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<h3 class="sectionHead"><span class="titlemark">3.4 </span> <a
id="x17-810003.4"></a>DataClass</h3>
<!--l. 452--><p class="noindent" >
</p>
<h4 class="subsectionHead"><span class="titlemark">3.4.1 </span> <a
id="x17-820003.4.1"></a>Description</h4>
<!--l. 454--><p class="noindent" >The <span id="textcolor47"><span
class="ec-lmssbx-10">DataClass</span></span> enables the modeling of hierarchical complex data types and operations on them. The data class is the
equivalent to a class in languages like Java or C++, but has less features. The content of a data class can always be sent via
message between actors (defined as message data in a <span id="textcolor48"><span
class="ec-lmssbx-10">ProtocolClass</span></span>).
</p><!--l. 458--><p class="noindent" >
</p>
<h4 class="subsectionHead"><span class="titlemark">3.4.2 </span> <a
id="x17-830003.4.2"></a>Notation</h4>
<!--l. 460--><p class="noindent" >Example: DataClass using PrimitiveTypes
</p>
<!--l. 462-->
<div class="lstlisting" id="listing-34"><span class="label"><a
id="x17-83001r1"></a></span><span
class="ec-lmssbx-10x-x-90">DataClass</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">DataClass1</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">{</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83002r2"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">Attribute</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">attribute1</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">int32</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">//</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">attribute</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">of</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">primitive</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">type</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83003r3"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">Attribute</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">attribute2</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">float32</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">//</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">attribute</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">of</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">another</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">primitive</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">type</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83004r4"></a></span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83005r5"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">//</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">no</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">arguments</span><span
class="ec-lmtt-9">,</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">no</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">return</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">value</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83006r6"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">Operation</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">operation1</span><span
class="ec-lmtt-9">()</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">void</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">{</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83007r7"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">"</span><span
class="ec-lmtt-9">UserCodeLine1</span><span
class="ec-lmtt-9">"</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83008r8"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">}</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83009r9"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">//</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">argument</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">of</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">primitive</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">type</span><span
class="ec-lmtt-9">,</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">no</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">return</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">value</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83010r10"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">Operation</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">operation2</span><span
class="ec-lmtt-9">(</span><span
class="ec-lmtt-9">Param1</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">int32</span><span
class="ec-lmtt-9">)</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">void</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">{</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83011r11"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">"</span><span
class="ec-lmtt-9">UserCodeLine1</span><span
class="ec-lmtt-9">"</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83012r12"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">}</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83013r13"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">//</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">argument</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">of</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">primitive</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">type</span><span
class="ec-lmtt-9">,</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">return</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">value</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">of</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">primitive</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">type</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83014r14"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">Operation</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">operation3</span><span
class="ec-lmtt-9">(</span><span
class="ec-lmtt-9">Param1</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">int32</span><span
class="ec-lmtt-9">)</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">float64</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">{</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83015r15"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">"</span><span
class="ec-lmtt-9">UserCodeLine1</span><span
class="ec-lmtt-9">"</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83016r16"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">}</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83017r17"></a></span><span
class="ec-lmtt-9">}</span>
</div>
<!--l. 483--><p class="noindent" >Example: DataClass using other DataClasses:
</p>
<!--l. 485-->
<div class="lstlisting" id="listing-35"><span class="label"><a
id="x17-83018r1"></a></span><span
class="ec-lmssbx-10x-x-90">DataClass</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">DataClass2</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">{</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83019r2"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">Attribute</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">attribute1</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">int32</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">//</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">attribute</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">of</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">primitive</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">type</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83020r3"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">Attribute</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">attribute2</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">DataClass1</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">//</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">attribute</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">of</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">DataClass</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83021r4"></a></span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83022r5"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">//</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">arguments</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">and</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">return</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">value</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">by</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">value</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83023r6"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">Operation</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">operation1</span><span
class="ec-lmtt-9">(</span><span
class="ec-lmtt-9">Param1</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">int32</span><span
class="ec-lmtt-9">,</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">Param2</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">DataClass1</span><span
class="ec-lmtt-9">)</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">DataClass1</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">{</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83024r7"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">"</span><span
class="ec-lmtt-9">UserCodeLine1</span><span
class="ec-lmtt-9">"</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83025r8"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">}</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83026r9"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">//</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">arguments</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">and</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">return</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">value</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">by</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">reference</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">except</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">for</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">primitive</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">types</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83027r10"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">Operation</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">operation2</span><span
class="ec-lmtt-9">(</span><span
class="ec-lmtt-9">Param1</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">int32</span><span
class="ec-lmtt-9">,</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">Param2</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">DataClass1</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">ref</span><span
class="ec-lmtt-9">)</span><span
class="ec-lmtt-9">:</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">DataClass1</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmssbx-10x-x-90">ref</span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">{</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83028r11"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">"</span><span
class="ec-lmtt-9">UserCodeLine1</span><span
class="ec-lmtt-9">"</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83029r12"></a></span><span
class="ec-lmtt-9"> </span><span
class="ec-lmtt-9">}</span><span
class="ec-lmtt-9"> </span><br /><span class="label"><a
id="x17-83030r13"></a></span><span
class="ec-lmtt-9">}</span>
</div>
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