• Home
• org.rapidoid
• rapidoid-commons
• 5.4.2
• source code
• Cls.java

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

org.rapidoid.cls.Cls Maven / Gradle / Ivy

package org.rapidoid.cls;

import javassist.*;
import javassist.Modifier;
import javassist.bytecode.CodeAttribute;
import javassist.bytecode.LocalVariableAttribute;
import javassist.bytecode.MethodInfo;
import org.rapidoid.RapidoidThing;
import org.rapidoid.beany.Beany;
import org.rapidoid.collection.AutoExpandingMap;
import org.rapidoid.collection.Coll;
import org.rapidoid.commons.Arr;
import org.rapidoid.commons.Dates;
import org.rapidoid.commons.Err;
import org.rapidoid.commons.Str;
import org.rapidoid.io.IO;
import org.rapidoid.u.U;
import org.rapidoid.util.Msc;
import org.rapidoid.util.TUUID;
import org.rapidoid.var.Var;
import org.rapidoid.var.Vars;

import java.io.Serializable;
import java.lang.annotation.Annotation;
import java.lang.reflect.*;
import java.util.*;
import java.util.Map.Entry;
import java.util.concurrent.ConcurrentMap;
import java.util.regex.Pattern;

/*
 * #%L
 * rapidoid-commons
 * %%
 * Copyright (C) 2014 - 2017 Nikolche Mihajlovski and contributors
 * %%
 * 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.
 * #L%
 */

/**
 * @author Nikolche Mihajlovski
 * @since 2.0.0
 */
public class Cls extends RapidoidThing {

	private static Pattern JRE_CLASS_PATTERN = Pattern
		.compile("^(java|javax|javafx|com\\.sun|sun|com\\.oracle|oracle|jdk|org\\.omg|org\\.w3c).*");

	private static final Map, Class> PRIMITIVE_WRAPPERS = U.map(boolean.class, Boolean.class, byte.class,
		Byte.class, char.class, Character.class, double.class, Double.class, float.class, Float.class, int.class,
		Integer.class, long.class, Long.class, short.class, Short.class, void.class, Void.class);

	private static Set RAPIDOID_CLASSES = U.set(IO.loadLines("rapidoid-classes.txt"));

	private static final Object[] EMPTY_ARRAY = {};

	private Cls() {
	}

	public static TypeKind kindOf(Class type) {
		return TypeKind.ofType(type);
	}

	public static TypeKind kindOf(Object value) {
		return TypeKind.of(value);
	}

	public static void setFieldValue(Object instance, String fieldName, Object value) {
		try {
			for (Class c = instance.getClass(); c.getSuperclass() != null; c = c.getSuperclass()) {
				try {
					Field field = c.getDeclaredField(fieldName);
					field.setAccessible(true);
					field.set(instance, value);
					return;
				} catch (NoSuchFieldException e) {
					// keep searching the filed in the super-class...
				}
			}
		} catch (Exception e) {
			throw U.rte("Cannot set field value!", e);
		}

		throw U.rte("Cannot find the field '%s' in the class '%s'", fieldName, instance.getClass());
	}

	public static void setFieldValue(Field field, Object instance, Object value) {
		try {
			field.setAccessible(true);
			field.set(instance, value);
		} catch (Exception e) {
			throw U.rte("Cannot set field value!", e);
		}
	}

	@SuppressWarnings("unchecked")
	public static  T getFieldValue(Object instance, String fieldName, T defaultValue) {
		try {
			return (T) getFieldValue(instance, fieldName);
		} catch (Exception e) {
			return defaultValue;
		}
	}

	public static Object getFieldValue(Object instance, String fieldName) {
		try {
			for (Class c = instance.getClass(); c.getSuperclass() != null; c = c.getSuperclass()) {
				try {
					Field field = c.getDeclaredField(fieldName);
					return getFieldValue(field, instance);
				} catch (NoSuchFieldException e) {
					// keep searching the filed in the super-class...
				}
			}
		} catch (Exception e) {
			throw U.rte("Cannot get field value!", e);
		}

		throw U.rte("Cannot find the field '%s' in the class '%s'", fieldName, instance.getClass());
	}

	public static Object getFieldValue(Field field, Object instance) {
		try {
			field.setAccessible(true);
			Object value = field.get(instance);

			return value;
		} catch (Exception e) {
			throw U.rte("Cannot get field value!", e);
		}
	}

	public static List getAnnotations(Class clazz) {
		List allAnnotations = U.list();

		try {
			for (Class c = clazz; c.getSuperclass() != null; c = c.getSuperclass()) {
				Annotation[] annotations = c.getDeclaredAnnotations();
				for (Annotation an : annotations) {
					allAnnotations.add(an);
				}
			}

		} catch (Exception e) {
			throw U.rte("Cannot get annotations!", e);
		}

		return allAnnotations;
	}

	public static List getFields(Class clazz) {
		List allFields = U.list();

		try {
			for (Class c = clazz; c.getSuperclass() != null; c = c.getSuperclass()) {
				Field[] fields = c.getDeclaredFields();
				for (Field field : fields) {
					allFields.add(field);
				}
			}

		} catch (Exception e) {
			throw U.rte("Cannot get fields!", e);
		}

		return allFields;
	}

	public static List getFieldsAnnotated(Class clazz, Class annotation) {
		List annotatedFields = U.list();

		try {
			for (Class c = clazz; c.getSuperclass() != null; c = c.getSuperclass()) {
				Field[] fields = c.getDeclaredFields();
				for (Field field : fields) {
					if (field.isAnnotationPresent(annotation)) {
						annotatedFields.add(field);
					}
				}
			}

		} catch (Exception e) {
			throw U.rte("Cannot get annotated fields!", e);
		}

		return annotatedFields;
	}

	public static List getMethods(Class clazz) {
		List methods = U.list();

		try {
			for (Class c = clazz; c.getSuperclass() != null; c = c.getSuperclass()) {
				for (Method method : c.getDeclaredMethods()) {
					methods.add(method);
				}
			}

		} catch (Exception e) {
			throw U.rte("Cannot get methods!", e);
		}

		return methods;
	}

	public static List getMethodsAnnotated(Class clazz, Class annotation) {
		List annotatedMethods = U.list();

		try {
			for (Class c = clazz; c.getSuperclass() != null; c = c.getSuperclass()) {
				Method[] methods = c.getDeclaredMethods();
				for (Method method : methods) {
					if (method.isAnnotationPresent(annotation)) {
						annotatedMethods.add(method);
					}
				}
			}

		} catch (Exception e) {
			throw U.rte("Cannot instantiate class!", e);
		}

		return annotatedMethods;
	}

	public static List getMethodsNamed(Class clazz, String name) {
		List methods = U.list();

		try {
			for (Class c = clazz; c.getSuperclass() != null; c = c.getSuperclass()) {
				for (Method method : c.getDeclaredMethods()) {
					if (method.getName().equals(name)) {
						methods.add(method);
					}
				}
			}

		} catch (Exception e) {
			throw U.rte("Cannot instantiate class!", e);
		}

		return methods;
	}

	public static Method getMethod(Class clazz, String name, Class... parameterTypes) {
		try {
			return clazz.getMethod(name, parameterTypes);
		} catch (NoSuchMethodException e) {
			try {
				return clazz.getDeclaredMethod(name, parameterTypes);
			} catch (NoSuchMethodException e1) {
				throw U.rte("Cannot find method: %s", e, name);
			}
		} catch (SecurityException e) {
			throw U.rte("Cannot access method: %s", e, name);
		}
	}

	public static Method findMethod(Class clazz, String name, Class... parameterTypes) {
		try {
			return clazz.getMethod(name, parameterTypes);
		} catch (NoSuchMethodException e) {
			try {
				return clazz.getDeclaredMethod(name, parameterTypes);
			} catch (NoSuchMethodException e1) {
				return null;
			}
		} catch (SecurityException e) {
			return null;
		}
	}

	public static Field getField(Class clazz, String name) {
		try {
			return clazz.getField(name);
		} catch (NoSuchFieldException e) {
			throw U.rte("Cannot find field: %s", e, name);
		} catch (SecurityException e) {
			throw U.rte("Cannot access field: %s", e, name);
		}
	}

	public static Field findField(Class clazz, String name) {
		try {
			return clazz.getField(name);
		} catch (NoSuchFieldException e) {
			return null;
		} catch (SecurityException e) {
			return null;
		}
	}

	@SuppressWarnings("unchecked")
	public static  T invokeStatic(Method m, Object... args) {
		try {
			m.setAccessible(true);
			return (T) m.invoke(null, args);
		} catch (IllegalAccessException e) {
			throw U.rte("Cannot statically invoke method '%s' with args: %s", e, m.getName(), U.str(args));
		} catch (IllegalArgumentException e) {
			throw U.rte("Cannot statically invoke method '%s' with args: %s", e, m.getName(), U.str(args));
		} catch (InvocationTargetException e) {
			throw U.rte("Cannot statically invoke method '%s' with args: %s", e, m.getName(), U.str(args));
		}
	}

	@SuppressWarnings("unchecked")
	public static  T invoke(Method m, Object target, Object... args) {
		try {
			m.setAccessible(true);
			return (T) m.invoke(target, args);
		} catch (Exception e) {
			throw U.rte("Cannot invoke method '%s' with args: %s", e, m.getName(), U.str(args));
		}
	}

	@SuppressWarnings("unchecked")
	public static  T invoke(Constructor constructor, Object... args) {
		try {
			constructor.setAccessible(true);
			return (T) constructor.newInstance(args);
		} catch (Exception e) {
			throw U.rte("Cannot invoke constructor '%s' with args: %s", e, constructor.getName(), U.str(args));
		}
	}

	@SuppressWarnings("unchecked")
	public static  T invokeRethrowing(Method method, Object target, Object... args) throws Throwable {
		try {
			return (T) method.invoke(target, args);

		} catch (InvocationTargetException e) {
			Throwable cause = e.getCause();
			throw cause != null ? cause : e;
		}
	}

	public static Class[] getImplementedInterfaces(Class clazz) {
		try {
			List> interfaces = new LinkedList>();

			for (Class c = clazz; c.getSuperclass() != null; c = c.getSuperclass()) {
				for (Class interf : c.getInterfaces()) {
					interfaces.add(interf);
				}
			}

			return interfaces.toArray(new Class[interfaces.size()]);
		} catch (Exception e) {
			throw U.rte("Cannot retrieve implemented interfaces!", e);
		}
	}

	public static boolean annotatedMethod(Object instance, String methodName, Class annotation) {
		try {
			Method method = instance.getClass().getMethod(methodName);
			return method.getAnnotation(annotation) != null;
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

	public static  Constructor getConstructor(Class clazz, Class... paramTypes) {
		try {
			return (Constructor) clazz.getConstructor(paramTypes);
		} catch (Exception e) {
			throw U.rte("Cannot find the constructor for %s with param types: %s", e, clazz,
				U.str(paramTypes));
		}
	}

	@SuppressWarnings("unchecked")
	public static  T newInstance(Class clazz, Map properties) {
		if (U.isEmpty(properties)) {
			return newInstance(clazz);
		}

		Collection