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Internal doc additions in the JNI bits.

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FossilOrigin-Name: b56643644e065b03fe2c3545e02ed3b2f6fd9f77c39aa84a02a00d695e9a12dc
This commit is contained in:
stephan
2023-08-02 17:20:52 +00:00
parent ed77e13f05
commit decc1425a3
4 changed files with 24 additions and 17 deletions
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23
ext/jni/src/c/sqlite3-jni.c
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@ -1869,8 +1869,13 @@ JDECL(jint,1initialize)(JENV_JSELF){
}
/**
Sets jc->currentStmt to the 2nd arugment and returns the previous value
of jc->currentStmt.
Sets jc->currentStmt to the 2nd arugment and returns the previous
value of jc->currentStmt. This must always be called in pairs: once
to replace the current statement with the call-local one, and once
to restore it. It must be used in any stmt-handling routines which
may lead to the tracing callback being called, as the current stmt
is needed for certain tracing flags. At a minumum those ops are:
step, reset, finalize, prepare.
*/
static jobject stmt_set_current(JNIEnvCacheLine * const jc, jobject jStmt){
jobject const old = jc->currentStmt;
@ -2243,14 +2248,14 @@ JDECL(jint,1shutdown)(JENV_JSELF){
}
JDECL(jint,1step)(JENV_JSELF,jobject jStmt){
jobject jPrevStmt = 0;
JNIEnvCacheLine * const jc = S3Global_env_cache(env);
int rc;
int rc = SQLITE_MISUSE;
sqlite3_stmt * const pStmt = PtrGet_sqlite3_stmt(jStmt);
if(!pStmt) return SQLITE_MISUSE;
jPrevStmt = stmt_set_current(jc, jStmt);
rc = sqlite3_step(pStmt);
(void)stmt_set_current(jc, jPrevStmt);
if(pStmt){
JNIEnvCacheLine * const jc = S3Global_env_cache(env);
jobject const jPrevStmt = stmt_set_current(jc, jStmt);
rc = sqlite3_step(pStmt);
(void)stmt_set_current(jc, jPrevStmt);
}
return rc;
}