propertymapconstructorgeneratorextension.java

c3p0数据库连接池实现源码

/*
 * Distributed as part of c3p0 v.0.9.1-pre6
 *
 * Copyright (C) 2005 Machinery For Change, Inc.
 *
 * Author: Steve Waldman <[e-mail]>
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 2.1, as 
 * published by the Free Software Foundation.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this software; see the file LICENSE.  If not, write to the
 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 */


package com.mchange.v2.codegen.bean;

import java.util.*;

import java.lang.reflect.Modifier;
import java.io.IOException;
import com.mchange.v2.codegen.CodegenUtils;
import com.mchange.v2.codegen.IndentedWriter;

public class PropertyMapConstructorGeneratorExtension implements GeneratorExtension 
{
    int ctor_modifiers = Modifier.PUBLIC;

    public Collection extraGeneralImports()
    { return Collections.EMPTY_SET; }

    public Collection extraSpecificImports()
    {
	Set set = new HashSet();
	set.add("java.util.Map");
	return set;
    }

    public Collection extraInterfaceNames()
    { return Collections.EMPTY_SET; }

    public void generate(ClassInfo info, Class superclassType, Property[] props, Class[] propTypes, IndentedWriter iw)
	throws IOException
    {
	iw.print( CodegenUtils.getModifierString( ctor_modifiers ) );
	iw.print(' ' + info.getClassName() + "( Map map )");
	iw.println("{");
	iw.upIndent();

	iw.println( "Object raw;" );
	for (int i = 0, len = props.length; i < len; ++i)
	    {
		Property prop   = props[i];
		String propName = prop.getName();
		Class propType  = propTypes[i];
		iw.println("raw = map.get( \"" + propName + "\" );");
		iw.println("if (raw != null)");
		iw.println("{");
		iw.upIndent();

		iw.print("this." + propName + " = ");
		if ( propType == boolean.class )
		    iw.println( "((Boolean) raw ).booleanValue();" );
		else if ( propType == byte.class )
		    iw.println( "((Byte) raw ).byteValue();" );
		else if ( propType == char.class )
		    iw.println( "((Character) raw ).charValue();" );
		else if ( propType == short.class )
		    iw.println( "((Short) raw ).shortValue();" );
		else if ( propType == int.class )
		    iw.println( "((Integer) raw ).intValue();" );
		else if ( propType == long.class )
		    iw.println( "((Long) raw ).longValue();" );
		else if ( propType == float.class )
		    iw.println( "((Float) raw ).floatValue();" );
		else if ( propType == double.class )
		    iw.println( "((Double) raw ).doubleValue();" );
		iw.println("raw = null;");

		iw.downIndent();
		iw.println("}");
	    }

	iw.downIndent();
	iw.println("}");
    }
}