booleantype.java

用Java实现的23个常用设计模式源代码

//$Id: BooleanType.java,v 1.5.2.6 2003/11/29 10:22:23 oneovthafew Exp $
package net.sf.hibernate.type;

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

/**
 * <tt>boolean</tt>: A type that maps an SQL BIT to a Java Boolean.
 * @author Gavin King
 */
public class BooleanType extends PrimitiveType implements DiscriminatorType {
	
	private static final String TRUE = "1";
	private static final String FALSE = "0";
	
	public Object get(ResultSet rs, String name) throws SQLException {
		return rs.getBoolean(name) ? Boolean.TRUE : Boolean.FALSE;
	}
	
	public Class getPrimitiveClass() {
		return boolean.class;
	}
	
	public Class getReturnedClass() {
		return Boolean.class;
	}
	
	public void set(PreparedStatement st, Object value, int index)
	throws SQLException {
		st.setBoolean( index, ( (Boolean) value ).booleanValue() );
	}
	
	public int sqlType() {
		return Types.BIT;
	}
	
	public String getName() { return "boolean"; }
	
	public String objectToSQLString(Object value) throws Exception {
		return ( ( (Boolean) value ).booleanValue() ) ? TRUE : FALSE;
	}
	
	public Object stringToObject(String xml) throws Exception {
		return fromString(xml);
	}
	
	public Object fromString(String xml) {
		return Boolean.valueOf(xml);
	}
	
}