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基于Redis的KValue数据库实现

There is a newer version: 1.6.17

package com.logicbus.kvalue.xscript.list;

import java.util.Map;

import com.alogic.xscript.ExecuteWatcher;
import com.alogic.xscript.Logiclet;
import com.alogic.xscript.LogicletContext;
import com.logicbus.kvalue.xscript.KVRowOperation;
import com.anysoft.util.Properties;
import com.anysoft.util.PropertiesConstants;
import com.logicbus.kvalue.core.KeyValueRow;
import com.logicbus.kvalue.core.ListRow;

public class KVLGet extends KVRowOperation {
	protected String index = "0";
	protected String dft = "";
	
	public KVLGet(String tag, Logiclet p) {
		super(tag, p);
	}

	@Override
	public void configure(Properties p){
		super.configure(p);
		
		index = PropertiesConstants.getRaw(p,"index",index);
		dft = PropertiesConstants.getRaw(p,"dft",dft);
	}
	@Override
	protected void onExecute(KeyValueRow row, Map root, Map current,
			LogicletContext ctx, ExecuteWatcher watcher) {
		if (row instanceof ListRow){
			ListRow r = (ListRow)row;
			
			long offset = getLong(ctx.transform(index),0);
			String dftValue = ctx.transform(dft);
			
			ctx.SetValue(id, r.get(offset, dftValue));
		}

	}

}