schemagenerator.java

基于Java开发的Data Object自动生成器

// Copyright 2000-2001, Hansky Inc. All Rights Reserved.
// Confidential and Propritary Information of Hansky, Inc.
// @(#)SchemaGenerator.java, 1.0, 03/28/2001
package com.hansky.tools.codewizard;

import java.io.*;
import java.util.*;

import com.hansky.intf.chtml.*;
import com.hansky.util.*;

/**
 * A class generator which creates database schema.
 *
 * @author 	Kaiyang Liu
 * @version	1.0, 03/28/2001
 */
public class SchemaGenerator extends CodeWizard {
    public SchemaGenerator() {
	super();
    }

    protected void doit() {
	for (Enumeration e = props.keys(); e.hasMoreElements();) {
	    String s = (String)e.nextElement();

	    if ("fields".equals(s)) {
		printFields();
	    } else {
		printValue(s);
	    }
	}
    }

    /**
     * The data format for fields is like:
     * name,String,col_name,SQLType,SchemaType
     */
    void printFields() {
	StringBuffer sb = new StringBuffer(4096);
	// read fieldName|javaType
	String pairs[] = StringUtil.split(props.getProperty("fields"), ", \t");

	// print field declaration part
	for (int i = 0; i < pairs.length; i+=5) {
	    String column = pairs[i+2];
	    String type = pairs[i+4];

	    sb.append("\t" + column + "\t\t" + type);
	    if (i < (pairs.length - 5)) {
		sb.append(",\n");
	    }
	}

	values.put("main", sb.toString());
    }

    public static void main(String argv[]) throws IOException {
	new SchemaGenerator().start(argv);
    }
}