/** This method returns new AttributeList by replacing all source names with a new source name. */
public AttributeList renameAllSourceNames(String to) {
AttributeList rval = copy();
for (int i = 0; i < rval.attr.size(); i++) {
if (rval.isAttribute(i)) {
Attribute a = rval.getAttribute(i);
rval.attr.set(i, new Attribute(to, a.getColumnName()));
} else if (rval.isFunction(i)) {
FunctionParameter f = rval.getFunction(i);
AttributeList args = f.getArguments().renameAllSourceNames(to);
rval.attr.set(i, new FunctionParameter(f.getFunctionName(), args));
}
}
return rval;
}
/** This method returns new AttributeList by replaceing given column name with new column name. */
public AttributeList renameColumnName(String from, String to) {
AttributeList rval = copy();
if (from == null || to == null || from.equals(to)) return rval;
for (int i = 0; i < rval.attr.size(); i++) {
if (rval.isAttribute(i)) {
Attribute a = rval.getAttribute(i);
if (a.getColumnName().equals(from)) rval.attr.set(i, new Attribute(a.getSourceName(), to));
} else if (rval.isFunction(i)) {
FunctionParameter f = rval.getFunction(i);
AttributeList args = f.getArguments().renameColumnName(from, to);
rval.attr.set(i, new FunctionParameter(f.getFunctionName(), args));
}
}
return rval;
}