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package com.sun.jdo.api.persistence.support;

import java.util.List;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.DatabaseMetaData;

/**
 * SpecialDBOperation interface is defined for database specific operations.
 * @author Shing Wai Chan
 */
public interface SpecialDBOperation {

    /**
     * This method is called immediately after an instance implementing this
     * interface is created. The implementation can initialize itself using
     * supplied metaData.
     * @param metaData DatbaseMetaData of the database for which an instance
     * implementing this interface is ingratiated.
     * @param identifier Identifier of object used to obtain databaseMetaData.
     * This can be null in non managed environment.
     */
    public void initialize(DatabaseMetaData metaData,
        String identifier) throws SQLException;
    /**
     * Defines column type for result.
     * @param ps java.sql.PreparedStatement
     * @param columns List of ColumnElement corresponding to select clause
     */
    public void defineColumnTypeForResult(
        PreparedStatement ps, List columns) throws SQLException;

    /**
     * Binds specified value to parameter at specified index that is bound to
     * CHAR column.
     * @param ps java.sql.PreparedStatement
     * @param index Index of paramater marker in ps.
     * @param strVal value that needs to bound.
     * @param length length of the column to which strVal is bound.
     */
    public void bindFixedCharColumn(PreparedStatement ps,
         int index, String strVal, int length) throws SQLException;

}