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| 66 | <div class="navpath"><b>bdm</b>::<a class="el" href="classbdm_1_1SettingResolver.html">SettingResolver</a> |
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| 69 | <div class="contents"> |
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| 70 | <h1>bdm::SettingResolver Class Reference</h1><!-- doxytag: class="bdm::SettingResolver" --><!-- doxytag: inherits="bdm::root" -->This class serves to expand links used within configuration files. |
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| 71 | <a href="#_details">More...</a> |
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| 72 | <p> |
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| 73 | <code>#include <<a class="el" href="user__info_8h_source.html">user_info.h</a>></code> |
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| 74 | <p> |
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| 75 | |
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| 76 | <p> |
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| 77 | <a href="classbdm_1_1SettingResolver-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0"> |
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| 78 | <tr><td></td></tr> |
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| 79 | <tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr> |
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| 80 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e2299746b95bf8af54a867aaf52fc8da"></a><!-- doxytag: member="bdm::SettingResolver::SettingResolver" ref="e2299746b95bf8af54a867aaf52fc8da" args="(const Setting &potential_link)" --> |
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| 81 | </td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1SettingResolver.html#e2299746b95bf8af54a867aaf52fc8da">SettingResolver</a> (const Setting &potential_link)</td></tr> |
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| 82 | |
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| 83 | <tr><td class="mdescLeft"> </td><td class="mdescRight">If potential_link contains a link to some other setting, it is resolved here. Anyway, the Setting reference <a class="el" href="classbdm_1_1SettingResolver.html#adfcd0a81d025c52c8335b6aea07b498" title="Reference to a resolved link or to the original Setting in the case it does not contain...">result</a> is prepared for use. <br></td></tr> |
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| 84 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c8b29999710e2db98c1a3979e25e6bbc"></a><!-- doxytag: member="bdm::SettingResolver::~SettingResolver" ref="c8b29999710e2db98c1a3979e25e6bbc" args="()" --> |
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| 85 | </td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1SettingResolver.html#c8b29999710e2db98c1a3979e25e6bbc">~SettingResolver</a> ()</td></tr> |
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| 86 | |
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| 87 | <tr><td class="mdescLeft"> </td><td class="mdescRight">An opened <a class="el" href="classbdm_1_1UIFile.html" title="This class serves to load and/or save user-infos into/from configuration files stored...">UIFile</a> file is closed here if necessary. <br></td></tr> |
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| 88 | <tr><td colspan="2"><br><h2>Public Attributes</h2></td></tr> |
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| 89 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="adfcd0a81d025c52c8335b6aea07b498"></a><!-- doxytag: member="bdm::SettingResolver::result" ref="adfcd0a81d025c52c8335b6aea07b498" args="" --> |
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| 90 | const Setting & </td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1SettingResolver.html#adfcd0a81d025c52c8335b6aea07b498">result</a></td></tr> |
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| 91 | |
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| 92 | <tr><td class="mdescLeft"> </td><td class="mdescRight">Reference to a resolved link or to the original Setting in the case it does not contain a link. <br></td></tr> |
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| 93 | <tr><td colspan="2"><br><h2>Private Member Functions</h2></td></tr> |
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| 94 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="af0e6941ba5919cae1bc530e2181b109"></a><!-- doxytag: member="bdm::SettingResolver::to_string" ref="af0e6941ba5919cae1bc530e2181b109" args="()" --> |
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| 95 | virtual string </td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1root.html#af0e6941ba5919cae1bc530e2181b109">to_string</a> ()</td></tr> |
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| 96 | |
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| 97 | <tr><td class="mdescLeft"> </td><td class="mdescRight">This method returns a basic info about the current instance. <br></td></tr> |
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| 98 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0551e3121091c5199bf4413b50522176"></a><!-- doxytag: member="bdm::SettingResolver::from_setting" ref="0551e3121091c5199bf4413b50522176" args="(const Setting &set)" --> |
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| 99 | virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1root.html#0551e3121091c5199bf4413b50522176">from_setting</a> (const Setting &set)</td></tr> |
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| 100 | |
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| 101 | <tr><td class="mdescLeft"> </td><td class="mdescRight">This method arrange instance properties according the data stored in the Setting structure. <br></td></tr> |
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| 102 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="67d954d255ede776eade7334d4895790"></a><!-- doxytag: member="bdm::SettingResolver::to_setting" ref="67d954d255ede776eade7334d4895790" args="(Setting &set) const " --> |
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| 103 | virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1root.html#67d954d255ede776eade7334d4895790">to_setting</a> (Setting &set) const </td></tr> |
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| 104 | |
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| 105 | <tr><td class="mdescLeft"> </td><td class="mdescRight">This method save all the instance properties into the Setting structure. <br></td></tr> |
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| 106 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="1c314bd6d6dacb8ba78ea5eb88fd9516"></a><!-- doxytag: member="bdm::SettingResolver::validate" ref="1c314bd6d6dacb8ba78ea5eb88fd9516" args="()" --> |
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| 107 | virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1root.html#1c314bd6d6dacb8ba78ea5eb88fd9516">validate</a> ()</td></tr> |
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| 108 | |
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| 109 | <tr><td class="mdescLeft"> </td><td class="mdescRight">This method TODO. <br></td></tr> |
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| 110 | </table> |
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| 111 | <hr><a name="_details"></a><h2>Detailed Description</h2> |
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| 112 | This class serves to expand links used within configuration files. |
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| 113 | <p> |
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| 114 | Value of any type but string can be linked to some other value of the same type defined elsewhere in the current configuration file or even in some different configuration file.<p> |
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| 115 | Link have three parts, <name> : <path> <@filename>. Field <name> contains the name of the new setting, <path> is the relative path to the referenced setting, which has to be taken from the root Setting element. The last part <@filename> is optional, it contains filename in the case the link should refer to a variable stored in a different file. From the previous part <path>, it has to be separated by '@'.<p> |
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| 116 | <div class="fragment"><pre class="fragment"> ... |
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| 117 | jardovo : |
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| 118 | { |
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| 119 | <span class="keyword">class </span>= "Car"; |
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| 120 | year = 1992; |
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| 121 | manufacturer = <span class="stringliteral">"liaz"</span>; |
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| 122 | kilometers = 1555000; |
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| 123 | }; |
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| 124 | ondrejovo : |
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| 125 | { |
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| 126 | <span class="keyword">class </span>= "Bike"; |
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| 127 | year = 1996; |
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| 128 | manufacturer = <span class="stringliteral">"author"</span>; |
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| 129 | electricLights = <span class="keyword">true</span>; |
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| 130 | matr = ( 2, 2, [ 1.0, 0.0, 0.0, 1.0 ] ); |
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| 131 | }; |
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| 132 | |
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| 133 | <span class="preprocessor"> #this is the example of local link to another mean of transport</span> |
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| 134 | <span class="preprocessor"></span> elisky = <span class="stringliteral">"jardovo"</span>; |
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| 135 | |
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| 136 | ... |
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| 137 | |
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| 138 | # And <span class="keyword">this</span> link is external link pointing to the file <span class="stringliteral">"other_cars.cfg"</span> stored in the |
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| 139 | <span class="preprocessor"> # same directory. In that file, it refers to the local Setting "magic_cars.skubankovo".</span> |
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| 140 | <span class="preprocessor"></span> kati = <span class="stringliteral">"magic_cars.skubankovo@other_cars.cfg"</span>; |
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| 141 | |
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| 142 | ... |
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| 143 | </pre></div><p> |
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| 144 | When you want to expand a possible linked setting "element" within your code, it has to be treated this way:<p> |
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| 145 | <div class="fragment"><pre class="fragment"> ... |
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| 146 | |
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| 147 | <span class="keyword">const</span> <a class="code" href="classbdm_1_1SettingResolver.html#e2299746b95bf8af54a867aaf52fc8da" title="If potential_link contains a link to some other setting, it is resolved here. Anyway...">SettingResolver</a> link( element ); |
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| 148 | |
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| 149 | ... |
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| 150 | |
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| 151 | <span class="keywordtype">int</span> len = link.result.getLength(); |
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| 152 | |
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| 153 | ... |
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| 154 | </pre></div><p> |
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| 155 | The whole point is that a resolved link (class member <a class="el" href="classbdm_1_1SettingResolver.html#adfcd0a81d025c52c8335b6aea07b498" title="Reference to a resolved link or to the original Setting in the case it does not contain...">result</a>, i.e., "link.result" in the previous example) could point into a different configuration file. In that case there has to be an <a class="el" href="classbdm_1_1UIFile.html" title="This class serves to load and/or save user-infos into/from configuration files stored...">UIFile</a> instance managing reading from this file. As the libconfig::Config deletes all its Settings when dealocated, <a class="el" href="classbdm_1_1UIFile.html" title="This class serves to load and/or save user-infos into/from configuration files stored...">UIFile</a> must not be dealocated until all the necessary operation on the linked Setting are finished (otherwise, the link <a class="el" href="classbdm_1_1SettingResolver.html#adfcd0a81d025c52c8335b6aea07b498" title="Reference to a resolved link or to the original Setting in the case it does not contain...">result</a> would be invalid just after the <a class="el" href="classbdm_1_1UIFile.html" title="This class serves to load and/or save user-infos into/from configuration files stored...">UIFile</a> dealocation). And that is exactly the mechanism implemented within <a class="el" href="classbdm_1_1SettingResolver.html" title="This class serves to expand links used within configuration files.">SettingResolver</a> class. It assures, that the <a class="el" href="classbdm_1_1SettingResolver.html#adfcd0a81d025c52c8335b6aea07b498" title="Reference to a resolved link or to the original Setting in the case it does not contain...">result</a> Setting reference is valid within the scope of <a class="el" href="classbdm_1_1SettingResolver.html" title="This class serves to expand links used within configuration files.">SettingResolver</a> instance.<p> |
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| 156 | <a class="el" href="ui_page.html">User Infos and their use</a> <hr>The documentation for this class was generated from the following files:<ul> |
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| 157 | <li><a class="el" href="user__info_8h_source.html">user_info.h</a><li>user_info.cpp</ul> |
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| 158 | </div> |
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| 159 | <hr size="1"><address style="text-align: right;"><small>Generated on Wed Oct 7 17:34:46 2009 for mixpp by |
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| 160 | <a href="http://www.doxygen.org/index.html"> |
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| 161 | <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.9 </small></address> |
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