com.predic8.membrane.core.resolver

Interface Resolver

All Known Subinterfaces:

SchemaResolver

All Known Implementing Classes:

ClasspathSchemaResolver, EtcdResolver, FileSchemaResolver, HTTPSchemaResolver, ResolverMap

public interface Resolver

Method Summary

Modifier and Type	Method and Description
List<String>	getChildren(String url) Returns the list of child resources of the resource identified by the URL.
long	getTimestamp(String url) Returns the modification date of the resource.
void	observeChange(String url, Consumer<InputStream> consumer) Calls the consumer when the InputStream for the requested URL changes.
InputStream	resolve(String url) Returns the InputStream for the requested URL.

Method Detail

resolve

InputStream resolve(String url)
             throws ResourceRetrievalException

Returns the InputStream for the requested URL.

Throws:

ResourceRetrievalException - if the resource identified by the URL does not exist.

observeChange

void observeChange(String url,
                   Consumer<InputStream> consumer)
            throws ResourceRetrievalException

Calls the consumer when the InputStream for the requested URL changes.

Throws:

ResourceRetrievalException - if the resource identified by the URL does not exist.

getChildren

List<String> getChildren(String url)
                  throws FileNotFoundException

Returns the list of child resources of the resource identified by the URL. For example, a list of filenames in the directory identified by the URL.

Returns:

null if the resolver does not support this functionality.

Throws:

FileNotFoundException - if the resource identified by the URL does not exist.

getTimestamp

long getTimestamp(String url)
           throws FileNotFoundException

Returns the modification date of the resource.

Returns:

0 if the resolver does not support this functionality.

Throws:

FileNotFoundException - if the resource identified by the URL does not exist.