arecorderbeancreator.java

java bean生成器

package turing;

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.util.Hashtable;
import java.util.Vector;

class ARecorderBeanCreator
{
	Hashtable  ht_columnType;
	Hashtable  ht_default;	
	String tableName;
	String packageName;	
		
	ARecorderBeanCreator(String tableName,String packageName)
	{
		this.tableName=tableName;
		this.packageName=packageName;
		
		ht_columnType=new Hashtable();
		ht_columnType.put("char","String");
		ht_columnType.put("varchar","String");
		ht_columnType.put("datetime","String");			
		ht_columnType.put("int","int");		
		ht_columnType.put("bit","boolean");		
		ht_columnType.put("decimal","double");
		
		ht_default=new Hashtable();
		ht_default.put("char","null");
		ht_default.put("varchar","null");		
		ht_default.put("datetime","null");			
		ht_default.put("int","0");		
		ht_default.put("bit","true");		
		ht_default.put("decimal","0.0");				
	}
	
	String abc2Abc(String abc)
	{
		return abc.substring(0,1).toUpperCase()+abc.substring(1);	
	} 
	
	void createARecorderBean(Vector v_col) throws Exception
	{
        BufferedWriter out = new BufferedWriter(new FileWriter("com/"+tableName+".java"));
        
 		out.write("package "+packageName+";\n");
		out.write("public class "+tableName+"\n{\n");
		
		createColumnDeclare(v_col,out);

		out.write("\n\t public "+tableName+"()\n\t {\n");
		createDefaultValue(v_col,out);
		out.write("\t }\n");
		
		createSetGet(v_col,out);
		
		out.write("}\n");
        out.close();
	}
	
	void createDefaultValue(Vector v_col,BufferedWriter out) throws Exception
	{
		for(int i=0;i<v_col.size();i++)
		{
			Column col=(Column)v_col.get(i);
			out.write("\t\t "+col.name +"="+ht_default.get(col.type)+";\n");					
		}		
	}
		
	void createSetGet(Vector v_col,BufferedWriter out) throws Exception
	{
		for(int i=0;i<v_col.size();i++)
		{	
			Column col=(Column)v_col.get(i);			
			out.write("\n");
						
			out.write("\t public void set"+abc2Abc(col.name)+"("+ht_columnType.get(col.type)+" "+col.name+")\n");
			out.write("\t {\n");
			out.write("\t\t this."+col.name+"="+col.name+";\n");
			out.write("\t }\n\n");
		
			out.write("\t public "+ht_columnType.get(col.type)+" get"+abc2Abc(col.name)+"()\n");
			out.write("\t {\n");
			out.write("\t 	return "+col.name+";\n");
			out.write("\t }\n");
		}		
	}
	
	void createColumnDeclare(Vector v_col,BufferedWriter out) throws Exception
	{
		for(int i=0;i<v_col.size();i++)
		{
			Column col=(Column)v_col.get(i);
			out.write("\t private "+ht_columnType.get(col.type)+" "+col.name +";\n");			
		}		
	}		
}