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joko |
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# $Id: Common.pm,v 1.1 2002/10/10 03:26:00 cvsjoko Exp $ |
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# |
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# $Log: Common.pm,v $ |
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# Revision 1.1 2002/10/10 03:26:00 cvsjoko |
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# + new |
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# |
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############################################## |
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package Data::Transform::OO; |
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use strict; |
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use warnings; |
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require Exporter; |
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our @ISA = qw( Exporter ); |
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our @EXPORT_OK = qw( &object2hash &hash2object ); |
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use Data::Dumper; |
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use Data::Transform::Deep qw( getStructSlotByStringyAddress ); |
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sub object2hash { |
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my $object = shift; |
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my $options = shift; |
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my $deref = var_deref($object); |
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var2utf8($deref) if ($options->{utf8}); |
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return $deref; |
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} |
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# todo: maybe do diff(s) here sometimes!? |
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sub hash2object { |
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my $object = shift; |
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my $data = shift; |
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my $options = shift; |
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# "patch" needed 'cause php passes numerical-indexed-arrays as hash-tables, |
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# this method corrects this |
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var_NumericalHashToArray($data) if ($options->{php}); |
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# utf8-conversion/-encoding (essential for I18N) |
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var_utf2iso($data) if ($options->{utf8}); |
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# get fresh object from database |
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# todo: |
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# - handle "locked" objects !!! |
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# - check if already another update occoured (object-revisioning needed!) |
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#my $obj = $self->getObject($oid); |
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# mix changes into fresh object and save it back |
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hash2object_traverse_mixin($object, $data); |
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# done in core mixin function? |
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#$self->{storage}->update($obj); |
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# we should "undef" some objects here to destroy them in memory and enforce reloading when used next time |
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# simulate: |
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#$self->{storage}->disconnect(); |
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} |
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# ------------------------------------ |
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# core mixin function |
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# TODO-FEATURE: make this possible in a reverse way: object is empty (no fields) and gets filled up by mixin-data |
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# remember keys of structures we are traversing |
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# this is a HACK: |
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# - don't (!!!) "packageglobal" @indexstack |
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# - it will lead to problems with parallelism! |
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my @indexstack; |
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# traverse a deeply nested structure, mix in values from given hash, update underlying tangram-object |
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sub hash2object_traverse_mixin { |
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my $object = shift; |
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my $data = shift; |
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my $bool_recursion = shift; |
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# clear our key - stack if we are called from user-code (non-recursively) |
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@indexstack = () if (!$bool_recursion); |
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my $classname = ref $object; |
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# if ($classname) { |
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# print STDERR "*****************", Dumper(Class::Tangram::attribute_types($classname)), "\n"; |
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# } |
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# parser: detected OBJECT (a Tangram one?) (reftype == HASH) (assume) |
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# what's exactly done here? hmmm.... it works ;) |
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# maybe a HACK: please try not to use "IntrHash"es, maybe this cannot handle them!!! |
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# extend! check! |
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if ((attributes::reftype($object) eq 'HASH') && (ref($object) ne 'HASH') && (ref($object) ne 'ARRAY')) { |
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# print STDERR "===", "reftype: ", attributes::reftype($obj), "\n"; |
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# loop through fields of object (Tangram-object) |
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foreach (keys %{$object}) { |
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push @indexstack, $_; |
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# determine type of object |
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my $ref = ref $object->{$_}; |
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# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
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if ($ref) { |
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hash2object_traverse_mixin($object->{$_}, $data, 1); |
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} else { |
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my $val = getStructSlotByStringyAddress($data, \@indexstack); |
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$object->{$_} = $val; |
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} |
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pop @indexstack; |
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} |
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# save object to database ... |
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# ... do an update if it already exists, do an insert if it doesn't |
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# my $objectId = $self->{storage}->id($obj); |
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# $logger->debug( __PACKAGE__ . "->saveObjectFromHash_traverse_mixin_update( object $obj objectId $objectId )" ); |
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# if ($objectId) { |
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# $self->{storage}->update($obj); |
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#print __PACKAGE__ . ":", "\n"; |
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#print Dumper($object); |
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# } else { |
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# $self->{storage}->insert($obj); |
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# } |
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} |
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#&& ( ref($obj) ne 'HASH' ) |
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# loop through entries of array (IntrArray, isn't it?) |
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if ((ref $object) eq 'ARRAY') { |
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# print STDERR "===", "refttype ", attributes::reftype($obj), "\n"; |
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my $i = 0; |
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foreach (@{$object}) { |
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push @indexstack, $i; |
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my $ref = ref $_; |
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# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
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if ($ref && $_) { |
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hash2object_traverse_mixin($_, $data, 1); |
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} else { |
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$object->[$i] = $_; |
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} |
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pop @indexstack; |
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$i++; |
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} |
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} |
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} |
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