implemented the session facade design pattern issue #1278

.editorconfig

@@ -38,7 +38,7 @@ ij_formatter_off_tag = @formatter:off
 ij_formatter_on_tag = @formatter:on
 ij_formatter_tags_enabled = true
 ij_smart_tabs = false
-ij_visual_guides = 
+ij_visual_guides =
 ij_wrap_on_typing = false
 
 [*.java]
@@ -94,7 +94,7 @@ ij_java_blank_lines_before_package = 1
 ij_java_block_brace_style = end_of_line
 ij_java_block_comment_add_space = false
 ij_java_block_comment_at_first_column = true
-ij_java_builder_methods = 
+ij_java_builder_methods =
 ij_java_call_parameters_new_line_after_left_paren = false
 ij_java_call_parameters_right_paren_on_new_line = false
 ij_java_call_parameters_wrap = normal
@@ -128,31 +128,31 @@ ij_java_doc_param_description_on_new_line = false
 ij_java_doc_preserve_line_breaks = false
 ij_java_doc_use_throws_not_exception_tag = true
 ij_java_else_on_new_line = false
-ij_java_entity_dd_prefix = 
+ij_java_entity_dd_prefix =
 ij_java_entity_dd_suffix = EJB
-ij_java_entity_eb_prefix = 
+ij_java_entity_eb_prefix =
 ij_java_entity_eb_suffix = Bean
-ij_java_entity_hi_prefix = 
+ij_java_entity_hi_prefix =
 ij_java_entity_hi_suffix = Home
 ij_java_entity_lhi_prefix = Local
 ij_java_entity_lhi_suffix = Home
 ij_java_entity_li_prefix = Local
-ij_java_entity_li_suffix = 
+ij_java_entity_li_suffix =
 ij_java_entity_pk_class = java.lang.String
-ij_java_entity_ri_prefix = 
-ij_java_entity_ri_suffix = 
-ij_java_entity_vo_prefix = 
+ij_java_entity_ri_prefix =
+ij_java_entity_ri_suffix =
+ij_java_entity_vo_prefix =
 ij_java_entity_vo_suffix = VO
 ij_java_enum_constants_wrap = normal
 ij_java_extends_keyword_wrap = normal
 ij_java_extends_list_wrap = normal
 ij_java_field_annotation_wrap = split_into_lines
-ij_java_field_name_prefix = 
-ij_java_field_name_suffix = 
-ij_java_filter_class_prefix = 
-ij_java_filter_class_suffix = 
-ij_java_filter_dd_prefix = 
-ij_java_filter_dd_suffix = 
+ij_java_field_name_prefix =
+ij_java_field_name_suffix =
+ij_java_filter_class_prefix =
+ij_java_filter_class_suffix =
+ij_java_filter_dd_prefix =
+ij_java_filter_dd_suffix =
 ij_java_finally_on_new_line = false
 ij_java_for_brace_force = always
 ij_java_for_statement_new_line_after_left_paren = false
@@ -161,7 +161,7 @@ ij_java_for_statement_wrap = normal
 ij_java_generate_final_locals = false
 ij_java_generate_final_parameters = false
 ij_java_if_brace_force = always
-ij_java_imports_layout = $*,|,*
+ij_java_imports_layout = $*, |, *
 ij_java_indent_case_from_switch = true
 ij_java_insert_inner_class_imports = false
 ij_java_insert_override_annotation = true
@@ -186,13 +186,13 @@ ij_java_layout_static_imports_separately = true
 ij_java_line_comment_add_space = false
 ij_java_line_comment_add_space_on_reformat = false
 ij_java_line_comment_at_first_column = true
-ij_java_listener_class_prefix = 
-ij_java_listener_class_suffix = 
-ij_java_local_variable_name_prefix = 
-ij_java_local_variable_name_suffix = 
-ij_java_message_dd_prefix = 
+ij_java_listener_class_prefix =
+ij_java_listener_class_suffix =
+ij_java_local_variable_name_prefix =
+ij_java_local_variable_name_suffix =
+ij_java_message_dd_prefix =
 ij_java_message_dd_suffix = EJB
-ij_java_message_eb_prefix = 
+ij_java_message_eb_prefix =
 ij_java_message_eb_suffix = Bean
 ij_java_method_annotation_wrap = split_into_lines
 ij_java_method_brace_style = end_of_line
@@ -206,17 +206,17 @@ ij_java_names_count_to_use_import_on_demand = 999
 ij_java_new_line_after_lparen_in_annotation = false
 ij_java_new_line_after_lparen_in_deconstruction_pattern = true
 ij_java_new_line_after_lparen_in_record_header = false
-ij_java_packages_to_use_import_on_demand = 
+ij_java_packages_to_use_import_on_demand =
 ij_java_parameter_annotation_wrap = normal
-ij_java_parameter_name_prefix = 
-ij_java_parameter_name_suffix = 
+ij_java_parameter_name_prefix =
+ij_java_parameter_name_suffix =
 ij_java_parentheses_expression_new_line_after_left_paren = false
 ij_java_parentheses_expression_right_paren_on_new_line = false
 ij_java_place_assignment_sign_on_next_line = false
 ij_java_prefer_longer_names = true
 ij_java_prefer_parameters_wrap = false
 ij_java_record_components_wrap = normal
-ij_java_repeat_annotations = 
+ij_java_repeat_annotations =
 ij_java_repeat_synchronized = true
 ij_java_replace_instanceof_and_cast = false
 ij_java_replace_null_check = true
@@ -227,23 +227,23 @@ ij_java_resource_list_wrap = normal
 ij_java_rparen_on_new_line_in_annotation = false
 ij_java_rparen_on_new_line_in_deconstruction_pattern = true
 ij_java_rparen_on_new_line_in_record_header = false
-ij_java_servlet_class_prefix = 
-ij_java_servlet_class_suffix = 
-ij_java_servlet_dd_prefix = 
-ij_java_servlet_dd_suffix = 
-ij_java_session_dd_prefix = 
+ij_java_servlet_class_prefix =
+ij_java_servlet_class_suffix =
+ij_java_servlet_dd_prefix =
+ij_java_servlet_dd_suffix =
+ij_java_session_dd_prefix =
 ij_java_session_dd_suffix = EJB
-ij_java_session_eb_prefix = 
+ij_java_session_eb_prefix =
 ij_java_session_eb_suffix = Bean
-ij_java_session_hi_prefix = 
+ij_java_session_hi_prefix =
 ij_java_session_hi_suffix = Home
 ij_java_session_lhi_prefix = Local
 ij_java_session_lhi_suffix = Home
 ij_java_session_li_prefix = Local
-ij_java_session_li_suffix = 
-ij_java_session_ri_prefix = 
-ij_java_session_ri_suffix = 
-ij_java_session_si_prefix = 
+ij_java_session_li_suffix =
+ij_java_session_ri_prefix =
+ij_java_session_ri_suffix =
+ij_java_session_si_prefix =
 ij_java_session_si_suffix = Service
 ij_java_space_after_closing_angle_bracket_in_type_argument = false
 ij_java_space_after_colon = true
@@ -324,13 +324,13 @@ ij_java_spaces_within_synchronized_parentheses = false
 ij_java_spaces_within_try_parentheses = false
 ij_java_spaces_within_while_parentheses = false
 ij_java_special_else_if_treatment = true
-ij_java_static_field_name_prefix = 
-ij_java_static_field_name_suffix = 
-ij_java_subclass_name_prefix = 
+ij_java_static_field_name_prefix =
+ij_java_static_field_name_suffix =
+ij_java_subclass_name_prefix =
 ij_java_subclass_name_suffix = Impl
 ij_java_ternary_operation_signs_on_next_line = false
 ij_java_ternary_operation_wrap = normal
-ij_java_test_name_prefix = 
+ij_java_test_name_prefix =
 ij_java_test_name_suffix = Test
 ij_java_throws_keyword_wrap = normal
 ij_java_throws_list_wrap = normal

fluent-interface/etc/fluent-interface.urm.puml

@@ -0,0 +1,72 @@
+@startuml
+package com.iluwatar.fluentinterface.fluentiterable.simple {
+  class SimpleFluentIterable<E> {
+    - iterable : Iterable<E>
+    + SimpleFluentIterable<E>(iterable : Iterable<E>)
+    + asList() : List<E>
+    + filter(predicate : Predicate<? super E>) : FluentIterable<E>
+    + first() : Optional<E>
+    + first(count : int) : FluentIterable<E>
+    + forEach(action : Consumer<? super E>)
+    + from(iterable : Iterable<E>) : FluentIterable<E> {static}
+    + fromCopyOf(iterable : Iterable<E>) : FluentIterable<E> {static}
+    + getRemainingElementsCount() : int
+    + iterator() : Iterator<E>
+    + last() : Optional<E>
+    + last(count : int) : FluentIterable<E>
+    + map(function : Function<? super E, T>) : FluentIterable<T>
+    + spliterator() : Spliterator<E>
+    + toList(iterator : Iterator<E>) : List<E> {static}
+  }
+}
+package com.iluwatar.fluentinterface.app {
+  class App {
+    - LOGGER : Logger {static}
+    + App()
+    + main(args : String[]) {static}
+    - negatives() : Predicate<? super Integer> {static}
+    - positives() : Predicate<? super Integer> {static}
+    - prettyPrint(delimiter : String, prefix : String, iterable : Iterable<E>) {static}
+    - prettyPrint(prefix : String, iterable : Iterable<E>) {static}
+    - transformToString() : Function<Integer, String> {static}
+  }
+}
+package com.iluwatar.fluentinterface.fluentiterable.lazy {
+  abstract class DecoratingIterator<E> {
+    # fromIterator : Iterator<E>
+    - next : E
+    + DecoratingIterator<E>(fromIterator : Iterator<E>)
+    + computeNext() : E {abstract}
+    + hasNext() : boolean
+    + next() : E
+  }
+  class LazyFluentIterable<E> {
+    - iterable : Iterable<E>
+    # LazyFluentIterable<E>()
+    + LazyFluentIterable<E>(iterable : Iterable<E>)
+    + asList() : List<E>
+    + filter(predicate : Predicate<? super E>) : FluentIterable<E>
+    + first() : Optional<E>
+    + first(count : int) : FluentIterable<E>
+    + from(iterable : Iterable<E>) : FluentIterable<E> {static}
+    + iterator() : Iterator<E>
+    + last() : Optional<E>
+    + last(count : int) : FluentIterable<E>
+    + map(function : Function<? super E, T>) : FluentIterable<T>
+  }
+}
+package com.iluwatar.fluentinterface.fluentiterable {
+  interface FluentIterable<E> {
+    + asList() : List<E> {abstract}
+    + copyToList(iterable : Iterable<E>) : List<E> {static}
+    + filter(Predicate<? super E>) : FluentIterable<E> {abstract}
+    + first() : Optional<E> {abstract}
+    + first(int) : FluentIterable<E> {abstract}
+    + last() : Optional<E> {abstract}
+    + last(int) : FluentIterable<E> {abstract}
+    + map(Function<? super E, T>) : FluentIterable<T> {abstract}
+  }
+}
+LazyFluentIterable ..|> FluentIterable 
+SimpleFluentIterable ..|> FluentIterable 
+@enduml

function-composition/etc/function-composition.urm.puml

@@ -0,0 +1,12 @@
+@startuml
+package com.iluwatar.function.composition {
+  class App {
+    + App()
+    + main(args : String[]) {static}
+  }
+  class FunctionComposer {
+    + FunctionComposer()
+    + composeFunctions(f1 : Function<Integer, Integer>, f2 : Function<Integer, Integer>) : Function<Integer, Integer> {static}
+  }
+}
+@enduml