com.logicbus.kvalue.xscript.list.KVLLPop Maven / Gradle / Ivy
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;
/**移除并返回列表 key 的头元素
* @author zhongyi
*
*/
public class KVLLPop extends KVRowOperation {
protected String block = "false";
public KVLLPop(String tag, Logiclet p) {
super(tag, p);
}
@Override
public void configure(Properties p){
super.configure(p);
block=PropertiesConstants.getRaw(p, "block", block);
}
@Override
protected void onExecute(KeyValueRow row, Map root, Map current,
LogicletContext ctx, ExecuteWatcher watcher) {
if (row instanceof ListRow){
ListRow r = (ListRow)row;
ctx.SetValue(id, r.leftPop(getBoolean(ctx.transform(block), false)));
}
}
}