org.dnwiebe.orienteer.lookups

Class PropertiesLookup

java.lang.Object

org.dnwiebe.orienteer.lookups.Lookup

org.dnwiebe.orienteer.lookups.PropertiesLookup

Direct Known Subclasses:

SystemPropsLookup

public class PropertiesLookup
extends Lookup

Looks up values in the supplied Properties object. Method name abcDEFGhi becomes abc.def.ghi.

Constructor Summary

Constructors

Constructor and Description
PropertiesLookup(InputStream istr)
PropertiesLookup(Properties properties)
PropertiesLookup(String resourceName)
PropertiesLookup(String name, InputStream istr)
PropertiesLookup(String name, Properties properties)
PropertiesLookup(String name, String resourceName)

Method Summary

Modifier and Type	Method and Description
String	nameFromFragments(List<String> fragments) Assemble an attribute name that conforms to this Lookup's naming scheme from the provided list of name fragments.
String	valueFromName(String name, Class singletonType) Perform the actual lookup characteristic of this Lookup.

Methods inherited from class org.dnwiebe.orienteer.lookups.Lookup

capitalize, getName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PropertiesLookup

public PropertiesLookup(String resourceName)

PropertiesLookup

public PropertiesLookup(InputStream istr)

PropertiesLookup

public PropertiesLookup(Properties properties)

PropertiesLookup

public PropertiesLookup(String name,
                        String resourceName)

PropertiesLookup

public PropertiesLookup(String name,
                        InputStream istr)

PropertiesLookup

public PropertiesLookup(String name,
                        Properties properties)

Method Detail

nameFromFragments

public String nameFromFragments(List<String> fragments)

Description copied from class: Lookup

Assemble an attribute name that conforms to this Lookup's naming scheme from the provided list of name fragments. This is where the naming scheme for a Lookup is defined.

Specified by:

nameFromFragments in class Lookup

Parameters:

fragments - This will be the camel-cased name of the method from your configuration interface, broken apart into fragments. For example, "threadPoolSize" will become {"thread", "Pool", "Size"} and "weatherServiceBaseURL" will become {"weather", "Service", "Base", "URL"}.

Returns:

Schemed name for this Lookup. For example, "thread.pool.size" or "THREAD_POOL_SIZE" or "ThreadPoolSize" or whatever you decide is appropriate.

valueFromName

public String valueFromName(String name,
                            Class singletonType)

Description copied from class: Lookup

Perform the actual lookup characteristic of this Lookup.

Specified by:

valueFromName in class Lookup

Parameters:

name - The name of the value to look up, in this Lookup's naming scheme. For example, if the configuration interface's method name is "threadPoolSize" and nameFromFragments converts that to "thread.pool.size," then this method will receive "thread.pool.size" as the name to look up.

singletonType - This is the configuration interface that's being satisfied. Mostly you'll ignore this parameter, but you might find it useful for composing error messages or logging.

Returns:

The String value (always a String value) of the attribute being sought, or null if not available.