com.alogic.xscript.plugins.Substr Maven / Gradle / Ivy
package com.alogic.xscript.plugins;
import org.apache.commons.lang3.StringUtils;
import com.alogic.xscript.AbstractLogiclet;
import com.alogic.xscript.ExecuteWatcher;
import com.alogic.xscript.Logiclet;
import com.alogic.xscript.LogicletContext;
import com.alogic.xscript.doc.XsObject;
import com.anysoft.util.Properties;
import com.anysoft.util.PropertiesConstants;
/**
* 对取值取子字符串，然后设为变量
*
* @author duanyy
* @version 1.6.8.4 [20170329 duanyy]
* - 只取context变量，不取文档属性变量
*
* @version 1.6.8.14 [20170509 duanyy]
* - 增加xscript的中间文档模型,以便支持多种报文协议
*
*/
public class Substr extends AbstractLogiclet {
protected String id;
protected String value;
protected String begin;
protected String length;
public Substr(String tag, Logiclet p) {
super(tag, p);
}
public void configure(Properties p){
super.configure(p);
id = PropertiesConstants.getString(p,"id","",true);
value = PropertiesConstants.getRaw(p,"value", "");
begin = PropertiesConstants.getRaw(p,"start", "0");
length = PropertiesConstants.getRaw(p, "length", "-1");
}
@Override
protected void onExecute(XsObject root,XsObject current, LogicletContext ctx, ExecuteWatcher watcher) {
if (StringUtils.isNotEmpty(id)){
String v = ctx.transform(value);
int start = getInt(ctx,begin,0);
int len = getInt(ctx,length,-1);
start = start < 0 || start > v.length() ? 0 : start;
len = len < 0 || start + len > v.length() ? v.length() - start : len;
ctx.SetValue(id, v.substring(start,start + len));
}
}
public int getInt(Properties p,String pattern,int dft){
String v = p.transform(pattern);
if (StringUtils.isNotEmpty(v)){
try {
return Integer.parseInt(v);
}catch (NumberFormatException ex){
return dft;
}
}
return dft;
}
}