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      1 /*
      2  * Copyright (C) 2009 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 
     33 #if ENABLE(DATABASE)
     34 
     35 #include "V8SQLTransaction.h"
     36 
     37 #include "Database.h"
     38 #include "SQLValue.h"
     39 #include "V8Binding.h"
     40 #include "V8CustomSQLStatementCallback.h"
     41 #include "V8CustomSQLStatementErrorCallback.h"
     42 #include "V8Proxy.h"
     43 #include <wtf/Vector.h>
     44 
     45 using namespace WTF;
     46 
     47 namespace WebCore {
     48 
     49 v8::Handle<v8::Value> V8SQLTransaction::executeSqlCallback(const v8::Arguments& args)
     50 {
     51     INC_STATS("DOM.SQLTransaction.executeSql()");
     52 
     53     if (args.Length() == 0)
     54         return throwError("SQL statement is required.", V8Proxy::SyntaxError);
     55 
     56     String statement = toWebCoreString(args[0]);
     57 
     58     Vector<SQLValue> sqlValues;
     59 
     60     if (args.Length() > 1 && !isUndefinedOrNull(args[1])) {
     61         if (args[1]->IsObject()) {
     62             uint32_t sqlArgsLength = 0;
     63             v8::Local<v8::Object> sqlArgsObject = args[1]->ToObject();
     64             v8::Local<v8::Value> lengthGetter;
     65             {
     66                 v8::TryCatch block;
     67                 lengthGetter = sqlArgsObject->Get(v8::String::New("length"));
     68                 if (block.HasCaught())
     69                     return throwError(block.Exception());
     70             }
     71 
     72             if (isUndefinedOrNull(lengthGetter))
     73                 sqlArgsLength = sqlArgsObject->GetPropertyNames()->Length();
     74             else
     75                 sqlArgsLength = lengthGetter->Uint32Value();
     76 
     77             for (unsigned int i = 0; i < sqlArgsLength; ++i) {
     78                 v8::Local<v8::Integer> key = v8::Integer::New(i);
     79                 v8::Local<v8::Value> value;
     80                 {
     81                     v8::TryCatch block;
     82                     value = sqlArgsObject->Get(key);
     83                     if (block.HasCaught())
     84                         return throwError(block.Exception());
     85                 }
     86 
     87                 if (value.IsEmpty() || value->IsNull())
     88                     sqlValues.append(SQLValue());
     89                 else if (value->IsNumber())
     90                     sqlValues.append(SQLValue(value->NumberValue()));
     91                 else
     92                     sqlValues.append(SQLValue(toWebCoreString(value)));
     93             }
     94         } else
     95             return throwError("sqlArgs should be array or object!", V8Proxy::TypeError);
     96     }
     97 
     98     SQLTransaction* transaction = V8SQLTransaction::toNative(args.Holder());
     99 
    100     Frame* frame = V8Proxy::retrieveFrameForCurrentContext();
    101 
    102     RefPtr<SQLStatementCallback> callback;
    103     if (args.Length() > 2 && !isUndefinedOrNull(args[2])) {
    104         if (!args[2]->IsObject())
    105             return throwError("Statement callback must be of valid type.", V8Proxy::TypeError);
    106 
    107         if (frame)
    108             callback = V8CustomSQLStatementCallback::create(args[2], frame);
    109     }
    110 
    111     RefPtr<SQLStatementErrorCallback> errorCallback;
    112     if (args.Length() > 3 && !isUndefinedOrNull(args[3])) {
    113         if (!args[3]->IsObject())
    114             return throwError("Statement error callback must be of valid type.", V8Proxy::TypeError);
    115 
    116         if (frame)
    117             errorCallback = V8CustomSQLStatementErrorCallback::create(args[3], frame);
    118     }
    119 
    120     ExceptionCode ec = 0;
    121     transaction->executeSQL(statement, sqlValues, callback, errorCallback, ec);
    122     V8Proxy::setDOMException(ec);
    123 
    124     return v8::Undefined();
    125 }
    126 
    127 } // namespace WebCore
    128 
    129 #endif
    130 
    131