org.apache.juneau

Class UriResolver

java.lang.Object

org.apache.juneau.UriResolver

public class UriResolver
extends Object

Class used to create absolute and root-relative URIs based on your current URI 'location' and rules about how to make such resolutions.

Combines a UriContext instance with rules for resolution (UriResolution and relativity (UriRelativity) to define simple resolve(Object) and append(Appendable, Object) methods.

Three special protocols are used to represent context-root-relative, servlet-relative, and request-path-relative URIs: "context:/", "servlet:/", and "request:/".

The following list shows the protocols of URLs that can be resolved with this class:

• "foo://foo" - Absolute URI.
• "/foo" - Root-relative URI.
• "/" - Root URI.
• "context:/foo" - Context-root-relative URI.
• "context:/" - Context-root URI.
• "servlet:/foo" - Servlet-path-relative URI.
• "servlet:/" - Servlet-path URI.
• "request:/foo" - Request-path-relative URI.
• "request:/" - Request-path URI.
• "foo" - Path-info-relative URI.
• "" - Path-info URI.

Constructor Summary

Constructors

Constructor and Description
UriResolver(UriResolution resolution, UriRelativity relativity, UriContext uriContext) Constructor.

Method Summary

Modifier and Type	Method and Description
Appendable	append(Appendable a, Object o) Same as resolve(Object) except appends result to the specified appendable.
String	relativize(Object relativeTo, Object uri) Relativizes a URI.
String	resolve(Object uri) Converts the specified URI to absolute form based on values in this context.

Methods inherited from class java.lang.Object

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

Constructor Detail

UriResolver

public UriResolver(UriResolution resolution,
                   UriRelativity relativity,
                   UriContext uriContext)

Constructor.

Parameters:

resolution - Rule on how URIs should be resolved.

relativity - Rule on what relative URIs are relative to.

uriContext - Current URI context (i.e. the current URI 'location').

Method Detail

resolve

public String resolve(Object uri)

Converts the specified URI to absolute form based on values in this context.

Parameters:

uri - The URI to convert to absolute form. Can be any of the following:

• URI
• URL
• CharSequence

URI can be any of the following forms:

• "foo://foo" - Absolute URI.
• "/foo" - Root-relative URI.
• "/" - Root URI.
• "context:/foo" - Context-root-relative URI.
• "context:/" - Context-root URI.
• "servlet:/foo" - Servlet-path-relative URI.
• "servlet:/" - Servlet-path URI.
• "request:/foo" - Request-path-relative URI.
• "request:/" - Request-path URI.
• "foo" - Path-info-relative URI.
• "" - Path-info URI.

Returns:

The converted URI.

relativize

public String relativize(Object relativeTo,
                         Object uri)

Relativizes a URI.

Similar to URI.relativize(URI), except supports special protocols (e.g. "servlet:/") for both the relativeTo and uri parameters.

For example, to relativize a URI to its servlet-relative form:

// relativeUri == "path/foo" String relativeUri = resolver.relativize("servlet:/", "/context/servlet/path/foo");

Parameters:

relativeTo - The URI to relativize against.

uri - The URI to relativize.

Returns:

The relativized URI.

append

public Appendable append(Appendable a,
                         Object o)

Same as resolve(Object) except appends result to the specified appendable.

Parameters:

a - The appendable to append the URL to.

o - The URI to convert to absolute form.

Returns:

The same appendable passed in.