entry_; | |
76 } | |
77 | |
78 const BaseTransaction* ReadNode::GetTransaction() const { | |
79 return transaction_; | |
80 } | |
81 | |
82 int64_t ReadNode::GetTransactionVersion() const { | |
83 return GetEntry()->GetTransactionVersion(); | |
84 } | |
85 | |
86 BaseNode::InitByLookupResult ReadNode::InitByTagLookupForBookmarks( | |
87 const std::string& tag) { | |
88 DCHECK(!entry_) << "Init called twice"; | |
89 if (tag.empty()) | |
90 return INIT_FAILED_PRECONDITION; | |
91 syncable::BaseTransaction* trans = transaction_->GetWrappedTrans(); | |
92 entry_ = new syncable::Entry(trans, syncable::GET_BY_SERVER_TAG, tag); | |
93 if (!entry_->good()) | |
94 return INIT_FAILED_ENTRY_NOT_GOOD; | |
95 if (entry_->GetIsDel()) | |
96 return INIT_FAILED_ENTRY_IS_DEL; | |
97 ModelType model_type = GetModelType(); | |
98 DCHECK_EQ(model_type, BOOKMARKS) | |
99 << "InitByTagLookup deprecated for all types except bookmarks."; | |
100 return DecryptIfNecessary() ? INIT_OK : INIT_FAILED_DECRYPT_IF_NECESSARY; | |
101 } | |
102 | |
103 BaseNode::InitByLookupResult ReadNode::InitTypeRoot(ModelType type) { | |
104 DCHECK(!entry_) << "Init called twice"; | |
105 if (!IsRealDataType(type)) | |
106 return INIT_FAILED_PRECONDITION; | |
107 syncable::BaseTransaction* trans = transaction_->GetWrappedTrans(); | |
108 entry_ = new syncable::Entry(trans, syncable::GET_TYPE_ROOT, type); | |
109 if (!entry_->good()) | |
110 return INIT_FAILED_ENTRY_NOT_GOOD; | |
111 if (entry_->GetIsDel()) | |
112 return INIT_FAILED_ENTRY_IS_DEL; | |
113 ModelType found_model_type = GetModelType(); | |
114 LOG_IF(WARNING, found_model_type == UNSPECIFIED || | |
115 found_model_type == TOP_LEVEL_FOLDER) | |
116 << "SyncAPI InitTypeRoot referencing unusually typed object."; | |
117 return DecryptIfNecessary() ? INIT_OK : INIT_FAILED_DECRYPT_IF_NECESSARY; | |
118 } | |
119 | |
120 } // namespace syncer | |
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