REXML parsing issue

ruby-talk
1

Disclaimer: I'm new to programming and ruby.

I've used REXML to write both tree and stream parsers for simple xml
files but I can't seem to return values for the xml below in either
case:

<HIT NO="1" RANK="15335" SITEID="0" MOREHITS="0" FCOCOUNT="0">
   <FIELD NAME="title">Sample Text</FIELD>
</HIT>

In this example I'd like to return the value (Sample Text)for the <FIELD
NAME="title"> tag? So my question is how do I specify this attribute to
either a tree or stream parser?

Any help would be appreciated.

Thanks.

···

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2

Charles Sword wrote:

I've used REXML to write both tree and stream parsers for simple xml
files but I can't seem to return values for the xml below in either
case:

<HIT NO="1" RANK="15335" SITEID="0" MOREHITS="0" FCOCOUNT="0">
   <FIELD NAME="title">Sample Text</FIELD>
</HIT>

In this example I'd like to return the value (Sample Text)for the <FIELD
NAME="title"> tag? So my question is how do I specify this attribute to
either a tree or stream parser?

Use XPath:

  title = REXML::XPath.first(doc, '/HIT/FIELD[ "title" = @name ]').text

Look up my assert_xpath project for more XPath scenarios.

···

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   Phlip

3

Thanks Phlip. That allowed me to get to the first instance in each
document but I'm struggling with populating an array with XPath.each?
Here's the statement I'm using:

url=REXML::XPath.each(doc, '//HIT/FIELD[ "url" = @NAME ]').text
{|element|}

I'm getting a 'no code block given' error but I thought this should pass
each element back to the array url?

Thanks in advance for any further help.

charles

Phlip wrote:

···

Charles Sword wrote:

either a tree or stream parser?

Use XPath:

  title = REXML::XPath.first(doc, '/HIT/FIELD[ "title" = @name ]').text

Look up my assert_xpath project for more XPath scenarios.

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Posted via http://www.ruby-forum.com/\.

4

Disregard previous post. I was able to work through how to iterate
through the rest of the document.

Thanks again for your help.

Charles Sword wrote:

···

Thanks Phlip. That allowed me to get to the first instance in each
document but I'm struggling with populating an array with XPath.each?
Here's the statement I'm using:

url=REXML::XPath.each(doc, '//HIT/FIELD[ "url" = @NAME ]').text
{|element|}

I'm getting a 'no code block given' error but I thought this should pass
each element back to the array url?

Thanks in advance for any further help.

charles

Phlip wrote:

Charles Sword wrote:

either a tree or stream parser?

Use XPath:

  title = REXML::XPath.first(doc, '/HIT/FIELD[ "title" = @name ]').text

Look up my assert_xpath project for more XPath scenarios.

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Posted via http://www.ruby-forum.com/\.