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lecielbleu

2009-Jun-02 07:42 UTC

XML::LibXML::Reader

is there anybody who knows how we can get child values using libxml
(Reader class)

	def xml_import_to_brands
		require''xml''
		reader = XML::Reader.file(''c:/brands.xml'')
        .
        .
        .

lecielbleu

2009-Jun-03 08:36 UTC

head link

Re: XML::LibXML::Reader

i tried this an get an error NoMemoryError
failed to allocate memory
error line number 30 =    stack << reader.name


On Jun 2, 6:59 pm, "Jeffrey L. Taylor"
<r...-f/t7CGFWhwGcvWdFBKKxig@public.gmane.org>
wrote:> Quoting lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>
>
>
> > is there anybody who knows how we can get child values using libxml
> > (Reader class)
>
> >    def xml_import_to_brands
> >            require''xml''
> >            reader =
XML::Reader.file(''c:/brands.xml'')
> >         .
>
> For docs, go tohttp://libxml.rubyforge.org/rdoc/index.html, scroll down in
> middle, left windows to LibXML::XML::Reader.
>
> Something along the lines of:
>
> require ''xml''
>
> stack = []
> while reader
>   case reader.node_type
>   when XML::Reader::TYPE_ELEMENT
>     # opening tag
>     stack << reader.name
>     stack.pop if reader.empty_element?
>   when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
>     path = stack.join(''/'')
>     case path
>     when ''root/parent/child''
>       puts reader.value         # simple content
>     when ''root/parent/complex_content''
>       puts reader.read_inner_xml        # contents including markup
>   when XML::Reader::TYPE_END_ELEMENT
>     # closing tag
>     stack.pop
>   end
> end
>
> HTH,
>   Jeffrey

Jeffrey L. Taylor

2009-Jun-03 12:33 UTC

head link

Re: XML::LibXML::Reader

Have not seen this error before.  Please show more of your code.

Jeffrey

Quoting lecielbleu
<canali83-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:> 
> i tried this an get an error > NoMemoryError
> failed to allocate memory
> error line number 30 =    stack << reader.name

lecielbleu

2009-Jun-03 13:14 UTC

head link

Re: XML::LibXML::Reader

my xml data seems like that : <Brands><Brand><Brand_id>2</
Brand_id><Brand_name>HP</Brand_name></Brand>
and here is my codes

def xml_testing
		require''xml''
		reader = XML::Reader.file(''c:/brands.xml'')

		stack = []
		while reader
		  case reader.node_type
		  when XML::Reader::TYPE_ELEMENT
		    # opening tag
		    stack << reader.name
		    stack.pop if reader.empty_element?
		  when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
		    path = stack.join(''/'')
		    case path
		    when ''Brands/Brand/Brand_name''
		      puts reader.value         # simple content
		   when XML::Reader::TYPE_END_ELEMENT
		    # closing tag
		    stack.pop
		  end
	  end
	  end

		flash.now[:message]="brands read"
	end


Note : i add one more "end" cause it was saying unexpected end


On Jun 3, 3:33 pm, "Jeffrey L. Taylor"
<r...-f/t7CGFWhwGcvWdFBKKxig@public.gmane.org>
wrote:> Have not seen this error before.  Please show more of your code.
>
> Jeffrey
>
> Quoting lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>
>
>
> > i tried this an get an error > > NoMemoryError
> > failed to allocate memory
> > error line number 30 =    stack << reader.name

Jeffrey L. Taylor

2009-Jun-03 21:48 UTC

head link

Re: XML::LibXML::Reader

There are no <xml> header tags.  I have no idea how libXML will behave. 
It
isn''t very tolerant of invalid input.  Try adding the puts statements
I''ve
inserted below to find out how far it is getting.


Quoting lecielbleu
<canali83-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:> 
> my xml data seems like that :
<Brands><Brand><Brand_id>2</
> Brand_id><Brand_name>HP</Brand_name></Brand>
> and here is my codes
> 
> def xml_testing
> 		require''xml''
> 		reader = XML::Reader.file(''c:/brands.xml'')
> 
> 		stack = []
> 		while reader
> 		  case reader.node_type
> 		  when XML::Reader::TYPE_ELEMENT
> 		    # opening tag
> 		    stack << reader.name                    puts "BEGIN
#{stack.join(''/'')}"> 		    stack.pop if reader.empty_element?                    puts "END #{stack.join(''/'')}" 
if reader.empty_element?> 		  when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
> 		    path = stack.join(''/'')
> 		    case path
> 		    when ''Brands/Brand/Brand_name''
> 		      puts reader.value         # simple content
> 		   when XML::Reader::TYPE_END_ELEMENT
> 		    # closing tag                    puts "END
#{stack.join(''/'')}"> 		    stack.pop
> 		  end
> 	  end
> 	  end
> 
> 		flash.now[:message]="brands read"
> 	end

lecielbleu

2009-Jun-04 09:51 UTC

head link

Re: XML::LibXML::Reader

i guess problem is while reader line because when i run basic code
below :

while doc == true
			puts reader.read_string
		end

strings never stops in the command line , it turns infinite loop.

On Jun 4, 12:48 am, "Jeffrey L. Taylor"
<r...-f/t7CGFWhwGcvWdFBKKxig@public.gmane.org>
wrote:> There are no <xml> header tags.  I have no idea how libXML will
behave.  It
> isn''t very tolerant of invalid input.  Try adding the puts
statements I''ve
> inserted below to find out how far it is getting.
>
> Quoting lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>
> > my xml data seems like that :
<Brands><Brand><Brand_id>2</
> > Brand_id><Brand_name>HP</Brand_name></Brand>
> > and here is my codes
>
> > def xml_testing
> >            require''xml''
> >            reader =
XML::Reader.file(''c:/brands.xml'')
>
> >            stack = []
> >            while reader
> >              case reader.node_type
> >              when XML::Reader::TYPE_ELEMENT
> >                # opening tag
> >                stack << reader.name
>
>                     puts "BEGIN
#{stack.join(''/'')}">                stack.pop if
reader.empty_element?
>
>                     puts "END
#{stack.join(''/'')}"  if reader.empty_element?>        
     when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
> >                path = stack.join(''/'')
> >                case path
> >                when ''Brands/Brand/Brand_name''
> >                  puts reader.value         # simple content
> >               when XML::Reader::TYPE_END_ELEMENT
> >                # closing tag
>
>                     puts "END
#{stack.join(''/'')}"
>
> >                stack.pop
> >              end
> >      end
> >      end
>
> >            flash.now[:message]="brands read"
> >    end

lecielbleu

2009-Jun-04 09:56 UTC

head link

Re: XML::LibXML::Reader

i tried also
while doc == true
while doc = 1
while doc

results dont change....

On Jun 4, 12:51 pm, lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> i guess problem is while reader line because when i run basic code
> below :
>
> while doc == true
>                         puts reader.read_string
>                 end
>
> strings never stops in the command line , it turns infinite loop.
>
> On Jun 4, 12:48 am, "Jeffrey L. Taylor"
<r...-f/t7CGFWhwGcvWdFBKKxig@public.gmane.org> wrote:
>
> > There are no <xml> header tags.  I have no idea how libXML will
behave.  It
> > isn''t very tolerant of invalid input.  Try adding the puts
statements I''ve
> > inserted below to find out how far it is getting.
>
> > Quoting lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>
> > > my xml data seems like that :
<Brands><Brand><Brand_id>2</
> > > Brand_id><Brand_name>HP</Brand_name></Brand>
> > > and here is my codes
>
> > > def xml_testing
> > >            require''xml''
> > >            reader =
XML::Reader.file(''c:/brands.xml'')
>
> > >            stack = []
> > >            while reader
> > >              case reader.node_type
> > >              when XML::Reader::TYPE_ELEMENT
> > >                # opening tag
> > >                stack << reader.name
>
> >                     puts "BEGIN
#{stack.join(''/'')}">                stack.pop if
reader.empty_element?
>
> >                     puts "END
#{stack.join(''/'')}"  if reader.empty_element?>        
     when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
> > >                path = stack.join(''/'')
> > >                case path
> > >                when ''Brands/Brand/Brand_name''
> > >                  puts reader.value         # simple content
> > >               when XML::Reader::TYPE_END_ELEMENT
> > >                # closing tag
>
> >                     puts "END
#{stack.join(''/'')}"
>
> > >                stack.pop
> > >              end
> > >      end
> > >      end
>
> > >            flash.now[:message]="brands read"
> > >    end

Jeffrey L. Taylor

2009-Jun-04 18:36 UTC

head link

Re: XML::LibXML::Reader

I''m afraid I don''t understand what you are trying to do here. 
''doc'' isn''t in
the example below.  So how the loop would change its value, I am unclear.  It
seems like you are saying a loop with an unchanging condition runs forever.
Yes, it does.

Did you intend to do this:

while reader.read
  puts reader.read_string
end

HTH
  Jeff

Quoting lecielbleu
<canali83-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:> 
> i tried also
> while doc == true
> while doc = 1
> while doc
> 
> results dont change....
> 
> On Jun 4, 12:51 pm, lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > i guess problem is while reader line because when i run basic code
> > below :
> >
> > while doc == true
> >                         puts reader.read_string
> >                 end
> >
> > strings never stops in the command line , it turns infinite loop.
> >
> > On Jun 4, 12:48 am, "Jeffrey L. Taylor"
<r...-f/t7CGFWhwGcvWdFBKKxig@public.gmane.org> wrote:
> >
> > > There are no <xml> header tags.  I have no idea how libXML
will behave.  It
> > > isn''t very tolerant of invalid input.  Try adding the
puts statements I''ve
> > > inserted below to find out how far it is getting.
> >
> > > Quoting lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
> >
> > > > my xml data seems like that :
<Brands><Brand><Brand_id>2</
> > > >
Brand_id><Brand_name>HP</Brand_name></Brand>
> > > > and here is my codes
> >
> > > > def xml_testing
> > > >            require''xml''
> > > >            reader =
XML::Reader.file(''c:/brands.xml'')
> >
> > > >            stack = []
> > > >            while reader
> > > >              case reader.node_type
> > > >              when XML::Reader::TYPE_ELEMENT
> > > >                # opening tag
> > > >                stack << reader.name
> >
> > >                     puts "BEGIN
#{stack.join(''/'')}">                stack.pop if
reader.empty_element?
> >
> > >                     puts "END
#{stack.join(''/'')}"  if reader.empty_element?>        
     when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
> > > >                path = stack.join(''/'')
> > > >                case path
> > > >                when
''Brands/Brand/Brand_name''
> > > >                  puts reader.value         # simple content
> > > >               when XML::Reader::TYPE_END_ELEMENT
> > > >                # closing tag
> >
> > >                     puts "END
#{stack.join(''/'')}"
> >
> > > >                stack.pop
> > > >              end
> > > >      end
> > > >      end
> >
> > > >            flash.now[:message]="brands read"
> > > >    end
> >

lecielbleu

2009-Jun-07 17:48 UTC

head link

Re: XML::LibXML::Reader

ok Jeff i solved problem , using "doc" was a bad mistake :) thanks for
your support ,here is the last codes

		while reader.read
			case reader.name
				when "Brand_name"
				name_from_xml = reader.read_string
				Brand.create( :name => name_from_xml )
			end
		end

----------------------------

now i have to solve another problem :) do you know how can i get a
brand_name using filter brand_id

		while reader.read
			case reader.read_string
				when 55
                               -------magic line i couldnt find :)
----------
			end
		end

magic line must be get brand_name value "Dell" using "55"

Sample xml code ===>> 
<Brand><Brand_id>55</Brand_id><Brand_name>Dell</
Brand_name></Brand>


On Jun 4, 9:36 pm, "Jeffrey L. Taylor"
<r...-f/t7CGFWhwGcvWdFBKKxig@public.gmane.org>
wrote:> I''m afraid I don''t understand what you are trying to do
here.  ''doc'' isn''t in
> the example below.  So how the loop would change its value, I am unclear.
 It
> seems like you are saying a loop with an unchanging condition runs forever.
> Yes, it does.
>
> Did you intend to do this:
>
> while reader.read
>   puts reader.read_string
> end
>
> HTH
>   Jeff
>
> Quoting lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>
>
>
> > i tried also
> > while doc == true
> > while doc = 1
> > while doc
>
> > results dont change....
>
> > On Jun 4, 12:51 pm, lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > > i guess problem is while reader line because when i run basic
code
> > > below :
>
> > > while doc == true
> > >                         puts reader.read_string
> > >                 end
>
> > > strings never stops in the command line , it turns infinite loop.
>
> > > On Jun 4, 12:48 am, "Jeffrey L. Taylor"
<r...-f/t7CGFWhwGcvWdFBKKxig@public.gmane.org> wrote:
>
> > > > There are no <xml> header tags.  I have no idea how
libXML will behave.  It
> > > > isn''t very tolerant of invalid input.  Try adding
the puts statements I''ve
> > > > inserted below to find out how far it is getting.
>
> > > > Quoting lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>
> > > > > my xml data seems like that :
<Brands><Brand><Brand_id>2</
> > > > >
Brand_id><Brand_name>HP</Brand_name></Brand>
> > > > > and here is my codes
>
> > > > > def xml_testing
> > > > >            require''xml''
> > > > >            reader =
XML::Reader.file(''c:/brands.xml'')
>
> > > > >            stack = []
> > > > >            while reader
> > > > >              case reader.node_type
> > > > >              when XML::Reader::TYPE_ELEMENT
> > > > >                # opening tag
> > > > >                stack << reader.name
>
> > > >                     puts "BEGIN
#{stack.join(''/'')}">                stack.pop if
reader.empty_element?
>
> > > >                     puts "END
#{stack.join(''/'')}"  if reader.empty_element?>        
     when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
> > > > >                path = stack.join(''/'')
> > > > >                case path
> > > > >                when
''Brands/Brand/Brand_name''
> > > > >                  puts reader.value         # simple
content
> > > > >               when XML::Reader::TYPE_END_ELEMENT
> > > > >                # closing tag
>
> > > >                     puts "END
#{stack.join(''/'')}"
>
> > > > >                stack.pop
> > > > >              end
> > > > >      end
> > > > >      end
>
> > > > >            flash.now[:message]="brands read"
> > > > >    end

Jeffrey L. Taylor

2009-Jun-08 14:54 UTC

head link

Re: XML::LibXML::Reader

Glad it is working.

Jeff

Quoting lecielbleu
<canali83-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:> 
> ok Jeff i solved problem , using "doc" was a bad mistake :)
thanks for
> your support ,here is the last codes
> 
> 		while reader.read
> 			case reader.name
> 				when "Brand_name"
> 				name_from_xml = reader.read_string
> 				Brand.create( :name => name_from_xml )
> 			end
> 		end
> 
> ----------------------------
> 
> now i have to solve another problem :) do you know how can i get a
> brand_name using filter brand_id
> 
> 		while reader.read
> 			case reader.read_string
> 				when 55
>                                -------magic line i couldnt find :)
> ----------
> 			end
> 		end
> 
> magic line must be get brand_name value "Dell" using
"55"
> 
> Sample xml code ===>> 
<Brand><Brand_id>55</Brand_id><Brand_name>Dell</
> Brand_name></Brand>
> 
> 
> On Jun 4, 9:36 pm, "Jeffrey L. Taylor"
<r...-f/t7CGFWhwGcvWdFBKKxig@public.gmane.org> wrote:
> > I''m afraid I don''t understand what you are trying to
do here.  ''doc'' isn''t in
> > the example below.  So how the loop would change its value, I am
unclear.  It
> > seems like you are saying a loop with an unchanging condition runs
forever.
> > Yes, it does.
> >
> > Did you intend to do this:
> >
> > while reader.read
> >   puts reader.read_string
> > end
> >
> > HTH
> >   Jeff
> >
> > Quoting lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
> >
> >
> >
> > > i tried also
> > > while doc == true
> > > while doc = 1
> > > while doc
> >
> > > results dont change....
> >
> > > On Jun 4, 12:51 pm, lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > > > i guess problem is while reader line because when i run
basic code
> > > > below :
> >
> > > > while doc == true
> > > >                         puts reader.read_string
> > > >                 end
> >
> > > > strings never stops in the command line , it turns infinite
loop.
> >
> > > > On Jun 4, 12:48 am, "Jeffrey L. Taylor"
<r...-f/t7CGFWhwGcvWdFBKKxig@public.gmane.org> wrote:
> >
> > > > > There are no <xml> header tags.  I have no idea
how libXML will behave.  It
> > > > > isn''t very tolerant of invalid input.  Try
adding the puts statements I''ve
> > > > > inserted below to find out how far it is getting.
> >
> > > > > Quoting lecielbleu
<canal...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
> >
> > > > > > my xml data seems like that :
<Brands><Brand><Brand_id>2</
> > > > > >
Brand_id><Brand_name>HP</Brand_name></Brand>
> > > > > > and here is my codes
> >
> > > > > > def xml_testing
> > > > > >            require''xml''
> > > > > >            reader =
XML::Reader.file(''c:/brands.xml'')
> >
> > > > > >            stack = []
> > > > > >            while reader
> > > > > >              case reader.node_type
> > > > > >              when XML::Reader::TYPE_ELEMENT
> > > > > >                # opening tag
> > > > > >                stack << reader.name
> >
> > > > >                     puts "BEGIN
#{stack.join(''/'')}">                stack.pop if
reader.empty_element?
> >
> > > > >                     puts "END
#{stack.join(''/'')}"  if reader.empty_element?>        
     when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
> > > > > >                path =
stack.join(''/'')
> > > > > >                case path
> > > > > >                when
''Brands/Brand/Brand_name''
> > > > > >                  puts reader.value         #
simple content
> > > > > >               when XML::Reader::TYPE_END_ELEMENT
> > > > > >                # closing tag
> >
> > > > >                     puts "END
#{stack.join(''/'')}"
> >
> > > > > >                stack.pop
> > > > > >              end
> > > > > >      end
> > > > > >      end
> >
> > > > > >            flash.now[:message]="brands
read"
> > > > > >    end
> >

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XML::LibXML::Reader

Re: XML::LibXML::Reader

Re: XML::LibXML::Reader

Re: XML::LibXML::Reader

Re: XML::LibXML::Reader

Re: XML::LibXML::Reader

Re: XML::LibXML::Reader

Re: XML::LibXML::Reader

Re: XML::LibXML::Reader

Re: XML::LibXML::Reader

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