public Expression <Func <TEntity, bool> > Compile <TEntity>(string query)
where TEntity : class
{
if (!_configuration.Mappings.TryGetValue(typeof(TEntity), out var entityConfiguration))
{
throw new InvalidOperationException("Entity has not been configured.");
}
// Parse the expression.
var expression = QueryExpressionParser.Parse(entityConfiguration, query);
// expression = CollectionRewriter.Rewrite(expression);
expression = BooleanRewriter.Rewrite(expression);
expression = ConversionRewriter.Rewrite(expression);
// Translate the expression.
return(QueryTranslator <TContext, TEntity> .Translate(expression));
}
public static string ToSql(QueryConfiguration <TContext> configuration, string query)
{
var entityType = typeof(TEntity);
if (!configuration.Mappings.TryGetValue(typeof(TEntity), out var entityConfiguration))
{
throw new InvalidOperationException("Entity has not been configured.");
}
// Parse the expression and rewrite it.
var expression = ExpressionParser.Parse(query);
expression = BooleanRewriter <TEntity> .Rewrite(expression);
expression = NullRewriter <TEntity> .Rewrite(expression);
// Generate the SQL statement.
return(GenerateSqlStatement(entityConfiguration, expression));
}
public IQueryable <TEntity> Query <TEntity>(TContext context, string query)
where TEntity : class
{
if (!_configuration.Mappings.TryGetValue(typeof(TEntity), out var entityConfiguration))
{
throw new InvalidOperationException("Entity has not been configured.");
}
// Parse the expression.
var expression = QueryExpressionParser.Parse(entityConfiguration, query);
expression = BooleanRewriter.Rewrite(expression);
expression = NullableRewriter.Rewrite(expression);
// Translate the expression.
var result = QueryTranslator <TContext, TEntity> .Translate(expression);
return(entityConfiguration.IsQueryType
? context.Query <TEntity>().Where(result)
: context.Set <TEntity>().Where(result));
}