/*
* call-seq:
* client_info = string or nil
*
* <b>(new in 2.0.3)</b>
*
* Sets additional information about the client application.
* This information is stored in the V$SESSION view.
*
* === Oracle 10g client or upper
*
* This doesn't perform network round trips. The change is reflected
* to the server by the next round trip such as OCI8#exec, OCI8#ping,
* etc.
*
* === Oracle 9i client or lower
*
* This executes the following PL/SQL block internally.
* The change is reflected immediately by a network round trip.
*
* BEGIN
* DBMS_APPLICATION_INFO.SET_CLIENT_INFO(:client_info);
* END;
*
* See {Oracle Manual: Oracle Database PL/SQL Packages and Types Reference}[http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_appinf.htm#CHEJCFGG]
*/
static VALUE oci8_set_client_info(VALUE self, VALUE val)
{
char *ptr;
ub4 size;
if (!NIL_P(val)) {
OCI8SafeStringValue(val);
ptr = RSTRING_PTR(val);
size = RSTRING_LEN(val);
} else {
ptr = "";
size = 0;
}
if (oracle_client_version >= ORAVER_10_1) {
/* Oracle 10g or upper */
oci_lc(OCIAttrSet(oci8_get_oci_session(self), OCI_HTYPE_SESSION, ptr,
size, OCI_ATTR_CLIENT_INFO, oci8_errhp));
} else {
/* Oracle 9i or lower */
oci8_exec_sql_var_t bind_vars[1];
/* :client_info */
bind_vars[0].valuep = ptr;
bind_vars[0].value_sz = size;
bind_vars[0].dty = SQLT_CHR;
bind_vars[0].indp = NULL;
bind_vars[0].alenp = NULL;
oci8_exec_sql(oci8_get_svcctx(self),
"BEGIN\n"
" DBMS_APPLICATION_INFO.SET_CLIENT_INFO(:client_info);\n"
"END;\n", 0, NULL, 1, bind_vars, 1);
}
return val;
}
static VALUE get_rowid_attr(rowid_arg_t *arg)
{
oci8_base_t *base = arg->base;
ub4 attrtype = arg->attrtype;
char buf[MAX_ROWID_LEN];
ub2 buflen;
sword rv;
/* get a rowid descriptor from OCIHandle */
rv = OCIDescriptorAlloc(oci8_envhp, (dvoid*)&arg->ridp, OCI_DTYPE_ROWID, 0, NULL);
if (rv != OCI_SUCCESS)
oci8_env_raise(oci8_envhp, rv);
rv = OCIAttrGet(base->hp.ptr, base->type, arg->ridp, 0, attrtype, oci8_errhp);
if (rv != OCI_SUCCESS) {
oci8_raise(oci8_errhp, rv, NULL);
}
/* convert the rowid descriptor to a string. */
if (have_OCIRowidToChar) {
/* If OCIRowidToChar is available, use it. */
buflen = MAX_ROWID_LEN;
rv = OCIRowidToChar(arg->ridp, TO_ORATEXT(buf), &buflen, oci8_errhp);
if (rv != OCI_SUCCESS) {
oci8_raise(oci8_errhp, rv, NULL);
}
} else {
/* If OCIRowidToChar is not available, convert it on
* Oracle Server.
*/
oci8_base_t *svc;
oci8_exec_sql_var_t define_var;
oci8_exec_sql_var_t bind_var;
/* search a connection from the handle */
svc = base;
while (svc->type != OCI_HTYPE_SVCCTX) {
svc = svc->parent;
if (svc == NULL) {
rb_raise(rb_eRuntimeError, "No connection is found!!");
}
}
/* :strval */
define_var.valuep = buf;
define_var.value_sz = sizeof(buf);
define_var.dty = SQLT_CHR;
define_var.indp = NULL;
define_var.alenp = &buflen;
/* :rowid */
bind_var.valuep = &arg->ridp;
bind_var.value_sz = sizeof(void *);
bind_var.dty = SQLT_RDD;
bind_var.indp = NULL;
bind_var.alenp = NULL;
/* convert the rowid descriptor to a string value by querying Oracle server. */
oci8_exec_sql((oci8_svcctx_t*)svc, "SELECT :rid FROM dual", 1, &define_var, 1, &bind_var, 1);
if (buflen == 0) {
return Qnil;
}
}
return rb_external_str_new_with_enc(buf, buflen, rb_usascii_encoding());
}
/*
* call-seq:
* ping -> true or false
*
* <b>(new in 2.0.2)</b>
*
* Makes a round trip call to the server to confirm that the connection and
* the server are active.
*
* OCI8#ping also can be used to flush all the pending OCI client-side calls
* to the server if any exist.
*
* === Oracle 10.2 client or upper
* A dummy round trip call is made by a newly added OCI function
* OCIPing[http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14250/oci16msc007.htm#sthref3540] in Oracle 10.2.
*
* === Oracle 10.1 client or lower
* A simple PL/SQL block "BEGIN NULL; END;" is executed to make a round trip call.
*/
static VALUE oci8_ping(VALUE self)
{
oci8_svcctx_t *svcctx = oci8_get_svcctx(self);
sword rv;
if (have_OCIPing_nb) {
/* Oracle 10.2 or upper */
rv = OCIPing_nb(svcctx, svcctx->base.hp.svc, oci8_errhp, OCI_DEFAULT);
} else {
/* Oracle 10.1 or lower */
rv = oci8_exec_sql(svcctx, "BEGIN NULL; END;", 0U, NULL, 0U, NULL, 0);
}
return rv == OCI_SUCCESS ? Qtrue : FALSE;
}
/*
* call-seq:
* client_identifier = string or nil
*
* <b>(new in 2.0.3)</b>
*
* Sets the client ID. This information is stored in the V$SESSION
* view.
*
* === Oracle 9i client or upper
*
* This doesn't perform network round trips. The change is reflected
* to the server by the next round trip such as OCI8#exec, OCI8#ping,
* etc.
*
* === Oracle 8i client or lower
*
* This executes the following PL/SQL block internally.
* The change is reflected immediately by a network round trip.
*
* BEGIN
* DBMS_SESSION.SET_IDENTIFIER(:client_id);
* END;
*
* See {Oracle Manual: Oracle Database PL/SQL Packages and Types Reference}[http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_sessio.htm#i996935]
*
*/
static VALUE oci8_set_client_identifier(VALUE self, VALUE val)
{
char *ptr;
ub4 size;
int use_attr_set = 1;
if (!NIL_P(val)) {
OCI8SafeStringValue(val);
ptr = RSTRING_PTR(val);
size = RSTRING_LEN(val);
} else {
ptr = "";
size = 0;
}
if (oracle_client_version < ORAVER_9_0) {
use_attr_set = 0;
} else if (oracle_client_version < ORAVERNUM(9, 2, 0, 3, 0) && size == 0) {
/* Workaround for Bug 2449486 */
use_attr_set = 0;
}
if (use_attr_set) {
if (size > 0 && ptr[0] == ':') {
rb_raise(rb_eArgError, "client identifier should not start with ':'.");
}
oci_lc(OCIAttrSet(oci8_get_oci_session(self), OCI_HTYPE_SESSION, ptr,
size, OCI_ATTR_CLIENT_IDENTIFIER, oci8_errhp));
} else {
oci8_exec_sql_var_t bind_vars[1];
/* :client_id */
bind_vars[0].valuep = ptr;
bind_vars[0].value_sz = size;
bind_vars[0].dty = SQLT_CHR;
bind_vars[0].indp = NULL;
bind_vars[0].alenp = NULL;
oci8_exec_sql(oci8_get_svcctx(self),
"BEGIN\n"
" DBMS_SESSION.SET_IDENTIFIER(:client_id);\n"
"END;\n", 0, NULL, 1, bind_vars, 1);
}
return val;
}
/*
* call-seq:
* module = string or nil
*
* <b>(new in 2.0.3)</b>
*
* Sets the name of the current module. This information is
* stored in the V$SESSION view and is also stored in the V$SQL view
* and the V$SQLAREA view when a SQL statement is executed and the SQL
* statement is first parsed in the Oracle server.
*
* === Oracle 10g client or upper
*
* This doesn't perform network round trips. The change is reflected
* to the server by the next round trip such as OCI8#exec, OCI8#ping,
* etc.
*
* === Oracle 9i client or lower
*
* This executes the following PL/SQL block internally.
* The change is reflected immediately by a network round trip.
*
* DECLARE
* action VARCHAR2(32);
* BEGIN
* -- retrieve action name.
* SELECT SYS_CONTEXT('USERENV','ACTION') INTO action FROM DUAL;
* -- change module name without modifying the action name.
* DBMS_APPLICATION_INFO.SET_MODULE(:module, action);
* END;
*
* See {Oracle Manual: Oracle Database PL/SQL Packages and Types Reference}[http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_appinf.htm#i999254]
*
*/
static VALUE oci8_set_module(VALUE self, VALUE val)
{
const char *ptr;
ub4 size;
if (!NIL_P(val)) {
OCI8SafeStringValue(val);
ptr = RSTRING_PTR(val);
size = RSTRING_LEN(val);
} else {
ptr = "";
size = 0;
}
if (oracle_client_version >= ORAVER_10_1) {
/* Oracle 10g or upper */
chker2(OCIAttrSet(oci8_get_oci_session(self), OCI_HTYPE_SESSION, (dvoid*)ptr,
size, OCI_ATTR_MODULE, oci8_errhp),
DATA_PTR(self));
} else {
/* Oracle 9i or lower */
oci8_exec_sql_var_t bind_vars[1];
/* :module */
bind_vars[0].valuep = (dvoid*)ptr;
bind_vars[0].value_sz = size;
bind_vars[0].dty = SQLT_CHR;
bind_vars[0].indp = NULL;
bind_vars[0].alenp = NULL;
oci8_exec_sql(oci8_get_svcctx(self),
"DECLARE\n"
" action VARCHAR2(32);\n"
"BEGIN\n"
" SELECT SYS_CONTEXT('USERENV','ACTION') INTO action FROM DUAL;\n"
" DBMS_APPLICATION_INFO.SET_MODULE(:module, action);\n"
"END;\n", 0, NULL, 1, bind_vars, 1);
}
return self;
}
