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/*
* Copyright 2004-2010 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.index;
import org.h2.message.DbException;
import org.h2.result.Row;
import org.h2.result.SearchRow;
/**
* The cursor for a hash index.
* At most one row can be accessed.
*/
public class HashCursor implements Cursor {
private Row row;
private boolean end;
HashCursor(Row row) {
this.row = row;
}
public Row get() {
return row;
}
public SearchRow getSearchRow() {
return row;
}
public boolean next() {
if (row == null || end) {
row = null;
return false;
}
end = true;
return true;
}
public boolean previous() {
throw DbException.throwInternalError();
}
}