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31 #ifndef DatabaseSync_h
32 #define DatabaseSync_h
34 #include "bindings/core/v8/ScriptWrappable.h"
35 #include "modules/webdatabase/DatabaseBackendSync.h"
36 #include "modules/webdatabase/DatabaseBase.h"
37 #include "modules/webdatabase/DatabaseBasicTypes.h"
38 #include "platform/heap/Handle.h"
39 #include "wtf/Forward.h"
40 #include "wtf/text/WTFString.h"
44 class DatabaseCallback;
46 class SQLTransactionSync;
47 class SQLTransactionSyncCallback;
49 // Instances of this class should be created and used only on the worker's context thread.
50 class DatabaseSync FINAL : public DatabaseBackendSync, public DatabaseBase, public ScriptWrappable {
52 virtual ~DatabaseSync();
53 virtual void trace(Visitor*) OVERRIDE;
55 void changeVersion(const String& oldVersion, const String& newVersion, PassOwnPtr<SQLTransactionSyncCallback>, ExceptionState&);
56 void transaction(PassOwnPtr<SQLTransactionSyncCallback>, ExceptionState&);
57 void readTransaction(PassOwnPtr<SQLTransactionSyncCallback>, ExceptionState&);
59 virtual void closeImmediately() OVERRIDE;
60 void observeTransaction(SQLTransactionSync&);
62 const String& lastErrorMessage() const { return m_lastErrorMessage; }
63 void setLastErrorMessage(const String& message) { m_lastErrorMessage = message; }
64 void setLastErrorMessage(const char* message, int sqliteCode, const char* sqliteMessage)
66 setLastErrorMessage(String::format("%s (%d, %s)", message, sqliteCode, sqliteMessage));
70 DatabaseSync(DatabaseContext*, const String& name,
71 const String& expectedVersion, const String& displayName, unsigned long estimatedSize);
72 static PassRefPtrWillBeRawPtr<DatabaseSync> create(ExecutionContext*, PassRefPtrWillBeRawPtr<DatabaseBackendBase>);
74 void runTransaction(PassOwnPtr<SQLTransactionSyncCallback>, bool readOnly, ExceptionState&);
75 void rollbackTransaction(SQLTransactionSync&);
77 class TransactionObserver {
79 explicit TransactionObserver(SQLTransactionSync& transaction) : m_transaction(transaction) { }
80 ~TransactionObserver();
83 SQLTransactionSync& m_transaction;
86 // Need a Persistent field because a HeapHashMap entry should be removed
87 // just after a SQLTransactionSync becomes untraceable. If this field was a
88 // Member<>, we could not assume the destruction order of DatabaseSync,
89 // SQLTransactionSync, and the field. We can not make the field static
90 // because multiple worker threads create SQLTransactionSync.
91 GC_PLUGIN_IGNORE("http://crbug.com/353083")
92 PersistentHeapHashMap<WeakMember<SQLTransactionSync>, OwnPtr<TransactionObserver> > m_observers;
95 String m_lastErrorMessage;
97 friend class DatabaseManager;
98 friend class DatabaseServer; // FIXME: remove this when the backend has been split out.