package jnicli;/** * Database session interface. This interface is used for communication with remote database server using RMI. */public interface DatabaseSession {     /**     * Open database     * @param accessType database access type: one of READ_ONLY, READ_WRITE, CONCURRENT_READ or CONCURRENT_UPDATE     * @param databaseName database name     * @param databasePath path to the database file     * @param initSize initial size of database      * @param transactionCommitDelay transaction commit delay (specify 0 to disable)     * @return database session identifier     */    long open(int accessType, String databaseName, String databasePath, long initSize, int transactionCommitDelay);        /**     * Close database     * @param session session identifier     */    void close(long session);    /**     * Select objects from table matching condition     * @param session session identifier     * @param table class corresponding to the table     * @param condition SubSQL condition (to select all records pass empty string)     * @param flags combination of FOR_UPDATE and AUTOCOMMIT flags     * @return cursor for selected objects     */    Cursor select(long session, Class table, String condition, int flags);        /**     * Update object with soecified OID     * @param session session identifier     * @param oid OID of updated object     * @param obj updated object     */    void update(long session, long oid, Object obj);    /**     * Insert new object in the database. Object will be inserted in the table with the same name     * as object class     * @param session session identifier     * @param obj inserted object     * @return OID of inserted object     */    long insert(long session, Object obj);    /**     * Delete all objects from the table matching specified condition     * @param session session identifier     * @param table class corresponding to the table     * @param condition SubSQL condition (to delete all records pass empty string)     * @return number of deleted objects     */    int delete(long session, Class table, String condition);    /**     * Commit current transaction.      * Transaction is implicitly started when any database operation is perfromed.     * @param session session identifier     */    void commit(long session);    /**     * Commit current transaction     * Transaction is implicitly started when any database operation is perfromed.     * @param session session identifier     */    void rollback(long session);    /**     * Lock database in exclusive mode.     * Lock is automatically released when transaction is committed or aborted     * @param session session identifier     */    void lock(long session);    /**     * Attach thread to the database. All threads except the one opened the database should     * invoke this method before start working with database     * @return database session identifier     */    long attach();    /**     * Detach thread to the database. All threads except the one opened the database should     * invoke this method before start working with database     * @param flags combination of CLI_DETACH_COMMIT and CLI_DETACH_DESTROY_CONTEXT flags     * @param session session identifier     */    void detach(long session, int flags);}