xapian-core
1.5.0
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Handle a byte unit range. More...
Public Member Functions | |
UnitRangeProcessor (Xapian::valueno slot_, const std::string &str_=std::string()) | |
Constructor. More... | |
Xapian::Query | operator() (const std::string &begin, const std::string &end) |
Check for a valid byte value range. More... | |
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RangeProcessor () | |
Default constructor. | |
RangeProcessor (Xapian::valueno slot_, const std::string &str_=std::string(), unsigned flags_=0) | |
Constructor. More... | |
virtual | ~RangeProcessor () |
Destructor. | |
Xapian::Query | check_range (const std::string &b, const std::string &e) |
Check prefix/suffix on range. More... | |
RangeProcessor * | release () |
Start reference counting this object. More... | |
const RangeProcessor * | release () const |
Start reference counting this object. More... | |
Additional Inherited Members | |
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Xapian::valueno | slot |
The value slot to process. More... | |
std::string | str |
The prefix (or suffix with RP_SUFFIX) string to look for. | |
unsigned | flags |
Flags. More... | |
Handle a byte unit range.
This class must be used on values which have been encoded using Xapian::sortable_serialise() which turns numbers into strings which will sort in the same order as the numbers (the same values can be used to implement a numeric sort).
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inline |
Constructor.
slot_ | The value slot number to query. |
str_ | A string to look for to recognise values as belonging to this numeric range. |
The string supplied in str_ is the prefix plus ":" that defines the field upon which the range query is performed.
For example, if str_ is "size:", and the range processor has been added to the queryparser, the queryparser will accept "size:3K..10K" as a valid range.
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virtual |
Check for a valid byte value range.
If BEGIN..END is a valid numeric byte range with the specified prefix the prefix is removed, the string converted to a number, unit normalized and encoded with Xapian::sortable_serialise(), and a value range query is built.
begin | The start of the range as specified in the query string by the user. |
end | The end of the range as specified in the query string by the user. |
Reimplemented from Xapian::RangeProcessor.