WAIT/Query/Base.pm

#                              -*- Mode: Perl -*- 
# Query.pm -- 
# ITIID           : $ITI$ $Header $__Header$
# Author          : Ulrich Pfeifer
# Created On      : Fri Sep 13 13:05:52 1996
# Last Modified By: Ulrich Pfeifer
# Last Modified On: Sun Nov 22 18:44:40 1998
# Language        : CPerl
# Update Count    : 55
# Status          : Unknown, Use with caution!
# 
# Copyright (c) 1996-1997, Ulrich Pfeifer
# 

package WAIT::Query::Base;

sub new {
  my $type  = shift;
  my $table = shift;
  my $self  = {Table => $table};
  
  bless $self, ref($type) || $type;
  if (@_) {
    $self->add(@_);
  } else {
    $self;
  }
}

sub add {
  my ($self, $fldorref, %parm) = @_;
  my @fld = (ref $fldorref)?@$fldorref:$fldorref;
  my $fld;

  for $fld (@fld) {
    if (defined $parm{Plain}) {
      if (defined $self->{Plain}->{$fld}) {
        $self->{Plain}->{$fld} .= ' ' . $parm{Plain};
      } else {
        $self->{Plain}->{$fld}  =       $parm{Plain};
      }
    }
    if (defined $parm{Raw}) {
      if (defined $self->{Raw}->{$fld}) {
        $self->{Raw}->{$fld}->merge($parm{Raw});
      } else {
        $self->{Raw}->{$fld} =      $parm{Raw};
      }
    }
  }
  $self;
}

sub merge {
  my ($self, $other) = @_;
  my $fld;

  if (ref($self) ne ref($other)) {
    return $other->merge($self);
  }
  for $fld (keys %{$other->{Plain}}) {
    $self->add($fld, Plain => $other->{Plain}->{$fld});
  }
  for $fld (keys %{$other->{Raw}}) {
    $self->add($fld, Raw => $other->{Raw}->{$fld});
  }

  $self;
}

sub clone {
  my $self = shift;
  my %copy;
  my $fld;
  
  for $fld (keys %{$self->{Plain}}) {
    $copy{Plain}->{$fld} = $self->{Plain}->{$fld};
  }
  for $fld (keys %{$self->{Raw}}) {
    next unless defined $self->{Raw}->{$fld}; # XXX bug elsewere
    $copy{Raw}->{$fld} = $self->{Raw}->{$fld}->clone;
  }

  $self;
}

sub execute {
  my $self = shift;
  my $tb   = $self->{Table};
  my %result;
  my $fld;
  
  for $fld (keys %{$self->{Plain}}, keys %{$self->{Raw}}) {
    %r = $tb->search($fld,
                     $self->{Plain}->{$fld},
                     $self->{Raw}->{$fld},
                    );
    my ($key, $val);
    while (($key, $val) = each %r) {
      if (exists $result{$key}) {
        $result{$key} += $val;
      } else {
        $result{$key}  = $val;
      }
    }
  }
  %result;
}

sub hilight {
  my $self = shift;
  $self->{Table}->hilight($_[0], $self->{Plain}, $self->{Raw})
}

sub flatten {
  my $self = shift;
  #print STDERR "WAIT::Query::Base::flatten($self)\n";
  $self->clone()
}

package WAIT::Query::bin;

sub new {
  my $type = shift;
  my $self = [@_];

  #print STDERR "WAIT::Query::bin::new $type $self\n";
  bless $self, ref($type) || $type;
}

sub flatten {
  my $self = shift;
  #print STDERR "WAIT::Query::bin::flatten($self)\n";
  $self->[0]->flatten->merge($self->[1]->flatten)
}

sub hilight {
  my $self  = shift;
  my $query = $self->flatten();

  $query->hilight(@_);
}

package WAIT::Query::and;

@ISA = qw(WAIT::Query::bin);

sub execute {
  my $self = shift;
  my %ra = $self->[0]->execute();
  my %rb = $self->[1]->execute();

  #print STDERR "WAIT::Query::and::execute\n";
  for (keys %ra) {
    if (exists $rb{$_}) {
      $ra{$_} *= $rb{$_};
      delete $ra{$_} if $ra{$_} <= 0;
    } else {
      delete $ra{$_};
    }
  }
  %ra;
}


sub merge {
  #print STDERR "WAIT::Query::and::merge(@_)\n";
  new WAIT::Query::or @_;        # XXX
}

package WAIT::Query::or;

@ISA = qw(WAIT::Query::bin);

sub execute {
  my $self = shift;
  my %ra = $self->[0]->execute();
  my %rb = $self->[1]->execute();

  for (keys %ra) {
    if (exists $rb{$_}) {
      $ra{$_} += $rb{$_}
    }
  }
  for (keys %rb) {
    unless (exists $ra{$_}) {
      $ra{$_} = $rb{$_}
    }
  }
  %ra;
}


sub merge {
  my $self = shift;

  if (ref($_[0]) eq 'WAIT::Query::Base') {
    $self->[0] = $self->[0]->merge($_[0]);
  } else {
    new WAIT::Query::or $self, @_;        # XXX
  }
}

package WAIT::Query::not;

@ISA = qw(WAIT::Query::and WAIT::Query::bin);

sub execute {
  my $self = shift;
  my %ra = $self->[0]->execute();
  my %rb = $self->[1]->execute();

  for (keys %ra) {
    if (exists $rb{$_}) {
      if (exists $ra{$_}) {
        $ra{$_} -= $rb{$_};
        delete $ra{$_} if $ra{$_} <= 0;
      }
    }
  }

  %ra;
}

package WAIT::Query::Raw;
use strict;
use Carp;

sub new {
  my $type = shift;
  my $self = shift;

  $self = {} unless defined $self;
  bless $self, ref($type) || $type;
}

sub clone {
  my $self = shift;
  my %copy;

  for (keys %$self) {
    $copy{$_} = [@{$self->{$_}}];
  }
  $self->new(\%copy);
}

# Modifies first argument
sub merge {
  my $self  = shift;
  my $other = shift;

  croak "$other is not at 'WAIT::Query'" unless ref($other) =~ /^WAIT::Query/;
  for (keys %$other) {
    if (exists $self->{$_}) {
      push @{$self->{$_}}, @{$other->{$_}}
    } else {
      $self->{$_} = $other->{$_};
    }
  }
}

1;
1	ulpfr	10	# -- Mode: Perl --
2			# Query.pm --
3			# ITIID : $ITI$ $Header $__Header$
4			# Author : Ulrich Pfeifer
5			# Created On : Fri Sep 13 13:05:52 1996
6			# Last Modified By: Ulrich Pfeifer
7			# Last Modified On: Sun Nov 22 18:44:40 1998
8			# Language : CPerl
9			# Update Count : 55
10			# Status : Unknown, Use with caution!
11			#
12			# Copyright (c) 1996-1997, Ulrich Pfeifer
13			#
14
15			package WAIT::Query::Base;
16
17			sub new {
18			my $type = shift;
19			my $table = shift;
20			my $self = {Table => $table};
21
22			bless $self, ref($type) \|\| $type;
23			if (@_) {
24			$self->add(@_);
25			} else {
26			$self;
27			}
28			}
29
30			sub add {
31			my ($self, $fldorref, %parm) = @_;
32			my @fld = (ref $fldorref)?@$fldorref:$fldorref;
33			my $fld;
34
35			for $fld (@fld) {
36			if (defined $parm{Plain}) {
37			if (defined $self->{Plain}->{$fld}) {
38			$self->{Plain}->{$fld} .= ' ' . $parm{Plain};
39			} else {
40			$self->{Plain}->{$fld} = $parm{Plain};
41			}
42			}
43			if (defined $parm{Raw}) {
44			if (defined $self->{Raw}->{$fld}) {
45			$self->{Raw}->{$fld}->merge($parm{Raw});
46			} else {
47			$self->{Raw}->{$fld} = $parm{Raw};
48			}
49			}
50			}
51			$self;
52			}
53
54			sub merge {
55			my ($self, $other) = @_;
56			my $fld;
57
58			if (ref($self) ne ref($other)) {
59			return $other->merge($self);
60			}
61			for $fld (keys %{$other->{Plain}}) {
62			$self->add($fld, Plain => $other->{Plain}->{$fld});
63			}
64			for $fld (keys %{$other->{Raw}}) {
65			$self->add($fld, Raw => $other->{Raw}->{$fld});
66			}
67
68			$self;
69			}
70
71			sub clone {
72			my $self = shift;
73			my %copy;
74			my $fld;
75
76			for $fld (keys %{$self->{Plain}}) {
77			$copy{Plain}->{$fld} = $self->{Plain}->{$fld};
78			}
79			for $fld (keys %{$self->{Raw}}) {
80			next unless defined $self->{Raw}->{$fld}; # XXX bug elsewere
81			$copy{Raw}->{$fld} = $self->{Raw}->{$fld}->clone;
82			}
83
84			$self;
85			}
86
87			sub execute {
88			my $self = shift;
89			my $tb = $self->{Table};
90			my %result;
91			my $fld;
92
93			for $fld (keys %{$self->{Plain}}, keys %{$self->{Raw}}) {
94			%r = $tb->search($fld,
95			$self->{Plain}->{$fld},
96			$self->{Raw}->{$fld},
97			);
98			my ($key, $val);
99			while (($key, $val) = each %r) {
100			if (exists $result{$key}) {
101			$result{$key} += $val;
102			} else {
103			$result{$key} = $val;
104			}
105			}
106			}
107			%result;
108			}
109
110			sub hilight {
111			my $self = shift;
112			$self->{Table}->hilight($_[0], $self->{Plain}, $self->{Raw})
113			}
114
115			sub flatten {
116			my $self = shift;
117			#print STDERR "WAIT::Query::Base::flatten($self)\n";
118			$self->clone()
119			}
120
121			package WAIT::Query::bin;
122
123			sub new {
124			my $type = shift;
125			my $self = [@_];
126
127			#print STDERR "WAIT::Query::bin::new $type $self\n";
128			bless $self, ref($type) \|\| $type;
129			}
130
131			sub flatten {
132			my $self = shift;
133			#print STDERR "WAIT::Query::bin::flatten($self)\n";
134			$self->[0]->flatten->merge($self->[1]->flatten)
135			}
136
137			sub hilight {
138			my $self = shift;
139			my $query = $self->flatten();
140
141			$query->hilight(@_);
142			}
143
144			package WAIT::Query::and;
145
146			@ISA = qw(WAIT::Query::bin);
147
148			sub execute {
149			my $self = shift;
150			my %ra = $self->[0]->execute();
151			my %rb = $self->[1]->execute();
152
153			#print STDERR "WAIT::Query::and::execute\n";
154			for (keys %ra) {
155			if (exists $rb{$_}) {
156			$ra{$_} *= $rb{$_};
157			delete $ra{$_} if $ra{$_} <= 0;
158			} else {
159			delete $ra{$_};
160			}
161			}
162			%ra;
163			}
164
165
166			sub merge {
167			#print STDERR "WAIT::Query::and::merge(@_)\n";
168			new WAIT::Query::or @_; # XXX
169			}
170
171			package WAIT::Query::or;
172
173			@ISA = qw(WAIT::Query::bin);
174
175			sub execute {
176			my $self = shift;
177			my %ra = $self->[0]->execute();
178			my %rb = $self->[1]->execute();
179
180			for (keys %ra) {
181			if (exists $rb{$_}) {
182			$ra{$_} += $rb{$_}
183			}
184			}
185			for (keys %rb) {
186			unless (exists $ra{$_}) {
187			$ra{$_} = $rb{$_}
188			}
189			}
190			%ra;
191			}
192
193
194			sub merge {
195			my $self = shift;
196
197			if (ref($_[0]) eq 'WAIT::Query::Base') {
198			$self->[0] = $self->[0]->merge($_[0]);
199			} else {
200			new WAIT::Query::or $self, @_; # XXX
201			}
202			}
203
204			package WAIT::Query::not;
205
206			@ISA = qw(WAIT::Query::and WAIT::Query::bin);
207
208			sub execute {
209			my $self = shift;
210			my %ra = $self->[0]->execute();
211			my %rb = $self->[1]->execute();
212
213			for (keys %ra) {
214			if (exists $rb{$_}) {
215			if (exists $ra{$_}) {
216			$ra{$_} -= $rb{$_};
217			delete $ra{$_} if $ra{$_} <= 0;
218			}
219			}
220			}
221
222			%ra;
223			}
224
225			package WAIT::Query::Raw;
226			use strict;
227			use Carp;
228
229			sub new {
230			my $type = shift;
231			my $self = shift;
232
233			$self = {} unless defined $self;
234			bless $self, ref($type) \|\| $type;
235			}
236
237			sub clone {
238			my $self = shift;
239			my %copy;
240
241			for (keys %$self) {
242			$copy{$_} = [@{$self->{$_}}];
243			}
244			$self->new(\%copy);
245			}
246
247			# Modifies first argument
248			sub merge {
249			my $self = shift;
250			my $other = shift;
251
252			croak "$other is not at 'WAIT::Query'" unless ref($other) =~ /^WAIT::Query/;
253			for (keys %$other) {
254			if (exists $self->{$_}) {
255			push @{$self->{$_}}, @{$other->{$_}}
256			} else {
257			$self->{$_} = $other->{$_};
258			}
259			}
260			}
261
262			1;