/// <summary>
/// Appends the T-SQL equivalent of the specified predicate tokens.
/// </summary>
/// <param name="transactionSqlBuilder">StringBuilder object to append to.</param>
/// <param name="predicateToken">Predicate token.</param>
private static void AppendCriterionTSql(StringBuilder transactionSqlBuilder, PredicateToken predicateToken)
{
transactionSqlBuilder.Append(string.Format(
CultureInfo.InvariantCulture,
SearchConstants.TSQL_PREDICATE_CRITERIA,
predicateToken.PredicateName));
}
/// <summary>
/// Fetches predicate tokens.
/// </summary>
/// <param name="context"><see cref="ZentityContext" /> instance to fetch data with.</param>
/// <returns>Predicate tokens</returns>
private static IEnumerable <PredicateToken> FetchPredicateTokens(ZentityContext context)
{
XDocument mappings = Utility.ReadXmlConfigurationFile(Resources.SEARCH_PREDICATETOKENS_FILENAME);
IEnumerable <PredicateToken> xmlTokens;
if (mappings == null)
{
xmlTokens = new PredicateToken[0];
}
else
{
xmlTokens = mappings.Root
.Elements(XName.Get(SearchConstants.XML_TOKEN, SearchConstants.XMLNS_NAMESPACE))
.Select(token => new PredicateToken
{
Token = token.Attribute(SearchConstants.XML_NAME).Value,
PredicateName = token.Attribute(SearchConstants.XML_PREDICATE).Value,
ReverseRelation = Convert.ToBoolean(
token.Attribute(SearchConstants.XML_REVERSERELATION).Value,
CultureInfo.CurrentCulture)
});
}
IEnumerable <PredicateToken> databaseTokens = context.Predicates
.Select(predicate => new PredicateToken
{
Token = predicate.Name,
PredicateName = predicate.Name,
ReverseRelation = false
});
xmlTokens = xmlTokens.Concat(databaseTokens);
IEnumerable <PredicateToken> excludedPredicates = FetchExcludedPredicateTokens();
xmlTokens = xmlTokens
.Where(predicateToken => !excludedPredicates
.Select(excludedToken => excludedToken.PredicateName.ToLower())
.Contains(predicateToken.PredicateName.ToLower()));
return(xmlTokens);
}
/// <summary>
/// Fetches excluded predicate tokens.
/// </summary>
/// <returns>Excluded predicate tokens.</returns>
private static IEnumerable <PredicateToken> FetchExcludedPredicateTokens()
{
XDocument mappings = Utility.ReadXmlConfigurationFile(Resources.SEARCH_EXCLUDEDPREDICATES_FILENAME);
IEnumerable <PredicateToken> xmlTokens;
if (mappings == null)
{
xmlTokens = new PredicateToken[0];
}
else
{
xmlTokens = mappings.Root
.Elements(XName.Get(SearchConstants.XML_PREDICATE, SearchConstants.XMLNS_NAMESPACE))
.Select(token => new PredicateToken
{
Token = token.Attribute(SearchConstants.XML_NAME).Value,
PredicateName = token.Attribute(SearchConstants.XML_NAME).Value,
ReverseRelation = false
});
}
return(xmlTokens);
}
/// <summary>
/// Fetches the specified predicate token.
/// </summary>
/// <param name="token">Predicate token.</param>
/// <returns>Predicate mapping for the specified token.</returns>
public IEnumerable <PredicateToken> FetchPredicateToken(string token)
{
return(PredicateToken.FetchPredicateToken(token, context));
}
