/** This method caueses the project to generate the table that is the result of the PROJECT. */
public void generateTemporaryTable() {
// Get the schema for the thing below it
Relation source = RelationHolder.getRelationHolder().getRelation(tableOne.getResultTableID());
// Create the new table
Relation result = new Relation(QueryParser.RESULT + resultTableID, resultTableID);
RelationHolder.getRelationHolder().addRelation(result);
// System.out.println("PROJECT TABLE SOURCE: " + source);
// System.out.println("PROJECT ATTRIBUTES: " + attributes);
// System.out.println("SOURCE ATTRIBUTES: " + source.getAttributes());
// For each attribute, get the real thing from the source
for (int index = 0; index < attributes.size(); index++) {
String currentName = attributes.get(index);
// System.out.println("PROJECT CURRENT ATTRIBUTE: " + currentName);
// Use tempCurrentName cause it may be qualified
Attribute currentAttribute = source.getAttributeByName(currentName);
// Give it the full name when we make it though
Attribute newAttribute = new Attribute(currentName, currentAttribute.getType(), 0);
result.addAttribute(newAttribute);
}
}
public boolean execute() {
if (!tableOne.execute()) {
System.out.println("in here?");
return false;
}
Relation r = RelationHolder.getRelationHolder().getRelation(this.resultTableID);
Relation s = RelationHolder.getRelationHolder().getRelation(tableOne.getResultTableID());
String[] attnames = new String[attributes.size()];
if (r == null) return false;
for (int j = 0; j < attnames.length; j++) {
Attribute att = s.getAttributeByName(attributes.get(j).trim());
// r.addAttribute(att.getName(), att.getType(),
// Database.getCatalog().getSmallestUnusedAttributeID());
attnames[j] = att.getName();
}
System.out.println(attnames);
Iterator it = new Iterator(s);
String[] newattvals = new String[attnames.length];
while (it.hasNext()) {
System.out.println("onerow");
String[] oldattvals = it.getNext();
for (int j = 0; j < attributes.size(); j++) {
for (Attribute a : s.getAttributes()) {
System.out.println(a.getName());
}
int idx = s.getIndexByName(attributes.get(j));
newattvals[j] = oldattvals[idx];
}
if (!Database.getCatalog().insert(this.resultTableID, attnames, newattvals)) return false;
}
return true;
}
