org.apache.http.conn.scheme.SchemeRegistry Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of httpclient Show documentation
Show all versions of httpclient Show documentation
Apache HttpComponents Client
/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* registeredSchemes;
/**
* Creates a new, empty scheme registry.
*/
public SchemeRegistry() {
super();
registeredSchemes = new ConcurrentHashMap();
}
/**
* Obtains a scheme by name.
*
* @param name the name of the scheme to look up (in lowercase)
*
* @return the scheme, never null
*
* @throws IllegalStateException
* if the scheme with the given name is not registered
*/
public final Scheme getScheme(final String name) {
final Scheme found = get(name);
if (found == null) {
throw new IllegalStateException
("Scheme '"+name+"' not registered.");
}
return found;
}
/**
* Obtains the scheme for a host.
* Convenience method for getScheme(host.getSchemeName()) null
*
* @throws IllegalStateException
* if a scheme with the respective name is not registered
*/
public final Scheme getScheme(final HttpHost host) {
Args.notNull(host, "Host");
return getScheme(host.getSchemeName());
}
/**
* Obtains a scheme by name, if registered.
*
* @param name the name of the scheme to look up (in lowercase)
*
* @return the scheme, or
* null if there is none by this name
*/
public final Scheme get(final String name) {
Args.notNull(name, "Scheme name");
// leave it to the caller to use the correct name - all lowercase
//name = name.toLowerCase();
final Scheme found = registeredSchemes.get(name);
return found;
}
/**
* Registers a scheme.
* The scheme can later be retrieved by its name
* using {@link #getScheme(String) getScheme} or {@link #get get}.
*
* @param sch the scheme to register
*
* @return the scheme previously registered with that name, or
* null if none was registered
*/
public final Scheme register(final Scheme sch) {
Args.notNull(sch, "Scheme");
final Scheme old = registeredSchemes.put(sch.getName(), sch);
return old;
}
/**
* Unregisters a scheme.
*
* @param name the name of the scheme to unregister (in lowercase)
*
* @return the unregistered scheme, or
* null if there was none
*/
public final Scheme unregister(final String name) {
Args.notNull(name, "Scheme name");
// leave it to the caller to use the correct name - all lowercase
//name = name.toLowerCase();
final Scheme gone = registeredSchemes.remove(name);
return gone;
}
/**
* Obtains the names of the registered schemes.
*
* @return List containing registered scheme names.
*/
public final List