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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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