static bool check_enabled(
bool *newval, void **extra, GucSource source)
{
if ( initstage < IS_PLJAVA_ENABLED )
return true;
if ( *newval )
return true;
GUC_check_errmsg(
"too late to change \"pljava.enable\" setting");
GUC_check_errdetail(
"Start-up has progressed past the point where it is checked.");
GUC_check_errhint(
"For another chance, exit this session and start a new one.");
return false;
}
static bool check_libjvm_location(
char **newval, void **extra, GucSource source)
{
if ( initstage < IS_CAND_JVMOPENED )
return true;
if ( libjvmlocation == *newval )
return true;
if ( libjvmlocation && *newval && 0 == strcmp(libjvmlocation, *newval) )
return true;
GUC_check_errmsg(
"too late to change \"pljava.libjvm_location\" setting");
GUC_check_errdetail(
"Changing the setting can have no effect after "
"PL/Java has found and opened the library it points to.");
GUC_check_errhint(
"To try a different value, exit this session and start a new one.");
return false;
}
static bool check_classpath(
char **newval, void **extra, GucSource source)
{
if ( initstage < IS_JAVAVM_OPTLIST )
return true;
if ( classpath == *newval )
return true;
if ( classpath && *newval && 0 == strcmp(classpath, *newval) )
return true;
GUC_check_errmsg(
"too late to change \"pljava.classpath\" setting");
GUC_check_errdetail(
"Changing the setting has no effect after "
"PL/Java has started the Java virtual machine.");
GUC_check_errhint(
"To try a different value, exit this session and start a new one.");
return false;
}
static bool eudc_fallback_character_check_hook(
const char **newval, void** extra, GucSource source)
{
int len;
GUC_check_errhint("must be one character or empty string");
/* handle explicit setting of eudc.fallback_character */
if (*newval)
{
/* eudc.fallback_character
* should be 0 or 1 character
*/
len = pg_mbstrlen(*newval);
if (len >= 2 || len < 0)
return false;
}
return true;
}
