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comparison Lib/IMPL/DOM/Navigator/SchemaNavigator.pm @ 24:7f00786f8210

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Первая рабочая реазизация схемы и навигаторов
author Sergey
date Mon, 05 Oct 2009 00:48:49 +0400
parents 818c74b038ae
children a8086f85a571
comparison
equal deleted inserted replaced
23:716b287d4795 24:7f00786f8210
4 4
5 use base qw(IMPL::DOM::Navigator); 5 use base qw(IMPL::DOM::Navigator);
6 use IMPL::Class::Property; 6 use IMPL::Class::Property;
7 use IMPL::Class::Property::Direct; 7 use IMPL::Class::Property::Direct;
8 8
9 require IMPL::DOM::Schema::ComplexType;
10 require IMPL::DOM::Schema::NodeSet;
11 require IMPL::DOM::Schema::AnyNode;
12
9 __PACKAGE__->PassThroughArgs; 13 __PACKAGE__->PassThroughArgs;
10 14
11 BEGIN { 15 BEGIN {
12 public _direct property Schema => prop_get; 16 public _direct property Schema => prop_get;
17 private _direct property _historySteps => prop_all;
13 } 18 }
14 19
15 sub CTOR { 20 sub CTOR {
16 my ($this,$schema) = @_; 21 my ($this,$schema) = @_;
17 22
18 $this->{$Schema} = $schema; 23 $this->{$Schema} = $schema;
19 24
20 die new IMPL::InvalidArgumentException("A schema object is required") unless $schema->isa('IMPL::DOM::Schema'); 25 die new IMPL::InvalidArgumentException("A schema object is required") unless $schema->isa('IMPL::DOM::Schema');
21 } 26 }
22 27
23 sub Navigate { 28 my $schemaAnyNode = IMPL::DOM::Schema::ComplexType->new(type => '::AnyNodeType', nativeType => 'IMPL::DOM::ComplexNode')->appendRange(
24 my ($this,$query) = @_; 29 IMPL::DOM::Schema::NodeSet->new()->appendRange(
30 IMPL::DOM::Schema::AnyNode->new()
31 )
32 );
33
34 sub NavigateName {
35 my ($this,$name) = @_;
25 36
26 if (my ($newNode) = $this->Current->selectNodes($query)) { 37 # perform a safe navigation
27 if (ref $newNode eq 'IMPL::DOM::Schema::Node') { 38 return dosafe $this sub {
28 $newNode = $this->{$Schema}->ResolveType($newNode->type) || $newNode; 39 my $steps = 1;
40 # navigate to node
41 if (
42 my $node = $this->Navigate( sub {
43 $_->isa('IMPL::DOM::Schema::Node') and (
44 $_->name eq $name
45 or
46 $_->nodeName eq 'AnyNode'
47 or
48 ( $_->nodeName eq 'SwitchNode' and $_->selectNodes( sub { $_->name eq $name } ) )
49 )
50 })
51 ) {
52 if ($node->nodeName eq 'AnyNode') {
53 # if we navigate to the anynode
54 # assume it to be ComplexType by default
55 $node = $node->type ? $this->{$Schema}->resolveType($node->type) : $schemaAnyNode;
56 } elsif ($node->nodeName eq 'SwitchNode') {
57 # if we are in the switchnode
58 # navigate to the target node
59 $node = $this->Navigate(sub { $_->name eq $name });
60 $steps ++;
61 }
62
63 if ($node->nodeName eq 'Node') {
64 # if we navigate to a reference
65 # resolve it
66 $node = $this->{$Schema}->resolveType($node->type);
67 $this->internalNavigateNodeSet($node);
68 $steps++;
69 }
70
71 # if target node is a complex node
72 if ($node->isa('IMPL::DOM::Schema::ComplexNode')) {
73 # navigate to it's content
74 $this->internalNavigateNodeSet($node->content);
75 $steps ++;
76 }
77
78 push @{$this->{$_historySteps}},$steps;
79
80 # return found node schema
81 return $node;
82 } else {
83 die; # abort navigation
29 } 84 }
30 return $this->_NavigateNode($newNode);
31 } else {
32 return undef;
33 } 85 }
86 }
87
88 sub SchemaBack {
89 my ($this) = @_;
90
91 $this->Back(pop @{$this->{$_historySteps}}) if $this->{$_historySteps};
34 } 92 }
35 93
36 1; 94 1;
37 __END__ 95 __END__
38 96
39 =pod 97 =pod
40 98
41 =head1 DESCRIPTION 99 =head1 DESCRIPTION
42 100
43 , , <Node nodeName="SomeName" type="ReferencedType"/>. 101 ,
44 . 102 .
103
104 =head1 METHODS
105
106 =over
107
108 =item C<< $navi->NavigateName($name) >>
109
110 . C<name>
111
112 =item C<< $navi->SchemaBack >>
113
114 C<NavigateName>.
115
116 .
117
118 =back
45 119
46 =cut 120 =cut