com.logicbus.kvalue.xscript.set.KVSDiff Maven / Gradle / Ivy
package com.logicbus.kvalue.xscript.set;
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.SetRow;
/**
* 返回一个集合的全部成员，该集合是所有给定集合之间的差集。
* 不存在的 key 被视为空集。
*
* @author zhongyi
*
*/
public class KVSDiff extends KVRowOperation {
protected String others = "";
protected String delimeter = ";";
protected String tag = "data";
public KVSDiff(String tag, Logiclet p) {
super(tag, p);
}
@Override
public void configure(Properties p) {
super.configure(p);
others = PropertiesConstants.getRaw(p, "others", others);
delimeter = PropertiesConstants.getRaw(p, "delimeter", delimeter);
tag = PropertiesConstants.getRaw(p, "tag", tag);
}
@Override
protected void onExecute(KeyValueRow row, Map root, Map current,
LogicletContext ctx, ExecuteWatcher watcher) {
if (row instanceof SetRow) {
SetRow r = (SetRow) row;
current.put(ctx.transform(tag), r.diff(ctx.transform(others).split(delimeter)));
}
}
}