1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "IDBObjectStore.h"
28
29#if ENABLE(INDEXED_DATABASE)
30
31#include "DOMStringList.h"
32#include "IDBAny.h"
33#include "IDBDatabaseException.h"
34#include "IDBIndex.h"
35#include "IDBKey.h"
36#include "IDBKeyRange.h"
37#include "IDBTransaction.h"
38#include "SerializedScriptValue.h"
39#include <wtf/UnusedParam.h>
40
41namespace WebCore {
42
43static const unsigned short defaultDirection = IDBCursor::NEXT;
44
45IDBObjectStore::IDBObjectStore(PassRefPtr<IDBObjectStoreBackendInterface> idbObjectStore, IDBTransaction* transaction)
46    : m_objectStore(idbObjectStore)
47    , m_transaction(transaction)
48{
49    ASSERT(m_objectStore);
50    ASSERT(m_transaction);
51    // We pass a reference to this object before it can be adopted.
52    relaxAdoptionRequirement();
53}
54
55String IDBObjectStore::name() const
56{
57    return m_objectStore->name();
58}
59
60String IDBObjectStore::keyPath() const
61{
62    return m_objectStore->keyPath();
63}
64
65PassRefPtr<DOMStringList> IDBObjectStore::indexNames() const
66{
67    return m_objectStore->indexNames();
68}
69
70PassRefPtr<IDBRequest> IDBObjectStore::get(ScriptExecutionContext* context, PassRefPtr<IDBKey> key, ExceptionCode& ec)
71{
72    RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), m_transaction.get());
73    m_objectStore->get(key, request, m_transaction->backend(), ec);
74    if (ec) {
75        request->markEarlyDeath();
76        return 0;
77    }
78    return request.release();
79}
80
81PassRefPtr<IDBRequest> IDBObjectStore::add(ScriptExecutionContext* context, PassRefPtr<SerializedScriptValue> value, PassRefPtr<IDBKey> key, ExceptionCode& ec)
82{
83    RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), m_transaction.get());
84    m_objectStore->put(value, key, IDBObjectStoreBackendInterface::AddOnly, request, m_transaction->backend(), ec);
85    if (ec) {
86        request->markEarlyDeath();
87        return 0;
88    }
89    return request.release();
90}
91
92PassRefPtr<IDBRequest> IDBObjectStore::put(ScriptExecutionContext* context, PassRefPtr<SerializedScriptValue> value, PassRefPtr<IDBKey> key, ExceptionCode& ec)
93{
94    RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), m_transaction.get());
95    m_objectStore->put(value, key, IDBObjectStoreBackendInterface::AddOrUpdate, request, m_transaction->backend(), ec);
96    if (ec) {
97        request->markEarlyDeath();
98        return 0;
99    }
100    return request.release();
101}
102
103PassRefPtr<IDBRequest> IDBObjectStore::deleteFunction(ScriptExecutionContext* context, PassRefPtr<IDBKey> key, ExceptionCode& ec)
104{
105    RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), m_transaction.get());
106    m_objectStore->deleteFunction(key, request, m_transaction->backend(), ec);
107    if (ec) {
108        request->markEarlyDeath();
109        return 0;
110    }
111    return request.release();
112}
113
114PassRefPtr<IDBRequest> IDBObjectStore::clear(ScriptExecutionContext* context, ExceptionCode& ec)
115{
116    RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), m_transaction.get());
117    m_objectStore->clear(request, m_transaction->backend(), ec);
118    if (ec) {
119        request->markEarlyDeath();
120        return 0;
121    }
122    return request.release();
123}
124
125PassRefPtr<IDBIndex> IDBObjectStore::createIndex(const String& name, const String& keyPath, const OptionsObject& options, ExceptionCode& ec)
126{
127    bool unique = false;
128    options.getKeyBool("unique", unique);
129
130    RefPtr<IDBIndexBackendInterface> index = m_objectStore->createIndex(name, keyPath, unique, m_transaction->backend(), ec);
131    ASSERT(!index != !ec); // If we didn't get an index, we should have gotten an exception code. And vice versa.
132    if (!index)
133        return 0;
134    return IDBIndex::create(index.release(), this, m_transaction.get());
135}
136
137PassRefPtr<IDBIndex> IDBObjectStore::index(const String& name, ExceptionCode& ec)
138{
139    RefPtr<IDBIndexBackendInterface> index = m_objectStore->index(name, ec);
140    ASSERT(!index != !ec); // If we didn't get an index, we should have gotten an exception code. And vice versa.
141    if (!index)
142        return 0;
143    return IDBIndex::create(index.release(), this, m_transaction.get());
144}
145
146void IDBObjectStore::deleteIndex(const String& name, ExceptionCode& ec)
147{
148    m_objectStore->deleteIndex(name, m_transaction->backend(), ec);
149}
150
151PassRefPtr<IDBRequest> IDBObjectStore::openCursor(ScriptExecutionContext* context, PassRefPtr<IDBKeyRange> range, unsigned short direction, ExceptionCode& ec)
152{
153    if (direction != IDBCursor::NEXT && direction != IDBCursor::NEXT_NO_DUPLICATE && direction != IDBCursor::PREV && direction != IDBCursor::PREV_NO_DUPLICATE) {
154        // FIXME: May need to change when specced: http://www.w3.org/Bugs/Public/show_bug.cgi?id=11406
155        ec = IDBDatabaseException::CONSTRAINT_ERR;
156        return 0;
157    }
158
159    RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), m_transaction.get());
160    request->setCursorType(IDBCursorBackendInterface::ObjectStoreCursor);
161    m_objectStore->openCursor(range, direction, request, m_transaction->backend(), ec);
162    if (ec) {
163        request->markEarlyDeath();
164        return 0;
165    }
166    return request.release();
167}
168
169} // namespace WebCore
170
171#endif // ENABLE(INDEXED_DATABASE)
172