/// <summary>
/// Makes a TermQuery for the given MappedField and expression.
/// </summary>
/// <param name="field">
/// The MappedField to create the query for.
/// </param>
/// <param name="term">
/// The constant to match in the query.
/// </param>
/// <returns>
/// An instance of TermQuery.
/// </returns>
private static TermQuery MakeTermQuery(MappedField field, Expression term)
{
Debug.Assert(null != field, "The mapped field must not be null.");
Debug.Assert(null != term, "The term must not be null.");
Term tm;
switch (field.Type)
{
case MappedField.FieldType.Float:
{
BytesRef bytes = new BytesRef(NumericUtils.BUF_SIZE_INT64);
long l = NumericUtils.DoubleToSortableInt64(field.GetValueFromExpression <float>(term));
NumericUtils.Int64ToPrefixCoded(l, 0, bytes);
tm = new Term(field.Name, bytes);
break;
}
case MappedField.FieldType.Double:
{
BytesRef bytes = new BytesRef(NumericUtils.BUF_SIZE_INT64);
long l = NumericUtils.DoubleToSortableInt64(field.GetValueFromExpression <double>(term));
NumericUtils.Int64ToPrefixCoded(l, 0, bytes);
tm = new Term(field.Name, bytes);
break;
}
case MappedField.FieldType.Short:
case MappedField.FieldType.Int:
{
BytesRef bytes = new BytesRef(NumericUtils.BUF_SIZE_INT32);
NumericUtils.Int32ToPrefixCoded(field.GetValueFromExpression <int>(term), 0, bytes);
tm = new Term(field.Name, bytes);
break;
}
case MappedField.FieldType.Long:
{
BytesRef bytes = new BytesRef(NumericUtils.BUF_SIZE_INT64);
NumericUtils.Int64ToPrefixCoded(field.GetValueFromExpression <long>(term), 0, bytes);
tm = new Term(field.Name, bytes);
break;
}
case MappedField.FieldType.String:
{
tm = new Term(field.Name, field.GetValueFromExpression <string>(term));
break;
}
default:
throw new InvalidOperationException(String.Format(
"Cannot make a TermQuery for field '{0}' of type {1}.",
field.Name, field.Type));
}
return(new TermQuery(tm));
}
/// <summary>
/// Makes a TermQuery for the given MappedField and expression.
/// </summary>
/// <param name="field">
/// The MappedField to create the query for.
/// </param>
/// <param name="term">
/// The constant to match in the query.
/// </param>
/// <returns>
/// An instance of TermQuery.
/// </returns>
private static TermQuery MakeTermQuery(MappedField field, Expression term)
{
Debug.Assert(null != field, "The mapped field must not be null.");
Debug.Assert(null != term, "The term must not be null.");
string queryTerm;
switch (field.Type)
{
case MappedField.FieldType.Float:
queryTerm = NumericUtils.FloatToPrefixCoded(field.GetValueFromExpression <float>(term));
break;
case MappedField.FieldType.Double:
queryTerm = NumericUtils.DoubleToPrefixCoded(field.GetValueFromExpression <double>(term));
break;
case MappedField.FieldType.Short:
queryTerm = NumericUtils.IntToPrefixCoded(field.GetValueFromExpression <short>(term));
break;
case MappedField.FieldType.Int:
queryTerm = NumericUtils.IntToPrefixCoded(field.GetValueFromExpression <int>(term));
break;
case MappedField.FieldType.Long:
queryTerm = NumericUtils.LongToPrefixCoded(field.GetValueFromExpression <long>(term));
break;
case MappedField.FieldType.String:
queryTerm = field.GetValueFromExpression <string>(term);
break;
default:
throw new InvalidOperationException(String.Format(
"Cannot make a TermQuery for field '{0}' of type {1}.",
field.Name, field.Type));
}
return(new TermQuery(new Term(field.Name, queryTerm)));
}
