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authorTeemu Suo-Anttila <teemusa@vaadin.com>2016-03-10 22:40:51 +0200
committerTeemu Suo-Anttila <teemusa@vaadin.com>2016-03-14 07:59:12 +0200
commita6653d3fe49e6a97468ac09f7f2f4d621bea1078 (patch)
tree96c82e20ca6551ee4c14c8877f0258b25c63cddf /server/src/com/vaadin/util/ReflectTools.java
parentf7e57d77ce621ee39167369c31d989edc5633266 (diff)
downloadvaadin-framework-a6653d3fe49e6a97468ac09f7f2f4d621bea1078.tar.gz
vaadin-framework-a6653d3fe49e6a97468ac09f7f2f4d621bea1078.zip
Migrate vaadin-server build to maven
Change-Id: I5c740f4e9cb28103bab199f9a552153d82277e7e
Diffstat (limited to 'server/src/com/vaadin/util/ReflectTools.java')
-rw-r--r--server/src/com/vaadin/util/ReflectTools.java216
1 files changed, 0 insertions, 216 deletions
diff --git a/server/src/com/vaadin/util/ReflectTools.java b/server/src/com/vaadin/util/ReflectTools.java
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--- a/server/src/com/vaadin/util/ReflectTools.java
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-/*
- * Copyright 2000-2014 Vaadin Ltd.
- *
- * 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 com.vaadin.util;
-
-import java.beans.IntrospectionException;
-import java.beans.PropertyDescriptor;
-import java.io.Serializable;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-
-/**
- * An util class with helpers for reflection operations. Used internally by
- * Vaadin and should not be used by application developers. Subject to change at
- * any time.
- *
- * @since 6.2
- */
-public class ReflectTools implements Serializable {
- /**
- * Locates the method in the given class. Returns null if the method is not
- * found. Throws an ExceptionInInitializerError if there is a problem
- * locating the method as this is mainly called from static blocks.
- *
- * @param cls
- * Class that contains the method
- * @param methodName
- * The name of the method
- * @param parameterTypes
- * The parameter types for the method.
- * @return A reference to the method
- * @throws ExceptionInInitializerError
- * Wraps any exception in an {@link ExceptionInInitializerError}
- * so this method can be called from a static initializer.
- */
- public static Method findMethod(Class<?> cls, String methodName,
- Class<?>... parameterTypes) throws ExceptionInInitializerError {
- try {
- return cls.getDeclaredMethod(methodName, parameterTypes);
- } catch (Exception e) {
- throw new ExceptionInInitializerError(e);
- }
- }
-
- /**
- * Returns the value of the java field.
- * <p>
- * Uses getter if present, otherwise tries to access even private fields
- * directly.
- *
- * @param object
- * The object containing the field
- * @param field
- * The field we want to get the value for
- * @return The value of the field in the object
- * @throws InvocationTargetException
- * If the value could not be retrieved
- * @throws IllegalAccessException
- * If the value could not be retrieved
- * @throws IllegalArgumentException
- * If the value could not be retrieved
- */
- public static Object getJavaFieldValue(Object object,
- java.lang.reflect.Field field) throws IllegalArgumentException,
- IllegalAccessException, InvocationTargetException {
- PropertyDescriptor pd;
- try {
- pd = new PropertyDescriptor(field.getName(), object.getClass());
- Method getter = pd.getReadMethod();
- if (getter != null) {
- return getter.invoke(object, (Object[]) null);
- }
- } catch (IntrospectionException e1) {
- // Ignore this and try to get directly using the field
- }
-
- // Try to get the value or throw an exception
- if (!field.isAccessible()) {
- // Try to gain access even if field is private
- field.setAccessible(true);
- }
- return field.get(object);
- }
-
- /**
- * Returns the value of the java field that is assignable to the property
- * type.
- * <p>
- * Uses getter if a getter for the correct return type is present, otherwise
- * tries to access even private fields directly. If the java field is not
- * assignable to the property type throws an IllegalArgumentException.
- *
- * @param object
- * The object containing the field
- * @param field
- * The field we want to get the value for
- * @param propertyType
- * The type the field must be assignable to
- * @return The value of the field in the object
- * @throws InvocationTargetException
- * If the value could not be retrieved
- * @throws IllegalAccessException
- * If the value could not be retrieved
- * @throws IllegalArgumentException
- * If the value could not be retrieved
- */
- public static Object getJavaFieldValue(Object object,
- java.lang.reflect.Field field, Class<?> propertyType)
- throws IllegalArgumentException, IllegalAccessException,
- InvocationTargetException {
- PropertyDescriptor pd;
- try {
- pd = new PropertyDescriptor(field.getName(), object.getClass());
- if (propertyType.isAssignableFrom(pd.getPropertyType())) {
- Method getter = pd.getReadMethod();
- if (getter != null) {
- return getter.invoke(object, (Object[]) null);
- }
- }
- } catch (IntrospectionException e1) {
- // Ignore this and try to get directly using the field
- }
- // If the field's type cannot be casted in to the requested type
- if (!propertyType.isAssignableFrom(field.getType())) {
- throw new IllegalArgumentException();
- }
- // Try to get the value or throw an exception
- if (!field.isAccessible()) {
- // Try to gain access even if field is private
- field.setAccessible(true);
- }
- return field.get(object);
- }
-
- /**
- * Sets the value of a java field.
- * <p>
- * Uses setter if present, otherwise tries to access even private fields
- * directly.
- *
- * @param object
- * The object containing the field
- * @param field
- * The field we want to set the value for
- * @param value
- * The value to set
- * @throws IllegalAccessException
- * If the value could not be assigned to the field
- * @throws IllegalArgumentException
- * If the value could not be assigned to the field
- * @throws InvocationTargetException
- * If the value could not be assigned to the field
- */
- public static void setJavaFieldValue(Object object,
- java.lang.reflect.Field field, Object value)
- throws IllegalAccessException, IllegalArgumentException,
- InvocationTargetException {
- PropertyDescriptor pd;
- try {
- pd = new PropertyDescriptor(field.getName(), object.getClass());
- Method setter = pd.getWriteMethod();
- if (setter != null) {
- // Exceptions are thrown forward if this fails
- setter.invoke(object, value);
- }
- } catch (IntrospectionException e1) {
- // Ignore this and try to set directly using the field
- }
-
- // Try to set the value directly to the field or throw an exception
- if (!field.isAccessible()) {
- // Try to gain access even if field is private
- field.setAccessible(true);
- }
- field.set(object, value);
- }
-
- /**
- * @since 7.4
- */
- public static Class<?> convertPrimitiveType(Class<?> type) {
- // Gets the return type from get method
- if (type.isPrimitive()) {
- if (type.equals(Boolean.TYPE)) {
- type = Boolean.class;
- } else if (type.equals(Integer.TYPE)) {
- type = Integer.class;
- } else if (type.equals(Float.TYPE)) {
- type = Float.class;
- } else if (type.equals(Double.TYPE)) {
- type = Double.class;
- } else if (type.equals(Byte.TYPE)) {
- type = Byte.class;
- } else if (type.equals(Character.TYPE)) {
- type = Character.class;
- } else if (type.equals(Short.TYPE)) {
- type = Short.class;
- } else if (type.equals(Long.TYPE)) {
- type = Long.class;
- }
- }
- return type;
- }
-}