public class CompositePropertySource extends EnumerablePropertySource<Object>
PropertySource implementation that iterates over a set of
 PropertySource instances. Necessary in cases where multiple property sources
 share the same name, e.g. when multiple values are supplied to @PropertySource.
 As of Spring 4.1.2, this class extends EnumerablePropertySource instead
 of plain PropertySource, exposing getPropertyNames() based on the
 accumulated property names from all contained sources (as far as possible).
PropertySource.StubPropertySourcelogger, name, source| Constructor and Description | 
|---|
| CompositePropertySource(String name)Create a new  CompositePropertySource. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | addFirstPropertySource(PropertySource<?> propertySource)Add the given  PropertySourceto the start of the chain. | 
| void | addPropertySource(PropertySource<?> propertySource)Add the given  PropertySourceto the end of the chain. | 
| boolean | containsProperty(String name)Return whether this  PropertySourcecontains a property with the given name. | 
| Object | getProperty(String name)Return the value associated with the given name,
 or  nullif not found. | 
| String[] | getPropertyNames()Return the names of all properties contained by the
 source object (never  null). | 
| Collection<PropertySource<?>> | getPropertySources()Return all property sources that this composite source holds. | 
| String | toString()Produce concise output (type and name) if the current log level does not include
 debug. | 
public CompositePropertySource(String name)
CompositePropertySource.name - the name of the property source@Nullable public Object getProperty(String name)
PropertySourcenull if not found.getProperty in class PropertySource<Object>name - the property to findPropertyResolver.getRequiredProperty(String)public boolean containsProperty(String name)
EnumerablePropertySourcePropertySource contains a property with the given name.
 This implementation checks for the presence of the given name within the
 EnumerablePropertySource.getPropertyNames() array.
containsProperty in class EnumerablePropertySource<Object>name - the name of the property to findpublic String[] getPropertyNames()
EnumerablePropertySourcenull).getPropertyNames in class EnumerablePropertySource<Object>public void addPropertySource(PropertySource<?> propertySource)
PropertySource to the end of the chain.propertySource - the PropertySource to addpublic void addFirstPropertySource(PropertySource<?> propertySource)
PropertySource to the start of the chain.propertySource - the PropertySource to addpublic Collection<PropertySource<?>> getPropertySources()
public String toString()
PropertySourceThis variable verbosity is useful as a property source such as system properties or environment variables may contain an arbitrary number of property pairs, potentially leading to difficult to read exception and log messages.
toString in class PropertySource<Object>Log.isDebugEnabled()