Examples of URI

HTTPClient.URI
uthority>/<opaque> . Relative URI's of this type are only resolved as far as absolute paths - relative paths do not exist.
Ideally, java.net.URL should subclass URI. @see rfc-2396 @version 0.3-3 06/05/2001 @author Ronald Tschal�r @since V0.3-1
android.net.Uri
TODO
ch.ethz.iks.r_osgi.URI

URI is, well, an URI, as described in RFC 2396. Since java.net.URI exists only since version 1.4, R-OSGi uses its own URI class. This is a lightweight implementation, it does only as much as is needed for R-OSGi. Furthermore, certain protocol schemes do address resolution to avoid URI schizophrenia. @author Jan S. Rellermeyer, ETH Zurich
cli.System.Uri
client.net.sf.saxon.ce.tree.util.URI
etf.org/rfc/rfc2396.txt?number=2396">RFC 2396, and amended by RFC 2732.
Every absolute URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme-specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI. @version $Id: URI.java 447241 2006-09-18 05:12:57Z mrglavas $
com.adito.agent.client.util.URI
etf.org/rfc/rfc2396.txt?number=2396>. Every URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme- specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI.
com.adito.vfs.utils.URI
etf.org/rfc/rfc2396.txt?number=2396>. Every URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme- specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI.
com.arjuna.webservices.stax.URI
Representation of a URI @author kevin
com.dotcms.repackage.org.apache.commons.httpclient.URI
com.github.dynamicextensionsalfresco.webscripts.annotations.Uri
com.google.code.apis.rest.client.Util.Uri
com.iggroup.oss.restdoclet.doclet.type.Uri
URI container
com.sun.org.apache.xerces.internal.util.URI
etf.org/rfc/rfc2396.txt?number=2396">RFC 2396, and amended by RFC 2732.
Every absolute URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme-specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI. @version $Id: URI.java,v 1.2.6.1 2005/08/30 08:02:37 neerajbj Exp $
com.sun.org.apache.xml.internal.utils.URI
etf.org/rfc/rfc2396.txt?number=2396>. Every URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme- specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI.
com.sun.xml.wss.impl.misc.URI
etf.org/rfc/rfc2396.txt?number=2396>. Every URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme- specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI.

java.net.URI

etf.org/rfc/rfc2396.txt"">RFC 2396: Uniform Resource Identifiers (URI): Generic Syntax, amended by RFC 2732: Format for Literal IPv6 Addresses in URLs. The Literal IPv6 address format also supports scope_ids. The syntax and usage of scope_ids is described here. This class provides constructors for creating URI instances from their components or by parsing their string forms, methods for accessing the various components of an instance, and methods for normalizing, resolving, and relativizing URI instances. Instances of this class are immutable.

URI syntax and components

At the highest level a URI reference (hereinafter simply "URI") in string form has the syntax

[scheme:]scheme-specific-part[#fragment]

where square brackets [...] delineate optional components and the characters : and # stand for themselves.

An absolute URI specifies a scheme; a URI that is not absolute is said to be relative. URIs are also classified according to whether they are opaque or hierarchical.

An opaque URI is an absolute URI whose scheme-specific part does not begin with a slash character ('/'). Opaque URIs are not subject to further parsing. Some examples of opaque URIs are:

mailto:java-net@java.sun.com

news:comp.lang.java

urn:isbn:096139210x

A hierarchical URI is either an absolute URI whose scheme-specific part begins with a slash character, or a relative URI, that is, a URI that does not specify a scheme. Some examples of hierarchical URIs are:

http://java.sun.com/j2se/1.3/
docs/guide/collections/designfaq.html#28
../../../demo/jfc/SwingSet2/src/SwingSet2.java
file:///~/calendar

A hierarchical URI is subject to further parsing according to the syntax

[scheme:][//authority][path][?query][#fragment]

where the characters :, /, ?, and # stand for themselves. The scheme-specific part of a hierarchical URI consists of the characters between the scheme and fragment components.

The authority component of a hierarchical URI is, if specified, either server-based or registry-based. A server-based authority parses according to the familiar syntax

[user-info@]host[:port]

where the characters @ and : stand for themselves. Nearly all URI schemes currently in use are server-based. An authority component that does not parse in this way is considered to be registry-based.

The path component of a hierarchical URI is itself said to be absolute if it begins with a slash character ('/'); otherwise it is relative. The path of a hierarchical URI that is either absolute or specifies an authority is always absolute.

All told, then, a URI instance has the following nine components:

Component Type

scheme String

scheme-specific-part String

authority String

user-info String

host String

port int

path String

query String

fragment String

Component	Type
scheme	`String`
scheme-specific-part	`String`
authority	`String`
user-info	`String`
host	`String`
port	`int`
path	`String`
query	`String`
fragment	`String`

In a given instance any particular component is either undefined or defined with a distinct value. Undefined string components are represented by null, while undefined integer components are represented by -1. A string component may be defined to have the empty string as its value; this is not equivalent to that component being undefined.

Whether a particular component is or is not defined in an instance depends upon the type of the URI being represented. An absolute URI has a scheme component. An opaque URI has a scheme, a scheme-specific part, and possibly a fragment, but has no other components. A hierarchical URI always has a path (though it may be empty) and a scheme-specific-part (which at least contains the path), and may have any of the other components. If the authority component is present and is server-based then the host component will be defined and the user-information and port components may be defined.

Operations on URI instances

The key operations supported by this class are those of normalization, resolution, and relativization.

Normalization is the process of removing unnecessary "." and ".." segments from the path component of a hierarchical URI. Each "." segment is simply removed. A ".." segment is removed only if it is preceded by a non-".." segment. Normalization has no effect upon opaque URIs.

Resolution is the process of resolving one URI against another, base URI. The resulting URI is constructed from components of both URIs in the manner specified by RFC 2396, taking components from the base URI for those not specified in the original. For hierarchical URIs, the path of the original is resolved against the path of the base and then normalized. The result, for example, of resolving

docs/guide/collections/designfaq.html#28 (1)

against the base URI http://java.sun.com/j2se/1.3/ is the result URI

http://java.sun.com/j2se/1.3/docs/guide/collections/designfaq.html#28

Resolving the relative URI

../../../demo/jfc/SwingSet2/src/SwingSet2.java (2)

against this result yields, in turn,

http://java.sun.com/j2se/1.3/demo/jfc/SwingSet2/src/SwingSet2.java

Resolution of both absolute and relative URIs, and of both absolute and relative paths in the case of hierarchical URIs, is supported. Resolving the URI file:///~calendar against any other URI simply yields the original URI, since it is absolute. Resolving the relative URI (2) above against the relative base URI (1) yields the normalized, but still relative, URI

demo/jfc/SwingSet2/src/SwingSet2.java

Relativization, finally, is the inverse of resolution: For any two normalized URIs u and v,

u.relativize(u.resolve(v)).equals(v) and
u.resolve(u.relativize(v)).equals(v) .

This operation is often useful when constructing a document containing URIs that must be made relative to the base URI of the document wherever possible. For example, relativizing the URI

http://java.sun.com/j2se/1.3/docs/guide/index.html

against the base URI

http://java.sun.com/j2se/1.3

yields the relative URI docs/guide/index.html.

Character categories

RFC 2396 specifies precisely which characters are permitted in the various components of a URI reference. The following categories, most of which are taken from that specification, are used below to describe these constraints:

alpha The US-ASCII alphabetic characters, 'A' through 'Z' and 'a' through 'z'

digit The US-ASCII decimal digit characters, '0' through '9'

alphanum All alpha and digit characters

unreserved All alphanum characters together with those in the string "_-!.~'()*"

punct The characters in the string ",;:$&+="

reserved All punct characters together with those in the string "?/[]@"

escaped Escaped octets, that is, triplets consisting of the percent character ('%') followed by two hexadecimal digits ('0'-'9', 'A'-'F', and 'a'-'f')

other The Unicode characters that are not in the US-ASCII character set, are not control characters (according to the {@link java.lang.Character#isISOControl(char) Character.isISOControl}method), and are not space characters (according to the {@link java.lang.Character#isSpaceChar(char) Character.isSpaceChar}method) (Deviation from RFC 2396, which is limited to US-ASCII)

alpha	The US-ASCII alphabetic characters, `'A'` through `'Z'` and `'a'` through `'z'`
digit	The US-ASCII decimal digit characters, `'0'` through `'9'`
alphanum	All alpha and digit characters
unreserved	All alphanum characters together with those in the string `"_-!.~'()*"`
punct	The characters in the string `",;:$&+="`
reserved	All punct characters together with those in the string `"?/[]@"`
escaped	Escaped octets, that is, triplets consisting of the percent character (`'%'`) followed by two hexadecimal digits (`'0'`-`'9'`, `'A'`-`'F'`, and `'a'`-`'f'`)
other	The Unicode characters that are not in the US-ASCII character set, are not control characters (according to the {@link java.lang.Character#isISOControl(char) Character.isISOControl}method), and are not space characters (according to the {@link java.lang.Character#isSpaceChar(char) Character.isSpaceChar}method) (Deviation from RFC 2396, which is limited to US-ASCII)

The set of all legal URI characters consists of the unreserved, reserved, escaped, and other characters.

Escaped octets, quotation, encoding, and decoding

RFC 2396 allows escaped octets to appear in the user-info, path, query, and fragment components. Escaping serves two purposes in URIs:

To encode non-US-ASCII characters when a URI is required to conform strictly to RFC 2396 by not containing any other characters.
To quote characters that are otherwise illegal in a component. The user-info, path, query, and fragment components differ slightly in terms of which characters are considered legal and illegal.

These purposes are served in this class by three related operations:

A character is encoded by replacing it with the sequence of escaped octets that represent that character in the UTF-8 character set. The Euro currency symbol ('\u20AC'), for example, is encoded as "%E2%82%AC". (Deviation from RFC 2396, which does not specify any particular character set.)
An illegal character is quoted simply by encoding it. The space character, for example, is quoted by replacing it with "%20". UTF-8 contains US-ASCII, hence for US-ASCII characters this transformation has exactly the effect required by RFC 2396.
A sequence of escaped octets is decoded by replacing it with the sequence of characters that it represents in the UTF-8 character set. UTF-8 contains US-ASCII, hence decoding has the effect of de-quoting any quoted US-ASCII characters as well as that of decoding any encoded non-US-ASCII characters. If a decoding error occurs when decoding the escaped octets then the erroneous octets are replaced by '\uFFFD', the Unicode replacement character.

These operations are exposed in the constructors and methods of this class as follows:

The {@link #URI(java.lang.String) single-argumentconstructor} requires any illegal characters in its argument to bequoted and preserves any escaped octets and other characters that are present.
The {@link #URI(java.lang.String,java.lang.String,java.lang.String,int,java.lang.String,java.lang.String,java.lang.String) multi-argument constructors} quote illegal characters asrequired by the components in which they appear. The percent character ('%') is always quoted by these constructors. Any other characters are preserved.
The {@link #getRawUserInfo() getRawUserInfo}, {@link #getRawPath() getRawPath}, {@link #getRawQuery() getRawQuery}, {@link #getRawFragment() getRawFragment}, {@link #getRawAuthority() getRawAuthority}, and {@link #getRawSchemeSpecificPart() getRawSchemeSpecificPart} methods return thevalues of their corresponding components in raw form, without interpreting any escaped octets. The strings returned by these methods may contain both escaped octets and other characters, and will not contain any illegal characters.
The {@link #getUserInfo() getUserInfo}, {@link #getPath() getPath}, {@link #getQuery() getQuery}, {@link #getFragment() getFragment}, {@link #getAuthority() getAuthority}, and {@link #getSchemeSpecificPart() getSchemeSpecificPart} methods decode any escapedoctets in their corresponding components. The strings returned by these methods may contain both other characters and illegal characters, and will not contain any escaped octets.
The {@link #toString() toString} method returns a URI string withall necessary quotation but which may contain other characters.
The {@link #toASCIIString() toASCIIString} method returns a fullyquoted and encoded URI string that does not contain any other characters.

Identities

For any URI u, it is always the case that

new URI(u.toString()).equals(u) .

For any URI u that does not contain redundant syntax such as two slashes before an empty authority (as in file:///tmp/ ) or a colon following a host name but no port (as in http://java.sun.com: ), and that does not encode characters except those that must be quoted, the following identities also hold:

new URI(u.getScheme(), u.getSchemeSpecificPart(), u.getFragment()) .equals(u)

in all cases,

new URI(u.getScheme(), u.getUserInfo(), u.getAuthority(), u.getPath(), u.getQuery(), u.getFragment()) .equals(u)

if u is hierarchical, and

new URI(u.getScheme(), u.getUserInfo(), u.getHost(), u.getPort(), u.getPath(), u.getQuery(), u.getFragment()) .equals(u)

if u is hierarchical and has either no authority or a server-based authority.

URIs, URLs, and URNs

A URI is a uniform resource identifier while a URL is a uniform resource locator. Hence every URL is a URI, abstractly speaking, but not every URI is a URL. This is because there is another subcategory of URIs, uniform resource names (URNs), which name resources but do not specify how to locate them. The mailto, news, and isbn URIs shown above are examples of URNs.

The conceptual distinction between URIs and URLs is reflected in the differences between this class and the {@link URL} class.

An instance of this class represents a URI reference in the syntactic sense defined by RFC 2396. A URI may be either absolute or relative. A URI string is parsed according to the generic syntax without regard to the scheme, if any, that it specifies. No lookup of the host, if any, is performed, and no scheme-dependent stream handler is constructed. Equality, hashing, and comparison are defined strictly in terms of the character content of the instance. In other words, a URI instance is little more than a structured string that supports the syntactic, scheme-independent operations of comparison, normalization, resolution, and relativization.

An instance of the {@link URL} class, by contrast, represents thesyntactic components of a URL together with some of the information required to access the resource that it describes. A URL must be absolute, that is, it must always specify a scheme. A URL string is parsed according to its scheme. A stream handler is always established for a URL, and in fact it is impossible to create a URL instance for a scheme for which no handler is available. Equality and hashing depend upon both the scheme and the Internet address of the host, if any; comparison is not defined. In other words, a URL is a structured string that supports the syntactic operation of resolution as well as the network I/O operations of looking up the host and opening a connection to the specified resource. @version 1.48, 06/06/12 @author Mark Reinhold @since 1.4 @see RFC 2279: UTF-8, a transformation format of ISO 10646,
RFC 2373: IPv6 Addressing Architecture,
RFC 2396: Uniform Resource Identifiers (URI): Generic Syntax,
RFC 2732: Format for Literal IPv6 Addresses in URLs,
URISyntaxException

javax.servlet.sip.URI
javax.sip.address.URI
etf.org/rfc/rfc2396.txt>RFC 2396. @see TelURL @see SipURI @author BEA Systems, NIST @version 1.2
mf.org.apache.xerces.util.URI
etf.org/rfc/rfc2396.txt?number=2396">RFC 2396, and amended by RFC 2732.
Every absolute URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme-specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI. @version $Id: URI.java 712351 2008-11-08 05:45:12Z mrglavas $
net.lightbody.bmp.proxy.jetty.util.URI
net.rim.device.api.io.URI
org.apache.abdera.ext.serializer.annotation.URI
org.apache.axis.types.URI
etf.org/rfc/rfc2396.txt?number=2396">RFC 2396, and amended by RFC 2732.
Every absolute URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme-specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI. @version $Id: URI.java,v 1.5 2004/02/25 14:02:47 dims Exp $
org.apache.axis2.databinding.types.URI
etf.org/rfc/rfc2396.txt?number=2396">RFC 2396, and amended by RFC 2732.
Every absolute URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme-specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI.
org.apache.camel.cdi.Uri

org.apache.commons.httpclient.URI

uthority><path>?<query> - Syntax absoluteURI = scheme ":" ( hier_part | opaque_part ) hier_part = ( net_path | abs_path ) [ "?" query ] net_path = "//" authority [ abs_path ] abs_path = "/" path_segments

The following examples illustrate URI that are in common use.

 ftp://ftp.is.co.za/rfc/rfc1808.txt -- ftp scheme for File Transfer Protocol services gopher://spinaltap.micro.umn.edu/00/Weather/California/Los%20Angeles -- gopher scheme for Gopher and Gopher+ Protocol services http://www.math.uio.no/faq/compression-faq/part1.html -- http scheme for Hypertext Transfer Protocol services mailto:mduerst@ifi.unizh.ch -- mailto scheme for electronic mail addresses news:comp.infosystems.www.servers.unix -- news scheme for USENET news groups and articles telnet://melvyl.ucop.edu/ -- telnet scheme for interactive services via the TELNET Protocol

Please, notice that there are many modifications from URL(RFC 1738) and relative URL(RFC 1808).

The expressions for a URI

 For escaped URI forms - URI(char[]) // constructor - char[] getRawXxx() // method - String getEscapedXxx() // method - String toString() // method  For unescaped URI forms - URI(String) // constructor - String getXXX() // method

@author Sung-Gu @author Mike Bowler @version $Revision: 155418 $ $Date: 2002/03/14 15:14:01

org.apache.marmotta.client.model.rdf.URI
Add file description here!
Author: Sebastian Schaffert
org.apache.shindig.common.uri.Uri
.ietf.org/html/rfc3986">RFC 3986. Assumes that all url components are UTF-8 encoded.
org.apache.slide.common.Uri
This class manages the unique identifier of an object which is manipulated by Slide. @author Remy Maucherat @version $Revision: 1.17.2.1 $
org.apache.slide.projector.URI
org.apache.sling.resourceresolver.impl.helper.URI
uthority><path>?<query> - Syntax absoluteURI = scheme ":" ( hier_part | opaque_part ) hier_part = ( net_path | abs_path ) [ "?" query ] net_path = "//" authority [ abs_path ] abs_path = "/" path_segments
The following examples illustrate URI that are in common use.
```
 ftp://ftp.is.co.za/rfc/rfc1808.txt -- ftp scheme for File Transfer Protocol services gopher://spinaltap.micro.umn.edu/00/Weather/California/Los%20Angeles -- gopher scheme for Gopher and Gopher+ Protocol services http://www.math.uio.no/faq/compression-faq/part1.html -- http scheme for Hypertext Transfer Protocol services mailto:mduerst@ifi.unizh.ch -- mailto scheme for electronic mail addresses news:comp.infosystems.www.servers.unix -- news scheme for USENET news groups and articles telnet://melvyl.ucop.edu/ -- telnet scheme for interactive services via the TELNET Protocol 
```
Please, notice that there are many modifications from URL(RFC 1738) and relative URL(RFC 1808).
The expressions for a URI
```
 For escaped URI forms - URI(char[]) // constructor - char[] getRawXxx() // method - String getEscapedXxx() // method - String toString() // method  For unescaped URI forms - URI(String) // constructor - String getXXX() // method 
```
This class is a slightly modified version of the URI class distributed with Http Client 3.1. The changes involve removing dependencies to other Http Client classes and the Commons Codec library. To this avail the following methods have been added to this class:
- getBytes, getAsciiString, getString, getAsciiBytes has been copied from the Http Client 3.1 EncodingUtils class.
- encodeUrl and decodeUrl have been copied from the Commons Codec URLCodec class.
The signatures have been simplified and adapted to the use in this class. Also the exception thrown has been changed to be {@link URIException}.
org.apache.xerces.impl.validation.datatypes.eTypes.Data.uri
Pieces of a uri are available using getComponent @author Leonard C. Berman @author Jeffrey Rodriguez @version $Id: uri.java,v 1.1.2.1 2000/10/28 00:04:42 jeffreyr Exp $
org.apache.xerces.util.URI
etf.org/rfc/rfc2396.txt?number=2396>. Every URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme- specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI. @version $Id: URI.java,v 1.1.2.1 2000/10/05 01:59:28 andyc Exp $
org.apache.xerces.utils.URI
etf.org/rfc/rfc2396.txt?number=2396>. Every URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme- specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI. @version $Id: URI.java,v 1.3 2000/09/12 00:35:14 jeffreyr Exp $
org.apache.xml.utils.URI
etf.org/rfc/rfc2396.txt?number=2396>. Every URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme- specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI.
org.asynchttpclient.uri.Uri
org.browsermob.proxy.jetty.util.URI
URI Holder. This class assists with the decoding and encoding or HTTP URI's. It differs from the java.net.URL class as it does not provide communications ability, but it does assist with query string formatting.
ISO_8859_1 encoding is used by default for % encoded characters. This may be overridden with the org.mortbay.util.URI.charset system property. @see UrlEncoded @version $Id: URI.java,v 1.39 2006/01/04 13:55:31 gregwilkins Exp $ @author Greg Wilkins (gregw)
org.corrib.s3b.mbb.beans.rdf.URI
An RDF URI. @author Mariusz Cygan
org.eclipse.emf.common.util.URI
etf.org/rfc/rfc2396.txt">RFC 2396, with certain enhancements. A URI instance can be created by specifying values for its components, or by providing a single URI string, which is parsed into its components. Static factory methods whose names begin with "create" are used for both forms of object creation. No public or protected constructors are provided; this class can not be subclassed.
Like String, URI is an immutable class; a URI instance offers several by-value methods that return a new URI object based on its current state. Most useful, a relative URI can be {@link #resolve(URI) resolve}d against a base absolute URI -- the latter typically identifies the document in which the former appears. The inverse to this is {@link #deresolve(URI) deresolve}, which answers the question, "what relative URI will resolve, against the given base, to this absolute URI?"
In the RFC, much attention is focused on a hierarchical naming system used widely to locate resources via common protocols such as HTTP, FTP, and Gopher, and to identify files on a local file system. Accordingly, most of this class's functionality is for handling such URIs, which can be identified via {@link #isHierarchical isHierarchical}.
The primary enhancement beyond the RFC description is an optional device component. Instead of treating the device as just another segment in the path, it can be stored as a separate component (almost a sub-authority), with the root below it. For example, resolving /bar against file:///c:/foo would result in file:///c:/bar being returned. Also, you cannot take the parent of a device, so resolving .. against file:///c:/ would not yield file:///, as you might expect. This feature is useful when working with file-scheme URIs, as devices do not typically occur in protocol-based ones. A device-enabled URI is created by parsing a string with {@link #createURI(String) createURI}; if the first segment of the path ends with the : character, it is stored (including the colon) as the device, instead. Alternately, either the {@link #createHierarchicalURI(String,String,String,String,String) no-path}or the {@link #createHierarchicalURI(String,String,String,String[],String,String) absolute-path} form of createHierarchicalURI()can be used, in which a non-null device parameter can be specified.
The other enhancement provides support for the almost-hierarchical form used for files within archives, such as the JAR scheme, defined for the Java Platform in the documentation for {@link java.net.JarURLConnection}. By default, this support is enabled for absolute URIs with scheme equal to "jar", "zip", or "archive" (ignoring case), and is implemented by a hierarchical URI, whose authority includes the entire URI of the archive, up to and including the ! character. The URI of the archive must have no fragment. The whole archive URI must have no device and an absolute path. Special handling is supported for {@link #createURI(String) creating}, {@link #validArchiveAuthority validating}, {@link #devicePath getting the path}from, and {@link #toString() displaying} archive URIs. In all otheroperations, including {@link #resolve(URI) resolving} and {@link #deresolve(URI) deresolving}, they are handled like any ordinary URI. The schemes that identify archive URIs can be changed from their default by setting the org.eclipse.emf.common.util.URI.archiveSchemes system property. Multiple schemes should be space separated, and the test of whether a URI's scheme matches is always case-insensitive.
This implementation does not impose all of the restrictions on character validity that are specified in the RFC. Static methods whose names begin with "valid" are used to test whether a given string is valid value for the various URI components. Presently, these tests place no restrictions beyond what would have been required in order for {@link #createURI(String) createURI} to have parsed them correctly from a singleURI string. If necessary in the future, these tests may be made more strict, to better conform to the RFC.
Another group of static methods, whose names begin with "encode", use percent escaping to encode any characters that are not permitted in the various URI components. Another static method is provided to {@link #decode decode} encoded strings. An escaped character is represented asa percent symbol (%), followed by two hex digits that specify the character code. These encoding methods are more strict than the validation methods described above. They ensure validity according to the RFC, with one exception: non-ASCII characters.
The RFC allows only characters that can be mapped to 7-bit US-ASCII representations. Non-ASCII, single-byte characters can be used only via percent escaping, as described above. This implementation uses Java's Unicode char and String representations, and makes no attempt to encode characters 0xA0 and above. Characters in the range 0x80-0x9F are still escaped. In this respect, EMF's notion of a URI is actually more like an IRI (Internationalized Resource Identifier), for which an RFC is now in draft form.
Finally, note the difference between a null parameter to the static factory methods and an empty string. The former signifies the absence of a given URI component, while the latter simply makes the component blank. This can have a significant effect when resolving. For example, consider the following two URIs: /bar (with no authority) and ///bar (with a blank authority). Imagine resolving them against a base with an authority, such as http://www.eclipse.org/. The former case will yield http://www.eclipse.org/bar, as the base authority will be preserved. In the latter case, the empty authority will override the base authority, resulting in http:///bar!
org.eclipse.wst.common.uriresolver.internal.URI
org.eweb4j.mvc.config.bean.Uri
org.exolab.jms.net.uri.URI
etf.org/rfc/rfc2396.txt?number=2396>. Every URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme- specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI. @version $Id: URI.java,v 1.1 2004/11/26 01:51:06 tanderson Exp $
org.gedcomx.common.URI
org.jwat.common.Uri
Custom URI parser/validation based on rfc3986. An URI is split into sub components which are in turn validated. The overall reason for implementing this class is the lack of support for %uxxxx encoding which is not part of the specification but nevertheless needs to be validated since they are in use. Other non standard characters are also used in the wild. This implementation is not a complete substitute for the JDK version. It does not yet implement the following methods. - normalize() - parseServerAuthority() - relativize(URI uri) - resolve(String str) - resolve(URI uri) - toASCIIString() @author nicl
org.librdf.redland.URI
org.mortbay.util.URI
org.ontoware.rdf2go.model.node.URI
Interface for URI implementations. Implementations must have valid implementations of
```
 public boolean equals(Object other); public int hashCode(); 
```
The method "public String toString();" is expected to return a valid URI String @author voelkel
org.openqa.jetty.util.URI
URI Holder. This class assists with the decoding and encoding or HTTP URI's. It differs from the java.net.URL class as it does not provide communications ability, but it does assist with query string formatting.
ISO_8859_1 encoding is used by default for % encoded characters. This may be overridden with the org.openqa.jetty.util.URI.charset system property. @see UrlEncoded @version $Id: URI.java,v 1.39 2006/01/04 13:55:31 gregwilkins Exp $ @author Greg Wilkins (gregw)
org.openrdf.model.URI
A URI. A URI consists of a namespace and a local name, which are derived from a URI string by splitting it in two using the following algorithm:
- Split after the first occurrence of the '#' character,
- If this fails, split after the last occurrence of the '/' character,
- If this fails, split after the last occurrence of the ':' character.
The last step should never fail as every legal (full) URI contains at least one ':' character to seperate the scheme from the rest of the URI. The implementation should check this upon object creation. @see URIUtil#getLocalNameIndex(String)
org.openrdf.rio.rdfjson.RDFJSONUtility.URI
org.opensaml.artifact.URI
org.wikier.trioo.jtrioo.annotations.URI
org.wymiwyg.commons.util.URI

Examples of org.apache.xerces.utils.URI

     */
    public Object validate(String content, Object state) 
    throws InvalidDatatypeValueException
    {
        StringTokenizer parsedList = null;
        URI             uriContent = null;


        if ( (fFacetsDefined & DatatypeValidator.FACET_PATTERN ) != 0 ) {
            if ( fRegex == null || fRegex.matches( content) == false )
                throw new InvalidDatatypeValueException("Value '"+content+
                                                        "' does not match regular expression facet" + fPattern );
        }


           
        try {
            if( content.trim().length() != 0 ) //Validate non null URI 
                uriContent = new URI( content );
            //else it is valid anyway
        } catch (  URI.MalformedURIException ex ) {
            throw new InvalidDatatypeValueException("Value '"+content+
                                                                        "' is a Malformed URI ");

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Examples of org.apache.xml.utils.URI

         boolean switchBackProxy = ((oldProxySet != null)
                                    && (oldProxyHost != null)
                                    && (oldProxyPort != null));


         // calculate new URI
         URI uriNew = getNewURI(uri.getNodeValue(), BaseURI);


         // if the URI contains a fragment, ignore it
         URI uriNewNoFrag = new URI(uriNew);


         uriNewNoFrag.setFragment(null);


         URL url = new URL(uriNewNoFrag.toString());
         URLConnection urlConnection = url.openConnection();


         {


            // set proxy pass

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Examples of org.asynchttpclient.uri.Uri


    private static String computeRealmURI(Realm realm) {
        if (realm.isTargetProxy()) {
            return "/";
        } else {
            Uri uri = realm.getUri();
            if (realm.isUseAbsoluteURI()) {
                return realm.isOmitQuery() && MiscUtils.isNonEmpty(uri.getQuery()) ? uri.withNewQuery(null).toUrl() : uri.toUrl();
            } else {
                String path = getNonEmptyPath(uri);
                return realm.isOmitQuery() || !MiscUtils.isNonEmpty(uri.getQuery()) ? path : path + "?" + uri.getQuery();
            }
        }
    }

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Examples of org.browsermob.proxy.jetty.util.URI

        setTunnelTimeoutMs(300000);
    }


    @Override
    public void handleConnect(String pathInContext, String pathParams, HttpRequest request, HttpResponse response) throws HttpException, IOException {
        URI uri = request.getURI();
        String original = uri.toString();
        String host = original;
        String port = null;
        int colon = original.indexOf(':');
        if (colon != -1) {
            host = original.substring(0, colon);
            port = original.substring(colon + 1);
        }
        String altHost = httpClient.remappedHost(host);
        if (altHost != null) {
            if (port != null) {
                uri.setURI(altHost + ":" + port);
            } else {
                uri.setURI(altHost);
            }
        }


        super.handleConnect(pathInContext, pathParams, request, response);
    }

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Examples of org.corrib.s3b.mbb.beans.rdf.URI

  }
  
  protected static Resource getResource(org.openrdf.model.Resource resource) {
    if (resource instanceof org.openrdf.model.URI) {
      org.openrdf.model.URI uri = (org.openrdf.model.URI)resource;
      return new URI(uri.getURI());
    } else if (resource instanceof org.openrdf.model.BNode) {
      org.openrdf.model.BNode bNode = (org.openrdf.model.BNode)resource;
      return new BNode(bNode.getID());
    } else {
      return null;

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Examples of org.eclipse.emf.common.util.URI

                        uri,
                        FILE_PREFIX,
                        filePrefixWithSlash);
            }
        }
        final URI resourceUri = URI.createURI(uri);
        if (resourceUri == null)
        {
            throw new RepositoryFacadeException("The path '" + uri + "' is not a valid URI");
        }
        return resourceUri;

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Examples of org.eclipse.wst.common.uriresolver.internal.URI

      }


      // Make sure the key is a fully qualified URI in the cases
      // where the key type is "System ID" or "Schema location"
      if ((keyField.getText().length() > 0) && (getKeyType() == ICatalogEntry.ENTRY_TYPE_SYSTEM)) {
        URI uri = URI.createURI(keyField.getText());
        if (uri.scheme() == null) {
          warningMessage = XMLCatalogMessages.UI_WARNING_SHOULD_BE_FULLY_QUALIFIED_URI;
        }
      }


      if ((errorMessage == null) && checkboxButton.getSelection() && (webAddressField.getText().trim().length() == 0)) {

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Examples of org.eweb4j.mvc.config.bean.Uri


      List<Uri> uris = inter.getUri();
      final int size = uris.size();
      int result = 1;
      for (int i = 0; i < size; i++) {
        Uri u = uris.get(i);
        String type = u.getType();
        String value = u.getValue();
        int c = 1;


        if ("start".equalsIgnoreCase(type) && uri.startsWith(value))
          // 以url开头
          ;

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Examples of org.exolab.jms.net.uri.URI

     * @throws Exception for any error
     */
    protected ConnectionRequestInfo getManagedConnectionRequestInfo()
            throws Exception {
        TCPSRequestInfo info =
                new TCPSRequestInfo(new URI("tcps://localhost:5099"));
        SSLProperties properties =
                SSLUtil.getSSLProperties("test.keystore", "secret");
        info.setSSLProperties(properties);
        return info;
    }

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Examples of org.gedcomx.common.URI

   * @param gedxPersonId the identifier of the GEDCOM X person
   * @return a ResourceReference instance for the person entry of the identified person
   */
  public static ResourceReference toReference(String gedxPersonId) {
    ResourceReference reference = new ResourceReference();
    reference.setResource( new URI(getPersonReference(gedxPersonId)));
    return reference;
  }

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