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/*-------------------------------------------------------------------------
*
* Copyright (c) 2004-2011, PostgreSQL Global Development Group
* Copyright (c) 2004, Open Cloud Limited.
*
* IDENTIFICATION
*   $PostgreSQL: pgjdbc/org/postgresql/jdbc2/ResultWrapper.java,v 1.6 2011/08/02 13:48:35 davecramer Exp $
*
*-------------------------------------------------------------------------
*/
package org.postgresql.jdbc2;

import java.sql.*;

/**
 * Helper class that storing result info. This handles both the
 * ResultSet and no-ResultSet result cases with a single interface for
 * inspecting and stepping through them.
 *
 * @author Oliver Jowett ([email protected])
 */
public class ResultWrapper {
    public ResultWrapper(ResultSet rs) {
        this.rs = rs;
        this.updateCount = -1;
        this.insertOID = -1;
    }

    public ResultWrapper(int updateCount, long insertOID) {
        this.rs = null;
        this.updateCount = updateCount;
        this.insertOID = insertOID;
    }

    public ResultSet getResultSet() {
        return rs;
    }

    public int getUpdateCount() {
        return updateCount;
    }

    public long getInsertOID() {
        return insertOID;
    }

    public ResultWrapper getNext() {
        return next;
    }

    public void append(ResultWrapper newResult) {
        ResultWrapper tail = this;
        while (tail.next != null)
            tail = tail.next;

        tail.next = newResult;
    }

    private final ResultSet rs;
    private final int updateCount;
    private final long insertOID;
    private ResultWrapper next;
}