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note description: "Original values of the attributes of a mismatched object." instructions: "[ This object will contain the original values of the attributes of a retrieved object for which a mismatched was detected at retrieval time. The value are indexed by the name of the attribute in the stored object. One extra entry is provided to contain the original name of the class in the storing system, indexed by the string 'class'. This allows correct_mismatch to determine the original name of its generating class in case class-name translation is in effect. ]" library: "Free implementation of ELKS library" status: "See notice at end of class." legal: "See notice at end of class." date: "$Date: 2017-03-23 11:18:26 -0800 (Thu, 23 Mar 2017) $" revision: "$Revision: 100033 $" class interface MISMATCH_INFORMATION create {MISMATCH_CORRECTOR} default_create -- Make container with default size create make (n: INTEGER_32) -- Allocate hash table for at least n items. -- The table will be resized automatically -- if more than n items are inserted. -- (from HASH_TABLE) require -- from HASH_TABLE n_non_negative: n >= 0 ensure -- from HASH_TABLE breathing_space: n < capacity more_than_minimum: capacity > Minimum_capacity no_status: not special_status feature -- Initialization accommodate (n: INTEGER_32) -- Reallocate table with enough space for n items; -- keep all current items. -- (from HASH_TABLE) require -- from HASH_TABLE n >= 0 ensure -- from HASH_TABLE count_not_changed: count = old count breathing_space: count < capacity default_create -- Make container with default size make (n: INTEGER_32) -- Allocate hash table for at least n items. -- The table will be resized automatically -- if more than n items are inserted. -- (from HASH_TABLE) require -- from HASH_TABLE n_non_negative: n >= 0 ensure -- from HASH_TABLE breathing_space: n < capacity more_than_minimum: capacity > Minimum_capacity no_status: not special_status make_equal (n: INTEGER_32) -- Allocate hash table for at least n items. -- The table will be resized automatically -- if more than n items are inserted. -- Use ~ to compare items. -- (from HASH_TABLE) require -- from HASH_TABLE n_non_negative: n >= 0 ensure -- from HASH_TABLE breathing_space: n < capacity more_than_minimum: capacity > Minimum_capacity no_status: not special_status compare_objects: object_comparison feature -- Access at alias "@" (key: STRING_8): detachable ANY assign force -- Item associated with key, if present -- otherwise default value of type G. -- Was declared in HASH_TABLE as synonym of item. -- (from HASH_TABLE) note option: stable ensure then -- from HASH_TABLE default_value_if_not_present: (not has (key)) implies (Result = computed_default_value) class_name: STRING_8 -- Name of generating class which held attribute values ensure result_exists: Result /= Void current_keys: ARRAY [STRING_8] -- New array containing actually used keys, from 1 to count -- (from HASH_TABLE) ensure -- from HASH_TABLE good_count: Result.count = count current_version: detachable IMMUTABLE_STRING_8 -- Version associated to class_name in the current system. cursor: CURSOR -- Current cursor position -- (from HASH_TABLE) ensure -- from HASH_TABLE cursor_not_void: Result /= Void definite_item (key: STRING_8): detachable ANY -- Entry of key k. -- (from HASH_TABLE) require -- from TABLE valid_key: has (key) require -- from TABLE valid_key: has (key) found_item: detachable ANY -- Item, if any, yielded by last search operation -- (from HASH_TABLE) generating_type: TYPE [detachable MISMATCH_INFORMATION] -- Type of current object -- (type of which it is a direct instance) -- (from ANY) ensure -- from ANY generating_type_not_void: Result /= Void generator: STRING_8 -- Name of current object's generating class -- (base class of the type of which it is a direct instance) -- (from ANY) ensure -- from ANY generator_not_void: Result /= Void generator_not_empty: not Result.is_empty has (key: STRING_8): BOOLEAN -- Is there an item in the table with key key? -- (from HASH_TABLE) require -- from TABLE True ensure then -- from HASH_TABLE default_case: (key = computed_default_key) implies (Result = has_default) has_item (v: detachable ANY): BOOLEAN -- Does structure include v? -- (Reference or object equality, based on object_comparison.) -- (from HASH_TABLE) ensure -- from CONTAINER not_found_in_empty: Result implies not is_empty has_key (key: STRING_8): BOOLEAN -- Is there an item in the table with key key? -- Set found_item to the found item. -- (from HASH_TABLE) ensure then -- from HASH_TABLE default_case: (key = computed_default_key) implies (Result = has_default) found: Result = found item_if_found: found implies (found_item = item (key)) hash_code_of (a_key: attached STRING_8): INTEGER_32 -- Hash_code value associated to a_key. -- (from HASH_TABLE) ensure -- from HASH_TABLE non_negative: Result >= 0 item alias "[]" (key: STRING_8): detachable ANY assign force -- Item associated with key, if present -- otherwise default value of type G. -- Was declared in HASH_TABLE as synonym of at. -- (from HASH_TABLE) note option: stable ensure then -- from HASH_TABLE default_value_if_not_present: (not has (key)) implies (Result = computed_default_value) item_for_iteration: detachable ANY -- Element at current iteration position -- (from HASH_TABLE) require -- from HASH_TABLE not_off: not off iteration_item (i: INTEGER_32): detachable ANY -- Entry at position i. -- (from HASH_TABLE) require -- from READABLE_INDEXABLE valid_index: valid_iteration_index (i) key_for_iteration: STRING_8 -- Key at current iteration position -- (from HASH_TABLE) require -- from HASH_TABLE not_off: not off new_cursor: HASH_TABLE_ITERATION_CURSOR [detachable ANY, STRING_8] -- Fresh cursor associated with current structure -- (from HASH_TABLE) require -- from ITERABLE True ensure -- from ITERABLE result_attached: Result /= Void stored_version: detachable IMMUTABLE_STRING_8 -- Version associated to class_name in the stored system. Type_name_key: STRING_8 = "_type_name" -- Associated key for retrieving the type name of a mismatch. feature -- Measurement capacity: INTEGER_32 -- Number of items that may be stored. -- (from HASH_TABLE) count: INTEGER_32 -- Number of items in table -- (from HASH_TABLE) iteration_lower: INTEGER_32 -- Minimum index. -- (from HASH_TABLE) iteration_upper: INTEGER_32 -- Maximum index. -- (from HASH_TABLE) occurrences (v: detachable ANY): INTEGER_32 -- Number of table items equal to v. -- (from HASH_TABLE) ensure -- from BAG non_negative_occurrences: Result >= 0 feature -- Comparison frozen deep_equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void -- or attached to isomorphic object structures? -- (from ANY) ensure -- from ANY instance_free: class shallow_implies_deep: standard_equal (a, b) implies Result both_or_none_void: (a = Void) implies (Result = (b = Void)) same_type: (Result and (a /= Void)) implies (b /= Void and then a.same_type (b)) symmetric: Result implies deep_equal (b, a) disjoint (other: HASH_TABLE [detachable ANY, STRING_8]): BOOLEAN -- Is Current and other disjoint on their keys? -- Use same_keys for comparison. -- (from HASH_TABLE) frozen equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void or attached -- to objects considered equal? -- (from ANY) ensure -- from ANY instance_free: class definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.is_equal (b)) frozen is_deep_equal (other: MISMATCH_INFORMATION): BOOLEAN -- Are Current and other attached to isomorphic object structures? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY shallow_implies_deep: standard_is_equal (other) implies Result same_type: Result implies same_type (other) symmetric: Result implies other.is_deep_equal (Current) is_equal (other: MISMATCH_INFORMATION): BOOLEAN -- Does table contain the same information as other? -- (from HASH_TABLE) require -- from ANY other_not_void: other /= Void ensure -- from ANY symmetric: Result implies other ~ Current consistent: standard_is_equal (other) implies Result same_keys (a_search_key, a_key: STRING_8): BOOLEAN -- Does a_search_key equal to a_key? -- (from HASH_TABLE) frozen standard_equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void or attached to -- field-by-field identical objects of the same type? -- Always uses default object comparison criterion. -- (from ANY) ensure -- from ANY instance_free: class definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.standard_is_equal (b)) frozen standard_is_equal (other: MISMATCH_INFORMATION): BOOLEAN -- Is other attached to an object of the same type -- as current object, and field-by-field identical to it? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY same_type: Result implies same_type (other) symmetric: Result implies other.standard_is_equal (Current) feature -- Status report after: BOOLEAN -- Is cursor past last item? -- Was declared in HASH_TABLE as synonym of off. -- (from HASH_TABLE) changeable_comparison_criterion: BOOLEAN -- May object_comparison be changed? -- (Answer: yes by default.) -- (from CONTAINER) conflict: BOOLEAN -- Did last operation cause a conflict? -- (from HASH_TABLE) conforms_to (other: ANY): BOOLEAN -- Does type of current object conform to type -- of other (as per Eiffel: The Language, chapter 13)? -- (from ANY) require -- from ANY other_not_void: other /= Void Extendible: BOOLEAN = False -- May new items be added? -- (from HASH_TABLE) found: BOOLEAN -- Did last operation find the item sought? -- (from HASH_TABLE) Full: BOOLEAN = False -- Is structure filled to capacity? -- (from HASH_TABLE) inserted: BOOLEAN -- Did last operation insert an item? -- (from HASH_TABLE) is_empty: BOOLEAN -- Is structure empty? -- (from FINITE) require -- from CONTAINER True is_inserted (v: detachable ANY): BOOLEAN -- Has v been inserted by the most recent insertion? -- (By default, the value returned is equivalent to calling -- has (v). However, descendants might be able to provide more -- efficient implementations.) -- (from COLLECTION) is_version_mismatched: BOOLEAN -- Is the stored_version different from the current system version? not_found: BOOLEAN -- Did last operation fail to find the item sought? -- (from HASH_TABLE) object_comparison: BOOLEAN -- Must search operations use equal rather than = -- for comparing references? (Default: no, use =.) -- (from CONTAINER) off: BOOLEAN -- Is cursor past last item? -- Was declared in HASH_TABLE as synonym of after. -- (from HASH_TABLE) prunable: BOOLEAN -- May items be removed? (Answer: yes.) -- (from DYNAMIC_TABLE) removed: BOOLEAN -- Did last operation remove an item? -- (from HASH_TABLE) replaced: BOOLEAN -- Did last operation replace an item? -- (from HASH_TABLE) same_type (other: ANY): BOOLEAN -- Is type of current object identical to type of other? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY definition: Result = (conforms_to (other) and other.conforms_to (Current)) valid_cursor (c: CURSOR): BOOLEAN -- Can cursor be moved to position c? -- (from HASH_TABLE) require -- from HASH_TABLE c_not_void: c /= Void valid_iteration_index (i: INTEGER_32): BOOLEAN -- Is i a valid index? -- (from HASH_TABLE) ensure -- from READABLE_INDEXABLE only_if_in_index_set: Result implies (iteration_lower <= i and i <= iteration_upper) feature -- Status setting compare_objects -- Ensure that future search operations will use equal -- rather than = for comparing references. -- (from CONTAINER) require -- from CONTAINER changeable_comparison_criterion: changeable_comparison_criterion ensure -- from CONTAINER object_comparison compare_references -- Ensure that future search operations will use = -- rather than equal for comparing references. -- (from CONTAINER) require -- from CONTAINER changeable_comparison_criterion: changeable_comparison_criterion ensure -- from CONTAINER reference_comparison: not object_comparison feature -- Cursor movement forth -- Advance cursor to next occupied position, -- or off if no such position remains. -- (from HASH_TABLE) require -- from HASH_TABLE not_off: not off go_to (c: CURSOR) -- Move to position c. -- (from HASH_TABLE) require -- from HASH_TABLE c_not_void: c /= Void valid_cursor: valid_cursor (c) search (key: STRING_8) -- Search for item of key key. -- If found, set found to true, and set -- found_item to item associated with key. -- (from HASH_TABLE) ensure -- from HASH_TABLE found_or_not_found: found or not_found item_if_found: found implies (found_item = item (key)) start -- Bring cursor to first position. -- (from HASH_TABLE) feature -- Element change extend (new: detachable ANY; key: STRING_8) -- Assuming there is no item of key key, -- insert new with key. -- Set inserted. -- -- To choose between various insert/replace procedures, -- see instructions in the Indexing clause. -- (from HASH_TABLE) require -- from HASH_TABLE not_present: not has (key) ensure -- from HASH_TABLE inserted: inserted insertion_done: item (key) = new one_more: count = old count + 1 default_property: has_default = ((key = computed_default_key) or (old has_default)) fill (other: CONTAINER [detachable ANY]) -- Fill with as many items of other as possible. -- The representations of other and current structure -- need not be the same. -- (from COLLECTION) require -- from COLLECTION other_not_void: other /= Void extendible: Extendible force (new: detachable ANY; key: STRING_8) -- Update table so that new will be the item associated -- with key. -- If there was an item for that key, set found -- and set found_item to that item. -- If there was none, set not_found and set -- found_item to the default value. -- -- To choose between various insert/replace procedures, -- see instructions in the Indexing clause. -- (from HASH_TABLE) require -- from TABLE valid_key: has (key) require else -- from HASH_TABLE True ensure -- from TABLE inserted: definite_item (key) = new ensure then -- from HASH_TABLE insertion_done: item (key) = new now_present: has (key) found_or_not_found: found or not_found not_found_if_was_not_present: not_found = not (old has (key)) same_count_or_one_more: (count = old count) or (count = old count + 1) found_item_is_old_item: found implies (found_item = old (item (key))) default_value_if_not_found: not_found implies (found_item = computed_default_value) default_property: has_default = ((key = computed_default_key) or ((key /= computed_default_key) and (old has_default))) merge (other: HASH_TABLE [detachable ANY, STRING_8]) -- Merge other into Current. If other has some elements -- with same key as in Current, replace them by one from -- other. -- (from HASH_TABLE) require -- from HASH_TABLE other_not_void: other /= Void ensure -- from HASH_TABLE inserted: across other as other_cursor all has (other_cursor.key) end put (new: detachable ANY; key: STRING_8) -- Insert new with key if there is no other item -- associated with the same key. -- Set inserted if and only if an insertion has -- been made (i.e. key was not present). -- If so, set position to the insertion position. -- If not, set conflict. -- In either case, set found_item to the item -- now associated with key (previous item if -- there was one, new otherwise). -- -- To choose between various insert/replace procedures, -- see instructions in the Indexing clause. -- (from HASH_TABLE) require -- from TABLE valid_key: has (key) require else -- from HASH_TABLE True ensure then -- from HASH_TABLE conflict_or_inserted: conflict or inserted insertion_done: inserted implies item (key) = new now_present: inserted implies has (key) one_more_if_inserted: inserted implies (count = old count + 1) unchanged_if_conflict: conflict implies (count = old count) same_item_if_conflict: conflict implies (item (key) = old (item (key))) found_item_associated_with_key: found_item = item (key) new_item_if_inserted: inserted implies (found_item = new) old_item_if_conflict: conflict implies (found_item = old (item (key))) default_property: has_default = ((inserted and (key = computed_default_key)) or ((conflict or (key /= computed_default_key)) and (old has_default))) replace (new: detachable ANY; key: STRING_8) -- Replace item at key, if present, -- with new; do not change associated key. -- Set replaced if and only if a replacement has been made -- (i.e. key was present); otherwise set not_found. -- Set found_item to the item previously associated -- with key (default value if there was none). -- -- To choose between various insert/replace procedures, -- see instructions in the Indexing clause. -- (from HASH_TABLE) ensure -- from HASH_TABLE replaced_or_not_found: replaced or not_found insertion_done: replaced implies item (key) = new no_change_if_not_found: not_found implies item (key) = old item (key) found_item_is_old_item: found_item = old item (key) replace_key (new_key: STRING_8; old_key: STRING_8) -- If there is an item of key old_key and no item of key -- new_key, replace the former's key by new_key, -- set replaced, and set found_item to the item -- previously associated with old_key. -- Otherwise set not_found or conflict respectively. -- If conflict, set found_item to the item previously -- associated with new_key. -- -- To choose between various insert/replace procedures, -- see instructions in the Indexing clause. -- (from HASH_TABLE) ensure -- from HASH_TABLE same_count: count = old count replaced_or_conflict_or_not_found: replaced or conflict or not_found old_absent: (replaced and not same_keys (new_key, old_key)) implies (not has (old_key)) new_present: (replaced or conflict) = has (new_key) new_item: replaced implies (item (new_key) = old (item (old_key))) not_found_implies_no_old_key: not_found implies old (not has (old_key)) conflict_iff_already_present: conflict = old has (new_key) not_inserted_if_conflict: conflict implies (item (new_key) = old item (new_key)) feature -- Removal prune (v: detachable ANY) -- Remove first occurrence of v, if any, -- after cursor position. -- Move cursor to right neighbor. -- (or after if no right neighbor or v does not occur) -- (from HASH_TABLE) require -- from COLLECTION prunable: prunable prune_all (v: detachable ANY) -- Remove all occurrences of v. -- (Reference or object equality, -- based on object_comparison.) -- (from COLLECTION) require -- from COLLECTION prunable: prunable ensure -- from COLLECTION no_more_occurrences: not has_item (v) remove (key: STRING_8) -- Remove item associated with key, if present. -- Set removed if and only if an item has been -- removed (i.e. key was present); -- if so, set position to index of removed element. -- If not, set not_found. -- Reset found_item to its default value if removed. -- (from HASH_TABLE) require -- from DYNAMIC_TABLE prunable: prunable valid_key: has (key) require else -- from HASH_TABLE prunable ensure then -- from HASH_TABLE removed_or_not_found: removed or not_found not_present: not has (key) one_less: found implies (count = old count - 1) default_case: (key = computed_default_key) implies (not has_default) non_default_case: (key /= computed_default_key) implies (has_default = old has_default) wipe_out -- Reset all items to default values; reset status. -- (from HASH_TABLE) require -- from COLLECTION prunable: prunable ensure -- from COLLECTION wiped_out: is_empty ensure then -- from HASH_TABLE position_equal_to_zero: item_position = 0 count_equal_to_zero: count = 0 has_default_set: not has_default no_status: not special_status feature -- Transformation correct_mismatch -- Attempt to correct object mismatch during retrieve using Mismatch_information. -- (from HASH_TABLE) feature -- Conversion linear_representation: ARRAYED_LIST [detachable ANY] -- Representation as a linear structure -- (from HASH_TABLE) require -- from CONTAINER True ensure then -- from HASH_TABLE result_exists: Result /= Void good_count: Result.count = count feature -- Duplication copy (other: MISMATCH_INFORMATION) -- Re-initialize from other. -- (from HASH_TABLE) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_equal: Current ~ other frozen deep_copy (other: MISMATCH_INFORMATION) -- Effect equivalent to that of: -- copy (other . deep_twin) -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY deep_equal: deep_equal (Current, other) frozen deep_twin: MISMATCH_INFORMATION -- New object structure recursively duplicated from Current. -- (from ANY) ensure -- from ANY deep_twin_not_void: Result /= Void deep_equal: deep_equal (Current, Result) frozen standard_copy (other: MISMATCH_INFORMATION) -- Copy every field of other onto corresponding field -- of current object. -- (from ANY) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_standard_equal: standard_is_equal (other) frozen standard_twin: MISMATCH_INFORMATION -- New object field-by-field identical to other. -- Always uses default copying semantics. -- (from ANY) ensure -- from ANY standard_twin_not_void: Result /= Void equal: standard_equal (Result, Current) frozen twin: MISMATCH_INFORMATION -- New object equal to Current -- twin calls copy; to change copying/twinning semantics, redefine copy. -- (from ANY) ensure -- from ANY twin_not_void: Result /= Void is_equal: Result ~ Current feature -- Basic operations frozen default: detachable MISMATCH_INFORMATION -- Default value of object's type -- (from ANY) frozen default_pointer: POINTER -- Default value of type POINTER -- (Avoid the need to write p.default for -- some p of type POINTER.) -- (from ANY) ensure -- from ANY instance_free: class default_rescue -- Process exception for routines with no Rescue clause. -- (Default: do nothing.) -- (from ANY) frozen do_nothing -- Execute a null action. -- (from ANY) ensure -- from ANY instance_free: class feature -- Inapplicable bag_put (v: detachable ANY) -- Ensure that structure includes v. -- (from TABLE) require -- from COLLECTION extendible: Extendible ensure -- from COLLECTION item_inserted: is_inserted (v) collection_extend (v: detachable ANY) -- Insert a new occurrence of v. -- (from HASH_TABLE) require -- from COLLECTION extendible: Extendible ensure -- from COLLECTION item_inserted: is_inserted (v) feature -- Correction Mismatch_information: MISMATCH_INFORMATION -- Original attribute values of mismatched object -- (from MISMATCH_CORRECTOR) feature -- Output Io: STD_FILES -- Handle to standard file setup -- (from ANY) ensure -- from ANY instance_free: class io_not_void: Result /= Void out: STRING_8 -- Printable representation of attributes values ensure -- from ANY out_not_void: Result /= Void print (o: detachable ANY) -- Write terse external representation of o -- on standard output. -- (from ANY) ensure -- from ANY instance_free: class frozen tagged_out: STRING_8 -- New string containing terse printable representation -- of current object -- (from ANY) ensure -- from ANY tagged_out_not_void: Result /= Void feature -- Platform Operating_environment: OPERATING_ENVIRONMENT -- Objects available from the operating system -- (from ANY) ensure -- from ANY instance_free: class operating_environment_not_void: Result /= Void feature -- Settings set_versions (a_stored_version: like stored_version; a_current_version: like current_version) -- Set stored_version with a_stored_version. -- Set current_version with a_current_version. ensure stored_version_set: stored_version = a_stored_version current_version_set: current_version = a_current_version invariant -- from HASH_TABLE keys_not_void: keys /= Void content_not_void: content /= Void keys_enough_capacity: keys.count <= capacity + 1 content_enough_capacity: content.count <= capacity + 1 valid_iteration_position: off or truly_occupied (iteration_position) control_non_negative: control >= 0 special_status: special_status = (conflict or inserted or replaced or removed or found or not_found) count_big_enough: 0 <= count count_small_enough: count <= capacity slot_count_big_enough: 0 <= count -- from FINITE empty_definition: is_empty = (count = 0) -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) -- from READABLE_INDEXABLE consistent_boundaries: iteration_lower <= iteration_upper or else iteration_lower = iteration_upper + 1 note copyright: "Copyright (c) 1984-2017, Eiffel Software and others" license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)" source: "[ Eiffel Software 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end -- class MISMATCH_INFORMATION
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