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|
%{
/*
* Macros to find the Java DbEnv object for methods in various classes.
* Note that "arg1" is from the code SWIG generates for the "this"/"self".
*/
#define JDBENV (arg1 ? (jobject)DB_ENV_INTERNAL(arg1) : NULL)
#define DB2JDBENV ((jobject)DB_ENV_INTERNAL(arg1->dbenv))
#define DBC2JDBENV ((jobject)DB_ENV_INTERNAL(arg1->dbp->dbenv))
#define TXN2JDBENV ((jobject)DB_ENV_INTERNAL(arg1->mgrp->dbenv))
%}
/* Common case exception handling */
%typemap(check) SWIGTYPE *self %{
if ($input == 0) {
__dbj_throw(jenv, EINVAL, "call on closed handle", NULL, NULL);
return $null;
}%}
%define JAVA_EXCEPT_NONE
%exception %{ $action %}
%enddef
/* Most methods return an error code. */
%define JAVA_EXCEPT(_retcheck, _jdbenv)
%exception %{
$action
if (!_retcheck(result)) {
__dbj_throw(jenv, result, NULL, NULL, _jdbenv);
}
%}
%enddef
/* For everything else, errno is set in db.i. */
%define JAVA_EXCEPT_ERRNO(_retcheck, _jdbenv)
%exception %{
errno = 0;
$action
if (!_retcheck(errno)) {
__dbj_throw(jenv, errno, NULL, NULL, _jdbenv);
}
%}
%enddef
/* And then there are these (extra) special cases. */
%exception __db_env::lock_get %{
errno = 0;
$action
if (errno == DB_LOCK_NOTGRANTED) {
(*jenv)->Throw(jenv,
(*jenv)->NewObject(jenv, lockex_class, lockex_construct,
(*jenv)->NewStringUTF(jenv, "DbEnv.lock_get not granted"),
DB_LOCK_GET, arg5, jarg4, NULL, -1, JDBENV));
} else if (!DB_RETOK_STD(errno)) {
__dbj_throw(jenv, errno, NULL, NULL, JDBENV);
}
%}
%{
static jthrowable __dbj_get_except(JNIEnv *jenv,
int err, const char *msg, jobject obj, jobject jdbenv) {
jobject jmsg;
if (msg == NULL)
msg = db_strerror(err);
jmsg = (*jenv)->NewStringUTF(jenv, msg);
switch (err) {
case EINVAL:
return (jthrowable)(*jenv)->NewObject(jenv,
illegalargex_class, illegalargex_construct, jmsg);
case ENOENT:
return (jthrowable)(*jenv)->NewObject(jenv,
filenotfoundex_class, filenotfoundex_construct, jmsg);
case ENOMEM:
return (jthrowable)(*jenv)->NewObject(jenv,
outofmemerr_class, outofmemerr_construct, jmsg);
case DB_BUFFER_SMALL:
return (jthrowable)(*jenv)->NewObject(jenv, memex_class,
memex_construct, jmsg, obj, err, jdbenv);
case DB_REP_HANDLE_DEAD:
return (jthrowable)(*jenv)->NewObject(jenv,
rephandledeadex_class, rephandledeadex_construct,
jmsg, err, jdbenv);
case DB_RUNRECOVERY:
return (jthrowable)(*jenv)->NewObject(jenv, runrecex_class,
runrecex_construct, jmsg, err, jdbenv);
case DB_LOCK_DEADLOCK:
return (jthrowable)(*jenv)->NewObject(jenv, deadex_class,
deadex_construct, jmsg, err, jdbenv);
case DB_LOCK_NOTGRANTED:
return (jthrowable)(*jenv)->NewObject(jenv, lockex_class,
lockex_construct, jmsg, 0, 0, NULL, NULL, 0, jdbenv);
default:
return (jthrowable)(*jenv)->NewObject(jenv, dbex_class,
dbex_construct, jmsg, err, jdbenv);
}
}
static int __dbj_throw(JNIEnv *jenv,
int err, const char *msg, jobject obj, jobject jdbenv)
{
jthrowable t;
/* If an exception is pending, ignore requests to throw a new one. */
if ((*jenv)->ExceptionOccurred(jenv) == NULL) {
t = __dbj_get_except(jenv, err, msg, obj, jdbenv);
if (t == NULL) {
/*
* This is a problem - something went wrong creating an
* exception. We have to assume there is an exception
* created by the JVM that is pending as a result
* (e.g., OutOfMemoryError), but we don't want to lose
* this error, so we just call __db_err here.
*/
if (msg == NULL)
msg = db_strerror(err);
__db_err(NULL, "Couldn't create exception for: '%s'",
msg);
} else
(*jenv)->Throw(jenv, t);
}
return (err);
}
%}
|
