jodd.introspector.ClassDescriptor Maven / Gradle / Ivy
// Copyright (c) 2003-2010, Jodd Team (jodd.org). All Rights Reserved.
package jodd.introspector;
import jodd.util.ReflectUtil;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.Constructor;
import java.util.Map;
import java.util.List;
import java.util.Set;
import java.util.Collection;
/**
* A descriptor class for all methods/fields/constructors of a class.
* Static methods/fields are ignored.
* Hash table is pre-built to speed up query.
*
* Descriptors are 'lazy': various internal caches are created only on request.
*
* Throughout this class, public members are defined as members
* defined with "public" keyword and declared in a public type.
* Public members declared by a non-public class is considered non-public
* because access to it from outside is prohibited by the java access control
* anyway.
*
* Public members defined in public classes are always preferred even
* when we allow private/protected members and types to be visible.
* So if a non-public subtype and a public super type both have a field
* with the same name, the field in the public super type is always used.
*/
public class ClassDescriptor {
protected final Class type;
protected final boolean accessibleOnly;
protected int usageCount;
public ClassDescriptor(Class type, boolean accessibleOnly) {
this.type = type;
isArray = type.isArray();
isMap = ReflectUtil.isSubclass(type, Map.class);
isList = ReflectUtil.isSubclass(type, List.class);
isSet = ReflectUtil.isSubclass(type, Set.class);
isCollection = ReflectUtil.isSubclass(type, Collection.class);
this.accessibleOnly = accessibleOnly;
}
/**
* Get the class object that this descriptor describes.
*/
public Class getType() {
return type;
}
/**
* Increases descriptor usage.
*/
protected void increaseUsageCount() {
usageCount++;
}
/**
* Returns number of class description usages.
*/
public int getUsageCount() {
return usageCount;
}
// ---------------------------------------------------------------- special
private boolean isArray;
/**
* Returns true if class is an array.
*/
public boolean isArray() {
return isArray;
}
private boolean isMap;
/**
* Returns true if class is a Map.
*/
public boolean isMap() {
return isMap;
}
private boolean isList;
/**
* Returns true if class is a List.
*/
public boolean isList() {
return isList;
}
private boolean isSet;
public boolean isSet() {
return isSet;
}
private boolean isCollection;
public boolean isCollection() {
return isCollection;
}
// ---------------------------------------------------------------- fields
protected Fields publicFields;
protected Fields allFields;
/**
* Inspect class fields and create fields cache.
*/
protected void inspectFields() {
if (allFields != null) {
return;
}
Fields publicFields = new Fields();
Fields allFields = new Fields();
Field[] fields = accessibleOnly ? ReflectUtil.getAccessibleFields(type) : ReflectUtil.getSupportedFields(type);
for (Field field : fields) {
String fName = field.getName();
if (ReflectUtil.isPublic(field)) {
publicFields.addField(fName, field);
}
ReflectUtil.forceAccess(field);
allFields.addField(fName, field);
}
publicFields.lock();
allFields.lock();
this.publicFields = publicFields;
this.allFields = allFields;
}
/**
* Returns the field identified by name or null if not found.
*
* @param name field name
* @param suppressSecurity whether to look at non-public ones.
*/
public Field getField(String name, boolean suppressSecurity) {
inspectFields();
if (suppressSecurity == true) {
return allFields.getField(name);
} else {
return publicFields.getField(name);
}
}
/**
* Returns the public field identified by name or null if not found.
*/
public Field getField(String name) {
inspectFields();
return publicFields.getField(name);
}
/**
* Returns the total number of fields.
*/
public int getFieldCount(boolean suppressSecurity) {
inspectFields();
if (suppressSecurity == true) {
return allFields.getCount();
} else {
return publicFields.getCount();
}
}
/**
* Returns the total number of public fields.
*/
public int getFieldCount() {
inspectFields();
return publicFields.getCount();
}
/**
* Returns an array of all fields.
*/
public Field[] getAllFields(boolean suppressSecurity) {
inspectFields();
if (suppressSecurity == true) {
return allFields.getAllFields();
} else {
return publicFields.getAllFields();
}
}
/**
* Returns an array of all public fields.
*/
public Field[] getAllFields() {
inspectFields();
return publicFields.getAllFields();
}
// ---------------------------------------------------------------- methods
protected Methods publicMethods;
protected Methods allMethods;
/**
* Inspect methods and create methods cache.
*/
protected void inspectMethods() {
if (allMethods != null) {
return;
}
Methods publicMethods = new Methods();
Methods allMethods = new Methods();
Method[] methods = accessibleOnly ? ReflectUtil.getAccessibleMethods(type) : ReflectUtil.getSupportedMethods(type);
for (Method method : methods) {
String methodName = method.getName();
if (ReflectUtil.isPublic(method)) {
publicMethods.addMethod(methodName, method);
}
ReflectUtil.forceAccess(method);
allMethods.addMethod(methodName, method);
}
allMethods.lock();
publicMethods.lock();
this.allMethods = allMethods;
this.publicMethods = publicMethods;
}
/**
* Returns the method identified by name or null if not found.
*
* @param name method name
* @param suppressSecurity whether to look at non-public ones.
*/
public Method getMethod(String name, boolean suppressSecurity) {
inspectMethods();
if (suppressSecurity == true) {
return allMethods.getMethod(name);
} else {
return publicMethods.getMethod(name);
}
}
/**
* Returns the public method identified by name or null if not found.
*/
public Method getMethod(String name) {
inspectMethods();
return publicMethods.getMethod(name);
}
/**
* Returns the method identified by name and parameters.
*/
public Method getMethod(String name, Class[] params, boolean suppressSecurity) {
inspectMethods();
if (suppressSecurity == true) {
return allMethods.getMethod(name, params);
} else {
return publicMethods.getMethod(name, params);
}
}
/**
* Returns the public method identified by name and parameters.
*/
public Method getMethod(String name, Class[] params) {
inspectMethods();
return publicMethods.getMethod(name, params);
}
/**
* Returns an array of all methods with the same name.
*/
public Method[] getAllMethods(String name, boolean supressSecurity) {
inspectMethods();
if (supressSecurity == true) {
return allMethods.getAllMethods(name);
} else {
return publicMethods.getAllMethods(name);
}
}
/**
* Returns an array of all public methods with the same name.
*/
public Method[] getAllMethods(String name) {
inspectMethods();
return publicMethods.getAllMethods(name);
}
/**
* Returns an array of all methods.
*/
public Method[] getAllMethods(boolean supressSecurity) {
inspectMethods();
if (supressSecurity == true) {
return allMethods.getAllMethods();
} else {
return publicMethods.getAllMethods();
}
}
/**
* Returns an array of all public methods.
*/
public Method[] getAllMethods() {
inspectMethods();
return publicMethods.getAllMethods();
}
// ---------------------------------------------------------------- beans
protected Properties publicProperties;
protected Properties allProperties;
/**
* Inspect methods and create properties cache.
*/
protected void inspectProperties() {
if (publicProperties != null) {
return;
}
Properties publicProperties = new Properties();
Properties allProperties = new Properties();
Method[] methods = accessibleOnly ? ReflectUtil.getAccessibleMethods(type) : ReflectUtil.getSupportedMethods(type);
for (Method method : methods) {
if (Modifier.isStatic(method.getModifiers())) {
continue; // ignore static
}
boolean add = false;
String methodName = ReflectUtil.getBeanPropertyGetterName(method);
if (methodName != null) {
methodName = '-' + methodName;
add = true;
} else {
methodName = ReflectUtil.getBeanPropertySetterName(method);
if (methodName != null) {
methodName = '+' + methodName;
add = true;
}
}
if (add == true) {
if (ReflectUtil.isPublic(method)) {
publicProperties.addMethod(methodName, method);
}
ReflectUtil.forceAccess(method);
allProperties.addMethod(methodName, method);
}
}
allProperties.lock();
publicProperties.lock();
this.allProperties = allProperties;
this.publicProperties = publicProperties;
}
/**
* Returns bean setter identified by name.
*/
public Method getBeanSetter(String name, boolean suppressSecurity) {
inspectProperties();
if (suppressSecurity == true) {
return allProperties.setters.getMethod(name);
} else {
return publicProperties.setters.getMethod(name);
}
}
/**
* Returns public bean setter identified by name.
*/
public Method getBeanSetter(String name) {
inspectProperties();
return publicProperties.setters.getMethod(name);
}
/**
* Returns an array of all bean setters.
*/
public Method[] getAllBeanSetters(boolean suppressSecurity) {
inspectProperties();
if (suppressSecurity == true) {
return allProperties.setters.getAllMethods();
} else {
return publicProperties.setters.getAllMethods();
}
}
/**
* Returns an array of all public bean setters.
*/
public Method[] getAllBeanSetters() {
inspectProperties();
return publicProperties.setters.getAllMethods();
}
/**
* Returns an array of all bean setters names.
*/
public String[] getAllBeanSetterNames(boolean suppressSecurity) {
inspectProperties();
if (suppressSecurity == true) {
return allProperties.setterNames;
} else {
return publicProperties.setterNames;
}
}
/**
* Returns an array of all public bean setters names.
*/
public String[] getAllBeanSetterNames() {
inspectProperties();
return publicProperties.setterNames;
}
/**
* Returns bean getter identified by name.
*/
public Method getBeanGetter(String name, boolean suppressSecurity) {
inspectProperties();
if (suppressSecurity == true) {
return allProperties.getters.getMethod(name);
} else {
return publicProperties.getters.getMethod(name);
}
}
/**
* Returns public bean getter identified by name.
*/
public Method getBeanGetter(String name) {
inspectProperties();
return publicProperties.getters.getMethod(name);
}
/**
* Returns all bean getters.
*/
public Method[] getAllBeanGetters(boolean suppressSecurity) {
inspectProperties();
if (suppressSecurity == true) {
return allProperties.getters.getAllMethods();
} else {
return publicProperties.getters.getAllMethods();
}
}
/**
* Returns all public bean getters.
*/
public Method[] getAllBeanGetters() {
inspectProperties();
return publicProperties.getters.getAllMethods();
}
/**
* Returns all bean getters names.
*/
public String[] getAllBeanGetterNames(boolean suppressSecurity) {
inspectProperties();
if (suppressSecurity == true) {
return allProperties.getterNames;
} else {
return publicProperties.getterNames;
}
}
/**
* Returns all public bean getters names.
*/
public String[] getAllBeanGetterNames() {
inspectProperties();
return publicProperties.getterNames;
}
// ---------------------------------------------------------------- ctors
protected Ctors publicCtors;
protected Ctors allCtors;
/**
* Inspect class ctors and create ctors cache.
*/
protected void inspectCtors() {
if (allCtors != null) {
return;
}
Ctors publicCtors = new Ctors();
Ctors allCtors = new Ctors();
publicCtors.addCtors(type.getConstructors());
allCtors.addCtors(type.getDeclaredConstructors());
Constructor[] ctors = allCtors.getAllCtors();
for (Constructor ctor : ctors) {
if (ReflectUtil.isPublic(ctor) == false) {
ReflectUtil.forceAccess(ctor);
}
}
publicCtors.lock();
allCtors.lock();
this.publicCtors = publicCtors;
this.allCtors = allCtors;
}
/**
* Returns the default ctor or null if not found.
*/
public Constructor getDefaultCtor(boolean suppressSecurity) {
inspectCtors();
if (suppressSecurity == true) {
return allCtors.getDefaultCtor();
} else {
return publicCtors.getDefaultCtor();
}
}
/**
* Returns the constructor identified by arguments or null if not found.
*
* @param args ctor arguments
* @param suppressSecurity whether to look at non-public ones.
*/
public Constructor getCtor(Class[] args, boolean suppressSecurity) {
inspectCtors();
if (suppressSecurity == true) {
return allCtors.getCtor(args);
} else {
return publicCtors.getCtor(args);
}
}
/**
* Returns the public ctor identified by arguments or null if not found.
*/
public Constructor getCtor(Class[] args) {
inspectCtors();
return publicCtors.getCtor(args);
}
/**
* Returns the public default ctor or null if not found.
*/
public Constructor getDefaultCtor() {
inspectCtors();
return publicCtors.getDefaultCtor();
}
/**
* Returns the total number of constructors.
*/
public int getCtorCount(boolean suppressSecurity) {
inspectCtors();
if (suppressSecurity == true) {
return allCtors.getCount();
} else {
return publicCtors.getCount();
}
}
/**
* Returns the total number of public constructors.
*/
public int getCtorCount() {
inspectCtors();
return publicCtors.getCount();
}
/**
* Returns an array of all ctors.
*/
public Constructor[] getAllCtors(boolean suppressSecurity) {
inspectCtors();
if (suppressSecurity == true) {
return allCtors.getAllCtors();
} else {
return publicCtors.getAllCtors();
}
}
/**
* Returns an array of all public ctors.
*/
public Constructor[] getAllCtors() {
inspectCtors();
return publicCtors.getAllCtors();
}
}