stringtype.java

用Java实现的23个常用设计模式源代码

//$Id: StringType.java,v 1.4.2.4 2003/11/21 16:06:40 oneovthafew Exp $
package net.sf.hibernate.type;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;

import net.sf.hibernate.util.EqualsHelper;

/**
 * <tt>string</tt>: A type that maps an SQL VARCHAR to a Java String.
 * @author Gavin King
 */
public class StringType extends ImmutableType implements DiscriminatorType {
	
	public Object get(ResultSet rs, String name) throws SQLException {
		return rs.getString(name);
	}
	
	public Class getReturnedClass() {
		return String.class;
	}
	
	public void set(PreparedStatement st, Object value, int index) throws SQLException {
		st.setString(index, (String) value);
	}
	
	public int sqlType() {
		return Types.VARCHAR;
	}
	
	public String getName() { return "string"; }
	
	public String objectToSQLString(Object value) throws Exception {
		return '\'' + (String) value + '\'';
	}
	
	public Object stringToObject(String xml) throws Exception {
		return xml;
	}
	
	public boolean equals(Object x, Object y) {
		return EqualsHelper.equals(x, y);
	}
	public String toString(Object value) {
		return (String) value;
	}
	
	public Object fromString(String xml) {
		return xml;
	}
	
}