Example usage for org.springframework.beans.factory.config PropertyPlaceholderConfigurer SYSTEM_PROPERTIES_MODE

Introduction

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

Prototype

int SYSTEM_PROPERTIES_MODE_FALLBACK

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Document

Check system properties if not resolvable in the specified properties.

Usage

From source file:ch.tatool.app.util.ContextUtils.java

/**
 * Create a new BeanFactory using the main ApplicationContext as parent.
 * //  ww  w. j a  v  a2 s.  c om
 * @param classpath the path to the bean definition file in the classpath 
 * @param properties set of properties that should be replaced in the definitions
 * @return a BeanFactory instance
 */
public static BeanFactory createBeanFactory(String classpath, Properties properties) {
    // create an empty bean factory 
    DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();

    // load the context file - has to be done here, otherwise properties won't get resolved
    XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(beanFactory);
    Resource resource = new ClassPathResource(classpath);
    reader.loadBeanDefinitions(resource);

    // apply the properties to the context
    PropertyPlaceholderConfigurer configurer = new PropertyPlaceholderConfigurer();
    configurer.setProperties(properties);
    configurer.setIgnoreUnresolvablePlaceholders(false);
    configurer.setIgnoreResourceNotFound(false);
    configurer.setSystemPropertiesMode(PropertyPlaceholderConfigurer.SYSTEM_PROPERTIES_MODE_FALLBACK);
    configurer.postProcessBeanFactory(beanFactory);

    return beanFactory;
}

From source file:org.alfresco.config.SystemPropertiesFactoryBean.java

@SuppressWarnings("unchecked")
@Override//w w  w  . ja  va2  s .c o  m
protected Properties mergeProperties() throws IOException {
    // First do the default merge
    Properties props = super.mergeProperties();

    // Now resolve all the merged properties
    if (this.systemPropertiesMode == PropertyPlaceholderConfigurer.SYSTEM_PROPERTIES_MODE_NEVER) {
        // If we are in never mode, we don't refer to system properties at all
        for (String systemProperty : (Set<String>) (Set) props.keySet()) {
            resolveMergedProperty(systemProperty, props);
        }
    } else {
        // Otherwise, we allow unset properties to drift through from the systemProperties set and potentially set
        // ones to be overriden by system properties
        Set<String> propNames = new HashSet<String>((Set<String>) (Set) props.keySet());
        propNames.addAll(this.systemProperties);
        for (String systemProperty : propNames) {
            resolveMergedProperty(systemProperty, props);
            if (this.systemPropertiesMode == PropertyPlaceholderConfigurer.SYSTEM_PROPERTIES_MODE_FALLBACK
                    && props.containsKey(systemProperty)) {
                // It's already there
                continue;
            }
            // Get the system value and assign if present
            String systemPropertyValue = System.getProperty(systemProperty);
            if (systemPropertyValue != null) {
                props.put(systemProperty, systemPropertyValue);
            }
        }
    }
    return props;
}

Example usage for org.springframework.beans.factory.config PropertyPlaceholderConfigurer SYSTEM_PROPERTIES_MODE_FALLBACK

Introduction

Prototype

Document

Usage