}
}
+ // FIXME: untested
+ // note: only one ResultSet is allowed per Statement
+ public static class DatabaseColumn implements Fountain {
+ private ResultSet rs;
+ private int row;
+ private int column;
+ public DatabaseColumn(ResultSet rs, int column) throws SQLException {
+ this(rs, column, rs.getRow());
+ }
+ public DatabaseColumn(ResultSet rs, int column, int row) throws SQLException {
+ this.rs = rs;
+ this.row = row;
+ this.column = column;
+ synchronized(rs) {
+ int type = rs.getType();
+ if ((type | ResultSet.TYPE_SCROLL_INSENSITIVE) == 0)
+ throw new RuntimeException("Fountain.DatabaseColumn(ResultSet,int) requires a SCROLL_INSENSITIVE ResultSet");
+ if ((type | ResultSet.TYPE_FORWARD_ONLY) != 0)
+ throw new RuntimeException("Fountain.DatabaseColumn(ResultSet,int) cannot use TYPE_FORWARD_ONLY ResultSets");
+ }
+ // FIXME: do we want to check HOLD_CURSORS_OVER_COMMIT ?
+ }
+ private Blob getBlob() throws SQLException {
+ synchronized(rs) {
+ if (!rs.absolute(row))
+ throw new RuntimeException("resultset was unable to move to desired row");
+ return rs.getBlob(column);
+ }
+ }
+ public Stream getStream() {
+ try {
+ synchronized(rs) {
+ return new Stream(rs.getBinaryStream(column));
+ }
+ } catch (SQLException e) { throw new RuntimeException(e); }
+ }
+ public long getLength() {
+ try {
+ synchronized(rs) {
+ return getBlob().length();
+ }
+ } catch (SQLException e) { throw new RuntimeException(e); }
+ }
+ public int getNumLines() {
+ throw new RuntimeException("not implemented");
+ }
+ }
+
+
//public static class LazyCachingStreamFountain implements Fountain {
//}