https://github.com/spring-projects/spring-framework: Spring Core (Spring IO)
  • Juergen Hoeller 
/*
 * Copyright 2002-2018 the original author or authors.
 *
 * Licensed 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.springframework.core.env;

import java.util.function.Predicate;


Profile predicate that may be 
accepted by an Environment. 
May be implemented directly or, more usually, created using the of(...) factory method. 
Author:Phillip Webb
Since:5.1
/**
 * Profile predicate that may be {@linkplain Environment#acceptsProfiles(Profiles)
 * accepted} by an {@link Environment}.
 *
 * <p>May be implemented directly or, more usually, created using the
 * {@link #of(String...) of(...)} factory method.
 *
 * @author Phillip Webb
 * @since 5.1
 */
@FunctionalInterface
public interface Profiles {

	
Test if this Profiles instance matches against the given
active profiles predicate.

Params:
  • activeProfiles – predicate that tests whether a given profile is
currently active
/**
	 * Test if this {@code Profiles} instance <em>matches</em> against the given
	 * active profiles predicate.
	 * @param activeProfiles predicate that tests whether a given profile is
	 * currently active
	 */
	boolean matches(Predicate<String> activeProfiles);


	
Create a new Profiles instance that checks for matches against the given profile strings.

The returned instance will match if any one of the given profile strings matches. 
A profile string may contain a simple profile name (for example "production") or a profile expression. A profile expression allows for more complicated profile logic to be expressed, for example "production & cloud". 
The following operators are supported in profile expressions:

    

  • ! - A logical not of the profile
    • 

  • & - A logical and of the profiles
    • 

  • | - A logical or of the profiles
    • 



Please note that the & and | operators may not be mixed without using parentheses. For example "a & b | c" is not a valid expression; it must be expressed as "(a & b) | c" or "a & (b | c)". 
Params:
  • profiles – the profile strings to include
Returns:a new Profiles instance
/**
	 * Create a new {@link Profiles} instance that checks for matches against
	 * the given <em>profile strings</em>.
	 * <p>The returned instance will {@linkplain Profiles#matches(Predicate) match}
	 * if any one of the given profile strings matches.
	 * <p>A profile string may contain a simple profile name (for example
	 * {@code "production"}) or a profile expression. A profile expression allows
	 * for more complicated profile logic to be expressed, for example
	 * {@code "production & cloud"}.
	 * <p>The following operators are supported in profile expressions:
	 * <ul>
	 * <li>{@code !} - A logical <em>not</em> of the profile</li>
	 * <li>{@code &} - A logical <em>and</em> of the profiles</li>
	 * <li>{@code |} - A logical <em>or</em> of the profiles</li>
	 * </ul>
	 * <p>Please note that the {@code &} and {@code |} operators may not be mixed
	 * without using parentheses. For example {@code "a & b | c"} is not a valid
	 * expression; it must be expressed as {@code "(a & b) | c"} or
	 * {@code "a & (b | c)"}.
	 * @param profiles the <em>profile strings</em> to include
	 * @return a new {@link Profiles} instance
	 */
	static Profiles of(String... profiles) {
		return ProfilesParser.parse(profiles);
	}

}