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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 #include "V8SQLResultSetRowList.h"
     35 
     36 #include "SQLResultSetRowList.h"
     37 #include "V8Binding.h"
     38 #include "V8Proxy.h"
     39 
     40 namespace WebCore {
     41 
     42 v8::Handle<v8::Value> V8SQLResultSetRowList::itemCallback(const v8::Arguments& args)
     43 {
     44     INC_STATS("DOM.SQLResultSetRowList.item()");
     45 
     46     if (args.Length() == 0) {
     47         V8Proxy::throwError(V8Proxy::SyntaxError, "Item index is required.");
     48         return v8::Undefined();
     49     }
     50 
     51     if (!args[0]->IsNumber()) {
     52         V8Proxy::throwError(V8Proxy::TypeError, "Item index must be a number.");
     53         return v8::Undefined();
     54     }
     55 
     56     SQLResultSetRowList* rowList = V8SQLResultSetRowList::toNative(args.Holder());
     57 
     58     unsigned long index = args[0]->IntegerValue();
     59     if (index >= rowList->length()) {
     60         V8Proxy::throwError(V8Proxy::RangeError, "Item index is out of range.");
     61         return v8::Undefined();
     62     }
     63 
     64     v8::Local<v8::Object> item = v8::Object::New();
     65     unsigned numColumns = rowList->columnNames().size();
     66     unsigned valuesIndex = index * numColumns;
     67 
     68     for (unsigned i = 0; i < numColumns; ++i) {
     69         const SQLValue& sqlValue = rowList->values()[valuesIndex + i];
     70         v8::Handle<v8::Value> value;
     71         switch(sqlValue.type()) {
     72             case SQLValue::StringValue:
     73                 value = v8String(sqlValue.string());
     74                 break;
     75             case SQLValue::NullValue:
     76                 value = v8::Null();
     77                 break;
     78             case SQLValue::NumberValue:
     79                 value = v8::Number::New(sqlValue.number());
     80                 break;
     81             default:
     82                 ASSERT_NOT_REACHED();
     83         }
     84 
     85         item->Set(v8String(rowList->columnNames()[i]), value, static_cast<v8::PropertyAttribute>(v8::DontDelete|v8::ReadOnly));
     86     }
     87 
     88     return item;
     89 }
     90 
     91 } // namespace WebCore
     92 
     93 #endif
     94