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Point of view
EDC_CALL_HANDLER
deferred class EDC_CONNECTION
Summary
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Overview
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exported features
Connection management:
Error management:
Session management:
Fetch direction:
Constants:
is_equal (other: EDC_CONNECTION): BOOLEAN
deferred function
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to freeze signature
disconnect
deferred procedure
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Disconnect from the data source
is_connected: BOOLEAN
deferred function
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Is the data source connected?
set_error_handler (a_error_handler: PROCEDURE[TUPLE 2[STRING, STRING]])
effective procedure
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error_handler: PROCEDURE[TUPLE 2[STRING, STRING]]
writable attribute
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Used to emit error messages.
commit
deferred procedure
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Commit changed data back to the data source
new_savepoint (name: STRING): EDC_SAVEPOINT
deferred function
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A new savepoint
rollback
deferred procedure
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Forgets and changed data
rollback_to (a_savepoint: EDC_SAVEPOINT)
deferred procedure
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Rolls the data back to the given savepoint
auto_commit: BOOLEAN
deferred function
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True if any data changed is immediately committed
set_auto_commit (a_auto_commit: BOOLEAN)
deferred procedure
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Sets the auto_commit mode
create_table (a_table: EDC_TABLE)
deferred procedure
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Create the table in the data source
drop_table (a_table: EDC_TABLE)
deferred procedure
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Drops the given table
has_table_name (a_table_name: STRING): BOOLEAN
deferred function
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Does the data source know this table?
table (a_table_name: STRING): EDC_TABLE
deferred function
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The table in the data source
all_table_names: COLLECTION[STRING]
deferred function
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The names of all the known tables
set_fetch_direction (a_fetch_direction: INTEGER_32)
deferred procedure
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Sets the fetch_diection
fetch_direction: INTEGER_32
deferred function
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Direction in which the data is returned
select_data (columns: TRAVERSABLE[EDC_COLUMN]): EDC_SELECT
effective function
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Starts a select query that will return data from the data source
insert_data (columns: TRAVERSABLE[EDC_COLUMN]): EDC_INSERT
effective function
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Starts an insert query that will insert data in the data source
update_data (columns: TRAVERSABLE[EDC_COLUMN]): EDC_UPDATE
effective function
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Starts an update query that will modify some data in the data source
delete_data (columns: TRAVERSABLE[EDC_COLUMN]): EDC_DELETE
effective function
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Starts a delete query that will remove some data from the data source
call_select (a_selectable: EDC_SELECTABLE): EDC_RESULT_SET
deferred function
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The real implementation of data retrieval from the data source
call_update (a_update: EDC_UPDATE, a_values: TRAVERSABLE[EDC_VALUE]): INTEGER_32
effective function
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The real implementation of data update from the data source.
call_delete (a_delete: EDC_DELETE): INTEGER_32
effective function
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The real implementation of data removal from the data source.
call_insert (a_columns: FAST_ARRAY[EDC_COLUMN], a_values: FAST_ARRAY[EDC_VALUE])
deferred procedure
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The real implementation of data storage in the data source
Fetch_forward: INTEGER_32
constant attribute
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Fetch_backward: INTEGER_32
constant attribute
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