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  <h1>Function definition</h1>

<div class="doc doc-object doc-module">


<a id="streampipes.model.resource.function_definition"></a>
  <div class="doc doc-contents first">

  
  <div class="doc doc-children">


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<h2 id="streampipes.model.resource.function_definition.FunctionDefinition" class="doc doc-heading">
        <code>FunctionDefinition</code>


<a href="#streampipes.model.resource.function_definition.FunctionDefinition" class="headerlink" title="Permanent link">&para;</a></h2>


  <div class="doc doc-contents ">
      <p class="doc doc-class-bases">
        Bases: <code><a class="autorefs autorefs-internal" title="streampipes.model.resource.resource.Resource" href="../resource/#streampipes.model.resource.resource.Resource">Resource</a></code></p>

  
      <p>Configuration for a StreamPipes Function.</p>
<p>This class maps to the <code>FunctionDefinition</code> class in the StreamPipes model.
It contains all metadata that are required to register a function at the StreamPipes backend.</p>

  <table>
    <thead>
      <tr>
        <th><b>PARAMETER</b></th>
        <th><b>DESCRIPTION</b></th>
      </tr>
    </thead>
    <tbody>
        <tr>
          <td><code>function_id</code></td>
          <td class="doc-param-details">
            <p>identifier object of a StreamPipes function</p>
            <p>
            </p>
          </td>
        </tr>
        <tr>
          <td><code>consumed_streams</code></td>
          <td class="doc-param-details">
            <p>list of data streams the function is consuming from</p>
            <p>
            </p>
          </td>
        </tr>
    </tbody>
  </table>


  <div class="doc doc-children">


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<h3 id="streampipes.model.resource.function_definition.FunctionDefinition.FunctionId" class="doc doc-heading">
        <code>FunctionId</code>


<a href="#streampipes.model.resource.function_definition.FunctionDefinition.FunctionId" class="headerlink" title="Permanent link">&para;</a></h3>


  <div class="doc doc-contents ">
      <p class="doc doc-class-bases">
        Bases: <code><a class="autorefs autorefs-internal" title="streampipes.model.common.BasicModel" href="../../common/#streampipes.model.common.BasicModel">BasicModel</a></code></p>

  
      <p>Identification object for a StreamPipes function.</p>
<p>Maps to the <code>FunctionId</code> class defined in the StreamPipes model.</p>

  <table>
    <thead>
      <tr>
        <th><b>PARAMETER</b></th>
        <th><b>DESCRIPTION</b></th>
      </tr>
    </thead>
    <tbody>
        <tr>
          <td><code>id</code></td>
          <td class="doc-param-details">
            <p>unique identifier of the function instance</p>
            <p>
            </p>
          </td>
        </tr>
        <tr>
          <td><code>version</code></td>
          <td class="doc-param-details">
            <p>version of the corresponding function</p>
            <p>
            </p>
          </td>
        </tr>
    </tbody>
  </table>


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<h3 id="streampipes.model.resource.function_definition.FunctionDefinition.add_output_data_stream" class="doc doc-heading">
<code class="highlight language-python"><span class="n">add_output_data_stream</span><span class="p">(</span><span class="n">data_stream</span><span class="p">)</span></code>

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  <div class="doc doc-contents ">
  
      <p>Adds an output data stream to the function which makes it possible to write data back to StreamPipes.</p>

  <table>
    <thead>
      <tr>
        <th><b>PARAMETER</b></th>
        <th><b>DESCRIPTION</b></th>
      </tr>
    </thead>
    <tbody>
        <tr>
          <td><code>data_stream</code></td>
          <td class="doc-param-details">
            <p>The schema of the output data stream.</p>
            <p>
                <span class="doc-param-annotation">
                  <b>TYPE:</b>
                    <code><a class="autorefs autorefs-internal" title="streampipes.model.resource.data_stream.DataStream" href="../data_stream/#streampipes.model.resource.data_stream.DataStream">DataStream</a></code>
                </span>
            </p>
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<h3 id="streampipes.model.resource.function_definition.FunctionDefinition.convert_to_pandas_representation" class="doc doc-heading">
<code class="highlight language-python"><span class="n">convert_to_pandas_representation</span><span class="p">()</span></code>

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  <div class="doc doc-contents ">
  
      <p>Returns the dictionary representation of a function definition
to be used when creating a pandas Dataframe.</p>

  </div>

</div>

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<h3 id="streampipes.model.resource.function_definition.FunctionDefinition.get_output_data_streams" class="doc doc-heading">
<code class="highlight language-python"><span class="n">get_output_data_streams</span><span class="p">()</span></code>

<a href="#streampipes.model.resource.function_definition.FunctionDefinition.get_output_data_streams" class="headerlink" title="Permanent link">&para;</a></h3>


  <div class="doc doc-contents ">
  
      <p>Get the output data streams of the function.</p>

  <table>
    <thead>
      <tr>
        <th><b>RETURNS</b></th>
        <th><b>DESCRIPTION</b></th>
      </tr>
    </thead>
    <tbody>
        <tr>
          <td>
              <span class="doc-returns-annotation">
                  <code>Dictonary with every stream id and the related output stream.</code>
              </span>
          </td>
          <td class="doc-returns-details">
            
          </td>
        </tr>
    </tbody>
  </table>

  </div>

</div>

<div class="doc doc-object doc-function">


<h3 id="streampipes.model.resource.function_definition.FunctionDefinition.get_output_stream_ids" class="doc doc-heading">
<code class="highlight language-python"><span class="n">get_output_stream_ids</span><span class="p">()</span></code>

<a href="#streampipes.model.resource.function_definition.FunctionDefinition.get_output_stream_ids" class="headerlink" title="Permanent link">&para;</a></h3>


  <div class="doc doc-contents ">
  
      <p>Get the stream ids of the output data streams.</p>

  <table>
    <thead>
      <tr>
        <th><b>RETURNS</b></th>
        <th><b>DESCRIPTION</b></th>
      </tr>
    </thead>
    <tbody>
        <tr>
          <td>
              <span class="doc-returns-annotation">
                  <code>List of all stream ids.</code>
              </span>
          </td>
          <td class="doc-returns-details">
            
          </td>
        </tr>
    </tbody>
  </table>

  </div>

</div>


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