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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
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/**
* Copyright (c) 2008, SnakeYAML
*
* 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.yaml.snakeyaml.introspector;
import java.beans.FeatureDescriptor;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.Type;
import java.util.List;
import java.util.Map;
import org.yaml.snakeyaml.error.YAMLException;
import org.yaml.snakeyaml.util.ArrayUtils;
/**
*
* A MethodProperty
is a Property
which is accessed through accessor
* methods (setX, getX). It is possible to have a MethodProperty
which has only setter,
* only getter, or both. It is not possible to have a MethodProperty
which has neither
* setter nor getter.
*
*/
public class MethodProperty extends GenericProperty {
private final PropertyDescriptor property;
private final boolean readable;
private final boolean writable;
private static Type discoverGenericType(PropertyDescriptor property) {
Method readMethod = property.getReadMethod();
if (readMethod != null) {
return readMethod.getGenericReturnType();
}
Method writeMethod = property.getWriteMethod();
if (writeMethod != null) {
Type[] paramTypes = writeMethod.getGenericParameterTypes();
if (paramTypes.length > 0) {
return paramTypes[0];
}
}
/*
* This actually may happen if PropertyDescriptor is of type IndexedPropertyDescriptor and it
* has only IndexedGetter/Setter. ATM we simply skip type discovery.
*/
return null;
}
public MethodProperty(PropertyDescriptor property) {
super(property.getName(), property.getPropertyType(),
MethodProperty.discoverGenericType(property));
this.property = property;
this.readable = property.getReadMethod() != null;
this.writable = property.getWriteMethod() != null;
}
@Override
public void set(Object object, Object value) throws Exception {
if (!writable) {
throw new YAMLException(
"No writable property '" + getName() + "' on class: " + object.getClass().getName());
}
property.getWriteMethod().invoke(object, value);
}
@Override
public Object get(Object object) {
try {
property.getReadMethod().setAccessible(true);// issue 50
return property.getReadMethod().invoke(object);
} catch (Exception e) {
throw new YAMLException("Unable to find getter for property '" + property.getName()
+ "' on object " + object + ":" + e);
}
}
/**
* Returns the annotations that are present on read and write methods of this property or empty
* {@code List} if there're no annotations.
*
* @return the annotations that are present on this property or empty {@code List} if there're no
* annotations
*/
@Override
public List getAnnotations() {
List annotations;
if (isReadable() && isWritable()) {
annotations = ArrayUtils.toUnmodifiableCompositeList(
property.getReadMethod().getAnnotations(), property.getWriteMethod().getAnnotations());
} else if (isReadable()) {
annotations = ArrayUtils.toUnmodifiableList(property.getReadMethod().getAnnotations());
} else {
annotations = ArrayUtils.toUnmodifiableList(property.getWriteMethod().getAnnotations());
}
return annotations;
}
/**
* Returns property's annotation for the given type or {@code null} if it's not present. If the
* annotation is present on both read and write methods, the annotation on read method takes
* precedence.
*
* @param annotationType the type of the annotation to be returned
* @return property's annotation for the given type or {@code null} if it's not present
*/
@Override
public A getAnnotation(Class annotationType) {
A annotation = null;
if (isReadable()) {
annotation = property.getReadMethod().getAnnotation(annotationType);
}
if (annotation == null && isWritable()) {
annotation = property.getWriteMethod().getAnnotation(annotationType);
}
return annotation;
}
@Override
public boolean isWritable() {
return writable;
}
@Override
public boolean isReadable() {
return readable;
}
private static final String TRANSIENT = "transient";
private static boolean isTransient(FeatureDescriptor fd) {
return Boolean.TRUE.equals(fd.getValue(TRANSIENT));
}
/**
* Introspects given {@code type} and adds found properties to {@code properties} map.
*
* @param type the type to introspect
* @param properties map to add found properties to
* @return {@code true} if an inaccessible field was found
*/
static boolean addPublicFields(Class> type, Map properties) {
boolean inaccessableFieldsExist = false;
try {
for (PropertyDescriptor property : Introspector.getBeanInfo(type).getPropertyDescriptors()) {
Method readMethod = property.getReadMethod();
if ((readMethod == null || !readMethod.getName().equals("getClass"))
&& !isTransient(property)) {
properties.put(property.getName(), new MethodProperty(property));
}
}
} catch (IntrospectionException e) {
throw new YAMLException(e);
}
// add public fields
for (Class> c = type; c != null; c = c.getSuperclass()) {
for (Field field : c.getDeclaredFields()) {
int modifiers = field.getModifiers();
if (!Modifier.isStatic(modifiers) && !Modifier.isTransient(modifiers)) {
if (Modifier.isPublic(modifiers)) {
properties.put(field.getName(), new FieldProperty(field));
} else {
inaccessableFieldsExist = true;
}
}
}
}
return inaccessableFieldsExist;
}
}
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