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Chapter 10. Serializing native C++ types
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Chapter 10. Serializing native C++ types

Table of Contents

10.1. Serializing numeric data
10.2. Serializing pointers
10.2.1. Pointer tracking
10.2.2. Polymorphic pointers
10.3. Serializing arrays

The library handles all native C++ type except bitfields, unions, and references. References can be handled using split non-intrusive serialization. See the section on serializing user defined types below for details.

If a native type has been omitted, please contact the library maintainers for a correction.

10.1. Serializing numeric data

Booleans, integers (signed and unsigned) and enums (plain enums and typedef'd enums) are mapped to the SQL INTEGER type. The largest integer supported by SQLite3 is a 64-bit integer, which corresponds to the "[unsigned] long long int" type.

Floating point values (float and double) map to the SQL REAL type. If a floating point value is a NAN, it will be written as a SQL NULL value in the database.

The NAN that is returned by the library upon loading may not be the same kind of NAN that the variable originally had at the time that it was saved. If your code relies on the kind of NAN in a variable then you will probably need to store the NAN as a blob instead of as a floating point value - using a blob preserves the bit pattern of the variable, but doing so may make the data in the database unportable (because different CPUs may handle the NAN bit patterns differently).

The STL complex class is supported by the library.

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9.6. Selecting RTTI support  Home  10.2. Serializing pointers