SQLite 授權(quán)動作編碼(AuthorizerAction

本文主要與注冊授權(quán)回調(diào)函數(shù)相關(guān)：sqlite3_set_authorizer 詳細(xì)的調(diào)用方式，請參考其他的章節(jié)??！

摘自：https://www.sqlite.org/c3ref/c_alter_table.html

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/*******************************************3rd ************ 4th ***********/
#define SQLITE_CREATE_INDEX????????? 1? /* Index Name????? Table Name????? */
#define SQLITE_CREATE_TABLE????????? 2? /* Table Name????? NULL??????????? */
#define SQLITE_CREATE_TEMP_INDEX???? 3? /* Index Name????? Table Name????? */
#define SQLITE_CREATE_TEMP_TABLE???? 4? /* Table Name????? NULL??????????? */
#define SQLITE_CREATE_TEMP_TRIGGER?? 5?? /*Trigger Name??? Table Name????? */
#define SQLITE_CREATE_TEMP_VIEW????? 6? /* View Name?????? NULL??????????? */
#define SQLITE_CREATE_TRIGGER??????? 7? /* Trigger Name??? Table Name????? */
#define SQLITE_CREATE_VIEW?????????? 8? /* View Name?????? NULL??????????? */
#define SQLITE_DELETE??????????????? 9?? /* Table Name????? NULL??????????? */
#define SQLITE_DROP_INDEX?????????? 10? /* Index Name????? Table Name????? */
#define SQLITE_DROP_TABLE?????????? 11? /* Table Name????? NULL??????????? */
#define SQLITE_DROP_TEMP_INDEX????? 12? /* Index Name????? Table Name????? */
#define SQLITE_DROP_TEMP_TABLE????? 13? /* Table Name????? NULL??????????? */
#define SQLITE_DROP_TEMP_TRIGGER??? 14? /* Trigger Name??? Table Name????? */
#define SQLITE_DROP_TEMP_VIEW?????? 15? /* View Name?????? NULL??????????? */
#define SQLITE_DROP_TRIGGER???????? 16? /* Trigger Name??? Table Name????? */
#define SQLITE_DROP_VIEW??????????? 17? /* View Name?????? NULL??????????? */
#define SQLITE_INSERT?????????????? 18?? /* Table Name????? NULL??????????? */
#define SQLITE_PRAGMA?????????????? 19?? /* Pragma Name???? 1st arg or NULL */
#define SQLITE_READ???????????????? 20?? /* Table Name????? Column Name???? */
#define SQLITE_SELECT?????????????? 21?? /* NULL??????????? NULL??????????? */
#define SQLITE_TRANSACTION????????? 22? /* Operation?????? NULL??????????? */
#define SQLITE_UPDATE?????????????? 23?? /* Table Name????? Column Name???? */
#define SQLITE_ATTACH?????????????? 24?? /* Filename??????? NULL??????????? */
#define SQLITE_DETACH?????????????? 25?? /* Database Name?? NULL??????????? */
#define SQLITE_ALTER_TABLE????????? 26? /* Database Name?? Table Name????? */
#define SQLITE_REINDEX????????????? 27?? /* Index Name????? NULL??????????? */
#define SQLITE_ANALYZE????????????? 28?? /* Table Name????? NULL??????????? */
#define SQLITE_CREATE_VTABLE??????? 29? /* Table Name????? ModuleName???? */
#define SQLITE_DROP_VTABLE????????? 30? /* Table Name????? ModuleName???? */
#define SQLITE_FUNCTION???????????? 31?? /* NULL??????????? Function Name?? */
#define SQLITE_SAVEPOINT??????????? 32? /* Operation?????? SavepointName? */
#define SQLITE_COPY????????????????? 0?? /* No longer used */
#define SQLITE_RECURSIVE??????????? 33? /* NULL??????????? NULL??????????? */

????????sqlite3_set_authorizer接口注冊一個回調(diào)函數(shù)，該回調(diào)函數(shù)將被調(diào)用去授權(quán)執(zhí)行SQL語句。回調(diào)函數(shù)的第二個參數(shù)是一個整型，指定了那些操作是被授權(quán)的，這些整型的動作編碼（integer action codes）是回調(diào)函數(shù)可以通過的。
這些動作編號值指定了哪種操作是被允許的。第三和第四個參數(shù)是否為NULL，還是其他的參數(shù)，完全依賴于第二個參數(shù)的設(shè)置，第五個參數(shù)是數(shù)據(jù)庫的名稱（main,temp，或者其他）if applicable.第六個參數(shù)嘗試訪問的內(nèi)置觸發(fā)器或者視圖，當(dāng)然如果為NULL，表示嘗試訪問來自于最高級的SQL編碼（The 6th parameter to the authorizer callback is the nameof the inner-most trigger or view that is responsible for the access attempt orNULL if this access attempt is directly from top-level SQL code）.