Mercurial > pub > Impl
annotate Lib/IMPL/DOM/XMLReader.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 | 4d0e1962161c |
| children | 0f59b2de72af |
| rev | line source |
|---|---|
| 49 | 1 package IMPL::DOM::XMLReader; |
| 2 use strict; | |
| 3 use warnings; | |
| 4 | |
| 166 | 5 use parent qw(IMPL::Object IMPL::Object::Autofill); |
| 49 | 6 use IMPL::Class::Property; |
| 7 use IMPL::Class::Property::Direct; | |
| 8 use XML::Parser; | |
|
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9 require IMPL::DOM::Schema; |
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10 require IMPL::DOM::Navigator::Builder; |
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11 require IMPL::DOM::Navigator::SimpleBuilder; |
| 49 | 12 |
| 13 __PACKAGE__->PassThroughArgs; | |
| 14 | |
| 15 BEGIN { | |
| 16 public _direct property Navigator => prop_get | owner_set; | |
| 152 | 17 public _direct property SkipWhitespace => prop_get | owner_set; |
| 49 | 18 private _direct property _current => prop_all; |
| 19 private _direct property _text => prop_all; | |
| 20 private _direct property _textHistory => prop_all; | |
| 21 } | |
| 22 | |
| 23 sub Parse { | |
| 24 my ($this,$in) = @_; | |
| 25 | |
| 26 my $parser = new XML::Parser( | |
| 27 Handlers => { | |
| 28 Start => sub {shift; goto &OnStart($this,@_)}, | |
| 29 End => sub {shift; goto &OnEnd($this,@_)}, | |
| 30 Char => sub {shift; goto &OnChar($this,@_)} | |
| 31 } | |
| 32 ); | |
| 33 | |
| 34 $parser->parse($in); | |
| 35 } | |
| 36 | |
| 37 sub ParseFile { | |
| 38 my ($this,$in) = @_; | |
| 39 | |
| 40 my $parser = new XML::Parser( | |
| 41 Handlers => { | |
| 42 Start => sub {shift; unshift @_, $this; goto &_OnBegin;}, | |
| 43 End => sub {shift; unshift @_, $this; goto &_OnEnd;}, | |
| 44 Char => sub {shift; unshift @_, $this; goto &_OnChar;} | |
| 45 } | |
| 46 ); | |
| 47 | |
| 48 $parser->parsefile($in); | |
| 49 } | |
| 50 | |
| 51 sub _OnBegin { | |
| 52 my ($this,$element,%attrs) = @_; | |
| 53 | |
| 54 push @{$this->{$_textHistory}},$this->{$_text}; | |
| 55 $this->{$_text} = ""; | |
| 56 $this->{$_current} = $this->Navigator->NavigateCreate($element,%attrs); | |
| 57 } | |
| 58 | |
| 59 sub _OnEnd { | |
| 60 my ($this,$element) = @_; | |
| 152 | 61 $this->{$_current}->nodeValue($this->Navigator->inflateValue( $this->{$_text} ) ) if length $this->{$_text} and (not $this->{$SkipWhitespace} or $this->{$_text} =~ /\S/); |
| 49 | 62 $this->{$_text} = pop @{$this->{$_textHistory}}; |
| 63 $this->{$_current} = $this->Navigator->Back; | |
| 64 } | |
| 65 | |
| 66 sub _OnChar { | |
| 67 my ($this,$val) = @_; | |
| 68 $this->{$_text} .= $val; | |
| 69 } | |
| 70 | |
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71 sub LoadDocument { |
| 194 | 72 my ($self,$file,$schema) = @_; |
| 73 | |
| 74 my $parser; | |
| 75 if ($schema) { | |
| 76 $schema = IMPL::DOM::Schema->LoadSchema($schema) if not ref $schema; | |
| 77 $parser = $self->new( | |
| 78 Navigator => IMPL::DOM::Navigator::Builder->new( | |
| 79 'IMPL::DOM::Document', | |
| 80 $schema | |
| 81 ) | |
| 82 ); | |
| 83 } else { | |
| 84 $parser = $self->new( | |
| 85 Navigator => IMPL::DOM::Navigator::SimpleBuilder->new() | |
| 86 ); | |
| 87 } | |
| 88 | |
| 89 $parser->ParseFile($file); | |
| 90 my $doc = $parser->Navigator->Document; | |
| 91 if ($schema) { | |
| 92 my @errors = $parser->Navigator->BuildErrors; | |
| 93 push @errors, $schema->Validate($doc); | |
| 94 die new IMPL::Exception("Loaded document doesn't match the schema", @errors) if @errors; | |
| 95 } | |
| 96 return $doc; | |
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196bf443b5e1
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wizard
parents:
103
diff
changeset
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97 } |
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wizard
parents:
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diff
changeset
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98 |
| 49 | 99 1; |
| 100 | |
| 101 __END__ | |
| 102 | |
| 103 =pod | |
| 104 | |
| 105 =head1 SYNOPSIS | |
| 106 | |
| 107 my $reader = new IMPL::DOM::XMLReader(Navigator => $DomBuilder); | |
| 108 my $obj = $reader->parsefile("data.xml"); | |
| 109 | |
| 110 =head1 DESCRIPTION | |
| 111 | |
| 180 | 112 Простой класс, использующий навигатор для постороения документа. В зависимости от |
| 113 используемого навигатора может быть получен различный результат. | |
| 49 | 114 |
| 180 | 115 Навигатор должен поодерживать методы C<NavigateCreate> и C<Back> |
| 49 | 116 |
| 117 =head1 METHODS | |
| 118 | |
| 119 =over | |
| 120 | |
| 121 =item C<CTOR(Naviagtor => $builder)> | |
| 122 | |
| 180 | 123 Создает новый экземпляр парсера, с указанным навигатором для построения документа |
| 49 | 124 |
| 125 =item C<$obj->Parse($in)> | |
| 126 | |
| 180 | 127 Строит документ. На вход получает либо xml строку, либо HANDLE. |
| 49 | 128 |
| 129 =item C<$obj->ParseFile($fileName)> | |
| 130 | |
| 180 | 131 Строит документ из файла с именем C<$fileName>. |
| 49 | 132 |
| 133 =back | |
| 134 | |
| 135 =cut |