/// <inheritdoc/>
public virtual void RenderConvertFrom(Expression innerExpression, IN1QlExpressionTreeVisitor expressionTreeVisitor)
{
var unwrapped = UnwrapInverseMethod(innerExpression, ConvertToMethods.Values);
if (unwrapped != null)
{
expressionTreeVisitor.Visit(unwrapped);
}
else
{
RenderConvertFromMethod(innerExpression, expressionTreeVisitor);
}
}
/// <inheritdoc/>
protected override void RenderConvertedConstant(ConstantExpression constantExpression, IN1QlExpressionTreeVisitor expressionTreeVisitor)
{
if (constantExpression.Value == null)
{
// Don't try to convert nulls
expressionTreeVisitor.Visit(constantExpression);
}
else
{
var dateTime = GetDateTime(constantExpression);
var unixMilliseconds = (dateTime - UnixEpoch).TotalMilliseconds;
// ReSharper disable once CompareOfFloatsByEqualityOperator
if (Math.Floor(unixMilliseconds) == unixMilliseconds)
{
expressionTreeVisitor.Expression.Append((long)unixMilliseconds);
}
else
{
expressionTreeVisitor.Expression.Append(unixMilliseconds);
}
}
}
/// <inheritdoc/>
protected override void RenderConvertFromMethod(Expression innerExpression, IN1QlExpressionTreeVisitor expressionTreeVisitor)
{
expressionTreeVisitor.Expression.Append("MILLIS_TO_STR(");
expressionTreeVisitor.Visit(innerExpression);
expressionTreeVisitor.Expression.Append(')');
}
protected override void RenderConvertedConstant(ConstantExpression constantExpression, IN1QlExpressionTreeVisitor expressionTreeVisitor)
{
throw new NotImplementedException();
}
protected override void RenderConvertFromMethod(Expression innerExpression, IN1QlExpressionTreeVisitor expressionTreeVisitor)
{
throw new NotImplementedException();
}
/// <summary>
/// Renders a constant which has been preconverted to the custom format onto a N1QL query.
/// </summary>
/// <param name="constantExpression">The expression being converted.</param>
/// <param name="expressionTreeVisitor"><see cref="IN1QlExpressionTreeVisitor"/> rendering the query.</param>
protected abstract void RenderConvertedConstant(ConstantExpression constantExpression,
IN1QlExpressionTreeVisitor expressionTreeVisitor);
/// <summary>
/// Renders a conversion from the custom format to the standard format onto a N1QL query.
/// </summary>
/// <param name="innerExpression">The expression being converted.</param>
/// <param name="expressionTreeVisitor"><see cref="IN1QlExpressionTreeVisitor"/> rendering the query.</param>
protected abstract void RenderConvertFromMethod(Expression innerExpression,
IN1QlExpressionTreeVisitor expressionTreeVisitor);
/// <inheritdoc/>
protected override void RenderConvertedConstant(ConstantExpression constantExpression, IN1QlExpressionTreeVisitor expressionTreeVisitor)
{
if (constantExpression.Value == null)
{
// Don't try to convert nulls
expressionTreeVisitor.Visit(constantExpression);
}
else
{
using (var writer = new JTokenWriter())
{
_jsonConverter.WriteJson(writer, constantExpression.Value,
JsonSerializer.CreateDefault());
expressionTreeVisitor.Visit(Expression.Constant(writer.Token.ToString()));
}
}
}
/// <inheritdoc/>
protected override void RenderConvertFromMethod(Expression innerExpression, IN1QlExpressionTreeVisitor expressionTreeVisitor)
{
// Don't try to convert in N1QL, for enums we're only supporting constants as strings
expressionTreeVisitor.Visit(innerExpression);
}
protected override void RenderConvertToMethod(Expression innerExpression, IN1QlExpressionTreeVisitor expressionTreeVisitor)
{
expressionTreeVisitor.Visit(innerExpression);
}
protected override void RenderConvertedConstant(ConstantExpression constantExpression, IN1QlExpressionTreeVisitor expressionTreeVisitor)
{
expressionTreeVisitor.Expression.Append("'");
expressionTreeVisitor.Visit(constantExpression);
expressionTreeVisitor.Expression.Append("'");
}
