org.apache.tapestry5.internal.services
Class MetaDataLocatorImpl

java.lang.Object
  org.apache.tapestry5.internal.services.MetaDataLocatorImpl

All Implemented Interfaces:

InvalidationListener, MetaDataLocator

public class MetaDataLocatorImpl
extends Object
implements MetaDataLocator, InvalidationListener

Constructor Summary

MetaDataLocatorImpl(SymbolSource symbolSource, TypeCoercer typeCoercer, Map<String,String> configuration)

Method Summary

<T> T	findMeta(String key, ComponentResources resources, Class<T> expectedType) Searches for the value for the corresponding key.
void	objectWasInvalidated() Invoked to indicate that some object is invalid.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetaDataLocatorImpl

public MetaDataLocatorImpl(SymbolSource symbolSource,
                           TypeCoercer typeCoercer,
                           Map<String,String> configuration)

Method Detail

objectWasInvalidated

public void objectWasInvalidated()

Description copied from interface: InvalidationListener

Invoked to indicate that some object is invalid. The receiver should clear its cache.

Specified by:

objectWasInvalidated in interface InvalidationListener

findMeta

public <T> T findMeta(String key,
                      ComponentResources resources,
                      Class<T> expectedType)

Description copied from interface: MetaDataLocator

Searches for the value for the corresponding key. The value, if located, will have symbols expanded, and will be type coerced to the desired type.

Specified by:

findMeta in interface MetaDataLocator

Parameters:

key - the key used to locate the meta data (case insensitive)

resources - the resources of the initial component used in the search

Returns:

the value if found (in the component, the component's container, etc. or via a folder default) or null if not found anywhere