Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Many ways to do it .</p> <p>You could do with simple overloading :</p> <pre><code>bool add(Shader *ptr){ return addShader(ptr); } bool add(Mesh *ptr){ return addMesh(ptr); } bool add(Texture *ptr){ return addTexture(ptr); } </code></pre> <p>or if you want to use templates, just make the add and get methods template methods and specialize </p> <pre><code>template&lt;class T&gt; void add(T *ptr){ } </code></pre> <p>and for each resource type</p> <pre><code>template&lt;&gt; ResourceManager&lt;Texture&gt;::add(Texture *ptr){ return addTexture(ptr); } template&lt;&gt; ResourceManager&lt;Shader&gt;::add(Shader *ptr){ return addShader(ptr); } template&lt;&gt; ResourceManager&lt;Mesh&gt;::add(Mesh *ptr){ return addMesh(ptr); } </code></pre> <p>Another cleaner option would be to make a template method which would return the target container </p> <pre><code>template&lt;typename T&gt; std::map&lt;std::string, std::auto_ptr&lt;typename T&gt; &gt; &amp;getContainer(){ } </code></pre> <p>Specialize it to return the good container given the type</p> <pre><code>template&lt;&gt; std::map&lt;std::string, std::auto_ptr&lt;Mesh&gt; &gt; &amp;ResourceManager::getContainer&lt;Mesh&gt;(){ return meshes_map; } template&lt;&gt; std::map&lt;std::string, std::auto_ptr&lt;Texture&gt; &gt; &amp;ResourceManager::getContainer&lt;Texture&gt;(){ return textures_map; } template&lt;&gt; std::map&lt;std::string, std::auto_ptr&lt;Shader&gt; &gt; &amp;ResourceManager::getContainer&lt;Shader&gt;(){ return shader_map; } </code></pre> <p>This would boil down the get method for example to something like:</p> <pre><code> template&lt;typename T&gt; T* get(const std::string &amp;name){ return getContainer&lt;T&gt;().get(name); } </code></pre> <p>Disclaimer: that is just a quickie, i did'nt compiled it.Ask if you have more questions</p> <p>Edit concerning your compilation error: You call <code>resourceManager.release&lt;Shader&gt;(sh);</code> For the picture, replace E with Shader in the release method and you'll see that it cannot compile . release(textures, ptr) For your release method to compile you have to cast explicitely ie:</p> <pre><code>template&lt;class E&gt; inline void release(E *ptr) { if(typeid(E) == typeid(Shader)) { release&lt;shaders_map, Shader&gt;(shaders, (Shader*)((void*)ptr)); return; } else if(typeid(E) == typeid(Mesh)) { release&lt;meshes_map, Mesh&gt;(meshes, (Mesh*)((void*)ptr)); return; } else if(typeid(E) == typeid(Texture)) { release&lt;textures_map, Texture&gt;(textures, (Texture*)((void*)ptr)); } } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POError in templates in probably wrong designed resource manager
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USOualid Jabnoune
    1. USOualid Jabnoune
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POError in templates in probably wrong designed resource manager
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COI think I will refractory this class but can anyone tell me why release method in my code causes problem?
      singulars
      1. PO
      1. USmicnyk
    2. COI edited the answer
      singulars
      1. PO
      1. USOualid Jabnoune
    3. COthank you very much!
      singulars
      1. PO
      1. USmicnyk
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload