Method indexIterator

src/java/simpledb/index/BTreeFile.java:1290–1292

get the specified tuples from the file based on its IndexPredicate value on behalf of the specified transaction. This method will acquire a read lock on the affected pages of the file, and may block until the lock can be acquired. @param tid - the transaction id @param ipred - the index predicate v

(TransactionId tid, IndexPredicate ipred)

	 * @return an iterator for the filtered tuples
	 */
	public DbFileIterator indexIterator(TransactionId tid, IndexPredicate ipred) {
		return new BTreeSearchIterator(this, tid, ipred);
	}

	/**
	 * Get an iterator for all tuples in this B+ tree file in sorted order. This method