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Committed 12 Mar 2025 05:12AM UTC coverage: 87.256% (+0.02%) from 87.235%

Build # 2743

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Pull #3427

github

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web-flow

Commit Message

Merge e88ddb146 into 1a145cdff

Pull Request Pull Request #3427: Rollback transactions only when an error occurs.

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/src/main/java/org/apache/ibatis/reflection/Reflector.java

/*
 *    Copyright 2009-2025 the original author or authors.
 *
 *    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
 *
 *       https://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.apache.ibatis.reflection;

import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.ReflectPermission;
import java.lang.reflect.Type;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.ibatis.reflection.invoker.AmbiguousMethodInvoker;
import org.apache.ibatis.reflection.invoker.GetFieldInvoker;
import org.apache.ibatis.reflection.invoker.Invoker;
import org.apache.ibatis.reflection.invoker.MethodInvoker;
import org.apache.ibatis.reflection.invoker.SetFieldInvoker;
import org.apache.ibatis.reflection.property.PropertyNamer;

/**
 * This class represents a cached set of class definition information that allows for easy mapping between property
 * names and getter/setter methods.
 *
 * @author Clinton Begin
 */
public class Reflector {

  private static final MethodHandle isRecordMethodHandle = getIsRecordMethodHandle();
  private final Class<?> type;
  private final String[] readablePropertyNames;
  private final String[] writablePropertyNames;
  private final Map<String, Invoker> setMethods = new HashMap<>();
  private final Map<String, Invoker> getMethods = new HashMap<>();
  private final Map<String, Class<?>> setTypes = new HashMap<>();
  private final Map<String, Class<?>> getTypes = new HashMap<>();
  private Constructor<?> defaultConstructor;

  private final Map<String, String> caseInsensitivePropertyMap = new HashMap<>();

  public Reflector(Class<?> clazz) {
    type = clazz;
    addDefaultConstructor(clazz);
    Method[] classMethods = getClassMethods(clazz);
    if (isRecord(type)) {
      addRecordGetMethods(classMethods);
    } else {
      addGetMethods(classMethods);
      addSetMethods(classMethods);
      addFields(clazz);
    }
    readablePropertyNames = getMethods.keySet().toArray(new String[0]);
    writablePropertyNames = setMethods.keySet().toArray(new String[0]);
    for (String propName : readablePropertyNames) {
      caseInsensitivePropertyMap.put(propName.toUpperCase(Locale.ENGLISH), propName);
    }
    for (String propName : writablePropertyNames) {
      caseInsensitivePropertyMap.put(propName.toUpperCase(Locale.ENGLISH), propName);
    }
  }

  private void addRecordGetMethods(Method[] methods) {
    Arrays.stream(methods).filter(m -> m.getParameterTypes().length == 0)
        .forEach(m -> addGetMethod(m.getName(), m, false));
  }

  private void addDefaultConstructor(Class<?> clazz) {
    Constructor<?>[] constructors = clazz.getDeclaredConstructors();
    Arrays.stream(constructors).filter(constructor -> constructor.getParameterTypes().length == 0).findAny()
        .ifPresent(constructor -> this.defaultConstructor = constructor);
  }

  private void addGetMethods(Method[] methods) {
    Map<String, List<Method>> conflictingGetters = new HashMap<>();
    Arrays.stream(methods).filter(m -> m.getParameterTypes().length == 0 && PropertyNamer.isGetter(m.getName()))
        .forEach(m -> addMethodConflict(conflictingGetters, PropertyNamer.methodToProperty(m.getName()), m));
    resolveGetterConflicts(conflictingGetters);
  }

  private void resolveGetterConflicts(Map<String, List<Method>> conflictingGetters) {
    for (Entry<String, List<Method>> entry : conflictingGetters.entrySet()) {
      Method winner = null;
      String propName = entry.getKey();
      boolean isAmbiguous = false;
      for (Method candidate : entry.getValue()) {
        if (winner == null) {
          winner = candidate;
          continue;
        }
        Class<?> winnerType = winner.getReturnType();
        Class<?> candidateType = candidate.getReturnType();
        if (candidateType.equals(winnerType)) {
          if (!boolean.class.equals(candidateType)) {
            isAmbiguous = true;
            break;
          }
          if (candidate.getName().startsWith("is")) {
            winner = candidate;
          }
        } else if (candidateType.isAssignableFrom(winnerType)) {
          // OK getter type is descendant
        } else if (winnerType.isAssignableFrom(candidateType)) {
          winner = candidate;
        } else {
          isAmbiguous = true;
          break;
        }
      }
      addGetMethod(propName, winner, isAmbiguous);
    }
  }

  private void addGetMethod(String name, Method method, boolean isAmbiguous) {
    MethodInvoker invoker = isAmbiguous ? new AmbiguousMethodInvoker(method, MessageFormat.format(
        "Illegal overloaded getter method with ambiguous type for property ''{0}'' in class ''{1}''. This breaks the JavaBeans specification and can cause unpredictable results.",
        name, method.getDeclaringClass().getName())) : new MethodInvoker(method);
    getMethods.put(name, invoker);
    Type returnType = TypeParameterResolver.resolveReturnType(method, type);
    getTypes.put(name, typeToClass(returnType));
  }

  private void addSetMethods(Method[] methods) {
    Map<String, List<Method>> conflictingSetters = new HashMap<>();
    Arrays.stream(methods).filter(m -> m.getParameterTypes().length == 1 && PropertyNamer.isSetter(m.getName()))
        .forEach(m -> addMethodConflict(conflictingSetters, PropertyNamer.methodToProperty(m.getName()), m));
    resolveSetterConflicts(conflictingSetters);
  }

  private void addMethodConflict(Map<String, List<Method>> conflictingMethods, String name, Method method) {
    if (isValidPropertyName(name)) {
      List<Method> list = conflictingMethods.computeIfAbsent(name, k -> new ArrayList<>());
      list.add(method);
    }
  }

  private void resolveSetterConflicts(Map<String, List<Method>> conflictingSetters) {
    for (Entry<String, List<Method>> entry : conflictingSetters.entrySet()) {
      String propName = entry.getKey();
      List<Method> setters = entry.getValue();
      Class<?> getterType = getTypes.get(propName);
      boolean isGetterAmbiguous = getMethods.get(propName) instanceof AmbiguousMethodInvoker;
      boolean isSetterAmbiguous = false;
      Method match = null;
      for (Method setter : setters) {
        if (!isGetterAmbiguous && setter.getParameterTypes()[0].equals(getterType)) {
          // should be the best match
          match = setter;
          break;
        }
        if (!isSetterAmbiguous) {
          match = pickBetterSetter(match, setter, propName);
          isSetterAmbiguous = match == null;
        }
      }
      if (match != null) {
        addSetMethod(propName, match);
      }
    }
  }

  private Method pickBetterSetter(Method setter1, Method setter2, String property) {
    if (setter1 == null) {
      return setter2;
    }
    Class<?> paramType1 = setter1.getParameterTypes()[0];
    Class<?> paramType2 = setter2.getParameterTypes()[0];
    if (paramType1.isAssignableFrom(paramType2)) {
      return setter2;
    }
    if (paramType2.isAssignableFrom(paramType1)) {
      return setter1;
    }
    MethodInvoker invoker = new AmbiguousMethodInvoker(setter1,
        MessageFormat.format(
            "Ambiguous setters defined for property ''{0}'' in class ''{1}'' with types ''{2}'' and ''{3}''.", property,
            setter2.getDeclaringClass().getName(), paramType1.getName(), paramType2.getName()));
    setMethods.put(property, invoker);
    Type[] paramTypes = TypeParameterResolver.resolveParamTypes(setter1, type);
    setTypes.put(property, typeToClass(paramTypes[0]));
    return null;
  }

  private void addSetMethod(String name, Method method) {
    MethodInvoker invoker = new MethodInvoker(method);
    setMethods.put(name, invoker);
    Type[] paramTypes = TypeParameterResolver.resolveParamTypes(method, type);
    setTypes.put(name, typeToClass(paramTypes[0]));
  }

  private Class<?> typeToClass(Type src) {
    Class<?> result = null;
    if (src instanceof Class) {
      result = (Class<?>) src;
    } else if (src instanceof ParameterizedType) {
      result = (Class<?>) ((ParameterizedType) src).getRawType();
    } else if (src instanceof GenericArrayType) {
      Type componentType = ((GenericArrayType) src).getGenericComponentType();
      if (componentType instanceof Class) {
        result = Array.newInstance((Class<?>) componentType, 0).getClass();
      } else {
        Class<?> componentClass = typeToClass(componentType);
        result = Array.newInstance(componentClass, 0).getClass();
      }
    }
    if (result == null) {
      result = Object.class;
    }
    return result;
  }

  private void addFields(Class<?> clazz) {
    Field[] fields = clazz.getDeclaredFields();
    for (Field field : fields) {
      if (!setMethods.containsKey(field.getName())) {
        // issue #379 - removed the check for final because JDK 1.5 allows
        // modification of final fields through reflection (JSR-133). (JGB)
        // pr #16 - final static can only be set by the classloader
        int modifiers = field.getModifiers();
        if (!Modifier.isFinal(modifiers) || !Modifier.isStatic(modifiers)) {
          addSetField(field);
        }
      }
      if (!getMethods.containsKey(field.getName())) {
        addGetField(field);
      }
    }
    if (clazz.getSuperclass() != null) {
      addFields(clazz.getSuperclass());
    }
  }

  private void addSetField(Field field) {
    if (isValidPropertyName(field.getName())) {
      setMethods.put(field.getName(), new SetFieldInvoker(field));
      Type fieldType = TypeParameterResolver.resolveFieldType(field, type);
      setTypes.put(field.getName(), typeToClass(fieldType));
    }
  }

  private void addGetField(Field field) {
    if (isValidPropertyName(field.getName())) {
      getMethods.put(field.getName(), new GetFieldInvoker(field));
      Type fieldType = TypeParameterResolver.resolveFieldType(field, type);
      getTypes.put(field.getName(), typeToClass(fieldType));
    }
  }

  private boolean isValidPropertyName(String name) {
    return !name.startsWith("$") && !"serialVersionUID".equals(name) && !"class".equals(name);
  }

  /**
   * This method returns an array containing all methods declared in this class and any superclass. We use this method,
   * instead of the simpler <code>Class.getMethods()</code>, because we want to look for private methods as well.
   *
   * @param clazz
   *          The class
   *
   * @return An array containing all methods in this class
   */
  private Method[] getClassMethods(Class<?> clazz) {
    Map<String, Method> uniqueMethods = new HashMap<>();
    Class<?> currentClass = clazz;
    while (currentClass != null && currentClass != Object.class) {
      addUniqueMethods(uniqueMethods, currentClass.getDeclaredMethods());

      // we also need to look for interface methods -
      // because the class may be abstract
      Class<?>[] interfaces = currentClass.getInterfaces();
      for (Class<?> anInterface : interfaces) {
        addUniqueMethods(uniqueMethods, anInterface.getMethods());
      }

      currentClass = currentClass.getSuperclass();
    }

    Collection<Method> methods = uniqueMethods.values();

    return methods.toArray(new Method[0]);
  }

  private void addUniqueMethods(Map<String, Method> uniqueMethods, Method[] methods) {
    for (Method currentMethod : methods) {
      if (!currentMethod.isBridge()) {
        String signature = getSignature(currentMethod);
        // check to see if the method is already known
        // if it is known, then an extended class must have
        // overridden a method
        if (!uniqueMethods.containsKey(signature)) {
          uniqueMethods.put(signature, currentMethod);
        }
      }
    }
  }

  private String getSignature(Method method) {
    StringBuilder sb = new StringBuilder();
    Class<?> returnType = method.getReturnType();
    sb.append(returnType.getName()).append('#');
    sb.append(method.getName());
    Class<?>[] parameters = method.getParameterTypes();
    for (int i = 0; i < parameters.length; i++) {
      sb.append(i == 0 ? ':' : ',').append(parameters[i].getName());
    }
    return sb.toString();
  }

  /**
   * Checks whether can control member accessible.
   *
   * @return If can control member accessible, it return {@literal true}
   *
   * @since 3.5.0
   */
  public static boolean canControlMemberAccessible() {
    try {
      SecurityManager securityManager = System.getSecurityManager();
      if (null != securityManager) {
        securityManager.checkPermission(new ReflectPermission("suppressAccessChecks"));
      }
    } catch (SecurityException e) {
      return false;
    }
    return true;
  }

  /**
   * Gets the name of the class the instance provides information for.
   *
   * @return The class name
   */
  public Class<?> getType() {
    return type;
  }

  public Constructor<?> getDefaultConstructor() {
    if (defaultConstructor != null) {
      return defaultConstructor;
    }
    throw new ReflectionException("There is no default constructor for " + type);
  }

  public boolean hasDefaultConstructor() {
    return defaultConstructor != null;
  }

  public Invoker getSetInvoker(String propertyName) {
    Invoker method = setMethods.get(propertyName);
    if (method == null) {
      throw new ReflectionException("There is no setter for property named '" + propertyName + "' in '" + type + "'");
    }
    return method;
  }

  public Invoker getGetInvoker(String propertyName) {
    Invoker method = getMethods.get(propertyName);
    if (method == null) {
      throw new ReflectionException("There is no getter for property named '" + propertyName + "' in '" + type + "'");
    }
    return method;
  }

  /**
   * Gets the type for a property setter.
   *
   * @param propertyName
   *          - the name of the property
   *
   * @return The Class of the property setter
   */
  public Class<?> getSetterType(String propertyName) {
    Class<?> clazz = setTypes.get(propertyName);
    if (clazz == null) {
      throw new ReflectionException("There is no setter for property named '" + propertyName + "' in '" + type + "'");
    }
    return clazz;
  }

  /**
   * Gets the type for a property getter.
   *
   * @param propertyName
   *          - the name of the property
   *
   * @return The Class of the property getter
   */
  public Class<?> getGetterType(String propertyName) {
    Class<?> clazz = getTypes.get(propertyName);
    if (clazz == null) {
      throw new ReflectionException("There is no getter for property named '" + propertyName + "' in '" + type + "'");
    }
    return clazz;
  }

  /**
   * Gets an array of the readable properties for an object.
   *
   * @return The array
   */
  public String[] getGetablePropertyNames() {
    return readablePropertyNames;
  }

  /**
   * Gets an array of the writable properties for an object.
   *
   * @return The array
   */
  public String[] getSetablePropertyNames() {
    return writablePropertyNames;
  }

  /**
   * Check to see if a class has a writable property by name.
   *
   * @param propertyName
   *          - the name of the property to check
   *
   * @return True if the object has a writable property by the name
   */
  public boolean hasSetter(String propertyName) {
    return setMethods.containsKey(propertyName);
  }

  /**
   * Check to see if a class has a readable property by name.
   *
   * @param propertyName
   *          - the name of the property to check
   *
   * @return True if the object has a readable property by the name
   */
  public boolean hasGetter(String propertyName) {
    return getMethods.containsKey(propertyName);
  }

  public String findPropertyName(String name) {
    return caseInsensitivePropertyMap.get(name.toUpperCase(Locale.ENGLISH));
  }

  /**
   * Class.isRecord() alternative for Java 15 and older.
   */
  private static boolean isRecord(Class<?> clazz) {
    try {
      return isRecordMethodHandle != null && (boolean) isRecordMethodHandle.invokeExact(clazz);
    } catch (Throwable e) {
      throw new ReflectionException("Failed to invoke 'Class.isRecord()'.", e);
    }
  }

  private static MethodHandle getIsRecordMethodHandle() {
    MethodHandles.Lookup lookup = MethodHandles.lookup();
    MethodType mt = MethodType.methodType(boolean.class);
    try {
      return lookup.findVirtual(Class.class, "isRecord", mt);
    } catch (NoSuchMethodException | IllegalAccessException e) {
      return null;
    }
  }
}

1	/*
2	* Copyright 2009-2025 the original author or authors.
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* https://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16	package org.apache.ibatis.reflection;
17
18	import java.lang.invoke.MethodHandle;
19	import java.lang.invoke.MethodHandles;
20	import java.lang.invoke.MethodType;
21	import java.lang.reflect.Array;
22	import java.lang.reflect.Constructor;
23	import java.lang.reflect.Field;
24	import java.lang.reflect.GenericArrayType;
25	import java.lang.reflect.Method;
26	import java.lang.reflect.Modifier;
27	import java.lang.reflect.ParameterizedType;
28	import java.lang.reflect.ReflectPermission;
29	import java.lang.reflect.Type;
30	import java.text.MessageFormat;
31	import java.util.ArrayList;
32	import java.util.Arrays;
33	import java.util.Collection;
34	import java.util.HashMap;
35	import java.util.List;
36	import java.util.Locale;
37	import java.util.Map;
38	import java.util.Map.Entry;
39
40	import org.apache.ibatis.reflection.invoker.AmbiguousMethodInvoker;
41	import org.apache.ibatis.reflection.invoker.GetFieldInvoker;
42	import org.apache.ibatis.reflection.invoker.Invoker;
43	import org.apache.ibatis.reflection.invoker.MethodInvoker;
44	import org.apache.ibatis.reflection.invoker.SetFieldInvoker;
45	import org.apache.ibatis.reflection.property.PropertyNamer;
46
47	/**
48	* This class represents a cached set of class definition information that allows for easy mapping between property
49	* names and getter/setter methods.
50	*
51	* @author Clinton Begin
52	*/
53	public class Reflector {
54
55	private static final MethodHandle isRecordMethodHandle = getIsRecordMethodHandle();	1✔
56	private final Class<?> type;
57	private final String[] readablePropertyNames;
58	private final String[] writablePropertyNames;
59	private final Map<String, Invoker> setMethods = new HashMap<>();	1✔
60	private final Map<String, Invoker> getMethods = new HashMap<>();	1✔
61	private final Map<String, Class<?>> setTypes = new HashMap<>();	1✔
62	private final Map<String, Class<?>> getTypes = new HashMap<>();	1✔
63	private Constructor<?> defaultConstructor;
64
65	private final Map<String, String> caseInsensitivePropertyMap = new HashMap<>();	1✔
66
67	public Reflector(Class<?> clazz) {	1✔
68	type = clazz;	1✔
69	addDefaultConstructor(clazz);	1✔
70	Method[] classMethods = getClassMethods(clazz);	1✔
71	if (isRecord(type)) {	1✔
72	addRecordGetMethods(classMethods);	1✔
73	} else {
74	addGetMethods(classMethods);	1✔
75	addSetMethods(classMethods);	1✔
76	addFields(clazz);	1✔
77	}
78	readablePropertyNames = getMethods.keySet().toArray(new String[0]);	1✔
79	writablePropertyNames = setMethods.keySet().toArray(new String[0]);	1✔
80	for (String propName : readablePropertyNames) {	1✔
81	caseInsensitivePropertyMap.put(propName.toUpperCase(Locale.ENGLISH), propName);	1✔
82	}
83	for (String propName : writablePropertyNames) {	1✔
84	caseInsensitivePropertyMap.put(propName.toUpperCase(Locale.ENGLISH), propName);	1✔
85	}
86	}	1✔
87
88	private void addRecordGetMethods(Method[] methods) {
89	Arrays.stream(methods).filter(m -> m.getParameterTypes().length == 0)	1✔
90	.forEach(m -> addGetMethod(m.getName(), m, false));	1✔
91	}	1✔
92
93	private void addDefaultConstructor(Class<?> clazz) {
94	Constructor<?>[] constructors = clazz.getDeclaredConstructors();	1✔
95	Arrays.stream(constructors).filter(constructor -> constructor.getParameterTypes().length == 0).findAny()	1✔
96	.ifPresent(constructor -> this.defaultConstructor = constructor);	1✔
97	}	1✔
98
99	private void addGetMethods(Method[] methods) {
100	Map<String, List<Method>> conflictingGetters = new HashMap<>();	1✔
101	Arrays.stream(methods).filter(m -> m.getParameterTypes().length == 0 && PropertyNamer.isGetter(m.getName()))	1✔
102	.forEach(m -> addMethodConflict(conflictingGetters, PropertyNamer.methodToProperty(m.getName()), m));	1✔
103	resolveGetterConflicts(conflictingGetters);	1✔
104	}	1✔
105
106	private void resolveGetterConflicts(Map<String, List<Method>> conflictingGetters) {
107	for (Entry<String, List<Method>> entry : conflictingGetters.entrySet()) {	1✔
108	Method winner = null;	1✔
109	String propName = entry.getKey();	1✔
110	boolean isAmbiguous = false;	1✔
111	for (Method candidate : entry.getValue()) {	1✔
112	if (winner == null) {	1✔
113	winner = candidate;	1✔
114	continue;	1✔
115	}
116	Class<?> winnerType = winner.getReturnType();	1✔
117	Class<?> candidateType = candidate.getReturnType();	1✔
118	if (candidateType.equals(winnerType)) {	1✔
119	if (!boolean.class.equals(candidateType)) {	1✔
120	isAmbiguous = true;	1✔
121	break;	1✔
122	}
123	if (candidate.getName().startsWith("is")) {	1!
UNCOV 124	winner = candidate;	×
125	}
126	} else if (candidateType.isAssignableFrom(winnerType)) {	1✔
127	// OK getter type is descendant
128	} else if (winnerType.isAssignableFrom(candidateType)) {	1✔
129	winner = candidate;	1✔
130	} else {
131	isAmbiguous = true;	1✔
132	break;	1✔
133	}
134	}	1✔
135	addGetMethod(propName, winner, isAmbiguous);	1✔
136	}	1✔
137	}	1✔
138
139	private void addGetMethod(String name, Method method, boolean isAmbiguous) {
140	MethodInvoker invoker = isAmbiguous ? new AmbiguousMethodInvoker(method, MessageFormat.format(	1✔
141	"Illegal overloaded getter method with ambiguous type for property ''{0}'' in class ''{1}''. This breaks the JavaBeans specification and can cause unpredictable results.",
142	name, method.getDeclaringClass().getName())) : new MethodInvoker(method);	1✔
143	getMethods.put(name, invoker);	1✔
144	Type returnType = TypeParameterResolver.resolveReturnType(method, type);	1✔
145	getTypes.put(name, typeToClass(returnType));	1✔
146	}	1✔
147
148	private void addSetMethods(Method[] methods) {
149	Map<String, List<Method>> conflictingSetters = new HashMap<>();	1✔
150	Arrays.stream(methods).filter(m -> m.getParameterTypes().length == 1 && PropertyNamer.isSetter(m.getName()))	1✔
151	.forEach(m -> addMethodConflict(conflictingSetters, PropertyNamer.methodToProperty(m.getName()), m));	1✔
152	resolveSetterConflicts(conflictingSetters);	1✔
153	}	1✔
154
155	private void addMethodConflict(Map<String, List<Method>> conflictingMethods, String name, Method method) {
156	if (isValidPropertyName(name)) {	1!
157	List<Method> list = conflictingMethods.computeIfAbsent(name, k -> new ArrayList<>());	1✔
158	list.add(method);	1✔
159	}
160	}	1✔
161
162	private void resolveSetterConflicts(Map<String, List<Method>> conflictingSetters) {
163	for (Entry<String, List<Method>> entry : conflictingSetters.entrySet()) {	1✔
164	String propName = entry.getKey();	1✔
165	List<Method> setters = entry.getValue();	1✔
166	Class<?> getterType = getTypes.get(propName);	1✔
167	boolean isGetterAmbiguous = getMethods.get(propName) instanceof AmbiguousMethodInvoker;	1✔
168	boolean isSetterAmbiguous = false;	1✔
169	Method match = null;	1✔
170	for (Method setter : setters) {	1✔
171	if (!isGetterAmbiguous && setter.getParameterTypes()[0].equals(getterType)) {	1✔
172	// should be the best match
173	match = setter;	1✔
174	break;	1✔
175	}
176	if (!isSetterAmbiguous) {	1✔
177	match = pickBetterSetter(match, setter, propName);	1✔
178	isSetterAmbiguous = match == null;	1✔
179	}
180	}	1✔
181	if (match != null) {	1✔
182	addSetMethod(propName, match);	1✔
183	}
184	}	1✔
185	}	1✔
186
187	private Method pickBetterSetter(Method setter1, Method setter2, String property) {
188	if (setter1 == null) {	1✔
189	return setter2;	1✔
190	}
191	Class<?> paramType1 = setter1.getParameterTypes()[0];	1✔
192	Class<?> paramType2 = setter2.getParameterTypes()[0];	1✔
193	if (paramType1.isAssignableFrom(paramType2)) {	1!
194	return setter2;	×
195	}
196	if (paramType2.isAssignableFrom(paramType1)) {	1✔
197	return setter1;	1✔
198	}
199	MethodInvoker invoker = new AmbiguousMethodInvoker(setter1,	1✔
200	MessageFormat.format(	1✔
201	"Ambiguous setters defined for property ''{0}'' in class ''{1}'' with types ''{2}'' and ''{3}''.", property,
202	setter2.getDeclaringClass().getName(), paramType1.getName(), paramType2.getName()));	1✔
203	setMethods.put(property, invoker);	1✔
204	Type[] paramTypes = TypeParameterResolver.resolveParamTypes(setter1, type);	1✔
205	setTypes.put(property, typeToClass(paramTypes[0]));	1✔
206	return null;	1✔
207	}
208
209	private void addSetMethod(String name, Method method) {
210	MethodInvoker invoker = new MethodInvoker(method);	1✔
211	setMethods.put(name, invoker);	1✔
212	Type[] paramTypes = TypeParameterResolver.resolveParamTypes(method, type);	1✔
213	setTypes.put(name, typeToClass(paramTypes[0]));	1✔
214	}	1✔
215
216	private Class<?> typeToClass(Type src) {
217	Class<?> result = null;	1✔
218	if (src instanceof Class) {	1✔
219	result = (Class<?>) src;	1✔
220	} else if (src instanceof ParameterizedType) {	1✔
221	result = (Class<?>) ((ParameterizedType) src).getRawType();	1✔
222	} else if (src instanceof GenericArrayType) {	1!
223	Type componentType = ((GenericArrayType) src).getGenericComponentType();	1✔
224	if (componentType instanceof Class) {	1!
225	result = Array.newInstance((Class<?>) componentType, 0).getClass();	×
226	} else {
227	Class<?> componentClass = typeToClass(componentType);	1✔
228	result = Array.newInstance(componentClass, 0).getClass();	1✔
229	}
230	}
231	if (result == null) {	1!
232	result = Object.class;	×
233	}
234	return result;	1✔
235	}
236
237	private void addFields(Class<?> clazz) {
238	Field[] fields = clazz.getDeclaredFields();	1✔
239	for (Field field : fields) {	1✔
240	if (!setMethods.containsKey(field.getName())) {	1✔
241	// issue #379 - removed the check for final because JDK 1.5 allows
242	// modification of final fields through reflection (JSR-133). (JGB)
243	// pr #16 - final static can only be set by the classloader
244	int modifiers = field.getModifiers();	1✔
245	if (!Modifier.isFinal(modifiers) \|\| !Modifier.isStatic(modifiers)) {	1✔
246	addSetField(field);	1✔
247	}
248	}
249	if (!getMethods.containsKey(field.getName())) {	1✔
250	addGetField(field);	1✔
251	}
252	}
253	if (clazz.getSuperclass() != null) {	1✔
254	addFields(clazz.getSuperclass());	1✔
255	}
256	}	1✔
257
258	private void addSetField(Field field) {
259	if (isValidPropertyName(field.getName())) {	1!
260	setMethods.put(field.getName(), new SetFieldInvoker(field));	1✔
261	Type fieldType = TypeParameterResolver.resolveFieldType(field, type);	1✔
262	setTypes.put(field.getName(), typeToClass(fieldType));	1✔
263	}
264	}	1✔
265
266	private void addGetField(Field field) {
267	if (isValidPropertyName(field.getName())) {	1✔
268	getMethods.put(field.getName(), new GetFieldInvoker(field));	1✔
269	Type fieldType = TypeParameterResolver.resolveFieldType(field, type);	1✔
270	getTypes.put(field.getName(), typeToClass(fieldType));	1✔
271	}
272	}	1✔
273
274	private boolean isValidPropertyName(String name) {
275	return !name.startsWith("$") && !"serialVersionUID".equals(name) && !"class".equals(name);	1!
276	}
277
278	/**
279	* This method returns an array containing all methods declared in this class and any superclass. We use this method,
280	* instead of the simpler <code>Class.getMethods()</code>, because we want to look for private methods as well.
281	*
282	* @param clazz
283	* The class
284	*
285	* @return An array containing all methods in this class
286	*/
287	private Method[] getClassMethods(Class<?> clazz) {
288	Map<String, Method> uniqueMethods = new HashMap<>();	1✔
289	Class<?> currentClass = clazz;	1✔
290	while (currentClass != null && currentClass != Object.class) {	1✔
291	addUniqueMethods(uniqueMethods, currentClass.getDeclaredMethods());	1✔
292
293	// we also need to look for interface methods -
294	// because the class may be abstract
295	Class<?>[] interfaces = currentClass.getInterfaces();	1✔
296	for (Class<?> anInterface : interfaces) {	1✔
297	addUniqueMethods(uniqueMethods, anInterface.getMethods());	1✔
298	}
299
300	currentClass = currentClass.getSuperclass();	1✔
301	}	1✔
302
303	Collection<Method> methods = uniqueMethods.values();	1✔
304
305	return methods.toArray(new Method[0]);	1✔
306	}
307
308	private void addUniqueMethods(Map<String, Method> uniqueMethods, Method[] methods) {
309	for (Method currentMethod : methods) {	1✔
310	if (!currentMethod.isBridge()) {	1✔
311	String signature = getSignature(currentMethod);	1✔
312	// check to see if the method is already known
313	// if it is known, then an extended class must have
314	// overridden a method
315	if (!uniqueMethods.containsKey(signature)) {	1✔
316	uniqueMethods.put(signature, currentMethod);	1✔
317	}
318	}
319	}
320	}	1✔
321
322	private String getSignature(Method method) {
323	StringBuilder sb = new StringBuilder();	1✔
324	Class<?> returnType = method.getReturnType();	1✔
325	sb.append(returnType.getName()).append('#');	1✔
326	sb.append(method.getName());	1✔
327	Class<?>[] parameters = method.getParameterTypes();	1✔
328	for (int i = 0; i < parameters.length; i++) {	1✔
329	sb.append(i == 0 ? ':' : ',').append(parameters[i].getName());	1✔
330	}
331	return sb.toString();	1✔
332	}
333
334	/**
335	* Checks whether can control member accessible.
336	*
337	* @return If can control member accessible, it return {@literal true}
338	*
339	* @since 3.5.0
340	*/
341	public static boolean canControlMemberAccessible() {
342	try {
343	SecurityManager securityManager = System.getSecurityManager();	1✔
344	if (null != securityManager) {	1!
345	securityManager.checkPermission(new ReflectPermission("suppressAccessChecks"));	×
346	}
347	} catch (SecurityException e) {	×
348	return false;	×
349	}	1✔
350	return true;	1✔
351	}
352
353	/**
354	* Gets the name of the class the instance provides information for.
355	*
356	* @return The class name
357	*/
358	public Class<?> getType() {
359	return type;	1✔
360	}
361
362	public Constructor<?> getDefaultConstructor() {
363	if (defaultConstructor != null) {	×
364	return defaultConstructor;	×
365	}
366	throw new ReflectionException("There is no default constructor for " + type);	×
367	}
368
369	public boolean hasDefaultConstructor() {
370	return defaultConstructor != null;	1✔
371	}
372
373	public Invoker getSetInvoker(String propertyName) {
374	Invoker method = setMethods.get(propertyName);	1✔
375	if (method == null) {	1!
376	throw new ReflectionException("There is no setter for property named '" + propertyName + "' in '" + type + "'");	×
377	}
378	return method;	1✔
379	}
380
381	public Invoker getGetInvoker(String propertyName) {
382	Invoker method = getMethods.get(propertyName);	1✔
383	if (method == null) {	1✔
384	throw new ReflectionException("There is no getter for property named '" + propertyName + "' in '" + type + "'");	1✔
385	}
386	return method;	1✔
387	}
388
389	/**
390	* Gets the type for a property setter.
391	*
392	* @param propertyName
393	* - the name of the property
394	*
395	* @return The Class of the property setter
396	*/
397	public Class<?> getSetterType(String propertyName) {
398	Class<?> clazz = setTypes.get(propertyName);	1✔
399	if (clazz == null) {	1✔
400	throw new ReflectionException("There is no setter for property named '" + propertyName + "' in '" + type + "'");	1✔
401	}
402	return clazz;	1✔
403	}
404
405	/**
406	* Gets the type for a property getter.
407	*
408	* @param propertyName
409	* - the name of the property
410	*
411	* @return The Class of the property getter
412	*/
413	public Class<?> getGetterType(String propertyName) {
414	Class<?> clazz = getTypes.get(propertyName);	1✔
415	if (clazz == null) {	1✔
416	throw new ReflectionException("There is no getter for property named '" + propertyName + "' in '" + type + "'");	1✔
417	}
418	return clazz;	1✔
419	}
420
421	/**
422	* Gets an array of the readable properties for an object.
423	*
424	* @return The array
425	*/
426	public String[] getGetablePropertyNames() {
427	return readablePropertyNames;	1✔
428	}
429
430	/**
431	* Gets an array of the writable properties for an object.
432	*
433	* @return The array
434	*/
435	public String[] getSetablePropertyNames() {
436	return writablePropertyNames;	1✔
437	}
438
439	/**
440	* Check to see if a class has a writable property by name.
441	*
442	* @param propertyName
443	* - the name of the property to check
444	*
445	* @return True if the object has a writable property by the name
446	*/
447	public boolean hasSetter(String propertyName) {
448	return setMethods.containsKey(propertyName);	1✔
449	}
450
451	/**
452	* Check to see if a class has a readable property by name.
453	*
454	* @param propertyName
455	* - the name of the property to check
456	*
457	* @return True if the object has a readable property by the name
458	*/
459	public boolean hasGetter(String propertyName) {
460	return getMethods.containsKey(propertyName);	1✔
461	}
462
463	public String findPropertyName(String name) {
464	return caseInsensitivePropertyMap.get(name.toUpperCase(Locale.ENGLISH));	1✔
465	}
466
467	/**
468	* Class.isRecord() alternative for Java 15 and older.
469	*/
470	private static boolean isRecord(Class<?> clazz) {
471	try {
472	return isRecordMethodHandle != null && (boolean) isRecordMethodHandle.invokeExact(clazz);	1!
473	} catch (Throwable e) {	×
474	throw new ReflectionException("Failed to invoke 'Class.isRecord()'.", e);	×
475	}
476	}
477
478	private static MethodHandle getIsRecordMethodHandle() {
479	MethodHandles.Lookup lookup = MethodHandles.lookup();	1✔
480	MethodType mt = MethodType.methodType(boolean.class);	1✔
481	try {
482	return lookup.findVirtual(Class.class, "isRecord", mt);	1✔
483	} catch (NoSuchMethodException \| IllegalAccessException e) {	×
484	return null;	×
485	}
486	}
487	}

mybatis / mybatis-3 / 2743

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