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Diffstat (limited to 'src/org/traccar/processing/ComputedAttributesHandler.java')
-rw-r--r-- | src/org/traccar/processing/ComputedAttributesHandler.java | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/src/org/traccar/processing/ComputedAttributesHandler.java b/src/org/traccar/processing/ComputedAttributesHandler.java deleted file mode 100644 index c346661d3..000000000 --- a/src/org/traccar/processing/ComputedAttributesHandler.java +++ /dev/null @@ -1,129 +0,0 @@ -/* - * Copyright 2017 Anton Tananaev (anton@traccar.org) - * Copyright 2017 Andrey Kunitsyn (andrey@traccar.org) - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -package org.traccar.processing; - -import java.lang.reflect.InvocationTargetException; -import java.lang.reflect.Method; -import java.util.Arrays; -import java.util.Collection; -import java.util.Collections; -import java.util.HashSet; -import java.util.Map; -import java.util.Set; - -import io.netty.channel.ChannelHandler; -import org.apache.commons.jexl2.JexlEngine; -import org.apache.commons.jexl2.JexlException; -import org.apache.commons.jexl2.MapContext; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; -import org.traccar.BaseDataHandler; -import org.traccar.Context; -import org.traccar.model.Attribute; -import org.traccar.model.Device; -import org.traccar.model.Position; - -@ChannelHandler.Sharable -public class ComputedAttributesHandler extends BaseDataHandler { - - private static final Logger LOGGER = LoggerFactory.getLogger(ComputedAttributesHandler.class); - - private JexlEngine engine; - - private boolean mapDeviceAttributes; - - public ComputedAttributesHandler() { - engine = new JexlEngine(); - engine.setStrict(true); - engine.setFunctions(Collections.singletonMap("math", (Object) Math.class)); - if (Context.getConfig() != null) { - mapDeviceAttributes = Context.getConfig().getBoolean("processing.computedAttributes.deviceAttributes"); - } - } - - private MapContext prepareContext(Position position) { - MapContext result = new MapContext(); - if (mapDeviceAttributes) { - Device device = Context.getIdentityManager().getById(position.getDeviceId()); - if (device != null) { - for (Object key : device.getAttributes().keySet()) { - result.set((String) key, device.getAttributes().get(key)); - } - } - } - Set<Method> methods = new HashSet<>(Arrays.asList(position.getClass().getMethods())); - methods.removeAll(Arrays.asList(Object.class.getMethods())); - for (Method method : methods) { - if (method.getName().startsWith("get") && method.getParameterTypes().length == 0) { - String name = Character.toLowerCase(method.getName().charAt(3)) + 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) { - LOGGER.warn("Attribute reflection error", error); - } - } - } - return result; - } - - public Object computeAttribute(Attribute attribute, Position position) throws JexlException { - return engine.createExpression(attribute.getExpression()).evaluate(prepareContext(position)); - } - - @Override - protected Position handlePosition(Position position) { - Collection<Attribute> attributes = Context.getAttributesManager().getItems( - Context.getAttributesManager().getAllDeviceItems(position.getDeviceId())); - for (Attribute attribute : attributes) { - if (attribute.getAttribute() != null) { - Object result = null; - try { - result = computeAttribute(attribute, position); - } catch (JexlException error) { - LOGGER.warn("Attribute computation error", error); - } - if (result != null) { - try { - switch (attribute.getType()) { - case "number": - Number numberValue = (Number) result; - position.getAttributes().put(attribute.getAttribute(), numberValue); - break; - case "boolean": - Boolean booleanValue = (Boolean) result; - position.getAttributes().put(attribute.getAttribute(), booleanValue); - break; - default: - position.getAttributes().put(attribute.getAttribute(), result.toString()); - } - } catch (ClassCastException error) { - LOGGER.warn("Attribute cast error", error); - } - } - } - } - return position; - } - -} |