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    FunctionContext
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  <h1>Function context</h1>

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<h2 id="streampipes.functions.utils.function_context.FunctionContext" class="doc doc-heading">
<code class="highlight language-python"><span class="n">FunctionContext</span><span class="p">(</span><span class="n">function_id</span><span class="p">,</span> <span class="n">schema</span><span class="p">,</span> <span class="n">client</span><span class="p">,</span> <span class="n">streams</span><span class="p">)</span></code>

<a href="#streampipes.functions.utils.function_context.FunctionContext" class="headerlink" title="Permanent link">&para;</a></h2>


  <div class="doc doc-contents ">

  
      <p>Container for the context of a StreamPipesFunction.</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>The id of this function.</p>
            <p>
                <span class="doc-param-annotation">
                  <b>TYPE:</b>
                    <code>str</code>
                </span>
            </p>
          </td>
        </tr>
        <tr>
          <td><code>schema</code></td>
          <td class="doc-param-details">
            <p>A dictonary which contains the schema of a data stream for each stream id.</p>
            <p>
                <span class="doc-param-annotation">
                  <b>TYPE:</b>
                    <code><span title="typing.Dict">Dict</span>[str, <a class="autorefs autorefs-internal" title="streampipes.model.resource.data_stream.DataStream" href="../../../model/resource/data_stream/#streampipes.model.resource.data_stream.DataStream">DataStream</a>]</code>
                </span>
            </p>
          </td>
        </tr>
        <tr>
          <td><code>client</code></td>
          <td class="doc-param-details">
            <p>The client to interact with the API.</p>
            <p>
                <span class="doc-param-annotation">
                  <b>TYPE:</b>
                    <code><a class="autorefs autorefs-internal" title="streampipes.client.client.StreamPipesClient" href="../../../client/client/#streampipes.client.client.StreamPipesClient">StreamPipesClient</a></code>
                </span>
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        <tr>
          <td><code>streams</code></td>
          <td class="doc-param-details">
            <p>The ids of the streams needed by this function.</p>
            <p>
                <span class="doc-param-annotation">
                  <b>TYPE:</b>
                    <code><span title="typing.List">List</span>[str]</code>
                </span>
            </p>
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<h3 id="streampipes.functions.utils.function_context.FunctionContext.add_data_stream_schema" class="doc doc-heading">
<code class="highlight language-python"><span class="n">add_data_stream_schema</span><span class="p">(</span><span class="n">stream_id</span><span class="p">,</span> <span class="n">data_stream</span><span class="p">)</span></code>

<a href="#streampipes.functions.utils.function_context.FunctionContext.add_data_stream_schema" class="headerlink" title="Permanent link">&para;</a></h3>


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      <p>Adds a new data stream for a new stream id.</p>

  <table>
    <thead>
      <tr>
        <th><b>PARAMETER</b></th>
        <th><b>DESCRIPTION</b></th>
      </tr>
    </thead>
    <tbody>
        <tr>
          <td><code>stream_id</code></td>
          <td class="doc-param-details">
            <p>The id of the data stream.</p>
            <p>
                <span class="doc-param-annotation">
                  <b>TYPE:</b>
                    <code>str</code>
                </span>
            </p>
          </td>
        </tr>
        <tr>
          <td><code>data_stream</code></td>
          <td class="doc-param-details">
            <p>The schema of the 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="../../../model/resource/data_stream/#streampipes.model.resource.data_stream.DataStream">DataStream</a></code>
                </span>
            </p>
          </td>
        </tr>
    </tbody>
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  <table>
    <thead>
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        <th><b>RETURNS</b></th>
        <th><b>DESCRIPTION</b></th>
      </tr>
    </thead>
    <tbody>
        <tr>
          <td>
              <span class="doc-returns-annotation">
                  <code>None</code>
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