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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" Tangram::Type::Dump::Storable \- map any Perl object as scalar dump via Storable .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 2 \& use Tangram::Core; \& use Tangram::Type::Dump::Storable; # always \& \& $schema = Tangram::Schema\->new( \& classes => { NaturalPerson => { fields => { \& \& storable => \& { \& diary => # diary is a perl hash \& { \& col => \*(Aqdiarydata\*(Aq, \& sql => \*(AqBLOB\*(Aq, \& indent => 0, \& terse => 1, \& purity => 0 \& }, \& \& lucky_numbers => \*(Aqint\*(Aq, # use defaults \& } .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" Maps arbitrary Perl data structures by serializing to a string representation. The persistent fields are grouped in a hash under the \&\f(CW\*(C`storable\*(C'\fR key in the field hash. .PP Serialization is done by Storable::freeze, which traverses the Perl data structure and creates a binary representation of it. The resulting string will be mapped to the \s-1DBMS\s0 as a scalar value. During restore, the scalar value will be restored with Storable::thaw to reconstruct the original data structure. .PP The structure should be able to contain pretty much anything that may be safely dumped by Storable. However, be aware that \&\fB\f(BITangram::Type::Dump::flatten()\fB\fR must be able to find the persistent objects in the field. Unless you're using classes that are implemented in C and contain other objects, you should be fine (Set::Object has a special work-around). .PP The field names are passed in a hash that associates a field name with a field descriptor. The field descriptor may be either a hash or a string. The hash uses the following fields: .IP "\(bu" 4 col .IP "\(bu" 4 sql .IP "\(bu" 4 indent .IP "\(bu" 4 terse .IP "\(bu" 4 purity .PP The optional fields \f(CW\*(C`col\*(C'\fR and \f(CW\*(C`sql\*(C'\fR specify the column name and the column type for the scalar value in the database. If not present, \&\f(CW\*(C`col\*(C'\fR defaults to the field name and \f(CW\*(C`sql\*(C'\fR defaults to \s-1VARCHAR\s0(255). Values will be always quoted as they are passed to the database. .PP The remaining optional fields control the serialization process. They will be passed down to Data::Dumper as values to the corresponding Data::Dumper options. The default settings are: no indentation (\f(CW\*(C`indent=0\*(C'\fR), compact format (\f(CW\*(C`terse=1\*(C'\fR), and quick dump (\f(CW\*(C`purity=0\*(C'\fR). .SH "AUTHOR" .IX Header "AUTHOR" This mapping was contributed by Gabor Herr