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package org.apache.http.conn.scheme;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.http.HttpHost;
import org.apache.http.annotation.Contract;
import org.apache.http.annotation.ThreadingBehavior;
import org.apache.http.util.Args;

A set of supported protocol Schemes. Schemes are identified by lowercase names.
Since:4.0
Deprecated:(4.3) use Registry
/** * A set of supported protocol {@link Scheme}s. * Schemes are identified by lowercase names. * * @since 4.0 * * @deprecated (4.3) use {@link org.apache.http.config.Registry} */
@Contract(threading = ThreadingBehavior.SAFE) @Deprecated public final class SchemeRegistry {
The available schemes in this registry.
/** The available schemes in this registry. */
private final ConcurrentHashMap<String,Scheme> registeredSchemes;
Creates a new, empty scheme registry.
/** * Creates a new, empty scheme registry. */
public SchemeRegistry() { super(); registeredSchemes = new ConcurrentHashMap<String,Scheme>(); }
Obtains a scheme by name.
Params:
  • name – the name of the scheme to look up (in lowercase)
Throws:
Returns: the scheme, never null
/** * Obtains a scheme by name. * * @param name the name of the scheme to look up (in lowercase) * * @return the scheme, never {@code 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())
Params:
  • host – the host for which to obtain the scheme
Throws:
Returns:the scheme for the given host, never null
/** * Obtains the scheme for a host. * Convenience method for {@code getScheme(host.getSchemeName())} * * @param host the host for which to obtain the scheme * * @return the scheme for the given host, never {@code 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.
Params:
  • name – the name of the scheme to look up (in lowercase)
Returns: the scheme, or null if there is none by this name
/** * Obtains a scheme by name, if registered. * * @param name the name of the scheme to look up (in lowercase) * * @return the scheme, or * {@code 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(Locale.ENGLISH); final Scheme found = registeredSchemes.get(name); return found; }
Registers a scheme. The scheme can later be retrieved by its name using getScheme or get.
Params:
  • sch – the scheme to register
Returns: the scheme previously registered with that name, or null if none was registered
/** * 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 * {@code 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.
Params:
  • name – the name of the scheme to unregister (in lowercase)
Returns: the unregistered scheme, or null if there was none
/** * Unregisters a scheme. * * @param name the name of the scheme to unregister (in lowercase) * * @return the unregistered scheme, or * {@code 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(Locale.ENGLISH); final Scheme gone = registeredSchemes.remove(name); return gone; }
Obtains the names of the registered schemes.
Returns: List containing registered scheme names.
/** * Obtains the names of the registered schemes. * * @return List containing registered scheme names. */
public final List<String> getSchemeNames() { return new ArrayList<String>(registeredSchemes.keySet()); }
Populates the internal collection of registered protocol schemes with the content of the map passed as a parameter.
Params:
  • map – protocol schemes
/** * Populates the internal collection of registered {@link Scheme protocol schemes} * with the content of the map passed as a parameter. * * @param map protocol schemes */
public void setItems(final Map<String, Scheme> map) { if (map == null) { return; } registeredSchemes.clear(); registeredSchemes.putAll(map); } }