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<a href="pypattyrn-module.html">Package&nbsp;pypattyrn</a> ::
<a href="pypattyrn.creational-module.html">Package&nbsp;creational</a> ::
Module&nbsp;builder
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<h1 class="epydoc">Source Code for <a href="pypattyrn.creational.builder-module.html">Module pypattyrn.creational.builder</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno"> 1</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">abc</tt> <tt class="py-keyword">import</tt> <tt class="py-name">ABCMeta</tt><tt class="py-op">,</tt> <tt class="py-name">abstractmethod</tt> </tt>
<a name="Director"></a><div id="Director-def"><a name="L2"></a><tt class="py-lineno"> 2</tt> <tt class="py-line"> </tt>
<a name="L3"></a><tt class="py-lineno"> 3</tt> <tt class="py-line"> </tt>
<a name="L4"></a><tt class="py-lineno"> 4</tt> <a class="py-toggle" href="#" id="Director-toggle" onclick="return toggle('Director');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="pypattyrn.creational.builder.Director-class.html">Director</a><tt class="py-op">(</tt><tt class="py-base-class">object</tt><tt class="py-op">,</tt> <tt class="py-base-class">metaclass</tt><tt class="py-op">=</tt><tt class="py-base-class">ABCMeta</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Director-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="Director-expanded"><a name="L5"></a><tt class="py-lineno"> 5</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L6"></a><tt class="py-lineno"> 6</tt> <tt class="py-line"><tt class="py-docstring"> Abstract director class, responsible for using a builder to fully construct an object.</tt> </tt>
<a name="L7"></a><tt class="py-lineno"> 7</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L8"></a><tt class="py-lineno"> 8</tt> <tt class="py-line"><tt class="py-docstring"> - External Usage documentation: U{https://github.com/tylerlaberge/PyPatterns/wiki/Creational-Pattern-Usage}</tt> </tt>
<a name="L9"></a><tt class="py-lineno"> 9</tt> <tt class="py-line"><tt class="py-docstring"> - External Builder Pattern documentation: U{https://en.wikipedia.org/wiki/Builder_pattern}</tt> </tt>
<a name="L10"></a><tt class="py-lineno">10</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L11"></a><tt class="py-lineno">11</tt> <tt class="py-line"> </tt>
<a name="Director.__init__"></a><div id="Director.__init__-def"><a name="L12"></a><tt class="py-lineno">12</tt> <a class="py-toggle" href="#" id="Director.__init__-toggle" onclick="return toggle('Director.__init__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypattyrn.creational.builder.Director-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Director.__init__-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Director.__init__-expanded"><a name="L13"></a><tt class="py-lineno">13</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L14"></a><tt class="py-lineno">14</tt> <tt class="py-line"><tt class="py-docstring"> Initialize a new Director.</tt> </tt>
<a name="L15"></a><tt class="py-lineno">15</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L16"></a><tt class="py-lineno">16</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-0" class="py-name" targets="Module pypattyrn.creational.builder=pypattyrn.creational.builder-module.html"><a title="pypattyrn.creational.builder" class="py-name" href="#" onclick="return doclink('link-0', 'builder', 'link-0');">builder</a></tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
</div><a name="L17"></a><tt class="py-lineno">17</tt> <tt class="py-line"> </tt>
<a name="L18"></a><tt class="py-lineno">18</tt> <tt class="py-line"> <tt class="py-decorator">@</tt><tt class="py-decorator">abstractmethod</tt> </tt>
<a name="Director.construct"></a><div id="Director.construct-def"><a name="L19"></a><tt class="py-lineno">19</tt> <a class="py-toggle" href="#" id="Director.construct-toggle" onclick="return toggle('Director.construct');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypattyrn.creational.builder.Director-class.html#construct">construct</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Director.construct-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Director.construct-expanded"><a name="L20"></a><tt class="py-lineno">20</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L21"></a><tt class="py-lineno">21</tt> <tt class="py-line"><tt class="py-docstring"> Abstract method for fully constructing an object.</tt> </tt>
<a name="L22"></a><tt class="py-lineno">22</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L23"></a><tt class="py-lineno">23</tt> <tt class="py-line"><tt class="py-docstring"> Concrete implementations should override this and use a builder to construct the object.</tt> </tt>
<a name="L24"></a><tt class="py-lineno">24</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L25"></a><tt class="py-lineno">25</tt> <tt class="py-line"><tt class="py-docstring"> @raise NotImplementedError: If this method is not overridden.</tt> </tt>
<a name="L26"></a><tt class="py-lineno">26</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L27"></a><tt class="py-lineno">27</tt> <tt class="py-line"> <tt class="py-keyword">pass</tt> </tt>
</div><a name="L28"></a><tt class="py-lineno">28</tt> <tt class="py-line"> </tt>
<a name="Director.get_constructed_object"></a><div id="Director.get_constructed_object-def"><a name="L29"></a><tt class="py-lineno">29</tt> <a class="py-toggle" href="#" id="Director.get_constructed_object-toggle" onclick="return toggle('Director.get_constructed_object');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypattyrn.creational.builder.Director-class.html#get_constructed_object">get_constructed_object</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Director.get_constructed_object-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Director.get_constructed_object-expanded"><a name="L30"></a><tt class="py-lineno">30</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L31"></a><tt class="py-lineno">31</tt> <tt class="py-line"><tt class="py-docstring"> Get the object this director is responsible for constructing.</tt> </tt>
<a name="L32"></a><tt class="py-lineno">32</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L33"></a><tt class="py-lineno">33</tt> <tt class="py-line"><tt class="py-docstring"> @return: The object that this director is responsible for constructing.</tt> </tt>
<a name="L34"></a><tt class="py-lineno">34</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L35"></a><tt class="py-lineno">35</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-1" class="py-name"><a title="pypattyrn.creational.builder" class="py-name" href="#" onclick="return doclink('link-1', 'builder', 'link-0');">builder</a></tt><tt class="py-op">.</tt><tt class="py-name">constructed_object</tt> </tt>
</div></div><a name="L36"></a><tt class="py-lineno">36</tt> <tt class="py-line"> </tt>
<a name="Builder"></a><div id="Builder-def"><a name="L37"></a><tt class="py-lineno">37</tt> <tt class="py-line"> </tt>
<a name="L38"></a><tt class="py-lineno">38</tt> <a class="py-toggle" href="#" id="Builder-toggle" onclick="return toggle('Builder');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="pypattyrn.creational.builder.Builder-class.html">Builder</a><tt class="py-op">(</tt><tt class="py-base-class">object</tt><tt class="py-op">,</tt> <tt class="py-base-class">metaclass</tt><tt class="py-op">=</tt><tt class="py-base-class">ABCMeta</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Builder-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="Builder-expanded"><a name="L39"></a><tt class="py-lineno">39</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L40"></a><tt class="py-lineno">40</tt> <tt class="py-line"><tt class="py-docstring"> Abstract builder class, responsible for constructing various pieces of an object.</tt> </tt>
<a name="L41"></a><tt class="py-lineno">41</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L42"></a><tt class="py-lineno">42</tt> <tt class="py-line"><tt class="py-docstring"> - External Usage documentation: U{https://github.com/tylerlaberge/PyPatterns/wiki/Creational-Pattern-Usage}</tt> </tt>
<a name="L43"></a><tt class="py-lineno">43</tt> <tt class="py-line"><tt class="py-docstring"> - External Builder Pattern documentation: U{https://en.wikipedia.org/wiki/Builder_pattern}</tt> </tt>
<a name="L44"></a><tt class="py-lineno">44</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L45"></a><tt class="py-lineno">45</tt> <tt class="py-line"> </tt>
<a name="Builder.__init__"></a><div id="Builder.__init__-def"><a name="L46"></a><tt class="py-lineno">46</tt> <a class="py-toggle" href="#" id="Builder.__init__-toggle" onclick="return toggle('Builder.__init__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypattyrn.creational.builder.Builder-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">constructed_object</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Builder.__init__-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Builder.__init__-expanded"><a name="L47"></a><tt class="py-lineno">47</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L48"></a><tt class="py-lineno">48</tt> <tt class="py-line"><tt class="py-docstring"> Initialize a new Builder.</tt> </tt>
<a name="L49"></a><tt class="py-lineno">49</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L50"></a><tt class="py-lineno">50</tt> <tt class="py-line"><tt class="py-docstring"> Concrete Builders should call this method from within their own __init__ method.</tt> </tt>
<a name="L51"></a><tt class="py-lineno">51</tt> <tt class="py-line"><tt class="py-docstring"> The concrete __init__ method should also register all build options to build methods,</tt> </tt>
<a name="L52"></a><tt class="py-lineno">52</tt> <tt class="py-line"><tt class="py-docstring"> by using the _register method.</tt> </tt>
<a name="L53"></a><tt class="py-lineno">53</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L54"></a><tt class="py-lineno">54</tt> <tt class="py-line"><tt class="py-docstring"> @param constructed_object: An instance of an object this builder is responsible for.</tt> </tt>
<a name="L55"></a><tt class="py-lineno">55</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L56"></a><tt class="py-lineno">56</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">constructed_object</tt> <tt class="py-op">=</tt> <tt class="py-name">constructed_object</tt> </tt>
<a name="L57"></a><tt class="py-lineno">57</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">build_methods</tt> <tt class="py-op">=</tt> <tt class="py-name">dict</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L58"></a><tt class="py-lineno">58</tt> <tt class="py-line"> </tt>
<a name="Builder.build"></a><div id="Builder.build-def"><a name="L59"></a><tt class="py-lineno">59</tt> <a class="py-toggle" href="#" id="Builder.build-toggle" onclick="return toggle('Builder.build');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypattyrn.creational.builder.Builder-class.html#build">build</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">build_option</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-param">kwargs</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Builder.build-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Builder.build-expanded"><a name="L60"></a><tt class="py-lineno">60</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L61"></a><tt class="py-lineno">61</tt> <tt class="py-line"><tt class="py-docstring"> Build a piece of the constructed object.</tt> </tt>
<a name="L62"></a><tt class="py-lineno">62</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L63"></a><tt class="py-lineno">63</tt> <tt class="py-line"><tt class="py-docstring"> @param build_option: The part of the object to build. All build options should have been registered in __init__.</tt> </tt>
<a name="L64"></a><tt class="py-lineno">64</tt> <tt class="py-line"><tt class="py-docstring"> @type build_option: str</tt> </tt>
<a name="L65"></a><tt class="py-lineno">65</tt> <tt class="py-line"><tt class="py-docstring"> @param kwargs: Additional arguments for building.</tt> </tt>
<a name="L66"></a><tt class="py-lineno">66</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L67"></a><tt class="py-lineno">67</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">build_methods</tt><tt class="py-op">[</tt><tt class="py-name">build_option</tt><tt class="py-op">]</tt><tt class="py-op">(</tt><tt class="py-op">**</tt><tt class="py-name">kwargs</tt><tt class="py-op">)</tt> </tt>
</div><a name="L68"></a><tt class="py-lineno">68</tt> <tt class="py-line"> </tt>
<a name="Builder._register"></a><div id="Builder._register-def"><a name="L69"></a><tt class="py-lineno">69</tt> <a class="py-toggle" href="#" id="Builder._register-toggle" onclick="return toggle('Builder._register');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypattyrn.creational.builder.Builder-class.html#_register">_register</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">build_option</tt><tt class="py-op">,</tt> <tt class="py-param">build_method</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Builder._register-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Builder._register-expanded"><a name="L70"></a><tt class="py-lineno">70</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L71"></a><tt class="py-lineno">71</tt> <tt class="py-line"><tt class="py-docstring"> Register a build option to a build method.</tt> </tt>
<a name="L72"></a><tt class="py-lineno">72</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L73"></a><tt class="py-lineno">73</tt> <tt class="py-line"><tt class="py-docstring"> All concrete builders should call this method in their constructor at least once.</tt> </tt>
<a name="L74"></a><tt class="py-lineno">74</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L75"></a><tt class="py-lineno">75</tt> <tt class="py-line"><tt class="py-docstring"> @param build_option: A string representing the part of the object to build.</tt> </tt>
<a name="L76"></a><tt class="py-lineno">76</tt> <tt class="py-line"><tt class="py-docstring"> @type build_option: str</tt> </tt>
<a name="L77"></a><tt class="py-lineno">77</tt> <tt class="py-line"><tt class="py-docstring"> @param build_method: The method to call when given build option is selected.</tt> </tt>
<a name="L78"></a><tt class="py-lineno">78</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L79"></a><tt class="py-lineno">79</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">build_methods</tt><tt class="py-op">[</tt><tt class="py-name">build_option</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-name">build_method</tt> </tt>
</div></div><a name="L80"></a><tt class="py-lineno">80</tt> <tt class="py-line"> </tt><script type="text/javascript">
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