%{ /* * 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, memex_class, memex_construct, jmsg, obj, 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) { if ((t = __dbj_get_except(jenv, err, msg, obj, jdbenv)) == 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); } %}