// コンストラクタ
/// <summary>
/// アマ検の検索のためのアクションのインスタンスを開始します。
/// </summary>
public AmazonDoSearch(AmazonSearch model, AbsPath path, string query, AmazonIndexType ait, int page) : base(model, path){
myPath = myModel.BasePath;
myQuery = query;
myIndexType = ait;
myPageNum = page;
if(myPageNum < 1) myPageNum = 1;
}
protected XmlNode GetSelect(AmazonIndexType selectedType){
XmlNodeList xnl = Model.Document.DocumentElement.GetElementsByTagName(AmazonSearch.AmazonFormOptionsName);
if(xnl == null || xnl.Count == 0) throw new Exception(AmazonSearch.AmazonFormOptionsName + "要素がみつかりません。");
XmlElement options = xnl[0] as XmlElement;
XmlNode result = Html.CreateDocumentFragment();
XmlElement label = Html.Create("label", null, "検索対象:");
label.SetAttribute("for", AmazonSearch.IndexTypeName);
result.AppendChild(label);
XmlElement select = Html.Create("select");
select.SetAttribute("name", AmazonSearch.IndexTypeName);
select.SetAttribute("id", AmazonSearch.IndexTypeName);
foreach(XmlElement e in options.GetElementsByTagName(AmazonSearch.OptionName)){
XmlElement option = Html.Create("option");
option.InnerText = e.InnerText;
string val = e.GetAttributeValue(AmazonSearch.ValueAttributeName);
AmazonIndexType currentType = (AmazonIndexType)Enum.Parse(typeof(AmazonIndexType), val, true);
if((selectedType == AmazonIndexType.None && e.Attributes["selected"] != null) || currentType == selectedType){
option.SetAttribute("selected", "selected");
}
option.SetAttribute("value", currentType.ToString());
select.AppendChild(option);
}
result.AppendChild(select);
return result;
}
// 検索結果を取得します。
// キャッシュにあればそこから、無ければリクエストを行います。
public AmazonItemList GetSearchItem(AmazonIndexType index, string query, int pageNum){
string key = index.ToString() + "/" + query + "/" + pageNum.ToString();
if(myItemsDic.ContainsKey(key)) return myItemsDic[key];
AmazonItemList i = Search(index, query, pageNum);
myItemsDic[key] = i;
return i;
}
// キーワードとページ数、検索対象のAmazonIndexTypeを指定して、ItemSearchの結果を含むXmlDocumentを取得します。
public XmlDocument GetItemSearchXml(string keywords, AmazonIndexType type, int itemPage){
Dictionary<string, string> requestParams = new Dictionary<string, String>();
requestParams["Service"] = "AWSECommerceService";
requestParams["Version"] = "2009-03-31";
requestParams["AssociateTag"] = myManager.IniData.AmazonAssociateTag;
requestParams["Operation"] = "ItemSearch";
requestParams["Keywords"] = keywords;
requestParams["ItemPage"] = itemPage.ToString();
requestParams["SearchIndex"] = type.ToString();
requestParams["ResponseGroup"] = "ItemAttributes,Images";
string requestUrl = myHelper.Sign(requestParams);
return Request(requestUrl);
}
// プロテクトメソッド
protected XmlElement GetSearchForm(string query, AmazonIndexType selectedType){
XmlElement result = Html.Form();
XmlElement fs = Html.Fieldset("Amazon検索");
XmlElement p1 = Html.P();
p1.AppendChild(GetSelect(selectedType));
fs.AppendChild(p1);
XmlElement p2 = Html.P();
p2.AppendChild(Html.Input(AmazonSearch.QueryName, query, "キーワード"));
fs.AppendChild(p2);
XmlElement submitP = Html.P("submit", Html.Submit("検索"));
fs.AppendChild(submitP);
result.AppendChild(fs);
return result;
}
// キーワードと検索対象を指定して、ItemSearchの結果を含むXmlDocumentを取得します。
public XmlDocument GetItemSearchXml(string keywords, AmazonIndexType type){
return GetItemSearchXml(keywords, type, 1);
}
// Web サービスにリクエストを発行して検索結果を取得します。
private AmazonItemList Search(AmazonIndexType index, string q, int pageNum){
XmlDocument result = Aws.GetItemSearchXml(q, index, pageNum);
if(result == null){
throw new Exception("XMLが取得できませんでした。");
}
return AmazonItemList.Parse(result);
}
