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lburgazzoli pushed a commit to branch master
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The following commit(s) were added to refs/heads/master by this push:
new 965e098 CAMEL-14933: Remove dependencies on spring in
GenerateConfigurerMojo
965e098 is described below
commit 965e098e2b0b369dec27c3e10aa889eae078888a
Author: lburgazzoli <[email protected]>
AuthorDate: Mon Apr 20 14:32:21 2020 +0200
CAMEL-14933: Remove dependencies on spring in GenerateConfigurerMojo
---
.../camel/tooling/util/ReflectionHelper.java | 215 +++++++++++++++++++++
tooling/maven/camel-package-maven-plugin/pom.xml | 4 -
.../maven/packaging/GenerateConfigurerMojo.java | 5 +-
3 files changed, 218 insertions(+), 6 deletions(-)
diff --git
a/tooling/camel-tooling-util/src/main/java/org/apache/camel/tooling/util/ReflectionHelper.java
b/tooling/camel-tooling-util/src/main/java/org/apache/camel/tooling/util/ReflectionHelper.java
new file mode 100644
index 0000000..af0178f
--- /dev/null
+++
b/tooling/camel-tooling-util/src/main/java/org/apache/camel/tooling/util/ReflectionHelper.java
@@ -0,0 +1,215 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.tooling.util;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.Arrays;
+import java.util.Objects;
+
+/**
+ * Helper for working with reflection on classes.
+ * <p/>
+ * This code is a copy of org.apache.camel.util.ReflectionHelper to avoid
cyclic dependencies between artifacts and
+ * camel maven plugins.
+ * This code is based on org.apache.camel.spring.util.ReflectionUtils class.
+ */
+public final class ReflectionHelper {
+
+ private ReflectionHelper() {
+ // utility class
+ }
+
+ /**
+ * Callback interface invoked on each field in the hierarchy.
+ */
+ @FunctionalInterface
+ public interface FieldCallback {
+
+ /**
+ * Perform an operation using the given field.
+ *
+ * @param field the field to operate on
+ */
+ void doWith(Field field) throws IllegalArgumentException,
IllegalAccessException;
+ }
+
+ /**
+ * Action to take on each method.
+ */
+ @FunctionalInterface
+ public interface MethodCallback {
+
+ /**
+ * Perform an operation using the given method.
+ *
+ * @param method the method to operate on
+ */
+ void doWith(Method method) throws IllegalArgumentException,
IllegalAccessException;
+ }
+
+ /**
+ * Action to take on each class.
+ */
+ @FunctionalInterface
+ public interface ClassCallback {
+
+ /**
+ * Perform an operation using the given class.
+ *
+ * @param clazz the class to operate on
+ */
+ void doWith(Class clazz) throws IllegalArgumentException,
IllegalAccessException;
+ }
+
+ /**
+ * Perform the given callback operation on the nested (inner) classes.
+ *
+ * @param clazz class to start looking at
+ * @param cc the callback to invoke for each inner class (excluding the
class itself)
+ */
+ public static void doWithClasses(Class<?> clazz, ClassCallback cc) throws
IllegalArgumentException {
+ // and then nested classes
+ Class[] classes = clazz.getDeclaredClasses();
+ for (Class aClazz : classes) {
+ try {
+ cc.doWith(aClazz);
+ } catch (IllegalAccessException ex) {
+ throw new IllegalStateException("Shouldn't be illegal to
access class '" + aClazz.getName() + "': " + ex);
+ }
+ }
+ }
+
+ /**
+ * Invoke the given callback on all fields in the target class, going up
the
+ * class hierarchy to get all declared fields.
+ * @param clazz the target class to analyze
+ * @param fc the callback to invoke for each field
+ */
+ public static void doWithFields(Class<?> clazz, FieldCallback fc) throws
IllegalArgumentException {
+ // Keep backing up the inheritance hierarchy.
+ Class<?> targetClass = clazz;
+ do {
+ Field[] fields = targetClass.getDeclaredFields();
+ for (Field field : fields) {
+ try {
+ fc.doWith(field);
+ } catch (IllegalAccessException ex) {
+ throw new IllegalStateException("Shouldn't be illegal to
access field '" + field.getName() + "': " + ex);
+ }
+ }
+ targetClass = targetClass.getSuperclass();
+ }
+ while (targetClass != null && targetClass != Object.class);
+ }
+
+ /**
+ * Perform the given callback operation on all matching methods of the
given
+ * class and superclasses (or given interface and super-interfaces).
+ * <p/>
+ * <b>Important:</b> This method does not take the
+ * {@link java.lang.reflect.Method#isBridge() bridge methods} into account.
+ *
+ * @param clazz class to start looking at
+ * @param mc the callback to invoke for each method
+ */
+ public static void doWithMethods(Class<?> clazz, MethodCallback mc) throws
IllegalArgumentException {
+ // Keep backing up the inheritance hierarchy.
+ Method[] methods = clazz.getDeclaredMethods();
+ for (Method method : methods) {
+ if (method.isBridge()) {
+ // skip the bridge methods which in Java 8 leads to problems
with inheritance
+ // see https://bugs.openjdk.java.net/browse/JDK-6695379
+ continue;
+ }
+ try {
+ mc.doWith(method);
+ } catch (IllegalAccessException ex) {
+ throw new IllegalStateException("Shouldn't be illegal to
access method '" + method.getName() + "': " + ex);
+ }
+ }
+ if (clazz.getSuperclass() != null) {
+ doWithMethods(clazz.getSuperclass(), mc);
+ } else if (clazz.isInterface()) {
+ for (Class<?> superIfc : clazz.getInterfaces()) {
+ doWithMethods(superIfc, mc);
+ }
+ }
+ }
+
+ /**
+ * Attempt to find a {@link Method} on the supplied class with the
supplied name
+ * and parameter types. Searches all superclasses up to {@code Object}.
+ * <p>Returns {@code null} if no {@link Method} can be found.
+ * @param clazz the class to introspect
+ * @param name the name of the method
+ * @param paramTypes the parameter types of the method
+ * (may be {@code null} to indicate any signature)
+ * @return the Method object, or {@code null} if none found
+ */
+ public static Method findMethod(Class<?> clazz, String name, Class<?>...
paramTypes) {
+ Objects.requireNonNull(clazz, "Class must not be null");
+ Objects.requireNonNull(name, "Method name must not be null");
+ Class<?> searchType = clazz;
+ while (searchType != null) {
+ Method[] methods = searchType.isInterface() ?
searchType.getMethods() : searchType.getDeclaredMethods();
+ for (Method method : methods) {
+ if (name.equals(method.getName()) && (paramTypes == null ||
Arrays.equals(paramTypes, method.getParameterTypes()))) {
+ return method;
+ }
+ }
+ searchType = searchType.getSuperclass();
+ }
+ return null;
+ }
+
+ public static void setField(Field f, Object instance, Object value) {
+ try {
+ boolean oldAccessible = f.isAccessible();
+ boolean shouldSetAccessible = !Modifier.isPublic(f.getModifiers())
&& !oldAccessible;
+ if (shouldSetAccessible) {
+ f.setAccessible(true);
+ }
+ f.set(instance, value);
+ if (shouldSetAccessible) {
+ f.setAccessible(oldAccessible);
+ }
+ } catch (Exception ex) {
+ throw new UnsupportedOperationException("Cannot inject value of
class: " + value.getClass() + " into: " + f);
+ }
+ }
+
+ public static Object getField(Field f, Object instance) {
+ try {
+ boolean oldAccessible = f.isAccessible();
+ boolean shouldSetAccessible = !Modifier.isPublic(f.getModifiers())
&& !oldAccessible;
+ if (shouldSetAccessible) {
+ f.setAccessible(true);
+ }
+ Object answer = f.get(instance);
+ if (shouldSetAccessible) {
+ f.setAccessible(oldAccessible);
+ }
+ return answer;
+ } catch (Exception ex) {
+ // ignore
+ }
+ return null;
+ }
+
+}
diff --git a/tooling/maven/camel-package-maven-plugin/pom.xml
b/tooling/maven/camel-package-maven-plugin/pom.xml
index cc96052..4d6a648 100644
--- a/tooling/maven/camel-package-maven-plugin/pom.xml
+++ b/tooling/maven/camel-package-maven-plugin/pom.xml
@@ -124,10 +124,6 @@
<artifactId>roaster-jdt</artifactId>
<version>${roaster-version}</version>
</dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-core</artifactId>
- </dependency>
<!-- jandex for annotation processing -->
<dependency>
diff --git
a/tooling/maven/camel-package-maven-plugin/src/main/java/org/apache/camel/maven/packaging/GenerateConfigurerMojo.java
b/tooling/maven/camel-package-maven-plugin/src/main/java/org/apache/camel/maven/packaging/GenerateConfigurerMojo.java
index a6d38f3..e1f941f 100644
---
a/tooling/maven/camel-package-maven-plugin/src/main/java/org/apache/camel/maven/packaging/GenerateConfigurerMojo.java
+++
b/tooling/maven/camel-package-maven-plugin/src/main/java/org/apache/camel/maven/packaging/GenerateConfigurerMojo.java
@@ -44,7 +44,8 @@ import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import org.jboss.jandex.Index;
import org.jboss.jandex.IndexReader;
-import org.springframework.util.ReflectionUtils;
+
+import static org.apache.camel.tooling.util.ReflectionHelper.doWithMethods;
/**
* Generate configurer classes from @Configuer annotated classes.
@@ -169,7 +170,7 @@ public class GenerateConfigurerMojo extends
AbstractGeneratorMojo {
Class clazz = projectClassLoader.loadClass(fqn);
// find all public setters
- ReflectionUtils.doWithMethods(clazz, m -> {
+ doWithMethods(clazz, m -> {
boolean setter = m.getName().length() >= 4 &&
m.getName().startsWith("set") && Character.isUpperCase(m.getName().charAt(3));
setter &= Modifier.isPublic(m.getModifiers()) &&
m.getParameterCount() == 1;
setter &= filterSetter(m);
