Class OpenWFE::AttributeExpression
In: lib/openwfe/expressions/fe_fqv.rb
Parent: FlowExpression

The ‘a’ or ‘attribute’ expression. Directly describing some variable or list content in XML or in YAML. 

    _set :field => "list" do
        _a """
            <list>
                <string>a</string>
                <string>b</string>
                <string>c</string>
            </list>
        """
    end

or 

    _set :field => "list" do
        _attribute """
    ---
    - a
    - b
    - c
        """
     end

Note that it‘s actually easier to write : 

    _set :filed => "list" do
        reval "[ 'a', 'b', 'c' ]"
    end

but it‘s less secure.

Methods

apply  

Public Instance methods

apply(workitem)

[Source]

     # File lib/openwfe/expressions/fe_fqv.rb, line 156
156:         def apply workitem
157: 
158:             #text = fetch_text_content workitem
159:             #text = text.strip
160:             #result = if text[0, 3] == "---"
161:             #    YAML.load text
162:             #else
163:             #    d = REXML::Document.new text
164:             #    XmlCodec::decode_attribute d.root
165:             #end
166: 
167:             child = @children.first
168: 
169:             text = if child.is_a?(String)
170: 
171:                 child
172: 
173:             elsif child.is_a?(FlowExpressionId)
174: 
175:                 exp = get_expression_pool.fetch_expression child
176:                 ExpressionTree.to_s exp.raw_representation
177: 
178:             else
179: 
180:                 child.to_s
181:             end
182: 
183:             text = text.strip
184: 
185:             result = if text[0, 3] == '---'
186:                 YAML.load text
187:             else
188:                 d = REXML::Document.new text
189:                 XmlCodec::decode_attribute d.root
190:             end
191: 
192:             workitem.set_result(result) if result != nil
193: 
194:             reply_to_parent workitem
195:         end

[Validate]