WAIT/Query/Base.pm

#                              -*- Mode: Cperl -*- 
# 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: Fri Apr 14 16:27:01 2000
# Language        : CPerl
# Update Count    : 57
# 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(
                     { attr => $fld,
                       cont => $self->{Plain}->{$fld},
                       raw  => $self->{Raw}->{$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	13	# -- Mode: Cperl --
2	ulpfr	10	# 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	ulpfr	19	# Last Modified On: Fri Apr 14 16:27:01 2000
8	ulpfr	10	# Language : CPerl
9	ulpfr	19	# Update Count : 57
10	ulpfr	10	# Status : Unknown, Use with caution!
11	ulpfr	13	#
12	ulpfr	10	# Copyright (c) 1996-1997, Ulrich Pfeifer
13	ulpfr	13	#
14	ulpfr	10
15			package WAIT::Query::Base;
16
17			sub new {
18			my $type = shift;
19			my $table = shift;
20			my $self = {Table => $table};
21	ulpfr	13
22	ulpfr	10	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	ulpfr	13
76	ulpfr	10	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	ulpfr	13
93	ulpfr	10	for $fld (keys %{$self->{Plain}}, keys %{$self->{Raw}}) {
94	ulpfr	19	%r = $tb->search(
95			{ attr => $fld,
96			cont => $self->{Plain}->{$fld},
97			raw => $self->{Raw}->{$fld},
98			@_
99			}
100	ulpfr	10	);
101			my ($key, $val);
102			while (($key, $val) = each %r) {
103			if (exists $result{$key}) {
104			$result{$key} += $val;
105			} else {
106			$result{$key} = $val;
107			}
108			}
109			}
110			%result;
111			}
112
113			sub hilight {
114			my $self = shift;
115			$self->{Table}->hilight($_[0], $self->{Plain}, $self->{Raw})
116			}
117
118			sub flatten {
119			my $self = shift;
120			#print STDERR "WAIT::Query::Base::flatten($self)\n";
121			$self->clone()
122			}
123
124			package WAIT::Query::bin;
125
126			sub new {
127			my $type = shift;
128			my $self = [@_];
129
130			#print STDERR "WAIT::Query::bin::new $type $self\n";
131			bless $self, ref($type) \|\| $type;
132			}
133
134			sub flatten {
135			my $self = shift;
136			#print STDERR "WAIT::Query::bin::flatten($self)\n";
137			$self->[0]->flatten->merge($self->[1]->flatten)
138			}
139
140			sub hilight {
141			my $self = shift;
142			my $query = $self->flatten();
143
144			$query->hilight(@_);
145			}
146
147			package WAIT::Query::and;
148
149			@ISA = qw(WAIT::Query::bin);
150
151			sub execute {
152			my $self = shift;
153			my %ra = $self->[0]->execute();
154			my %rb = $self->[1]->execute();
155
156			#print STDERR "WAIT::Query::and::execute\n";
157			for (keys %ra) {
158			if (exists $rb{$_}) {
159			$ra{$_} *= $rb{$_};
160			delete $ra{$_} if $ra{$_} <= 0;
161			} else {
162			delete $ra{$_};
163			}
164			}
165			%ra;
166			}
167
168
169			sub merge {
170			#print STDERR "WAIT::Query::and::merge(@_)\n";
171			new WAIT::Query::or @_; # XXX
172			}
173
174			package WAIT::Query::or;
175
176			@ISA = qw(WAIT::Query::bin);
177
178			sub execute {
179			my $self = shift;
180			my %ra = $self->[0]->execute();
181			my %rb = $self->[1]->execute();
182
183			for (keys %ra) {
184			if (exists $rb{$_}) {
185			$ra{$_} += $rb{$_}
186			}
187			}
188			for (keys %rb) {
189			unless (exists $ra{$_}) {
190			$ra{$_} = $rb{$_}
191			}
192			}
193			%ra;
194			}
195
196
197			sub merge {
198			my $self = shift;
199
200			if (ref($_[0]) eq 'WAIT::Query::Base') {
201			$self->[0] = $self->[0]->merge($_[0]);
202			} else {
203			new WAIT::Query::or $self, @_; # XXX
204			}
205			}
206
207			package WAIT::Query::not;
208
209			@ISA = qw(WAIT::Query::and WAIT::Query::bin);
210
211			sub execute {
212			my $self = shift;
213			my %ra = $self->[0]->execute();
214			my %rb = $self->[1]->execute();
215
216			for (keys %ra) {
217			if (exists $rb{$_}) {
218			if (exists $ra{$_}) {
219			$ra{$_} -= $rb{$_};
220			delete $ra{$_} if $ra{$_} <= 0;
221			}
222			}
223			}
224
225			%ra;
226			}
227
228			package WAIT::Query::Raw;
229			use strict;
230			use Carp;
231
232			sub new {
233			my $type = shift;
234			my $self = shift;
235
236			$self = {} unless defined $self;
237			bless $self, ref($type) \|\| $type;
238			}
239
240			sub clone {
241			my $self = shift;
242			my %copy;
243
244			for (keys %$self) {
245			$copy{$_} = [@{$self->{$_}}];
246			}
247			$self->new(\%copy);
248			}
249
250			# Modifies first argument
251			sub merge {
252			my $self = shift;
253			my $other = shift;
254
255			croak "$other is not at 'WAIT::Query'" unless ref($other) =~ /^WAIT::Query/;
256			for (keys %$other) {
257			if (exists $self->{$_}) {
258			push @{$self->{$_}}, @{$other->{$_}}
259			} else {
260			$self->{$_} = $other->{$_};
261			}
262			}
263			}
264
265			1;