net.sf.sasl.language.placeholder.aop.resolver
Class HostPlaceholderResolver

java.lang.Object
  net.sf.sasl.language.placeholder.aop.resolver.HostPlaceholderResolver

All Implemented Interfaces:

IPlaceholderResolver

public class HostPlaceholderResolver
extends Object
implements IPlaceholderResolver

The placeholder resolver offers some placeholders to get access to local host informations.
hostName:
Returns the local host name.
hostAddress
Returns the local host address
canonicalHostName
Returns the canonical local host name.

Since:

0.0.1 (sasl-common-aspect-library)

Author:

Philipp Förmer

Constructor Summary

HostPlaceholderResolver()

Method Summary

Set<String>	getResolveablePlaceholders() Returns a set of all placeholder procedures names that can be resolved by the placeholder.
Object	resolve(String placeholderName, Object[] placeholderArguments, IEnvironment environment) Resolves the given placeholder under the passed interpreter environment.

Methods inherited from class java.lang.Object

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

Constructor Detail

HostPlaceholderResolver

public HostPlaceholderResolver()

Method Detail

getResolveablePlaceholders

public Set<String> getResolveablePlaceholders()

Description copied from interface: IPlaceholderResolver

Returns a set of all placeholder procedures names that can be resolved by the placeholder.

Specified by:

getResolveablePlaceholders in interface IPlaceholderResolver

Returns:

non null.

Since:

0.0.1 (sasl-common-aspect-library)

See Also:

IPlaceholderResolver.getResolveablePlaceholders()

resolve

public Object resolve(String placeholderName,
                      Object[] placeholderArguments,
                      IEnvironment environment)
               throws ResolveException

Description copied from interface: IPlaceholderResolver

Resolves the given placeholder under the passed interpreter environment. The placeholderArguments are static defined (in a placeholder script) or dynamic created parameters (by other placeholder calls) that are passed to the placeholder as procedure arguments.
The resolve method is only invoked for placeholders that the resolver defines that he offers them (IPlaceholderResolver.getResolveablePlaceholders()).

Specified by:

resolve in interface IPlaceholderResolver

Parameters:

placeholderName - non null.

placeholderArguments - non null.

environment - non null

Returns:

null or non null.

Throws:

ResolveException - if the placeholder could not get resolved, for example because the parameters mismatch, or the resolution is only successful for a specific target method execution phase.

Since:

0.0.1 (sasl-common-aspect-library)

See Also:

IPlaceholderResolver.resolve(java.lang.String, java.lang.Object[], net.sf.sasl.language.placeholder.aop.interpreter.IEnvironment)