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| <h1 class="content-header header-section1" id="pgui_quickstart_createdatamodel" itemprop="headline">Create a data-model</h1> |
| </div></div><p>In simple cases you can build data-models using |
| <code class="inline-code">java.lang</code> and <code class="inline-code">java.util</code> classes |
| and custom Java Beans:</p><ul> |
| <li> |
| <p>Use <code class="inline-code">java.lang.String</code> for strings.</p> |
| </li> |
| |
| <li> |
| <p>Use <code class="inline-code">java.lang.Number</code> descents for |
| numbers.</p> |
| </li> |
| |
| <li> |
| <p>Use <code class="inline-code">java.lang.Boolean</code> for boolean |
| values.</p> |
| </li> |
| |
| <li> |
| <p>Use <code class="inline-code">java.util.List</code> or Java arrays for |
| sequences.</p> |
| </li> |
| |
| <li> |
| <p>Use <code class="inline-code">java.util.Map</code> for hashes.</p> |
| </li> |
| |
| <li> |
| <p>Use your custom bean class for hashes where the items |
| correspond to the bean properties. For example the |
| <code class="inline-code">price</code> property of <code class="inline-code">product</code> |
| can be get as <code class="inline-code">product.price</code>. (The actions of |
| the beans can be exposed as well; see much later <a href="pgui_misc_beanwrapper.html">here</a>)</p> |
| </li> |
| </ul><p>For example, let's build the data-model of the <a href="dgui_quickstart_basics.html#example.first">first example of the Template Author's |
| Guide</a>. For convenience, here it is again:</p> |
| |
| <div class="code-wrapper"><pre class="code-block code-data-model">(root) |
| | |
| +- user = "Big Joe" |
| | |
| +- latestProduct |
| | |
| +- url = "products/greenmouse.html" |
| | |
| +- name = "green mouse"</pre></div><p>This is the Java code fragment that builds this |
| data-model:</p> |
| |
| <div class="code-wrapper"><pre class="code-block code-unspecified">// Create the root hash |
| Map root = new HashMap(); |
| // Put string ``user'' into the root |
| root.put("user", "Big Joe"); |
| // Create the hash for ``latestProduct'' |
| Map latest = new HashMap(); |
| // and put it into the root |
| root.put("latestProduct", latest); |
| // put ``url'' and ``name'' into latest |
| latest.put("url", "products/greenmouse.html"); |
| latest.put("name", "green mouse");</pre></div><p>For the <code class="inline-code">latestProduct</code> you migh as well use a |
| Java Bean that has <code class="inline-code">url</code> and <code class="inline-code">name</code> |
| properties (that is, an object that has public <code class="inline-code">String |
| getURL()</code> and <code class="inline-code">String getName()</code> methods); |
| it's the same from viewpoint of the template.</p><div class="bottom-pagers-wrapper"><div class="pagers bottom"><a class="paging-arrow previous" href="pgui_quickstart_createconfiguration.html"><span>Previous</span></a><a class="paging-arrow next" href="pgui_quickstart_gettemplate.html"><span>Next</span></a></div></div></div></div> </div> |
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