Java tutorial
package org.apache.maven.model.profile; /* * 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. */ import java.io.File; import java.util.Collections; import java.util.Enumeration; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Properties; /** * Describes the environmental context used to determine the activation status of profiles. * * @author Benjamin Bentmann */ public class DefaultProfileActivationContext implements ProfileActivationContext { private List<String> activeProfileIds = Collections.emptyList(); private List<String> inactiveProfileIds = Collections.emptyList(); private Map<String, String> systemProperties = Collections.emptyMap(); private Map<String, String> userProperties = Collections.emptyMap(); private Map<String, String> projectProperties = Collections.emptyMap(); private File projectDirectory; @Override public List<String> getActiveProfileIds() { return activeProfileIds; } /** * Sets the identifiers of those profiles that should be activated by explicit demand. * * @param activeProfileIds The identifiers of those profiles to activate, may be {@code null}. * @return This context, never {@code null}. */ public DefaultProfileActivationContext setActiveProfileIds(List<String> activeProfileIds) { if (activeProfileIds != null) { this.activeProfileIds = Collections.unmodifiableList(activeProfileIds); } else { this.activeProfileIds = Collections.emptyList(); } return this; } @Override public List<String> getInactiveProfileIds() { return inactiveProfileIds; } /** * Sets the identifiers of those profiles that should be deactivated by explicit demand. * * @param inactiveProfileIds The identifiers of those profiles to deactivate, may be {@code null}. * @return This context, never {@code null}. */ public DefaultProfileActivationContext setInactiveProfileIds(List<String> inactiveProfileIds) { if (inactiveProfileIds != null) { this.inactiveProfileIds = Collections.unmodifiableList(inactiveProfileIds); } else { this.inactiveProfileIds = Collections.emptyList(); } return this; } @Override public Map<String, String> getSystemProperties() { return systemProperties; } /** * Sets the system properties to use for interpolation and profile activation. The system properties are collected * from the runtime environment like {@link System#getProperties()} and environment variables. * * @param systemProperties The system properties, may be {@code null}. * @return This context, never {@code null}. */ @SuppressWarnings("unchecked") public DefaultProfileActivationContext setSystemProperties(Properties systemProperties) { if (systemProperties != null) { this.systemProperties = Collections.unmodifiableMap((Map) systemProperties); } else { this.systemProperties = Collections.emptyMap(); } return this; } /** * Sets the system properties to use for interpolation and profile activation. The system properties are collected * from the runtime environment like {@link System#getProperties()} and environment variables. * * @param systemProperties The system properties, may be {@code null}. * @return This context, never {@code null}. */ public DefaultProfileActivationContext setSystemProperties(Map<String, String> systemProperties) { if (systemProperties != null) { this.systemProperties = Collections.unmodifiableMap(systemProperties); } else { this.systemProperties = Collections.emptyMap(); } return this; } @Override public Map<String, String> getUserProperties() { return userProperties; } /** * Sets the user properties to use for interpolation and profile activation. The user properties have been * configured directly by the user on his discretion, e.g. via the {@code -Dkey=value} parameter on the command * line. * * @param userProperties The user properties, may be {@code null}. * @return This context, never {@code null}. */ @SuppressWarnings("unchecked") public DefaultProfileActivationContext setUserProperties(Properties userProperties) { if (userProperties != null) { this.userProperties = Collections.unmodifiableMap((Map) userProperties); } else { this.userProperties = Collections.emptyMap(); } return this; } /** * Sets the user properties to use for interpolation and profile activation. The user properties have been * configured directly by the user on his discretion, e.g. via the {@code -Dkey=value} parameter on the command * line. * * @param userProperties The user properties, may be {@code null}. * @return This context, never {@code null}. */ public DefaultProfileActivationContext setUserProperties(Map<String, String> userProperties) { if (userProperties != null) { this.userProperties = Collections.unmodifiableMap(userProperties); } else { this.userProperties = Collections.emptyMap(); } return this; } @Override public File getProjectDirectory() { return projectDirectory; } /** * Sets the base directory of the current project. * * @param projectDirectory The base directory of the current project, may be {@code null} if profile activation * happens in the context of metadata retrieval rather than project building. * @return This context, never {@code null}. */ public DefaultProfileActivationContext setProjectDirectory(File projectDirectory) { this.projectDirectory = projectDirectory; return this; } @Override public Map<String, String> getProjectProperties() { return projectProperties; } public DefaultProfileActivationContext setProjectProperties(Properties projectProperties) { if (projectProperties != null) { this.projectProperties = Collections.unmodifiableMap(toMap(projectProperties)); } else { this.projectProperties = Collections.emptyMap(); } return this; } private Map<String, String> toMap(Properties properties) { if (properties == null) { return Collections.emptyMap(); } Map<String, String> map = new HashMap<>(); Enumeration keys = properties.keys(); while (keys.hasMoreElements()) { String key = (String) keys.nextElement(); map.put(key, properties.getProperty(key)); } return map; } }