UriSupport (java-support 2.0.1 API)

java.lang.Object
- net.shibboleth.utilities.java.support.net.UriSupport

```
@Beta
public final class UriSupport
extends Object
```
Helper methods for building URIs and parsing some HTTP URL information.

Constructor Summary

Constructors
Modifier Constructor and Description

private UriSupport()
Constructor.

Constructors
Modifier	Constructor and Description
`private`	`UriSupport()` Constructor.

Method Summary

Methods
Modifier and Type	Method and Description
`static String`	`buildQuery(List<Pair<String,String>> parameters)` Builds an RFC-3968 encoded URL query component from a collection of parameters.
`static URI`	`fileURIFromAbsolutePath(String path)` Create a file: URI from an absolute path, dealing with the Windows, non leading "/" issue.
`static String`	`getRawQueryStringParameter(String queryString, String paramName)` Get the first raw (i.e.RFC-3968 encoded) query string component with the specified parameter name.
`static List<Pair<String,String>>`	`parseQueryString(String queryString)` Parses a RFC-3968 encoded query string in to a set of name/value pairs.
`static URI`	`setFragment(URI prototype, String fragment)` Sets the fragment of a URI.
`static URI`	`setHost(URI prototype, String host)` Sets the host of a URI.
`static URI`	`setPath(URI prototype, String path)` Sets the path of a URI.
`static URI`	`setPort(URI prototype, int port)` Sets the port of a URI.
`static URI`	`setQuery(URI prototype, List<Pair<String,String>> parameters)` Sets the query of a URI.
`static URI`	`setQuery(URI prototype, String query)` Sets the query of a URI.
`static URI`	`setScheme(URI prototype, String scheme)` Sets the scheme of a URI.
`static String`	`trimOrNullFragment(String fragment)` Trims an RFC-3968 encoded URL fragment component.
`static String`	`trimOrNullPath(String path)` Trims an RFC-3968 encoded URL path component.
`static String`	`trimOrNullQuery(String query)` Trims an RFC-3968 encoded URL query component.
`static String`	`urlDecode(String value)` URL Decode the given string.
`static String`	`urlEncode(String value)` URL Encode the given string.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - UriSupport
```
private UriSupport()
```
    Constructor.
- Method Detail
  - setFragment
```
public static URI setFragment(URI prototype,
              String fragment)
```
    Sets the fragment of a URI.
    
    Parameters:
    prototype - prototype URI that provides information other than the fragment
    fragment - fragment for the new URI
    
    Returns:
    new URI built from the prototype URI and the given fragment
  - setHost
```
public static URI setHost(URI prototype,
          String host)
```
    Sets the host of a URI.
    
    Parameters:
    prototype - prototype URI that provides information other than the host
    host - host for the new URI
    
    Returns:
    new URI built from the prototype URI and the given host
  - setPath
```
public static URI setPath(URI prototype,
          String path)
```
    Sets the path of a URI.
    
    Parameters:
    prototype - prototype URI that provides information other than the path
    path - path for the new URI
    
    Returns:
    new URI built from the prototype URI and the given path
  - setPort
```
public static URI setPort(URI prototype,
          int port)
```
    Sets the port of a URI.
    
    Parameters:
    prototype - prototype URI that provides information other than the port
    port - port for the new URI
    
    Returns:
    new URI built from the prototype URI and the given port
  - setQuery
```
public static URI setQuery(URI prototype,
           String query)
```
    Sets the query of a URI.
    WARNING: If the supplied query parameter names and/or values contain '%' characters (for example because they are already Base64-encoded), then the approach of using URI instances to work with the URI/URL may not be appropriate. Per its documentation, the URI constructors always encode '%' characters, which can lead to cases of double-encoding. For an alternative way of manipulating URL's see UrlBuilder.
    
    Parameters:
    prototype - prototype URI that provides information other than the query
    query - query for the new URI
    
    Returns:
    new URI built from the prototype URI and the given query
  - setQuery
```
public static URI setQuery(URI prototype,
           List<Pair<String,String>> parameters)
```
    Sets the query of a URI.
    WARNING: If the supplied query parameter names and/or values contain '%' characters (for example because they are already Base64-encoded), then the approach of using URI instances to work with the URI/URL may not be appropriate. Per its documentation, the URI constructors always encode '%' characters, which can lead to cases of double-encoding. For an alternative way of manipulating URL's see UrlBuilder.
    
    Parameters:
    prototype - prototype URI that provides information other than the query
    parameters - query parameters for the new URI
    
    Returns:
    new URI built from the prototype URI and the given query
  - setScheme
```
public static URI setScheme(URI prototype,
            String scheme)
```
    Sets the scheme of a URI.
    
    Parameters:
    prototype - prototype URI that provides information other than the scheme
    scheme - scheme for the new URI
    
    Returns:
    new URI built from the prototype URI and the given scheme
  - fileURIFromAbsolutePath
```
public static URI fileURIFromAbsolutePath(String path)
                                   throws URISyntaxException
```
    Create a file: URI from an absolute path, dealing with the Windows, non leading "/" issue.
    Windows absolute paths have a habit of starting with a "DosDeviceName" (such as C:\absolute\path if we blindly convert that to a file URI by prepending "file://", then we end up with a URI which has "C:" as the network segment. So if we need to have an absolute file path based URI (JAAS is the example) we call this method which hides the hideous implementation
    
    Parameters:
    path - the absolute file path to convert
    
    Returns:
    a suitable URI
    
    Throws:
    
    URISyntaxException - if the URI contructor fails
  - buildQuery
```
public static String buildQuery(List<Pair<String,String>> parameters)
```
    Builds an RFC-3968 encoded URL query component from a collection of parameters.
    
    Parameters:
    parameters - collection of parameters from which to build the URL query component, may be null or empty
    
    Returns:
    RFC-3968 encoded URL query or null if the parameter collection was null or empty
  - getRawQueryStringParameter
```
public static String getRawQueryStringParameter(String queryString,
                                String paramName)
```
    Get the first raw (i.e.RFC-3968 encoded) query string component with the specified parameter name. This method assumes the common query string format of one or more 'paramName=paramValue' pairs separate by '&'. The component will be returned as a string in the form 'paramName=paramValue' (minus the quotes).
    
    Parameters:
    queryString - the URL encoded HTTP URL query string
    paramName - the URL decoded name of the parameter to find
    
    Returns:
    the found component, or null if query string or param name is null/empty or the parameter is not found
  - parseQueryString
```
public static List<Pair<String,String>> parseQueryString(String queryString)
```
    Parses a RFC-3968 encoded query string in to a set of name/value pairs. This method assumes the common query string format of one or more 'paramName=paramValue' pairs separate by '&'. Both parameter names and values will be URL decoded. Parameters without values will be represented in the returned map as a key associated with the value null.
    
    Parameters:
    queryString - URL encoded query string
    
    Returns:
    the parameters from the query string, never null
  - trimOrNullPath
```
public static String trimOrNullPath(String path)
```
    Trims an RFC-3968 encoded URL path component. If the given path is null or empty then null is returned. If the given path ends with '?' then it is removed. If the given path ends with '#' then it is removed.
    
    Parameters:
    path - path to trim
    
    Returns:
    the trimmed path or null
  - trimOrNullQuery
```
public static String trimOrNullQuery(String query)
```
    Trims an RFC-3968 encoded URL query component. If the given query is null or empty then null is returned. If the given query starts with '?' then it is removed. If the given query ends with '#' then it is removed.
    
    Parameters:
    query - query to trim
    
    Returns:
    the trimmed query or null
  - trimOrNullFragment
```
public static String trimOrNullFragment(String fragment)
```
    Trims an RFC-3968 encoded URL fragment component. If the given fragment is null or empty then null is returned. If the given fragment starts with '#' then it is removed.
    
    Parameters:
    fragment - fragment to trim
    
    Returns:
    the trimmed fragment or null
  - urlDecode
```
public static String urlDecode(String value)
```
    URL Decode the given string.
    
    Parameters:
    value - the string to decode
    
    Returns:
    the decoded string
  - urlEncode
```
public static String urlEncode(String value)
```
    URL Encode the given string.
    
    Parameters:
    value - the string to encode
    
    Returns:
    the encoded string

Class UriSupport

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

UriSupport

Method Detail

setFragment

setHost

setPath

setPort

setQuery

setQuery

setScheme

fileURIFromAbsolutePath

buildQuery

getRawQueryStringParameter

parseQueryString

trimOrNullPath

trimOrNullQuery

trimOrNullFragment

urlDecode

urlEncode