// =================== DO NOT EDIT THIS FILE ====================
   //  Generated by Modello Velocity from model.vm
   //  template, any modifications will be overwritten.
   // ==============================================================
   package org.apache.maven.api.model;
   
   import java.io.Serializable;
   import java.util.Collections;
   import java.util.HashMap;
  import java.util.Map;
  import java.util.Objects;
  import java.util.Optional;
  import java.util.Set;
  import java.util.stream.Collectors;
  import java.util.stream.Stream;
  import org.apache.maven.api.annotations.Experimental;
  import org.apache.maven.api.annotations.Generated;
  import org.apache.maven.api.annotations.Immutable;
  import org.apache.maven.api.annotations.Nonnull;
  import org.apache.maven.api.annotations.NotThreadSafe;
  import org.apache.maven.api.annotations.ThreadSafe;
  
  /**
   * The conditions within the build runtime environment which will trigger the
   * automatic inclusion of the build profile. Multiple conditions can be defined, which must
   * be all satisfied to activate the profile.
   * 
   * <p>In addition to the traditional activation mechanisms (JDK version, OS properties,
   * file existence, etc.), Maven now supports a powerful condition-based activation
   * through the {@code condition} field. This new mechanism allows for more flexible
   * and expressive profile activation rules.</p>
   * 
   * <h2>Condition Syntax</h2>
   * 
   * <p>The condition is specified as a string expression that can include various
   * functions, comparisons, and logical operators. Some key features include:</p>
   * 
   * <ul>
   * <li>Property access: {@code ${property.name}}</li>
   * <li>Comparison operators: {@code ==}, {@code !=}, {@code <}, {@code >}, {@code <=}, {@code >=}</li>
   * <li>Logical operators: {@code &&} (AND), {@code ||} (OR), {@code not(...)}</li>
   * <li>Functions: {@code exists(...)}, {@code missing(...)}, {@code matches(...)}, {@code inrange(...)}, and more</li>
   * </ul>
   * 
   * <h2>Supported Functions</h2>
   * 
   * <p>The following functions are supported in condition expressions:</p>
   * 
   * <ul>
   * <li>{@code length(string)}: Returns the length of the given string.</li>
   * <li>{@code upper(string)}: Converts the string to uppercase.</li>
   * <li>{@code lower(string)}: Converts the string to lowercase.</li>
   * <li>{@code substring(string, start, [end])}: Returns a substring of the given string.</li>
   * <li>{@code indexOf(string, substring)}: Returns the index of the first occurrence of substring in string, or -1 if not found.</li>
   * <li>{@code contains(string, substring)}: Checks if the string contains the substring.</li>
   * <li>{@code matches(string, regex)}: Checks if the string matches the given regular expression.</li>
   * <li>{@code not(condition)}: Negates the given condition.</li>
   * <li>{@code if(condition, trueValue, falseValue)}: Returns trueValue if the condition is true, falseValue otherwise.</li>
   * <li>{@code exists(path)}: Checks if a file matching the given glob pattern exists.</li>
   * <li>{@code missing(path)}: Checks if a file matching the given glob pattern does not exist.</li>
   * <li>{@code inrange(version, range)}: Checks if the given version is within the specified version range.</li>
   * </ul>
   * 
   * <h2>Supported properties</h2>
   * 
   * <p>The following properties are supported in expressions:</p>
   * 
   * <ul>
   * <li>`project.basedir`: The project directory</li>
   * <li>`project.rootDirectory`: The root directory of the project</li>
   * <li>`project.artifactId`: The artifactId of the project</li>
   * <li>`project.packaging`: The packaging of the project</li>
   * <li>user properties</li>
   * <li>system properties (including environment variables prefixed with `env.`)</li>
   * </ul>
   * 
   * <h2>Examples</h2>
   * 
   * <ul>
   * <li>JDK version range: {@code inrange(${java.version}, '[11,)')} (JDK 11 or higher)</li>
   * <li>OS check: {@code ${os.name} == 'windows'}</li>
   * <li>File existence: {@code exists('${project.basedir}/src/**}{@code /*.xsd')}</li>
   * <li>Property check: {@code ${my.property} != 'some-value'}</li>
   * <li>Regex matching: {@code matches(${os.version}, '.*aws')}</li>
   * <li>Complex condition: {@code ${os.name} == 'windows' && ${os.arch} != 'amd64' && inrange(${os.version}, '[10,)')}</li>
   * <li>String length check: {@code length(${user.name}) > 5}</li>
   * <li>Substring with version: {@code substring(${java.version}, 0, 3) == '1.8'}</li>
   * <li>Using indexOf: {@code indexOf(${java.version}, '-') > 0}</li>
   * <li>Conditional logic: {@code if(contains(${java.version}, '-'), substring(${java.version}, 0, indexOf(${java.version}, '-')), ${java.version})}</li>
   * </ul>
   * 
   * <p>This flexible condition mechanism allows for more precise control over profile
   * activation, enabling developers to create profiles that respond to a wide range of
   * environmental factors and project states.</p>
   */
  @Experimental
  @Generated @ThreadSafe @Immutable
  public class Activation
      implements Serializable, InputLocationTracker
 {
     /**
      * If set to true, this profile will be active unless another profile in this
      * pom is activated using the command line -P option or by one of that profile's
      * activators.
      */
     final boolean activeByDefault;
     /**
      * Specifies that this profile will be activated when a matching JDK is detected.
      * For example, {@code 1.4} only activates on JDKs versioned 1.4,
      * while {@code !1.4} matches any JDK that is not version 1.4. Ranges are supported too:
      * {@code [1.5,)} activates when the JDK is 1.5 minimum.
      */
     final String jdk;
     /**
      * Specifies that this profile will be activated when matching operating system
      * attributes are detected.
      */
     final ActivationOS os;
     /**
      * Specifies that this profile will be activated when this property is
      * specified.
      */
     final ActivationProperty property;
     /**
      * Specifies that this profile will be activated based on existence of a file.
      */
     final ActivationFile file;
     /**
      * Specifies that this profile will be activated based on the project's packaging.
      */
     final String packaging;
     /**
      * The condition which must be satisfied to activate the profile.
      */
     final String condition;
     /** Locations */
     final Map<Object, InputLocation> locations;
     /** Location tracking */
     final InputLocation importedFrom;
 
     /**
       * Constructor for this class, to be called from its subclasses and {@link Builder}.
       * @see Builder#build()
       */
     protected Activation(Builder builder) {
         this.activeByDefault = builder.activeByDefault != null ? builder.activeByDefault : (builder.base != null ? builder.base.activeByDefault : false);
         this.jdk = builder.jdk != null ? builder.jdk : (builder.base != null ? builder.base.jdk : null);
         this.os = builder.os != null ? builder.os : (builder.base != null ? builder.base.os : null);
         this.property = builder.property != null ? builder.property : (builder.base != null ? builder.base.property : null);
         this.file = builder.file != null ? builder.file : (builder.base != null ? builder.base.file : null);
         this.packaging = builder.packaging != null ? builder.packaging : (builder.base != null ? builder.base.packaging : null);
         this.condition = builder.condition != null ? builder.condition : (builder.base != null ? builder.base.condition : null);
         this.locations = builder.computeLocations();
         this.importedFrom = builder.importedFrom;
     }
 
     /**
      * If set to true, this profile will be active unless another profile in this
      * pom is activated using the command line -P option or by one of that profile's
      * activators.
      *
      * @return a {@code boolean}
      */
     public boolean isActiveByDefault() {
         return this.activeByDefault;
     }
 
     /**
      * Specifies that this profile will be activated when a matching JDK is detected.
      * For example, {@code 1.4} only activates on JDKs versioned 1.4,
      * while {@code !1.4} matches any JDK that is not version 1.4. Ranges are supported too:
      * {@code [1.5,)} activates when the JDK is 1.5 minimum.
      *
      * @return a {@code String}
      */
     public String getJdk() {
         return this.jdk;
     }
 
     /**
      * Specifies that this profile will be activated when matching operating system
      * attributes are detected.
      *
      * @return a {@code ActivationOS}
      */
     public ActivationOS getOs() {
         return this.os;
     }
 
     /**
      * Specifies that this profile will be activated when this property is
      * specified.
      *
      * @return a {@code ActivationProperty}
      */
     public ActivationProperty getProperty() {
         return this.property;
     }
 
     /**
      * Specifies that this profile will be activated based on existence of a file.
      *
      * @return a {@code ActivationFile}
      */
     public ActivationFile getFile() {
         return this.file;
     }
 
     /**
      * Specifies that this profile will be activated based on the project's packaging.
      *
      * @return a {@code String}
      */
     public String getPackaging() {
         return this.packaging;
     }
 
     /**
      * The condition which must be satisfied to activate the profile.
      *
      * @return a {@code String}
      */
     public String getCondition() {
         return this.condition;
     }
 
     /**
      * Gets the location of the specified field in the input source.
      */
     public InputLocation getLocation(Object key) {
         return locations.get(key);
     }
 
     /**
      * Gets the keys of the locations of the input source.
      */
     public Set<Object> getLocationKeys() {
         return locations.keySet();
     }
 
     protected Stream<Object> getLocationKeyStream() {
         return locations.keySet().stream();
     }
 
     /**
      * Gets the input location that caused this model to be read.
      */
     public InputLocation getImportedFrom()
     {
         return importedFrom;
     }
 
     /**
      * Creates a new builder with this object as the basis.
      *
      * @return a {@code Builder}
      */
     @Nonnull
     public Builder with() {
         return newBuilder(this);
     }
     /**
      * Creates a new {@code Activation} instance using the specified activeByDefault.
      *
      * @param activeByDefault the new {@code boolean} to use
      * @return a {@code Activation} with the specified activeByDefault
      */
     @Nonnull
     public Activation withActiveByDefault(boolean activeByDefault) {
         return newBuilder(this, true).activeByDefault(activeByDefault).build();
     }
     /**
      * Creates a new {@code Activation} instance using the specified jdk.
      *
      * @param jdk the new {@code String} to use
      * @return a {@code Activation} with the specified jdk
      */
     @Nonnull
     public Activation withJdk(String jdk) {
         return newBuilder(this, true).jdk(jdk).build();
     }
     /**
      * Creates a new {@code Activation} instance using the specified os.
      *
      * @param os the new {@code ActivationOS} to use
      * @return a {@code Activation} with the specified os
      */
     @Nonnull
     public Activation withOs(ActivationOS os) {
         return newBuilder(this, true).os(os).build();
     }
     /**
      * Creates a new {@code Activation} instance using the specified property.
      *
      * @param property the new {@code ActivationProperty} to use
      * @return a {@code Activation} with the specified property
      */
     @Nonnull
     public Activation withProperty(ActivationProperty property) {
         return newBuilder(this, true).property(property).build();
     }
     /**
      * Creates a new {@code Activation} instance using the specified file.
      *
      * @param file the new {@code ActivationFile} to use
      * @return a {@code Activation} with the specified file
      */
     @Nonnull
     public Activation withFile(ActivationFile file) {
         return newBuilder(this, true).file(file).build();
     }
     /**
      * Creates a new {@code Activation} instance using the specified packaging.
      *
      * @param packaging the new {@code String} to use
      * @return a {@code Activation} with the specified packaging
      */
     @Nonnull
     public Activation withPackaging(String packaging) {
         return newBuilder(this, true).packaging(packaging).build();
     }
     /**
      * Creates a new {@code Activation} instance using the specified condition.
      *
      * @param condition the new {@code String} to use
      * @return a {@code Activation} with the specified condition
      */
     @Nonnull
     public Activation withCondition(String condition) {
         return newBuilder(this, true).condition(condition).build();
     }
 
     /**
      * Creates a new {@code Activation} instance.
      * Equivalent to {@code newInstance(true)}.
      * @see #newInstance(boolean)
      *
      * @return a new {@code Activation}
      */
     @Nonnull
     public static Activation newInstance() {
         return newInstance(true);
     }
 
     /**
      * Creates a new {@code Activation} instance using default values or not.
      * Equivalent to {@code newBuilder(withDefaults).build()}.
      *
      * @param withDefaults the boolean indicating whether default values should be used
      * @return a new {@code Activation}
      */
     @Nonnull
     public static Activation newInstance(boolean withDefaults) {
         return newBuilder(withDefaults).build();
     }
 
     /**
      * Creates a new {@code Activation} builder instance.
      * Equivalent to {@code newBuilder(true)}.
      * @see #newBuilder(boolean)
      *
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder() {
         return newBuilder(true);
     }
 
     /**
      * Creates a new {@code Activation} builder instance using default values or not.
      *
      * @param withDefaults the boolean indicating whether default values should be used
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder(boolean withDefaults) {
         return new Builder(withDefaults);
     }
 
     /**
      * Creates a new {@code Activation} builder instance using the specified object as a basis.
      * Equivalent to {@code newBuilder(from, false)}.
      *
      * @param from the {@code Activation} instance to use as a basis
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder(Activation from) {
         return newBuilder(from, false);
     }
 
     /**
      * Creates a new {@code Activation} builder instance using the specified object as a basis.
      *
      * @param from the {@code Activation} instance to use as a basis
      * @param forceCopy the boolean indicating if a copy should be forced
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder(Activation from, boolean forceCopy) {
         return new Builder(from, forceCopy);
     }
 
     /**
      * Builder class used to create Activation instances.
      * @see #with()
      * @see #newBuilder()
      */
     @NotThreadSafe
     public static class Builder
     {
         Activation base;
         Boolean activeByDefault;
         String jdk;
         ActivationOS os;
         ActivationProperty property;
         ActivationFile file;
         String packaging;
         String condition;
         Map<Object, InputLocation> locations;
         InputLocation importedFrom;
 
         protected Builder(boolean withDefaults) {
             if (withDefaults) {
                 this.activeByDefault = false;
             }
         }
 
         protected Builder(Activation base, boolean forceCopy) {
             if (forceCopy) {
                 this.activeByDefault = base.activeByDefault;
                 this.jdk = base.jdk;
                 this.os = base.os;
                 this.property = base.property;
                 this.file = base.file;
                 this.packaging = base.packaging;
                 this.condition = base.condition;
                 this.locations = base.locations;
                 this.importedFrom = base.importedFrom;
             } else {
                 this.base = base;
             }
         }
 
         @Nonnull
         public Builder activeByDefault(boolean activeByDefault) {
             this.activeByDefault = activeByDefault;
             return this;
         }
 
         @Nonnull
         public Builder jdk(String jdk) {
             this.jdk = jdk;
             return this;
         }
 
         @Nonnull
         public Builder os(ActivationOS os) {
             this.os = os;
             return this;
         }
 
         @Nonnull
         public Builder property(ActivationProperty property) {
             this.property = property;
             return this;
         }
 
         @Nonnull
         public Builder file(ActivationFile file) {
             this.file = file;
             return this;
         }
 
         @Nonnull
         public Builder packaging(String packaging) {
             this.packaging = packaging;
             return this;
         }
 
         @Nonnull
         public Builder condition(String condition) {
             this.condition = condition;
             return this;
         }
 
 
         @Nonnull
         public Builder location(Object key, InputLocation location) {
             if (location != null) {
                 if (!(this.locations instanceof HashMap)) {
                     this.locations = this.locations != null ? new HashMap<>(this.locations) : new HashMap<>();
                 }
                 this.locations.put(key, location);
             }
             return this;
         }
 
         @Nonnull
         public Builder importedFrom(InputLocation importedFrom) {
             this.importedFrom = importedFrom;
             return this;
         }
 
         @Nonnull
         public Activation build() {
             // this method should not contain any logic other than creating (or reusing) an object in order to ease subclassing
             if (base != null
                     && (activeByDefault == null || activeByDefault == base.activeByDefault)
                     && (jdk == null || jdk == base.jdk)
                     && (os == null || os == base.os)
                     && (property == null || property == base.property)
                     && (file == null || file == base.file)
                     && (packaging == null || packaging == base.packaging)
                     && (condition == null || condition == base.condition)
             ) {
                 return base;
             }
             return new Activation(this);
         }
 
         Map<Object, InputLocation> computeLocations() {
             Map<Object, InputLocation> newlocs = locations != null ? locations : Map.of();
             Map<Object, InputLocation> oldlocs = base != null ? base.locations : Map.of();
             if (newlocs.isEmpty()) {
                 return Map.copyOf(oldlocs);
             }
             if (oldlocs.isEmpty()) {
                 return Map.copyOf(newlocs);
             }
             return Stream.concat(newlocs.entrySet().stream(), oldlocs.entrySet().stream())
                     // Keep value from newlocs in case of duplicates
                     .collect(Collectors.toUnmodifiableMap(Map.Entry::getKey, Map.Entry::getValue, (v1, v2) -> v1));
         }
     }
 
 }