org.apache.sshd.common.NamedResource Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
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/*
* 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.
*/
package org.apache.sshd.common;
import java.util.Collection;
import java.util.Comparator;
import java.util.List;
import java.util.function.Function;
import org.apache.sshd.common.util.GenericUtils;
/**
* @author Apache MINA SSHD Project
*/
@FunctionalInterface
public interface NamedResource {
/**
* Returns the value of {@link #getName()} - or {@code null} if argument is {@code null}
*/
Function NAME_EXTRACTOR = input -> input == null ? null : input.getName();
/**
* Compares 2 {@link NamedResource}s according to their {@link #getName()} value case insensitive
*/
Comparator BY_NAME_COMPARATOR = Comparator.comparing(NAME_EXTRACTOR, String.CASE_INSENSITIVE_ORDER);
/**
* @return The resource name
*/
String getName();
/**
* @param resources The named resources
* @return A {@link List} of all the factories names - in same order as they appear in the input
* collection
*/
static List getNameList(Collection resources) {
return GenericUtils.map(resources, NamedResource::getName);
}
/**
* @param resources list of available resources
* @return A comma separated list of factory names
*/
static String getNames(Collection resources) {
Collection nameList = getNameList(resources);
return GenericUtils.join(nameList, ',');
}
/**
* Remove the resource identified by the name from the list.
*
* @param The generic resource type
* @param name Name of the resource - ignored if {@code null}/empty
* @param c The {@link Comparator} to decide whether the {@link NamedResource#getName()} matches the
* name parameter
* @param resources The {@link NamedResource} to check - ignored if {@code null}/empty
* @return the removed resource from the list or {@code null} if not in the list
*/
static R removeByName(
String name, Comparator c, Collection resources) {
R r = findByName(name, c, resources);
if (r != null) {
resources.remove(r);
}
return r;
}
/**
* @param The generic resource type
* @param name Name of the resource - ignored if {@code null}/empty
* @param c The {@link Comparator} to decide whether the {@link NamedResource#getName()} matches the
* name parameter
* @param resources The {@link NamedResource} to check - ignored if {@code null}/empty
* @return The first resource whose name matches the parameter (by invoking
* {@link Comparator#compare(Object, Object)} - {@code null} if no match found
*/
static R findByName(
String name, Comparator c, Collection resources) {
return (GenericUtils.isEmpty(name) || GenericUtils.isEmpty(resources))
? null
: GenericUtils.stream(resources)
.filter(r -> c.compare(name, r.getName()) == 0)
.findFirst()
.orElse(null);
}
static R findFirstMatchByName(
Collection names, Comparator c, Collection resources) {
return (GenericUtils.isEmpty(names) || GenericUtils.isEmpty(resources))
? null
: GenericUtils.stream(resources)
.filter(r -> GenericUtils.findFirstMatchingMember(n -> c.compare(n, r.getName()) == 0, names) != null)
.findFirst()
.orElse(null);
}
/**
* Wraps a name value inside a {@link NamedResource}
*
* @param name The name value to wrap
* @return The wrapper instance
*/
static NamedResource ofName(String name) {
return new NamedResource() {
@Override
public String getName() {
return name;
}
@Override
public String toString() {
return getName();
}
};
}
static int safeCompareByName(NamedResource r1, NamedResource r2, boolean caseSensitive) {
String n1 = (r1 == null) ? null : r1.getName();
String n2 = (r2 == null) ? null : r2.getName();
return GenericUtils.safeCompare(n1, n2, caseSensitive);
}
}