Examples with ScriptFactory org.springframework.scripting.ScriptFactory used on opensource projects

Example 1 with ScriptFactory

use of org.springframework.scripting.ScriptFactory in project spring-framework by spring-projects.

the class ScriptFactoryPostProcessor method predictBeanType.

@Override
@Nullable
public Class<?> predictBeanType(Class<?> beanClass, String beanName) {
    // We only apply special treatment to ScriptFactory implementations here.
    if (!ScriptFactory.class.isAssignableFrom(beanClass)) {
        return null;
    }
    Assert.state(this.beanFactory != null, "No BeanFactory set");
    BeanDefinition bd = this.beanFactory.getMergedBeanDefinition(beanName);
    try {
        String scriptFactoryBeanName = SCRIPT_FACTORY_NAME_PREFIX + beanName;
        String scriptedObjectBeanName = SCRIPTED_OBJECT_NAME_PREFIX + beanName;
        prepareScriptBeans(bd, scriptFactoryBeanName, scriptedObjectBeanName);
        ScriptFactory scriptFactory = this.scriptBeanFactory.getBean(scriptFactoryBeanName, ScriptFactory.class);
        ScriptSource scriptSource = getScriptSource(scriptFactoryBeanName, scriptFactory.getScriptSourceLocator());
        Class<?>[] interfaces = scriptFactory.getScriptInterfaces();
        Class<?> scriptedType = scriptFactory.getScriptedObjectType(scriptSource);
        if (scriptedType != null) {
            return scriptedType;
        } else if (!ObjectUtils.isEmpty(interfaces)) {
            return (interfaces.length == 1 ? interfaces[0] : createCompositeInterface(interfaces));
        } else {
            if (bd.isSingleton()) {
                return this.scriptBeanFactory.getBean(scriptedObjectBeanName).getClass();
            }
        }
    } catch (Exception ex) {
        if (ex instanceof BeanCreationException && ((BeanCreationException) ex).getMostSpecificCause() instanceof BeanCurrentlyInCreationException) {
            if (logger.isTraceEnabled()) {
                logger.trace("Could not determine scripted object type for bean '" + beanName + "': " + ex.getMessage());
            }
        } else {
            if (logger.isDebugEnabled()) {
                logger.debug("Could not determine scripted object type for bean '" + beanName + "'", ex);
            }
        }
    }
    return null;
}

Example 2 with ScriptFactory

use of org.springframework.scripting.ScriptFactory in project spring-framework by spring-projects.

the class ScriptFactoryPostProcessor method postProcessBeforeInstantiation.

@Override
public Object postProcessBeforeInstantiation(Class<?> beanClass, String beanName) {
    // We only apply special treatment to ScriptFactory implementations here.
    if (!ScriptFactory.class.isAssignableFrom(beanClass)) {
        return null;
    }
    Assert.state(this.beanFactory != null, "No BeanFactory set");
    BeanDefinition bd = this.beanFactory.getMergedBeanDefinition(beanName);
    String scriptFactoryBeanName = SCRIPT_FACTORY_NAME_PREFIX + beanName;
    String scriptedObjectBeanName = SCRIPTED_OBJECT_NAME_PREFIX + beanName;
    prepareScriptBeans(bd, scriptFactoryBeanName, scriptedObjectBeanName);
    ScriptFactory scriptFactory = this.scriptBeanFactory.getBean(scriptFactoryBeanName, ScriptFactory.class);
    ScriptSource scriptSource = getScriptSource(scriptFactoryBeanName, scriptFactory.getScriptSourceLocator());
    boolean isFactoryBean = false;
    try {
        Class<?> scriptedObjectType = scriptFactory.getScriptedObjectType(scriptSource);
        // Returned type may be null if the factory is unable to determine the type.
        if (scriptedObjectType != null) {
            isFactoryBean = FactoryBean.class.isAssignableFrom(scriptedObjectType);
        }
    } catch (Exception ex) {
        throw new BeanCreationException(beanName, "Could not determine scripted object type for " + scriptFactory, ex);
    }
    long refreshCheckDelay = resolveRefreshCheckDelay(bd);
    if (refreshCheckDelay >= 0) {
        Class<?>[] interfaces = scriptFactory.getScriptInterfaces();
        RefreshableScriptTargetSource ts = new RefreshableScriptTargetSource(this.scriptBeanFactory, scriptedObjectBeanName, scriptFactory, scriptSource, isFactoryBean);
        boolean proxyTargetClass = resolveProxyTargetClass(bd);
        String language = (String) bd.getAttribute(LANGUAGE_ATTRIBUTE);
        if (proxyTargetClass && (language == null || !language.equals("groovy"))) {
            throw new BeanDefinitionValidationException("Cannot use proxyTargetClass=true with script beans where language is not 'groovy': '" + language + "'");
        }
        ts.setRefreshCheckDelay(refreshCheckDelay);
        return createRefreshableProxy(ts, interfaces, proxyTargetClass);
    }
    if (isFactoryBean) {
        scriptedObjectBeanName = BeanFactory.FACTORY_BEAN_PREFIX + scriptedObjectBeanName;
    }
    return this.scriptBeanFactory.getBean(scriptedObjectBeanName);
}

Example 3 with ScriptFactory

use of org.springframework.scripting.ScriptFactory in project spring-framework by spring-projects.

the class ScriptFactoryPostProcessor method prepareScriptBeans.

/**
 * Prepare the script beans in the internal BeanFactory that this
 * post-processor uses. Each original bean definition will be split
 * into a ScriptFactory definition and a scripted object definition.
 * @param bd the original bean definition in the main BeanFactory
 * @param scriptFactoryBeanName the name of the internal ScriptFactory bean
 * @param scriptedObjectBeanName the name of the internal scripted object bean
 */
protected void prepareScriptBeans(BeanDefinition bd, String scriptFactoryBeanName, String scriptedObjectBeanName) {
    // Avoid recreation of the script bean definition in case of a prototype.
    synchronized (this.scriptBeanFactory) {
        if (!this.scriptBeanFactory.containsBeanDefinition(scriptedObjectBeanName)) {
            this.scriptBeanFactory.registerBeanDefinition(scriptFactoryBeanName, createScriptFactoryBeanDefinition(bd));
            ScriptFactory scriptFactory = this.scriptBeanFactory.getBean(scriptFactoryBeanName, ScriptFactory.class);
            ScriptSource scriptSource = getScriptSource(scriptFactoryBeanName, scriptFactory.getScriptSourceLocator());
            Class<?>[] interfaces = scriptFactory.getScriptInterfaces();
            Class<?>[] scriptedInterfaces = interfaces;
            if (scriptFactory.requiresConfigInterface() && !bd.getPropertyValues().isEmpty()) {
                Class<?> configInterface = createConfigInterface(bd, interfaces);
                scriptedInterfaces = ObjectUtils.addObjectToArray(interfaces, configInterface);
            }
            BeanDefinition objectBd = createScriptedObjectBeanDefinition(bd, scriptFactoryBeanName, scriptSource, scriptedInterfaces);
            long refreshCheckDelay = resolveRefreshCheckDelay(bd);
            if (refreshCheckDelay >= 0) {
                objectBd.setScope(BeanDefinition.SCOPE_PROTOTYPE);
            }
            this.scriptBeanFactory.registerBeanDefinition(scriptedObjectBeanName, objectBd);
        }
    }
}