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 "IDBIndex.h" 28 29 #if ENABLE(INDEXED_DATABASE) 30 31 #include "IDBCursorBackendInterface.h" 32 #include "IDBDatabaseException.h" 33 #include "IDBIndexBackendInterface.h" 34 #include "IDBKey.h" 35 #include "IDBKeyRange.h" 36 #include "IDBObjectStore.h" 37 #include "IDBRequest.h" 38 #include "IDBTransaction.h" 39 40 namespace WebCore { 41 42 static const unsigned short defaultDirection = IDBCursor::NEXT; 43 44 IDBIndex::IDBIndex(PassRefPtr<IDBIndexBackendInterface> backend, IDBObjectStore* objectStore, IDBTransaction* transaction) 45 : m_backend(backend) 46 , m_objectStore(objectStore) 47 , m_transaction(transaction) 48 { 49 ASSERT(m_backend); 50 ASSERT(m_objectStore); 51 ASSERT(m_transaction); 52 } 53 54 IDBIndex::~IDBIndex() 55 { 56 } 57 58 PassRefPtr<IDBRequest> IDBIndex::openCursor(ScriptExecutionContext* context, PassRefPtr<IDBKeyRange> keyRange, unsigned short direction, ExceptionCode& ec) 59 { 60 if (direction != IDBCursor::NEXT && direction != IDBCursor::NEXT_NO_DUPLICATE && direction != IDBCursor::PREV && direction != IDBCursor::PREV_NO_DUPLICATE) { 61 // FIXME: May need to change when specced: http://www.w3.org/Bugs/Public/show_bug.cgi?id=11406 62 ec = IDBDatabaseException::CONSTRAINT_ERR; 63 return 0; 64 } 65 66 RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), m_transaction.get()); 67 request->setCursorType(IDBCursorBackendInterface::IndexCursor); 68 m_backend->openCursor(keyRange, direction, request, m_transaction->backend(), ec); 69 if (ec) { 70 request->markEarlyDeath(); 71 return 0; 72 } 73 return request; 74 } 75 76 PassRefPtr<IDBRequest> IDBIndex::openKeyCursor(ScriptExecutionContext* context, PassRefPtr<IDBKeyRange> keyRange, unsigned short direction, ExceptionCode& ec) 77 { 78 if (direction != IDBCursor::NEXT && direction != IDBCursor::NEXT_NO_DUPLICATE && direction != IDBCursor::PREV && direction != IDBCursor::PREV_NO_DUPLICATE) { 79 // FIXME: May need to change when specced: http://www.w3.org/Bugs/Public/show_bug.cgi?id=11406 80 ec = IDBDatabaseException::CONSTRAINT_ERR; 81 return 0; 82 } 83 84 RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), m_transaction.get()); 85 request->setCursorType(IDBCursorBackendInterface::IndexKeyCursor); 86 m_backend->openKeyCursor(keyRange, direction, request, m_transaction->backend(), ec); 87 if (ec) { 88 request->markEarlyDeath(); 89 return 0; 90 } 91 return request; 92 } 93 94 PassRefPtr<IDBRequest> IDBIndex::get(ScriptExecutionContext* context, PassRefPtr<IDBKey> key, ExceptionCode& ec) 95 { 96 RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), m_transaction.get()); 97 m_backend->get(key, request, m_transaction->backend(), ec); 98 if (ec) { 99 request->markEarlyDeath(); 100 return 0; 101 } 102 return request; 103 } 104 105 PassRefPtr<IDBRequest> IDBIndex::getKey(ScriptExecutionContext* context, PassRefPtr<IDBKey> key, ExceptionCode& ec) 106 { 107 RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::create(this), m_transaction.get()); 108 m_backend->getKey(key, request, m_transaction->backend(), ec); 109 if (ec) { 110 request->markEarlyDeath(); 111 return 0; 112 } 113 return request; 114 } 115 116 } // namespace WebCore 117 118 #endif // ENABLE(INDEXED_DATABASE) 119