Example usage for org.springframework.beans.factory.config BeanDefinition isSingleton

Introduction

In this page you can find the example usage for org.springframework.beans.factory.config BeanDefinition isSingleton.

Prototype

boolean isSingleton();

Source Link

Document

Return whether this a Singleton, with a single, shared instance returned on all calls.

Usage

From source file:org.springframework.scripting.support.ScriptFactoryPostProcessor.java

@Override
@Nullable/*from w ww .ja  v a  2  s . c o m*/
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;
}

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