Mercurial > pub > Impl
annotate Lib/IMPL/DOM/Navigator/SchemaNavigator.pm @ 250:129e48bb5afb
DOM refactoring
ObjectToDOM methods are virtual
QueryToDOM uses inflators
Fixed transform for the complex values in the ObjectToDOM
QueryToDOM doesn't allow to use complex values (HASHes) as values for nodes (overpost problem)
| author | sergey |
|---|---|
| date | Wed, 07 Nov 2012 04:17:53 +0400 |
| parents | 2746a8e5a6c4 |
| children | 4ddb27ff4a0b |
| rev | line source |
|---|---|
| 49 | 1 package IMPL::DOM::Navigator::SchemaNavigator; |
| 2 use strict; | |
| 3 use warnings; | |
| 4 | |
| 5 use IMPL::Class::Property; | |
| 6 use IMPL::Class::Property::Direct; | |
| 7 | |
| 8 require IMPL::DOM::Schema::ComplexType; | |
| 9 require IMPL::DOM::Schema::NodeSet; | |
| 10 require IMPL::DOM::Schema::AnyNode; | |
| 11 | |
| 246 | 12 use IMPL::declare { |
| 13 base => [ | |
| 14 'IMPL::DOM::Navigator' => '@_' | |
| 15 ] | |
| 16 }; | |
| 49 | 17 |
| 18 BEGIN { | |
| 19 public _direct property Schema => prop_get; | |
| 20 private _direct property _historySteps => prop_all; | |
| 21 } | |
| 22 | |
| 23 sub CTOR { | |
| 24 my ($this,$schema) = @_; | |
| 25 | |
| 246 | 26 $this->{$Schema} = $schema->isa('IMPL::DOM::Schema::ComplexNode') ? $schema->document : $schema; |
| 49 | 27 |
| 246 | 28 die new IMPL::InvalidArgumentException("A schema object is required") unless ref $this->{$Schema} && eval { $this->{$Schema}->isa('IMPL::DOM::Schema') }; |
| 49 | 29 } |
| 30 | |
| 31 my $schemaAnyNode = IMPL::DOM::Schema::ComplexType->new(type => '::AnyNodeType', nativeType => 'IMPL::DOM::ComplexNode')->appendRange( | |
| 32 IMPL::DOM::Schema::NodeSet->new()->appendRange( | |
| 33 IMPL::DOM::Schema::AnyNode->new() | |
| 34 ) | |
| 35 ); | |
| 36 | |
| 37 sub NavigateName { | |
| 38 my ($this,$name) = @_; | |
| 39 | |
| 40 die new IMPL::InvalidArgumentException('name is required') unless defined $name; | |
| 41 | |
| 42 # perform a safe navigation | |
| 43 #return dosafe $this sub { | |
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44 my $steps = 0; |
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45 # if we are currently in a ComplexNode, first go to it's content |
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46 if ($this->Current->isa('IMPL::DOM::Schema::ComplexNode')) { |
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47 # navigate to it's content |
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48 # ComplexNode |
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49 $this->internalNavigateNodeSet($this->Current->content); |
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50 $steps ++; |
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51 } |
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52 |
| 49 | 53 # navigate to node |
| 54 if ( | |
| 55 my $node = $this->Navigate( sub { | |
| 56 $_->isa('IMPL::DOM::Schema::Node') and ( | |
| 57 $_->name eq $name | |
| 58 or | |
| 59 $_->nodeName eq 'AnyNode' | |
| 60 or | |
| 61 ( $_->nodeName eq 'SwitchNode' and $_->selectNodes( sub { $_->name eq $name } ) ) | |
| 62 ) | |
| 63 }) | |
| 64 ) { | |
| 194 | 65 $steps ++; |
| 49 | 66 if ($node->nodeName eq 'AnyNode') { |
| 67 # if we navigate to the anynode | |
| 68 # assume it to be ComplexType by default | |
| 69 $node = $node->type ? $this->{$Schema}->resolveType($node->type) : $schemaAnyNode; | |
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70 $this->internalNavigateNodeSet($node); |
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71 $steps ++; |
| 49 | 72 } elsif ($node->nodeName eq 'SwitchNode') { |
| 73 # if we are in the switchnode | |
| 74 # navigate to the target node | |
| 75 $node = $this->Navigate(sub { $_->name eq $name }); | |
| 76 $steps ++; | |
| 77 } | |
| 78 | |
| 79 if ($node->nodeName eq 'Node') { | |
| 80 # if we navigate to a reference | |
| 81 # resolve it | |
| 82 $node = $this->{$Schema}->resolveType($node->type); | |
| 83 $this->internalNavigateNodeSet($node); | |
| 84 $steps++; | |
| 85 } | |
| 86 | |
| 87 push @{$this->{$_historySteps}},$steps; | |
| 88 | |
| 89 # return found node schema | |
| 90 return $node; | |
| 91 } else { | |
| 230 | 92 return; # abort navigation |
| 49 | 93 } |
| 94 #} | |
| 95 } | |
| 96 | |
| 97 sub SchemaBack { | |
| 98 my ($this) = @_; | |
| 99 | |
| 100 $this->Back(pop @{$this->{$_historySteps}}) if $this->{$_historySteps}; | |
| 101 } | |
| 102 | |
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103 sub SourceSchemaNode { |
| 194 | 104 my ($this) = @_; |
| 105 | |
| 106 if ($this->Current->isa('IMPL::DOM::Schema::SimpleType') or | |
| 107 $this->Current->isa('IMPL::DOM::Schema::ComplexType') | |
| 108 ) { | |
| 230 | 109 # we are redirected |
| 194 | 110 return $this->GetNodeFromHistory(-1); |
| 111 } else { | |
| 112 return $this->Current; | |
| 113 } | |
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114 } |
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115 |
| 49 | 116 1; |
| 117 __END__ | |
| 118 | |
| 119 =pod | |
| 120 | |
| 121 =head1 DESCRIPTION | |
| 122 | |
| 180 | 123 Помимо стандартных методов навигации позволяет переходить по элементам документа, |
| 124 который данной схемой описывается. | |
| 49 | 125 |
| 126 =head1 METHODS | |
| 127 | |
| 128 =over | |
| 129 | |
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130 =item C<NavigateName($name)> |
| 49 | 131 |
| 180 | 132 Переходит на схему узла с указанным именем. Тоесть использует свойство C<name>. |
| 49 | 133 |
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134 =item C<SchemaBack> |
| 49 | 135 |
| 180 | 136 Возвращается на позицию до последней операции C<NavigateName>. Данный метод нужен |
| 137 посокольку операция навигации по элементам описываемым схемой может приводить к | |
| 138 нескольким операциям навигации по самой схеме. | |
| 49 | 139 |
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140 =item C<SourceSchemaNode> |
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141 |
| 180 | 142 Получает схему узла из которого было выполнено перенаправление, например, C<IMPL::DOM::Schema::Node>. |
| 143 В остальных случаях совпадает со свойством C<Current>. | |
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144 |
| 49 | 145 =back |
| 146 | |
| 147 =cut |