Examples of org.springframework.core.env.EnumerablePropertySource

org.springframework.core.env.EnumerablePropertySource

A {@link PropertySource} implementation capable of interrogating itsunderlying source object to enumerate all possible property name/value pairs. Exposes the {@link #getPropertyNames()} method to allow callersto introspect available properties without having to access the underlying source object. This also facilitates a more efficient implementation of {@link #containsProperty(String)}, in that it can call {@link #getPropertyNames()}and iterate through the returned array rather than attempting a call to {@link #getProperty(String)} which may be more expensive. Implementations mayconsider caching the result of {@link #getPropertyNames()} to fully exploit thisperformance opportunity. Most framework-provided {@code PropertySource} implementations are enumerable;a counter-example would be {@code JndiPropertySource} where, due to thenature of JNDI it is not possible to determine all possible property names at any given time; rather it is only possible to try to access a property (via {@link #getProperty(String)}) in order to evaluate whether it is present or not. @author Chris Beams @since 3.1

            propertyNames = new ArrayList<String>();
            Environment env = Environment.getCurrent();
            String key = "environments." + env.getName();
            for(PropertySource propertySource : source) {
                if((propertySource != this) && propertySource instanceof EnumerablePropertySource) {
                    EnumerablePropertySource enumerablePropertySource = (EnumerablePropertySource)propertySource;


                    for(String propertyName : enumerablePropertySource.getPropertyNames()) {
                        if(propertyName.startsWith(key)) {
                            propertyNames.add(propertyName.substring(key.length() + 1));
                        }
                    }
                }

Examples of org.springframework.core.env.EnumerablePropertySource

Related Classes of org.springframework.core.env.EnumerablePropertySource