diff options
Diffstat (limited to 'src/org')
| -rw-r--r-- | src/org/traccar/processing/ComputedAttributesHandler.java | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/src/org/traccar/processing/ComputedAttributesHandler.java b/src/org/traccar/processing/ComputedAttributesHandler.java index ea7c0aa1d..b158431ef 100644 --- a/src/org/traccar/processing/ComputedAttributesHandler.java +++ b/src/org/traccar/processing/ComputedAttributesHandler.java @@ -16,7 +16,10 @@ */ package org.traccar.processing; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; import java.util.Collection; +import java.util.Map; import org.apache.commons.jexl2.JexlEngine; import org.apache.commons.jexl2.JexlException; @@ -36,10 +39,32 @@ public class ComputedAttributesHandler extends BaseDataHandler { engine.setStrict(true); } + private MapContext prepareContext(Position position) { + MapContext result = new MapContext(); + Method[] methods = position.getClass().getMethods(); + for (Method method : methods) { + if (method.getName().startsWith("get") && method.getParameterTypes().length == 0 + && !method.getName().equals("getClass")) { + String name = method.getName().substring(3, 4).toLowerCase() + method.getName().substring(4); + + try { + if (!method.getReturnType().equals(Map.class)) { + result.set(name, method.invoke(position)); + } else { + for (Object key : ((Map) method.invoke(position)).keySet()) { + result.set((String) key, ((Map) method.invoke(position)).get(key)); + } + } + } catch (IllegalAccessException | InvocationTargetException error) { + Log.warning(error); + } + } + } + return result; + } + public Object computeAttribute(Attribute attribute, Position position) throws JexlException { - MapContext expressionContext = new MapContext(); - expressionContext.set("position", position); - return engine.createExpression(attribute.getExpression()).evaluate(expressionContext); + return engine.createExpression(attribute.getExpression()).evaluate(prepareContext(position)); } @Override |