c_iter
v_resolveShare(
v_kernel kernel,
const c_char *name)
{
c_iter list;
c_collection q;
q_expr expr;
c_value params[1];
assert(kernel != NULL);
assert(C_TYPECHECK(kernel,v_kernel));
expr = (q_expr)q_parse("name like %0");
params[0] = c_stringValue((char *)name);
q = c_queryNew(kernel->shares,expr,params);
q_dispose(expr);
v_lockShares(kernel);
list = c_select(q,0);
v_unlockShares(kernel);
c_free(q);
return list;
}
static c_bool
v__partitionAdminRemove(
v_partitionAdmin da,
const char *partitionName,
v_partition *partitionRemoved)
{
c_bool result;
v_partition partition, found;
q_expr expr;
c_collection q;
c_iter list;
c_value params[1];
assert(v_partitionExpressionIsAbsolute(partitionName));
expr = (q_expr)q_parse("name like %0");
params[0] = c_stringValue((char *)partitionName);
q = c_queryNew(da->partitions, expr, params);
q_dispose(expr);
list = ospl_c_select(q,0);
assert(c_iterLength(list) <= 1);
partition = v_partition(c_iterTakeFirst(list));
if (partition) {
found = c_tableRemove(da->partitions, partition, NULL, NULL);
*partitionRemoved = found;
c_free(partition);
result = TRUE;
} else {
*partitionRemoved = NULL;
result = FALSE;
}
c_free(q);
c_iterFree(list);
return result;
}
u_dataReader
u_subscriberCreateDataReader (
u_subscriber _this,
const c_char *name,
const c_char *expression,
c_value params[],
v_readerQos qos,
c_bool enable)
{
u_dataReader reader;
q_expr expr;
if (_this) {
if (expression) {
expr = q_parse(expression);
if (!expr) {
OS_REPORT_1(OS_WARNING,
"u_subscriberCreateDataReader",0,
"Invalid filter expression: '%s'.",
expression);
}
} else {
expr = NULL;
}
reader = u_dataReaderNew(_this, name, expr, params, qos, enable);
if (expr) {
q_dispose(expr);
}
} else {
reader = NULL;
OS_REPORT(OS_WARNING,
"u_subscriberCreateDataReader",0,
"Bad parameter: Subscriber = NULL.");
}
return reader;
}
c_char*
cmx_dataReaderNew(
const c_char* subscriber,
const c_char* name,
const c_char* view,
const c_char* qos)
{
u_subscriber sub;
u_dataReader rea;
c_char* result;
cmx_entityArg arg;
u_result ur;
cmx_entityKernelArg kernelArg;
v_readerQos rqos;
q_expr qexpr;
result = NULL;
sub = u_subscriber(cmx_entityUserEntity(subscriber));
if(sub != NULL){
kernelArg = cmx_entityKernelArg(os_malloc(C_SIZEOF(cmx_entityKernelArg)));
u_entityAction(u_entity(sub),
cmx_entityKernelAction,
(c_voidp)kernelArg);
if(qos != NULL){
rqos = v_readerQos(cmx_qosKernelQosFromKind(qos, K_DATAREADER, c_getBase(c_object(kernelArg->kernel))));
if(rqos == NULL){
rqos = v_readerQosNew(kernelArg->kernel, NULL);
}
} else {
rqos = v_readerQosNew(kernelArg->kernel, NULL);
}
if(view != NULL){
qexpr = q_parse(view);
if(qexpr != NULL){
rea = u_dataReaderNew(sub, name, qexpr, NULL, rqos, TRUE);
q_dispose(qexpr);
} else {
rea = NULL;
OS_REPORT(OS_ERROR, CM_XML_CONTEXT, 0,
"cmx_dataReaderNew: invalid view expression.");
}
} else {
rea = u_dataReaderNew(sub, name, NULL, NULL, rqos, TRUE);
}
c_free(rqos);
os_free(kernelArg);
if(rea != NULL){
cmx_registerEntity(u_entity(rea));
arg = cmx_entityArg(os_malloc((os_uint32)(C_SIZEOF(cmx_entityArg))));
arg->entity = u_entity(rea);
arg->create = FALSE;
arg->participant = NULL;
arg->result = NULL;
ur = u_entityAction(u_entity(rea),
cmx_entityNewFromAction,
(c_voidp)(arg));
if(ur == U_RESULT_OK){
result = arg->result;
os_free(arg);
}
}
}
return result;
}
