/**
* Retrieves the <code>User</code> objects representing the database users that are visible to the
* <code>User</code> object represented by the <code>session</code> argument.
*
* <p>If the <code>session</code> argument's <code>User</code> object attribute has isAdmin() true
* (directly or by virtue of a Role), then all of the <code>User</code> objects in this collection
* are considered visible. Otherwise, only this object's special <code>PUBLIC</code> <code>User
* </code> object attribute and the session <code>User</code> object, if it exists in this
* collection, are considered visible.
*
* <p>
*
* @param session The <code>Session</code> object used to determine visibility
* @return a list of <code>User</code> objects visible to the <code>User</code> object contained
* by the <code>session</code> argument.
*/
public HsqlArrayList listVisibleUsers(Session session) {
HsqlArrayList list;
User user;
boolean isAdmin;
String sessionName;
String userName;
list = new HsqlArrayList();
isAdmin = session.isAdmin();
sessionName = session.getUsername();
if (userList == null || userList.size() == 0) {
return list;
}
for (int i = 0; i < userList.size(); i++) {
user = (User) userList.get(i);
if (user == null) {
continue;
}
userName = user.getName().getNameString();
if (isAdmin) {
list.add(user);
} else if (sessionName.equals(userName)) {
list.add(user);
}
}
return list;
}
/**
* Determines if the authorizations are adequate to execute the compiled object. Completion
* requires the list of all database objects in a compiled statement.
*/
void checkAccessRights(Session session) {
if (targetTable != null && !targetTable.isTemp()) {
Grantee owner = targetTable.getOwner();
if (owner != null && owner.isSystem()) {
if (!session.getUser().isSystem()) {
throw Error.error(ErrorCode.X_42501, targetTable.getName().name);
}
}
if (!session.isProcessingScript) {
targetTable.checkDataReadOnly();
}
session.checkReadWrite();
}
if (session.isAdmin()) {
return;
}
for (int i = 0; i < sequences.length; i++) {
session.getGrantee().checkAccess(sequences[i]);
}
for (int i = 0; i < routines.length; i++) {
if (routines[i].isLibraryRoutine()) {
continue;
}
session.getGrantee().checkAccess(routines[i]);
}
for (int i = 0; i < rangeVariables.length; i++) {
RangeVariable range = rangeVariables[i];
if (range.rangeTable.getSchemaName() == SqlInvariants.SYSTEM_SCHEMA_HSQLNAME) {
continue;
}
session.getGrantee().checkSelect(range.rangeTable, range.usedColumns);
}
switch (type) {
case StatementTypes.CALL:
{
break;
}
case StatementTypes.INSERT:
{
session.getGrantee().checkInsert(targetTable, insertCheckColumns);
break;
}
case StatementTypes.SELECT_CURSOR:
break;
case StatementTypes.DELETE_WHERE:
{
session.getGrantee().checkDelete(targetTable);
break;
}
case StatementTypes.UPDATE_WHERE:
{
session.getGrantee().checkUpdate(targetTable, updateCheckColumns);
break;
}
case StatementTypes.MERGE:
{
session.getGrantee().checkInsert(targetTable, insertCheckColumns);
session.getGrantee().checkUpdate(targetTable, updateCheckColumns);
break;
}
}
}