<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en"><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/><link rel="stylesheet" href="../../jacoco-resources/report.css" type="text/css"/><link rel="shortcut icon" href="../../jacoco-resources/report.gif" type="image/gif"/><title>ViewBuilder.java</title><link rel="stylesheet" href="../../jacoco-resources/prettify.css" type="text/css"/><script type="text/javascript" src="../../jacoco-resources/prettify.js"></script></head><body onload="window['PR_TAB_WIDTH']=4;prettyPrint()"><div class="breadcrumb" id="breadcrumb"><span class="info"><a href="../../jacoco-sessions.html" class="el_session">Sessions</a></span><a href="../../index.html" class="el_report">NorthernWind :: Frontend :: Components :: HTML Template</a> > <a href="../index.html" class="el_bundle">it-tidalwave-northernwind-core-default</a> > <a href="index.source.html" class="el_package">it.tidalwave.northernwind.frontend.impl.ui</a> > <span class="el_source">ViewBuilder.java</span></div><h1>ViewBuilder.java</h1><pre class="source lang-java linenums">/*
* #%L
* *********************************************************************************************************************
*
* NorthernWind - lightweight CMS
* http://northernwind.tidalwave.it - git clone https://bitbucket.org/tidalwave/northernwind-src.git
* %%
* Copyright (C) 2011 - 2023 Tidalwave s.a.s. (http://tidalwave.it)
* %%
* *********************************************************************************************************************
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
* *********************************************************************************************************************
*
*
* *********************************************************************************************************************
* #L%
*/
package it.tidalwave.northernwind.frontend.impl.ui;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import javax.annotation.Nonnull;
import javax.inject.Inject;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.BeanCreationException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.annotation.Configurable;
import it.tidalwave.util.Id;
import it.tidalwave.northernwind.core.model.HttpStatusException;
import it.tidalwave.northernwind.core.model.Site;
import it.tidalwave.northernwind.core.model.SiteNode;
import it.tidalwave.northernwind.core.model.SiteProvider;
import it.tidalwave.northernwind.frontend.ui.ViewController;
import it.tidalwave.northernwind.frontend.ui.ViewFactory.ViewAndController;
import lombok.ToString;
import lombok.extern.slf4j.Slf4j;
/***********************************************************************************************************************
*
* A builder which creates a View - ViewController pair.
*
* @stereotype Factory
*
* @author Fabrizio Giudici
*
**********************************************************************************************************************/
<span class="fc" id="L57">@Configurable @Slf4j @ToString(exclude = "beanFactory")</span>
/* package */ class ViewBuilder
{
@Inject
private BeanFactory beanFactory;
@Nonnull
/* package */ final Constructor<?> viewConstructor;
@Nonnull
/* package */ final Constructor<? extends ViewController> viewControllerConstructor;
/*******************************************************************************************************************
*
*
******************************************************************************************************************/
public ViewBuilder (@Nonnull final Class<?> viewClass,
@Nonnull final Class<? extends ViewController> viewControllerClass)
throws
IllegalArgumentException, SecurityException
<span class="pc bpc" id="L77" title="9 of 18 branches missed."> {</span>
<span class="fc" id="L78"> viewConstructor = viewClass.getConstructors()[0];</span>
<span class="fc" id="L79"> viewControllerConstructor = (Constructor<ViewController>)viewControllerClass.getConstructors()[0];</span>
<span class="pc bpc" id="L80" title="2 of 4 branches missed."> }</span>
/*******************************************************************************************************************
*
* Creates a new View - ViewController pair. They are first instantiated, and then dependency injection by means
* of constructor parameters occur. Injected fields are: the id, the {@link SiteNode}, any service declared in
* the Spring context, including {@link Site}; furthermore, a reference of the View is injected in the Controller.
*
* @param id the view id
* @param siteNode the {@link SiteNode} the view will be built for
* @return the created view
*
******************************************************************************************************************/
@Nonnull
public ViewAndController createViewAndController (@Nonnull final Id id, @Nonnull final SiteNode siteNode)
throws HttpStatusException
{
<span class="fc" id="L97"> log.debug("createViewAndController({}, {})", id, siteNode);</span>
try
{
<span class="fc" id="L101"> final var site = siteNode.getSite();</span>
<span class="fc" id="L102"> final var view = viewConstructor.newInstance(</span>
<span class="fc" id="L103"> computeConstructorArguments(site, viewConstructor, id, siteNode));</span>
<span class="fc" id="L104"> final var controller = viewControllerConstructor.newInstance(</span>
<span class="fc" id="L105"> computeConstructorArguments(site, viewControllerConstructor, id, siteNode, view));</span>
<span class="fc" id="L106"> controller.initialize();</span>
<span class="fc" id="L107"> return new ViewAndController(view, controller);</span>
}
<span class="nc" id="L109"> catch (InvocationTargetException e)</span>
{
// FIXME: cumbersome
cumbersome
<span class="nc bnc" id="L112" title="All 4 branches missed."> if ((e.getCause() instanceof BeanCreationException) && (e.getCause().getCause() instanceof HttpStatusException))</span>
{
<span class="nc" id="L114"> throw (HttpStatusException)e.getCause().getCause();</span>
}
<span class="nc" id="L117"> throw new RuntimeException(e);</span>
}
<span class="nc" id="L119"> catch (Exception e)</span>
{
<span class="nc" id="L121"> throw new RuntimeException(e);</span>
}
}
/*******************************************************************************************************************
*
* Computes the argument values for calling the given constructor. They are taken from the current
* {@link BeanFactory}, with {@code overridingArgs} eventually overriding them.
*
* @param site the site
* @param constructor the constructor
* @param overridingArgs the overriding arguments
* @return the arguments to pass to the constructor
*
******************************************************************************************************************/
@Nonnull
private Object[] computeConstructorArguments (@Nonnull final Site site,
@Nonnull final Constructor<?> constructor,
@Nonnull final Object ... overridingArgs)
{
<span class="fc" id="L141"> final List<Object> result = new ArrayList<>();</span>
<span class="fc bfc" id="L143" title="All 2 branches covered."> x: for (final var argumentType : constructor.getParameterTypes())</span>
{
<span class="fc bfc" id="L145" title="All 2 branches covered."> for (final var overridingArg : overridingArgs)</span>
{
<span class="fc bfc" id="L147" title="All 2 branches covered."> if (argumentType.isAssignableFrom(overridingArg.getClass()))</span>
{
<span class="fc" id="L149"> result.add(overridingArg);</span>
<span class="fc" id="L150"> continue x;</span>
}
}
<span class="fc bfc" id="L154" title="All 2 branches covered."> if (Site.class.isAssignableFrom(argumentType))</span>
{
<span class="fc" id="L156"> result.add(beanFactory.getBean(SiteProvider.class).getSite());</span>
}
<span class="pc bpc" id="L158" title="1 of 2 branches missed."> else if (BeanFactory.class.isAssignableFrom(argumentType))</span>
{
<span class="nc" id="L160"> result.add(beanFactory);</span>
}
else
{
<span class="fc" id="L164"> result.add(beanFactory.getBean(argumentType));</span>
}
}
<span class="fc" id="L168"> return result.toArray();</span>
}
}
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