private List<Resource> GetLearningRegistryResources(bool search, NLRSearchParameters nlrSearchParameters)
{
//call ElasticSearch web service
var elasticSearchProxy = new EsQueryProxy();
string theQuery = BuildQuery(nlrSearchParameters);
EsQueryResult result = elasticSearchProxy.EsQuery(theQuery);
StatusResponse statusResponse = result.Status;
bool isSuccess = statusResponse.IsSuccess();
if (isSuccess && result.QueryResults != null &&
result.QueryResults.Count >= NationalLearningRegistryMaxResults &&
search)
{
TelerikWindowManager.RadAlert(
"Search Request exceeds " + NationalLearningRegistryMaxResults.ToString() + " items. The first " +
NationalLearningRegistryMaxResults.ToString() + " have been returned.", 400, 100,
NationalLearningRegistry + " Response", "");
}
return isSuccess ? BuildLearningRegistryResultList(result) : new List<Resource>();
}
private string BuildQuery(NLRSearchParameters nlrSearchParameters)
{
if (nlrSearchParameters == null) return null;
if (string.IsNullOrEmpty(nlrSearchParameters.titleAndDescriptionSearchText) ||
nlrSearchParameters.titleAndDescriptionSearchText == "*")
{
nlrSearchParameters.titleAndDescriptionSearchText = string.Empty;
}
StringBuilder sb = new StringBuilder();
sb.Append("{\"query\": {");
sb.Append("\"bool\" : {");
sb.Append("\"must\" : [ ");
if (!string.IsNullOrEmpty(nlrSearchParameters.titleAndDescriptionSearchText))
{
sb.Append("{");
sb.Append("\"multi_match\": {");
sb.Append("\"query\": \"").Append(nlrSearchParameters.titleAndDescriptionSearchText).Append("\",");
sb.Append("\"fields\":");
sb.Append("[");
//Multi-match query on "title", "description" and "keywords" fields
//sb.Append("\"title\", \"description\", \"keywords\"");
sb.Append("\"title\", \"description\"");
sb.Append("],");
sb.Append("\"operator\": \"or\"");
sb.Append("}");
sb.Append("},");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.creator))
{
//Multi-match query on both "creator" and "author" fields
sb.Append("{\"multi_match\": {\"query\": \"")
.Append(nlrSearchParameters.creator)
.Append("\",\"fields\":[ \"creator\", \"author\"],\"operator\": \"or\"}},");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.publisher))
{
sb.Append("{ \"match\": { \"publisher\" : \"").Append(nlrSearchParameters.publisher).Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.inLanguage))
{
string theLanguage = MapLanguage(nlrSearchParameters.inLanguage);
sb.Append("{ \"match\": { \"language\" : \"").Append(theLanguage).Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.keywords))
{
//This is an "_all" query so it will try and match the search term in "all" fields
sb.Append("{ \"match\": { \"_all\" : \"").Append(nlrSearchParameters.keywords).Append("\" } },");
}
if (nlrSearchParameters.educationalUse.Count > 0)
{
string educationalUses = string.Join(" ", nlrSearchParameters.educationalUse.ToArray());
sb.Append("{ \"match\": { \"educationalUses\" : \"")
.Append(educationalUses.ToLower())
.Append("\" } },");
}
//if (!string.IsNullOrEmpty(nlrSearchParameters.author))
//{
// sb.Append("{ \"match\": { \"author\" : \"").Append(nlrSearchParameters.author).Append("\" } },");
//}
if (nlrSearchParameters.interactivityType.Count > 0)
{
string interactivityTypes = string.Join(" ", nlrSearchParameters.interactivityType.ToArray());
sb.Append("{ \"match\": { \"interactivityType\" : \"")
.Append(interactivityTypes.ToLower())
.Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.accessibilityFeature))
{
sb.Append("{ \"match\": { \"accessibilityFeature\" : \"")
.Append(nlrSearchParameters.accessibilityFeature)
.Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.accessibilityHazard))
{
sb.Append("{ \"match\": { \"accessibilityHazard\" : \"")
.Append(nlrSearchParameters.accessibilityHazard)
.Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.bookFormat))
{
sb.Append("{ \"match\": { \"bookFormat\" : \"").Append(nlrSearchParameters.bookFormat).Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.copyrightHolder))
{
sb.Append("{ \"match\": { \"copyrightHolder\" : \"")
.Append(nlrSearchParameters.copyrightHolder)
.Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.learningResourceType))
{
sb.Append("{ \"match\": { \"learningResourceType\" : \"")
.Append(nlrSearchParameters.learningResourceType)
.Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.accessibilityControl))
{
sb.Append("{ \"match\": { \"accessibilityControl\" : \"")
.Append(nlrSearchParameters.accessibilityControl)
.Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.typicalAgeRange))
{
sb.Append("{ \"match\": { \"typicalAgeRange\" : \"")
.Append(nlrSearchParameters.typicalAgeRange)
.Append("\" } },");
}
if (nlrSearchParameters.educationalRole.Count > 0)
{
string educationalRoles = string.Join(" ", nlrSearchParameters.educationalRole.ToArray());
sb.Append("{ \"match\": { \"audience\" : \"")
.Append(educationalRoles.ToLower())
.Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.usageRightsURL))
{
if (nlrSearchParameters.usageRightsURL.Equals("Custom", StringComparison.OrdinalIgnoreCase))
{
sb.Append("{\"wildcard\": { \"usageRightsURL\": { \"value\": \"*\" }}},");
}
else
{
sb.Append("{ \"match\": { \"usageRightsURL\" : \"")
.Append(nlrSearchParameters.usageRightsURL)
.Append("\" } },");
}
}
if (nlrSearchParameters.educationalRole.Count > 0)
{
string educationalRoles = string.Join(" ", nlrSearchParameters.educationalRole.ToArray());
sb.Append("{ \"match\": { \"audience\" : \"")
.Append(educationalRoles.ToLower())
.Append("\" } },");
}
if (!string.IsNullOrEmpty(nlrSearchParameters.usageRightsURL))
{
if (nlrSearchParameters.usageRightsURL.Equals("Custom", StringComparison.OrdinalIgnoreCase))
{
sb.Append("{\"wildcard\": { \"usageRightsURL\": { \"value\": \"*\" }}},");
}
else
{
sb.Append("{ \"match\": { \"usageRightsURL\" : \"")
.Append(nlrSearchParameters.usageRightsURL)
.Append("\" } },");
}
}
//remove trailing comma...
var index = sb.ToString().LastIndexOf(',');
if (index >= 0)
sb.Remove(index, 1);
//////////////////////////
sb.Append("]");
sb.Append("}},\"size\": ").Append(NationalLearningRegistryMaxResults.ToString());
sb.Append("}");
return sb.ToString();
}
private NLRSearchParameters getNLRSearchParameters(string criteriaSelectionParameters,
TagCriteriaSelectionParameters tagCriteriaSelectionParameters)
{
NLRSearchParameters theNLRSearchParameters = new NLRSearchParameters();
theNLRSearchParameters.creator = tagCriteriaSelectionParameters.Creator;
theNLRSearchParameters.publisher = tagCriteriaSelectionParameters.Publisher;
//theNLRSearchParameters.usageRightsURL = tagCriteriaSelectionParameters.UseRightUrl;
//theNLRSearchParameters.author = tagCriteriaSelectionParameters.Author;
theNLRSearchParameters.created = tagCriteriaSelectionParameters.DateCreated.ToString();
//theNLRSearchParameters.accessibilityControl
//theNLRSearchParameters.accessibilityFeature
//theNLRSearchParameters.accessibilityHazard
//theNLRSearchParameters.bookFormat
//theNLRSearchParameters.copyrightHolder
theNLRSearchParameters.title =
theNLRSearchParameters.description =
theNLRSearchParameters.titleAndDescriptionSearchText = criteriaSelectionParameters;
if (tagCriteriaSelectionParameters.Language > -1)
{
theNLRSearchParameters.inLanguage =
Enum.Parse(typeof(LanguageType), tagCriteriaSelectionParameters.Language.ToString()).ToString();
}
theNLRSearchParameters.typicalAgeRange = tagCriteriaSelectionParameters.Ages;
theNLRSearchParameters.interactivityType = tagCriteriaSelectionParameters.InteractivityTypes;
theNLRSearchParameters.educationalUse = tagCriteriaSelectionParameters.EducationalUses;
theNLRSearchParameters.educationalRole = tagCriteriaSelectionParameters.EndUsers;
theNLRSearchParameters.usageRightsURL = tagCriteriaSelectionParameters.UseRightUrlTxt;
theNLRSearchParameters.keywords = tagCriteriaSelectionParameters.Keywords;
theNLRSearchParameters.educationalRole = tagCriteriaSelectionParameters.EndUsers;
theNLRSearchParameters.usageRightsURL = tagCriteriaSelectionParameters.UseRightUrlTxt;
return theNLRSearchParameters;
}
