From ac6d46cbd88aea140d114799c09816a9ee037f1b Mon Sep 17 00:00:00 2001
From: PtrMan <robertw89@googlemail.com>
Date: Sun, 19 Aug 2018 16:42:40 +0200
Subject: [PATCH] added MethodReflection
---
.../MethodInvocationOperator.java | 44 ++++++++++++++++++
.../OperatorReflection.java | 45 +++++++++++++++++++
2 files changed, 89 insertions(+)
create mode 100644 src/main/org/opennars/middle/operatorreflection/MethodInvocationOperator.java
create mode 100644 src/main/org/opennars/middle/operatorreflection/OperatorReflection.java
diff --git a/src/main/org/opennars/middle/operatorreflection/MethodInvocationOperator.java b/src/main/org/opennars/middle/operatorreflection/MethodInvocationOperator.java
new file mode 100644
index 0000000..4e017e6
--- /dev/null
+++ b/src/main/org/opennars/middle/operatorreflection/MethodInvocationOperator.java
@@ -0,0 +1,44 @@
+package org.opennars.middle.operatorreflection;
+
+import org.opennars.entity.Task;
+import org.opennars.interfaces.Pluggable;
+import org.opennars.interfaces.Timable;
+import org.opennars.language.Term;
+import org.opennars.operator.Operation;
+import org.opennars.operator.Operator;
+import org.opennars.storage.Memory;
+
+/**
+ * Exposes a method of a object as a callable operator
+ */
+ public class MethodInvocationOperator extends Operator {
+ private Method method;
+ private Object object;
+
+ /**
+ * @param narsOperatorName name of the operator as called by NARS
+ * @param object object of method call
+ * @param method called method
+ */
+ public MethodInvocationOperator(String narsOperatorName, Object object, Method method) {
+ super(narsOperatorName);
+
+ this.object = object;
+ this.method = method;
+ }
+
+ @Override
+ protected List<Task> execute(Operation operation, Term[] args, Memory memory, Timable time) {
+ try {
+ method.invoke(object);
+ }
+ catch (IllegalAccessException e) {
+ // ignore
+ }
+ catch (InvocationTargetException e) {
+ // ignore
+ }
+
+ return null;
+ }
+}
diff --git a/src/main/org/opennars/middle/operatorreflection/OperatorReflection.java b/src/main/org/opennars/middle/operatorreflection/OperatorReflection.java
new file mode 100644
index 0000000..6be1e71
--- /dev/null
+++ b/src/main/org/opennars/middle/operatorreflection/OperatorReflection.java
@@ -0,0 +1,45 @@
+package org.opennars.middle.operatorreflection;
+
+import org.opennars.entity.Task;
+import org.opennars.interfaces.Pluggable;
+import org.opennars.interfaces.Timable;
+import org.opennars.language.Term;
+import org.opennars.operator.Operation;
+import org.opennars.operator.Operator;
+import org.opennars.storage.Memory;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Manages the exposed methods which are callable by Operators from NARS
+ */
+public class OperatorReflection {
+ public Map<String, MethodInvocationOperator> methodOperators = new HashMap<>();
+
+ /**
+ * adds and registers a method without arguments
+ *
+ * @param pluggable used to register the operator
+ * @param narsOperatorName name of the operator as called by NARS
+ * @param object object of method call
+ * @param methodName name of the called method
+ */
+ public void appendAndRegisterMethodWithoutArguments(Pluggable pluggable, String narsOperatorName, Object object, String methodName) throws NoSuchMethodException {
+ Method calledMethod = retMethodByName(object, methodName);
+
+ MethodInvocationOperator operator = new MethodInvocationOperator(narsOperatorName, object, calledMethod);
+
+ // register operator
+ pluggable.addPlugin(operator);
+
+ methodOperators.put(narsOperatorName, operator);
+ }
+
+ protected Method retMethodByName(Object object, String methodName) throws NoSuchMethodException {
+ return object.getClass().getMethod(methodName);
+ }
+}
--
GitLab