classrtticlassdescriptor.html

java 反射机制详解示例,实现类属性及方法修改

          <td class="md" nowrap valign="top"> <a class="el" href="classRTTIFieldDescriptor.html">RTTIFieldDescriptor</a>* RTTIClassDescriptor::findField </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">char const *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>name</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
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<p>
Find field by name <dl compact><dt><b>
Parameters: </b><dd>
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<tr><td valign=top><em>name</em>&nbsp;</td><td>
of the field </td></tr>
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</dl><dl compact><dt><b>
Returns: </b><dd>
field with such name or <code>NULL</code> if not found </dl>    </td>
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<a name="RTTIClassDescriptora13" doxytag="RTTIClassDescriptor::findMethod"></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="classRTTIMethodDescriptor.html">RTTIMethodDescriptor</a>* RTTIClassDescriptor::findMethod </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">char const *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>name</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
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<p>
Find method by name <dl compact><dt><b>
Parameters: </b><dd>
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<tr><td valign=top><em>name</em>&nbsp;</td><td>
of the method </td></tr>
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</dl><dl compact><dt><b>
Returns: </b><dd>
method with such name or <code>NULL</code> if not found. In case of polymorphic methods,  reference to first once is returned. <code>RTTIMethodDescriptor.getIndex()</code> method can  be used to get index of this method in array returned by <code>getMethods</code>. You can then check name, number and type of parameters of method descriptos references by following elements of the array. Code can look something like it:<br>
 <pre>
     <a class="el" href="classRTTIMethodDescriptor.html">RTTIMethodDescriptor</a>* mth = cls-&gt;findMethod(name);
     if (mth != NULL) { 
         <a class="el" href="classRTTIMethodDescriptor.html">RTTIMethodDescriptor</a>** allMethods = cls-&gt;<a class="el" href="classRTTIClassDescriptor.html#RTTIClassDescriptora10">getMethods</a>();
         for (int i = mth-&gt;getIndex(), 
                        n = cls-&gt;<a class="el" href="classRTTIClassDescriptor.html#RTTIClassDescriptora11">getNumberOfMethods</a>(); 
              i &lt; n &amp;&amp; strcmp(allMethods[i]-&gt;getName, name) == 0; 
              i++) 
         { 
              if (allMethods[i]-&gt;getNumberOfParamters() == nParams 
                  &amp;&amp; ... ) // check if method profile matches profile of searched method
              {
                  return allMethods[i];
              } 
         } 
     }
     return NULL;
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<a name="RTTIClassDescriptora8" doxytag="RTTIClassDescriptor::getBaseClasses"></a><p>
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          <td class="md" nowrap valign="top"> RTTIClassDescriptor** RTTIClassDescriptor::getBaseClasses </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [inline]</code></td>
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<p>
Get base classes of this class <dl compact><dt><b>
Returns: </b><dd>
array of pointers to base classes descriptors </dl>    </td>
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<a name="RTTIClassDescriptora2" doxytag="RTTIClassDescriptor::getFields"></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="classRTTIFieldDescriptor.html">RTTIFieldDescriptor</a>** RTTIClassDescriptor::getFields </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [inline]</code></td>
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<p>
Get array of class fields. <dl compact><dt><b>
Returns: </b><dd>
array of pointers to field descriptors ordered by field name. </dl>    </td>
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<a name="RTTIClassDescriptora6" doxytag="RTTIClassDescriptor::getFlags"></a><p>
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          <td class="md" nowrap valign="top"> int RTTIClassDescriptor::getFlags </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [inline]</code></td>
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<p>
Get class flags <dl compact><dt><b>
Returns: </b><dd>
combination of <code>RTTIClassFlags</code> flags </dl>    </td>
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<a name="RTTIClassDescriptora10" doxytag="RTTIClassDescriptor::getMethods"></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="classRTTIMethodDescriptor.html">RTTIMethodDescriptor</a>** RTTIClassDescriptor::getMethods </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [inline]</code></td>
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<p>
Get array with the clas methods <dl compact><dt><b>
Returns: </b><dd>
array of pointers to method descriptors ordered by method name </dl>    </td>
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<a name="RTTIClassDescriptora4" doxytag="RTTIClassDescriptor::getName"></a><p>
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          <td class="md" nowrap valign="top"> char const* RTTIClassDescriptor::getName </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [inline]</code></td>
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<p>
Get name of the class <dl compact><dt><b>
Returns: </b><dd>
class name </dl>    </td>
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<a name="RTTIClassDescriptora1" doxytag="RTTIClassDescriptor::getNext"></a><p>
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          <td class="md" nowrap valign="top"> RTTIClassDescriptor* RTTIClassDescriptor::getNext </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [inline]</code></td>
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<p>
Get next class. All classes in repository are linked in L1 list.  Repository <code>getFirstClass</code> method can be used to get reference to first class  descriptor in the list. And <code>getNext</code> method can be used to iterate through the * list <dl compact><dt><b>
Returns: </b><dd>
next class descriptor in the list or <code>NULL</code> if this class descriptor is the last </dl>    </td>
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<a name="RTTIClassDescriptora9" doxytag="RTTIClassDescriptor::getNumberOfBaseClasses"></a><p>
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          <td class="md" nowrap valign="top"> int RTTIClassDescriptor::getNumberOfBaseClasses </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [inline]</code></td>
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<p>
Get number of base classes <dl compact><dt><b>
Returns: </b><dd>
number of direct base classes </dl>    </td>
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<a name="RTTIClassDescriptora3" doxytag="RTTIClassDescriptor::getNumberOfFields"></a><p>
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          <td class="md" nowrap valign="top"> int RTTIClassDescriptor::getNumberOfFields </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [inline]</code></td>
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<p>
Get number of fields in the class <dl compact><dt><b>
Returns: </b><dd>
number of fields in the class (size of array returned by <code>getFields</code> method) </dl>    </td>
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<a name="RTTIClassDescriptora11" doxytag="RTTIClassDescriptor::getNumberOfMethods"></a><p>
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