| 1 |
############################################### |
| 2 |
# |
| 3 |
# $Id: Abstract.pm,v 1.2 2002/10/25 11:45:10 joko Exp $ |
| 4 |
# |
| 5 |
# $Log: Abstract.pm,v $ |
| 6 |
# Revision 1.2 2002/10/25 11:45:10 joko |
| 7 |
# + enhanced robustness |
| 8 |
# + more logging for debug-levels |
| 9 |
# |
| 10 |
# Revision 1.1 2002/10/17 00:07:14 joko |
| 11 |
# + new |
| 12 |
# |
| 13 |
# |
| 14 |
############################################### |
| 15 |
|
| 16 |
# ==================================== |
| 17 |
package Data::Storage::Schema::Abstract; |
| 18 |
|
| 19 |
use strict; |
| 20 |
use warnings; |
| 21 |
|
| 22 |
use Tangram; |
| 23 |
use Class::Tangram; |
| 24 |
|
| 25 |
use Tangram::RawDate; |
| 26 |
use Tangram::RawTime; |
| 27 |
use Tangram::RawDateTime; |
| 28 |
|
| 29 |
use Tangram::FlatArray; |
| 30 |
use Tangram::FlatHash; |
| 31 |
use Tangram::PerlDump; |
| 32 |
|
| 33 |
# get logger instance |
| 34 |
my $logger = Log::Dispatch::Config->instance; |
| 35 |
|
| 36 |
|
| 37 |
# ======== object constructor - %args to $self ======== |
| 38 |
sub new { |
| 39 |
my $invocant = shift; |
| 40 |
my $class = ref($invocant) || $invocant; |
| 41 |
my @args = (); |
| 42 |
@_ && (@args = @_); |
| 43 |
|
| 44 |
#my $self = { @_ }; |
| 45 |
|
| 46 |
# merge all entries from all hashes in args-array to single array (key, val, key, val) |
| 47 |
my @args_all = (); |
| 48 |
map { push(@args_all, %{$_}); } @args; |
| 49 |
# make hash from array |
| 50 |
my %args = @args_all; |
| 51 |
|
| 52 |
$logger->debug( __PACKAGE__ . "->new( @args_all )" ); |
| 53 |
|
| 54 |
my $self = { %args }; |
| 55 |
bless $self, $class; |
| 56 |
|
| 57 |
# remember as which Class we are instantiated |
| 58 |
$self->{invocant} = $invocant; |
| 59 |
|
| 60 |
$self->_checkClassTangram(); |
| 61 |
$self->_init(); |
| 62 |
|
| 63 |
return $self; |
| 64 |
} |
| 65 |
|
| 66 |
sub _checkClassTangram { |
| 67 |
my $self = shift; |
| 68 |
# check version of "Class::Tangram" |
| 69 |
my $ctversion = $Class::Tangram::VERSION; |
| 70 |
#print "ctversion: ", $ctversion, "\n"; |
| 71 |
#if ($ctversion ne 1.04) { |
| 72 |
if ($ctversion lt 1.13) { |
| 73 |
print "Version of \"Class::Tangram\": ", $ctversion, "\n"; |
| 74 |
print "minimum required version : ", "1.13", "\n"; |
| 75 |
#print "quitting!!! (please install older version (1.04) of \"Class::Tangram\"", "\n"; |
| 76 |
exit; |
| 77 |
} |
| 78 |
} |
| 79 |
|
| 80 |
sub _parsePackageNamesFromFile { |
| 81 |
my $self = shift; |
| 82 |
my $filename = shift; |
| 83 |
my $exclude_pattern = shift; |
| 84 |
$logger->debug( __PACKAGE__ . "->_parsePackageFile( ... )" ); |
| 85 |
if (!$filename) { |
| 86 |
$logger->error( __PACKAGE__ . "->_parsePackageFile: you must specify a filename" ); |
| 87 |
return; |
| 88 |
} |
| 89 |
if (! -e $filename) { |
| 90 |
$logger->error( __PACKAGE__ . "->_parsePackageFile: could not find $filename" ); |
| 91 |
} |
| 92 |
my @packages = (); |
| 93 |
open(FH, '<' . $filename); |
| 94 |
while (<FH>) { |
| 95 |
chomp(); |
| 96 |
my $good = 1; |
| 97 |
$exclude_pattern && ($good = !m/$exclude_pattern/); |
| 98 |
push @packages, $1 if m/^package (.+?);/ && $good; |
| 99 |
} |
| 100 |
close(FH); |
| 101 |
return \@packages; |
| 102 |
} |
| 103 |
|
| 104 |
sub _doinit { |
| 105 |
my $self = shift; |
| 106 |
|
| 107 |
$logger->debug( __PACKAGE__ . "->_doinit()" ); |
| 108 |
|
| 109 |
# WHAT? |
| 110 |
# imports classes to Tangram-Schema in this style, but in an abstracted way: |
| 111 |
# Class::Tangram::import_schema("SystemEvent"); |
| 112 |
# TODO: |
| 113 |
# move this code to Data::Storage::Schema::Tangram |
| 114 |
|
| 115 |
# TODO: |
| 116 |
# two cases: |
| 117 |
# 1. use a given list of strings as to-be-used-object-names |
| 118 |
# 2. parse the content of the given package and use all declared Perl Packages as objects |
| 119 |
|
| 120 |
my $classlist = $self->{EXPORT_OBJECTS}; |
| 121 |
|
| 122 |
# parse complete package to build list of classes |
| 123 |
if ($#{$classlist} == -1) { |
| 124 |
$logger->debug( "_doinit() Initializing all Classes from " . $self->{invocant} ); |
| 125 |
if (!$self->{invocant}->can('getFilename')) { |
| 126 |
$logger->error( __PACKAGE__ . "->_doinit: Package $self->{invocant} doesn't contain method 'getFilename'" ); |
| 127 |
return; |
| 128 |
} |
| 129 |
my $perl_packagefile = eval('return ' . $self->{invocant} . '::getFilename();'); |
| 130 |
my $packages = $self->_parsePackageNamesFromFile($perl_packagefile, $self->{invocant}); |
| 131 |
# TODO: |
| 132 |
# cache list so this routine isn't called on every startup/request |
| 133 |
$classlist = $packages; |
| 134 |
} |
| 135 |
|
| 136 |
# build argument to be passed to "Tangram::Schema->new(...)" |
| 137 |
my @classes; |
| 138 |
map { |
| 139 |
$logger->debug( __PACKAGE__ . "->_doinit: Initializing Class $_" ); |
| 140 |
# classname |
| 141 |
push @classes, $_; |
| 142 |
# schema |
| 143 |
my $schema; |
| 144 |
my $evalstr = '$schema = $' . $_ . '::schema;'; |
| 145 |
my $res = eval($evalstr); |
| 146 |
push @classes, $schema; |
| 147 |
} @{$classlist}; |
| 148 |
|
| 149 |
# create a new Tangram schema object |
| 150 |
# these classes must occour in the same order used at a previous setup |
| 151 |
$self->{schema} = Tangram::Schema->new({ classes => \@classes }); |
| 152 |
return 1; |
| 153 |
|
| 154 |
# ====================================== |
| 155 |
# template |
| 156 |
$self->{schema} = Tangram::Schema->new({ |
| 157 |
classes => [ |
| 158 |
|
| 159 |
# misc |
| 160 |
'SystemEvent' => $SystemEvent::schema, |
| 161 |
|
| 162 |
], |
| 163 |
}); |
| 164 |
# ====================================== |
| 165 |
|
| 166 |
|
| 167 |
} |
| 168 |
|
| 169 |
sub _init { |
| 170 |
my $self = shift; |
| 171 |
if (!$self->{schema}) { |
| 172 |
$self->_doinit(); |
| 173 |
} |
| 174 |
} |
| 175 |
|
| 176 |
# return schema |
| 177 |
sub getSchema { |
| 178 |
my $self = shift; |
| 179 |
if (!$self->{schema}) { |
| 180 |
#print "schema is not yet initialized!", "\n"; |
| 181 |
#exit; |
| 182 |
$logger->error( __PACKAGE__ . "->getSchema: Schema is not yet initialized!" ); |
| 183 |
return; |
| 184 |
} |
| 185 |
return $self->{schema}; |
| 186 |
} |
| 187 |
|
| 188 |
|
| 189 |
1; |
Parent Directory
| 
Revision Log
