/**
* Return the list of transactions currently <I>in prepared or heuristically completed states</I>.
* Need to find out what non-prepared states they are considering <I>heuristically completed</I>.
*
* @see javax.transaction.xa.XAResource#recover(int)
*/
Xid[] getPreparedXids() {
Iterator it = resources.keySet().iterator();
Xid curXid;
HashSet preparedSet = new HashSet();
while (it.hasNext()) {
curXid = (Xid) it.next();
if (((JDBCXAResource) resources.get(curXid)).state == JDBCXAResource.XA_STATE_PREPARED) {
preparedSet.add(curXid);
}
}
return (Xid[]) preparedSet.toArray(new Xid[0]);
}
void addNamedJoinColumnExpression(String name, Expression e) {
if (namedJoinColumnExpressions == null) {
namedJoinColumnExpressions = new HashMap();
}
namedJoinColumnExpressions.put(name, e);
}
/**
* Retruns index for column
*
* @param columnName name of column
* @return int index or -1 if not found
*/
public int findColumn(String columnName) {
if (namedJoinColumnExpressions != null && namedJoinColumnExpressions.containsKey(columnName)) {
return -1;
}
if (variables != null) {
return variables.getIndex(columnName);
} else if (columnAliases != null) {
return columnAliases.getIndex(columnName);
} else {
return rangeTable.findColumn(columnName);
}
}
public JDBCXAResource removeResource(Xid xid) {
return (JDBCXAResource) resources.remove(xid);
}
public void addResource(Xid xid, JDBCXAResource xaResource) {
resources.put(xid, xaResource);
}
/**
* This is needed so that XAResource.commit() and XAResource.rollback() may be applied to the
* right Connection (which is not necessarily that associated with that XAResource object).
*
* @see javax.transaction.xa.XAResource#commit(Xid, boolean)
* @see javax.transaction.xa.XAResource#rollback(Xid)
*/
JDBCXAResource getResource(Xid xid) {
return (JDBCXAResource) resources.get(xid);
}
ExpressionColumn getColumnExpression(String name) {
return namedJoinColumnExpressions == null
? null
: (ExpressionColumn) namedJoinColumnExpressions.get(name);
}