com.tsc9526.monalisa.orm.meta.MetaPartition Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of monalisa-orm Show documentation
Very simple database ORM
There is a newer version: 2.2.0
/*******************************************************************************************
 *	Copyright (c) 2016, zzg.zhou([email protected])
 * 
 *  Monalisa is free software: you can redistribute it and/or modify
 *	it under the terms of the GNU Lesser General Public License as published by
 *	the Free Software Foundation, either version 3 of the License, or
 *	(at your option) any later version.

 *	This program 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 program.  If not, see .
 *******************************************************************************************/
package com.tsc9526.monalisa.orm.meta;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.tsc9526.monalisa.orm.model.Model;
import com.tsc9526.monalisa.orm.partition.DatePartitionTable;
import com.tsc9526.monalisa.orm.partition.Partition;
import com.tsc9526.monalisa.tools.clazz.MelpClass;
import com.tsc9526.monalisa.tools.misc.MelpException;

/**
 * 
 * @author zzg.zhou([email protected])
 */
public class MetaPartition implements java.io.Serializable {
	 
	private static final long serialVersionUID = 6730997065415685121L;
	
	public static List parsePartitions(String pts){
		try{
			List metaPartitions=new ArrayList();
			
			if(pts!=null && pts.trim().length()>0){
				pts=pts.trim();
				if(pts.startsWith("[") || pts.startsWith("{")){
					JsonElement je=new JsonParser().parse(pts);
					if(je.isJsonArray()){
						JsonArray array=je.getAsJsonArray();
						for(int i=0;i0){
							MetaPartition mp=parseFromString(p);
							
							metaPartitions.add(mp);
						}
					}					
				}		
			}
			return metaPartitions;		
		}catch(Exception e){
			throw new RuntimeException("Invalid partition: "+pts,e);
		}		
	}
	
	public static MetaPartition parseFromJson(JsonObject json){
		MetaPartition mp=new MetaPartition();
		
		mp.tablePrefix = json.get("prefix").getAsString();
		mp.clazz       = json.get("class").getAsString();
		
		JsonArray args=json.get("args").getAsJsonArray();
		mp.args=new String[args.size()];
		if(args.size()>0){
			for(int i=0;i0){
			String[] ps=parameters.split(",");
			mp.args=new String[ps.length];
			for(int i=0;i tables=new ArrayList();
	
	private Partition> partition;
	
	public MetaPartition(){			
	}
	
	@SuppressWarnings("unchecked")
	public Partition> getPartition(){
		try{
			if(partition==null){
				partition=(Partition>)MelpClass.forName(getClazz()).newInstance();
			}
			return partition;
		}catch(Exception e){
			return MelpException.throwRuntimeException(e);
		}		
	}
	
	public void clearTable(){
		tables.clear();
	}
	
	public void addTable(MetaTable table){
		tables.add(table);
		
		table.setPartition(this);
		
		Collections.sort(tables,new Comparator(){
 			public int compare(MetaTable o1, MetaTable o2) {
 				int r=o1.getName().compareTo(o2.getName());
 				return -r;
			}			
		});
	}
	
	public MetaTable getTable(){
		if(tables.size()>0){
			MetaTable table= tables.get(0);			 
			return table;
		}else{
			return null;
		}
	}
	
	
	public String getTablePrefix() {
		return tablePrefix;
	}
	public void setTablePrefix(String partitionPrefix) {
		this.tablePrefix = partitionPrefix;
	}
	
	public String getClazz() {
		return clazz;
	}
	public void setClazz(String partitionClass) {
		this.clazz = partitionClass;
	}
	
	public String[] getArgs() {
		return args;
	}
	public void setArgs(String[] partitionArgs) {
		this.args = partitionArgs;
	}
}