?? typehandler.java
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/*
* Copyright 2004 Clinton Begin
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.ibatis.sqlmap.engine.type;
import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
* Interface for getting data into, and out of a mapped statement
*/
public interface TypeHandler {
/**
* Sets a parameter on a prepared statement
*
* @param ps - the prepared statement
* @param i - the parameter index
* @param parameter - the parameter value
* @param jdbcType - the JDBC type of the parameter
*
* @throws SQLException if setting the parameter fails
*/
public void setParameter(PreparedStatement ps, int i, Object parameter, String jdbcType)
throws SQLException;
/**
* Gets a column from a result set
*
* @param rs - the result set
* @param columnName - the column name to get
*
* @return - the column value
*
* @throws SQLException if getting the value fails
*/
public Object getResult(ResultSet rs, String columnName)
throws SQLException;
/**
* Gets a column from a result set
*
* @param rs - the result set
* @param columnIndex - the column to get (by index)
*
* @return - the column value
*
* @throws SQLException if getting the value fails
*/
public Object getResult(ResultSet rs, int columnIndex)
throws SQLException;
/**
* Gets a column from a callable statement
*
* @param cs - the statement
* @param columnIndex - the column to get (by index)
*
* @return - the column value
*
* @throws SQLException if getting the value fails
*/
public Object getResult(CallableStatement cs, int columnIndex)
throws SQLException;
/**
* Converts the String to the type that this handler deals with
*
* @param s - the String value
*
* @return - the converted value
*/
public Object valueOf(String s);
/**
* Compares two values (that this handler deals with) for equality
*
* @param object - one of the objects
* @param string - the other object as a String
*
* @return - true if they are equal
*/
public boolean equals(Object object, String string);
}
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