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// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.introspector;
/**
* Property descriptor. It consist of read, write and field descriptor.
* Only one of those three descriptors may exist.
*/
public class PropertyDescriptor extends Descriptor {
protected final String name;
protected final MethodDescriptor readMethodDescriptor;
protected final MethodDescriptor writeMethodDescriptor;
protected final FieldDescriptor fieldDescriptor;
/**
* Creates field-only property descriptor.
*/
public PropertyDescriptor(final ClassDescriptor classDescriptor, final String propertyName, final FieldDescriptor fieldDescriptor) {
super(classDescriptor, false);
this.name = propertyName;
this.readMethodDescriptor = null;
this.writeMethodDescriptor = null;
this.fieldDescriptor = fieldDescriptor;
}
/**
* Creates property descriptor.
*/
public PropertyDescriptor(final ClassDescriptor classDescriptor, final String propertyName, final MethodDescriptor readMethod, final MethodDescriptor writeMethod) {
super(classDescriptor,
((readMethod == null) || readMethod.isPublic()) & (writeMethod == null || writeMethod.isPublic())
);
this.name = propertyName;
this.readMethodDescriptor = readMethod;
this.writeMethodDescriptor = writeMethod;
if (classDescriptor.isExtendedProperties()) {
String[] prefix = classDescriptor.getPropertyFieldPrefix();
FieldDescriptor fd = null;
if (prefix != null) {
for (String p : prefix) {
fd = findField(p + propertyName);
if (fd != null) {
break;
}
}
}
else {
fd = findField(propertyName);
}
this.fieldDescriptor = fd;
} else {
this.fieldDescriptor = null;
}
}
/**
* Locates property field. Field is being searched also in all
* superclasses of current class.
*/
protected FieldDescriptor findField(final String fieldName) {
FieldDescriptor fieldDescriptor = classDescriptor.getFieldDescriptor(fieldName, true);
if (fieldDescriptor != null) {
return fieldDescriptor;
}
// field descriptor not found in this class
// try to locate it in the superclasses
Class[] superclasses = classDescriptor.getAllSuperclasses();
for (Class superclass : superclasses) {
ClassDescriptor classDescriptor = ClassIntrospector.get().lookup(superclass);
fieldDescriptor = classDescriptor.getFieldDescriptor(fieldName, true);
if (fieldDescriptor != null) {
return fieldDescriptor;
}
}
// nothing found
return null;
}
/**
* Returns property name.
*/
@Override
public String getName() {
return name;
}
/**
* Returns read method of this property.
* May be null if read method is not defined.
*/
public MethodDescriptor getReadMethodDescriptor() {
return readMethodDescriptor;
}
/**
* Returns write method of this property.
* May be null for read-only properties.
*/
public MethodDescriptor getWriteMethodDescriptor() {
return writeMethodDescriptor;
}
/**
* Returns the associated field of this property.
* May be null if properties are not enhanced by field description.
*/
public FieldDescriptor getFieldDescriptor() {
return fieldDescriptor;
}
/**
* Returns true if this is an extended property with
* only field definition and without getter and setter.
*/
public boolean isFieldOnly() {
return (readMethodDescriptor == null) && (writeMethodDescriptor == null);
}
/**
* Returns true if this property has only a getter method.
*/
public boolean isGetterOnly() {
return (fieldDescriptor == null) && (writeMethodDescriptor == null);
}
/**
* Returns true if this property has only a setter method.
*/
public boolean isSetterOnly() {
return (fieldDescriptor == null) && (readMethodDescriptor == null);
}
// ---------------------------------------------------------------- type
protected Class type;
/**
* Returns property type. Raw types are detected.
*/
public Class getType() {
if (type == null) {
if (fieldDescriptor != null) {
type = fieldDescriptor.getRawType();
}
else if (readMethodDescriptor != null) {
type = readMethodDescriptor.getGetterRawType();
}
else if (writeMethodDescriptor != null) {
type = writeMethodDescriptor.getSetterRawType();
}
}
return type;
}
// ---------------------------------------------------------------- getters & setters
protected Getter[] getters;
protected Setter[] setters;
/**
* Returns {@link Getter}. May return null
* if no matched getter is found.
*/
public Getter getGetter(final boolean declared) {
if (getters == null) {
getters = new Getter[] {
createGetter(false),
createGetter(true),
};
}
return getters[declared ? 1 : 0];
}
/**
* Creates a {@link Getter}.
*/
protected Getter createGetter(final boolean declared) {
if (readMethodDescriptor != null) {
if (readMethodDescriptor.matchDeclared(declared)) {
return readMethodDescriptor;
}
}
if (fieldDescriptor != null) {
if (fieldDescriptor.matchDeclared(declared)) {
return fieldDescriptor;
}
}
return null;
}
/**
* Returns {@link Setter}. May return null
* if no matched setter is found.
*/
public Setter getSetter(final boolean declared) {
if (setters == null) {
setters = new Setter[] {
createSetter(false),
createSetter(true),
};
}
return setters[declared ? 1 : 0];
}
/**
* Creates a {@link Setter}.
*/
protected Setter createSetter(final boolean declared) {
if (writeMethodDescriptor != null) {
if (writeMethodDescriptor.matchDeclared(declared)) {
return writeMethodDescriptor;
}
}
if (fieldDescriptor != null) {
if (fieldDescriptor.matchDeclared(declared)) {
return fieldDescriptor;
}
}
return null;
}
// ---------------------------------------------------------------- resolvers
/**
* Resolves key type for given property descriptor.
*/
public Class resolveKeyType(final boolean declared) {
Class keyType = null;
Getter getter = getGetter(declared);
if (getter != null) {
keyType = getter.getGetterRawKeyComponentType();
}
if (keyType == null) {
FieldDescriptor fieldDescriptor = getFieldDescriptor();
if (fieldDescriptor != null) {
keyType = fieldDescriptor.getRawKeyComponentType();
}
}
return keyType;
}
/**
* Resolves component type for given property descriptor.
*/
public Class resolveComponentType(final boolean declared) {
Class componentType = null;
Getter getter = getGetter(declared);
if (getter != null) {
componentType = getter.getGetterRawComponentType();
}
if (componentType == null) {
FieldDescriptor fieldDescriptor = getFieldDescriptor();
if (fieldDescriptor != null) {
componentType = fieldDescriptor.getRawComponentType();
}
}
return componentType;
}
}