/[cvs]/nfo/perl/libs/Data/Storage/Handler/Abstract.pm
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revision 1.7 by joko, Thu Dec 5 07:57:48 2002 UTC revision 1.11 by joko, Mon Jan 20 16:43:18 2003 UTC
# Line 1  Line 1 
1  ##    --------------------------------------------------------------------------------  ##    ------------------------------------------------------------------------
2  ##    $Id$  ##    $Id$
3  ##    --------------------------------------------------------------------------------  ##    ------------------------------------------------------------------------
4  ##    $Log$  ##    $Log$
5    ##    Revision 1.11  2003/01/20 16:43:18  joko
6    ##    + better argument-property merging
7    ##    + debugging-output !!!
8    ##    + abstract-dummy 'sub createChildNode'
9    ##
10    ##    Revision 1.10  2003/01/19 02:31:51  joko
11    ##    + fix to 'sub AUTOLOAD'
12    ##
13    ##    Revision 1.9  2002/12/19 16:30:23  joko
14    ##    + added 'sub dropDb' and 'sub rebuildDb' as croakers for concrete implementations of methods in proper handlers
15    ##
16    ##    Revision 1.8  2002/12/13 21:48:35  joko
17    ##    + sub _abstract_function
18    ##
19  ##    Revision 1.7  2002/12/05 07:57:48  joko  ##    Revision 1.7  2002/12/05 07:57:48  joko
20  ##    + now using Tie::SecureHash as a base for the COREHANDLE  ##    + now using Tie::SecureHash as a base for the COREHANDLE
21  ##    + former public COREHANDLE becomes private _COREHANDLE now  ##    + former public COREHANDLE becomes private _COREHANDLE now
# Line 24  Line 38 
38  ##  ##
39  ##    Revision 1.1  2002/10/10 03:44:07  cvsjoko  ##    Revision 1.1  2002/10/10 03:44:07  cvsjoko
40  ##    + new  ##    + new
41  ##    --------------------------------------------------------------------------------  ##    ------------------------------------------------------------------------
42    
43    
44  package Data::Storage::Handler::Abstract;  package Data::Storage::Handler::Abstract;
# Line 32  package Data::Storage::Handler::Abstract Line 46  package Data::Storage::Handler::Abstract
46  use strict;  use strict;
47  use warnings;  use warnings;
48    
49    use base qw( DesignPattern::Object );
50    
51    
52  use Data::Dumper;  use Data::Dumper;
53  use Tie::SecureHash;  use Tie::SecureHash;
54  #use Data::Storage::Handler;  #use Data::Storage::Handler;
55    use Data::Transform::Deep qw( merge );
56    
57    
58  # get logger instance  # get logger instance
59  my $logger = Log::Dispatch::Config->instance;  my $logger = Log::Dispatch::Config->instance;
# Line 57  sub new { Line 76  sub new {
76    bless $self, $class;    bless $self, $class;
77  =cut  =cut
78    
79    #=pod
80    # V2 - maybe more convenient/secure? utilizing Damian Conway's Tie::SecureHash...    # V2 - maybe more convenient/secure? utilizing Damian Conway's Tie::SecureHash...
81    my $self = Tie::SecureHash->new(    my $self = Tie::SecureHash->new(
82      $class,      $class,
# Line 81  sub new { Line 100  sub new {
100        #_protected => ,        #_protected => ,
101        #__private => ,        #__private => ,
102    );    );
103    #=cut
104    
105    # merge passed-in arguments to constructor as properties into already blessed secure object    # merge passed-in arguments to constructor as properties into already blessed secure object
106        
107      # mungle arguments from array into hash - perl does the job  ;)      # mungle arguments from array into hash - perl does the job  ;)
108      my %args = @_;      #my %args = @_;
109          #my %args = ();
110    
111    #print Dumper(@_);
112    
113      # merge attributes one-by-one      # merge attributes one-by-one
114      # TODO: deep_copy? / merge_deep?      # TODO: deep_copy? / merge_deep?
115      foreach (keys %args) {      while (my $elemName = shift @_) {
116        #print "key: $_", "\n";        #print "elemName: $elemName", "\n";
117        $self->{$_} = $args{$_};        if (my $elemValue = shift @_) {
118            #print Dumper($elemValue);
119            #print "elemName=$elemName, elemValue=$elemValue", "\n";
120            $self->{$elemName} = $elemValue;
121          }
122          #$self->{$_} = $args{$_};
123          #$self->{$_} = $args{$_};
124      }      }
125        
126    # V3 - rolling our own security (just for {COREHANDLE} - nothing else)  -  nope, Tie::SecureHash works wonderful    # V3 - rolling our own security (just for {COREHANDLE} - nothing else)  -  nope, Tie::SecureHash works wonderful
# Line 116  sub new { Line 144  sub new {
144  }  }
145    
146    
147    # TODO: use NEXT.pm inside this mechanism (to avoid repetitions...)
148  sub AUTOLOAD {  sub AUTOLOAD {
149    
150    # recursion problem to be avoided here!!!    # recursion problem to be avoided here!!!
# Line 146  sub AUTOLOAD { Line 175  sub AUTOLOAD {
175    # this is to prevent deep recursion's    # this is to prevent deep recursion's
176    return if lc $methodname eq 'exists';    return if lc $methodname eq 'exists';
177    
178  #print "$methodname - 1", "\n";  print "$methodname - 1", "\n";
179    
180    # TODO: enhance logging/debugging    # TODO: enhance logging/debugging
181    #if (!$self->exists('COREHANDLE')) { return; }    #if (!$self->exists('COREHANDLE')) { return; }
182    
183    # handle locking (hack)    # handle locking (hack)
184    if ($self->exists('lock_info') && $self->{lock_info}->{last_method} && $methodname eq $self->{lock_info}->{last_method}) {    if ($self->can('exists') && $self->exists('lock_info') && $self->{lock_info}->{last_method} && $methodname eq $self->{lock_info}->{last_method}) {
185      $self->{lock_info}->{log_lock} = 1;      $self->{lock_info}->{log_lock} = 1;
186    } else {    } else {
187      $self->{lock_info}->{log_lock} = 0;      $self->{lock_info}->{log_lock} = 0;
188    }    }
189    $self->{lock_info}->{last_method} = $methodname;    $self->{lock_info}->{last_method} = $methodname;
190        
191  #print "$methodname - 2", "\n";  print "$methodname - 2", "\n";
192    
193  #print Dumper($self);  #print Dumper($self);
194  #exit;  #exit;
# Line 173  sub AUTOLOAD { Line 202  sub AUTOLOAD {
202    #if (!$self->exists('_COREHANDLE')) {    #if (!$self->exists('_COREHANDLE')) {
203    #if (!$self->{_COREHANDLE}) {    #if (!$self->{_COREHANDLE}) {
204    if (!$core) {    if (!$core) {
205      my $err_msg_core = __PACKAGE__ . "[$self->{metainfo}->{type}]" . ": " . "COREHANDLE is undefined while trying to execute method \"$methodname\"";  
206    #print Dumper($self);    
207    #exit;
208    
209        my $handlertype = $self->{metainfo}->{type};
210        $handlertype ||= '';
211    
212        my $err_msg_core = __PACKAGE__ . "[$handlertype]" . ": " . "COREHANDLE is undefined while trying to execute method \"$methodname\"";
213  print $err_msg_core, "\n";  print $err_msg_core, "\n";
214      if ($self->exists('lock_info') && !$self->{lock_info}->{log_lock}) {      if ($self->exists('lock_info') && !$self->{lock_info}->{log_lock}) {
215        $logger->error( $err_msg_core );        $logger->error( $err_msg_core );
# Line 219  print $err_msg_core, "\n"; Line 255  print $err_msg_core, "\n";
255            
256  #print "calling: $methodname", "\n";  #print "calling: $methodname", "\n";
257            
258      # method calls doing it until here will get dispatched to the proper handler      # method calls making it until here will get dispatched to the proper handler
259      return $core->$methodname(@_);      return $core->$methodname(@_);
260        
261    } elsif ($self->can($methodname)) {    } elsif ($self->can($methodname)) {
262        # try to call specified method inside our or inherited module(s) scope(s)
263      return $self->$methodname(@_);      return $self->$methodname(@_);
264    }    }
265    
# Line 244  sub DESTROY { Line 281  sub DESTROY {
281    }    }
282  }  }
283    
   
 sub _abstract_function {  
   my $self = shift;  
   my $fName = shift;  
   my $class = ref($self);  
   # was:  
   # $logger->error( __PACKAGE__ . ": function \"$fName\" is an abstract method, please implement it in \"$class\"");  
   # is:  
   die( __PACKAGE__ . ": function \"$fName\" is an abstract method, please implement it in \"$class\"");  
   #exit;  
 }  
   
284  sub _typeCheck2 {  sub _typeCheck2 {
285    my $type = shift;    my $type = shift;
286    print "type: $type";    print "type: $type";
# Line 271  sub _typeCheck2 { Line 296  sub _typeCheck2 {
296      my $self = shift;      my $self = shift;
297      my $nodename = shift;      my $nodename = shift;
298      #$nodename = 'TransactionRoutingTable';      #$nodename = 'TransactionRoutingTable';
299      $logger->debug( __PACKAGE__ . "->getChildNode( nodename $nodename )" );      $logger->debug( __PACKAGE__ . "->existsChildNode( nodename $nodename )" );
300      $self->getChildNodes() unless $self->{meta}->{childnodes};      $self->getChildNodes() unless $self->{meta}->{childnodes};
301      my $result = grep(m/$nodename/i, @{$self->{meta}->{childnodes}});     # TODO: use "/i" only on win32-systems!      my $result = grep(m/$nodename/i, @{$self->{meta}->{childnodes}});     # TODO: use "/i" only on win32-systems!
302      return $result;      return $result;
# Line 308  sub _typeCheck2 { Line 333  sub _typeCheck2 {
333      $self->_abstract_function('sendCommand');      $self->_abstract_function('sendCommand');
334    }    }
335    
336      sub createChildNode {
337        my $self = shift;
338        $self->_abstract_function('createChildNode');
339      }
340    
341    sub existsChildNode_tmp {    sub existsChildNode_tmp {
342      my $self = shift;      my $self = shift;
343      $self->_abstract_function('existsChildNode');      $self->_abstract_function('existsChildNode');
# Line 377  sub _typeCheck2 { Line 407  sub _typeCheck2 {
407      return;      return;
408    }    }
409    
410      sub dropDb {
411        my $self = shift;
412        $self->_abstract_function('dropDb');
413        return;
414      }
415    
416      sub rebuildDb {
417        my $self = shift;
418        $self->_abstract_function('rebuildDb');
419        return;
420      }
421    
422  1;  1;
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