org.eclipse.persistence.internal.helper.Helper.getDeclaredMethod()方法的使用及代码示例

x33g5p2x  于2022-01-20 转载在 其他  
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本文整理了Java中org.eclipse.persistence.internal.helper.Helper.getDeclaredMethod()方法的一些代码示例，展示了Helper.getDeclaredMethod()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Helper.getDeclaredMethod()方法的具体详情如下：
包路径：org.eclipse.persistence.internal.helper.Helper
类名称：Helper
方法名：getDeclaredMethod

Helper.getDeclaredMethod介绍

[英]INTERNAL: Returns a Method for the specified Class, method name, and that has no parameters. Uses Class.getDeclaredMethod(String Class[]) to find the method. If the method is not found on the specified class the superclass is checked, and so on, recursively. Set accessible to true, so we can access private/package/protected methods.
[中]内部：返回指定类、方法名和无参数的方法。使用类。getDeclaredMethod（String类[]）来查找该方法。如果在指定的类上找不到该方法，则递归地检查超类，依此类推。将accessible设置为true，这样我们就可以访问private/package/protected方法。

代码示例

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

/**
 * INTERNAL:
 * Returns a Method for the specified Class, method name, and that has no
 * parameters. Uses Class.getDeclaredMethod(String Class[]) to find the
 * method. If the method is not found on the specified class the superclass
 * is checked, and so on, recursively. Set accessible to true, so we can
 * access private/package/protected methods.
 */
public static Method getDeclaredMethod(Class javaClass, String methodName) throws NoSuchMethodException {
  return getDeclaredMethod(javaClass, methodName, (Class[]) null);
}

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.oracle

public XDKPlatform() {
  super();
  try {
    Class[] argTypes = { URL.class };
    buildSchemaMethod = Helper.getDeclaredMethod(XSDBuilder.class, "build", argTypes);
  } catch (NoSuchMethodException e) {
  }
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

public XDKPlatform() {
  super();
  try {
    Class[] argTypes = { URL.class };
    buildSchemaMethod = Helper.getDeclaredMethod(XSDBuilder.class, "build", argTypes);
  } catch (NoSuchMethodException e) {
  }
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

/**
 * INTERNAL:
 * Returns a Method for the specified Class, method name, and that has no
 * parameters. Uses Class.getDeclaredMethod(String Class[]) to find the
 * method. If the method is not found on the specified class the superclass
 * is checked, and so on, recursively. Set accessible to true, so we can
 * access private/package/protected methods.
 */
public static Method getDeclaredMethod(Class javaClass, String methodName) throws NoSuchMethodException {
  return getDeclaredMethod(javaClass, methodName, (Class[]) null);
}

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * INTERNAL:
 * Returns a Method for the specified Class, method name, and that has no
 * parameters. Uses Class.getDeclaredMethod(String Class[]) to find the
 * method. If the method is not found on the specified class the superclass
 * is checked, and so on, recursively. Set accessible to true, so we can
 * access private/package/protected methods.
 */
public static Method getDeclaredMethod(Class javaClass, String methodName) throws NoSuchMethodException {
  return getDeclaredMethod(javaClass, methodName, (Class[]) null);
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

/**
 * Build the specified method.
 */
protected Method buildMethod(Class methodClass, String methodName, Class[] methodParameterTypes) throws DescriptorException {
  try {
    return Helper.getDeclaredMethod(methodClass, methodName, methodParameterTypes);
  } catch (NoSuchMethodException exception) {
    throw DescriptorException.noSuchMethodWhileInitializingInstantiationPolicy(methodClass.getName() + "." + methodName, this.getDescriptor(), exception);
  } catch (SecurityException exception) {
    throw DescriptorException.securityWhileInitializingInstantiationPolicy(methodClass.getName() + "." + methodName, this.getDescriptor(), exception);
  }
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

/**
 * INTERNAL:
 * Set the keyMethod or keyField based on the keyName.
 */
protected void initializeKey() {
  // Should only run through this once ...
  if (keyName != null && keyMethod == null && keyField == null) {
    try {
      keyMethod = Helper.getDeclaredMethod(elementClass, keyName, (Class[]) null);
    } catch (NoSuchMethodException ex) {
      try {
        keyField = Helper.getField(elementClass, keyName);
      } catch (NoSuchFieldException e) {
        throw ValidationException.mapKeyNotDeclaredInItemClass(keyName, elementClass);    
      }
    }
  }
}

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * INTERNAL:
 * Set the keyMethod or keyField based on the keyName
 */
protected void initializeKey(){
  // Should only run through this once ...
  if (keyName != null && keyMethod == null && keyField == null) {
    try {
      keyMethod = Helper.getDeclaredMethod(elementClass, keyName, (Class[]) null);
    } catch (NoSuchMethodException ex) {
      try {
        keyField = Helper.getField(elementClass, keyName);
      } catch (NoSuchFieldException e) {
        throw ValidationException.mapKeyNotDeclaredInItemClass(keyName, elementClass);    
      }
    }
  }
}

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

/**
 * Build the specified method.
 */
protected Method buildMethod(Class methodClass, String methodName, Class[] methodParameterTypes) throws DescriptorException {
  try {
    return Helper.getDeclaredMethod(methodClass, methodName, methodParameterTypes);
  } catch (NoSuchMethodException exception) {
    throw DescriptorException.noSuchMethodWhileInitializingInstantiationPolicy(methodClass.getName() + "." + methodName, this.getDescriptor(), exception);
  } catch (SecurityException exception) {
    throw DescriptorException.securityWhileInitializingInstantiationPolicy(methodClass.getName() + "." + methodName, this.getDescriptor(), exception);
  }
}

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * Build the specified method.
 */
protected Method buildMethod(Class methodClass, String methodName, Class[] methodParameterTypes) throws DescriptorException {
  try {
    return Helper.getDeclaredMethod(methodClass, methodName, methodParameterTypes);
  } catch (NoSuchMethodException exception) {
    throw DescriptorException.noSuchMethodWhileInitializingInstantiationPolicy(methodClass.getName() + "." + methodName, this.getDescriptor(), exception);
  } catch (SecurityException exception) {
    throw DescriptorException.securityWhileInitializingInstantiationPolicy(methodClass.getName() + "." + methodName, this.getDescriptor(), exception);
  }
}

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

/**
 * INTERNAL:
 * Set the keyMethod or keyField based on the keyName.
 */
protected void initializeKey() {
  // Should only run through this once ...
  if (keyName != null && keyMethod == null && keyField == null) {
    try {
      keyMethod = Helper.getDeclaredMethod(elementClass, keyName, (Class[]) null);
    } catch (NoSuchMethodException ex) {
      try {
        keyField = Helper.getField(elementClass, keyName);
      } catch (NoSuchFieldException e) {
        throw ValidationException.mapKeyNotDeclaredInItemClass(keyName, elementClass);
      }
    }
  }
}

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

/**
 * Find the method corresponding to the event selector. The method MUST take
 * DescriptorEvent as argument, Session is also supported as argument for
 * backward compatibility.
 */
protected Method findMethod(int selector) throws DescriptorException {
  Class[] declarationParameters = new Class[1];
  declarationParameters[0] = ClassConstants.DescriptorEvent_Class;
  String methodName = getEventSelectors().get(selector);
  try {
    return Helper.getDeclaredMethod(getDescriptor().getJavaClass(), methodName, declarationParameters);
  } catch (NoSuchMethodException exception) {
    throw DescriptorException.noSuchMethodOnFindObsoleteMethod(methodName, getDescriptor(), exception);
  } catch (SecurityException exception) {
    throw DescriptorException.securityOnFindMethod(methodName, getDescriptor(), exception);
  }
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

/**
 * Find the method corresponding to the event selector. The method MUST take 
 * DescriptorEvent as argument, Session is also supported as argument for 
 * backward compatibility.
 */
protected Method findMethod(int selector) throws DescriptorException {
  Class[] declarationParameters = new Class[1];
  declarationParameters[0] = ClassConstants.DescriptorEvent_Class;
  String methodName = (String)getEventSelectors().elementAt(selector);
  try {
    return Helper.getDeclaredMethod(getDescriptor().getJavaClass(), methodName, declarationParameters);
  } catch (NoSuchMethodException exception) {
    throw DescriptorException.noSuchMethodOnFindObsoleteMethod(methodName, getDescriptor(), exception);
  } catch (SecurityException exception) {
    throw DescriptorException.securityOnFindMethod(methodName, getDescriptor(), exception);
  }
}

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * Find the method corresponding to the event selector. The method MUST take 
 * DescriptorEvent as argument, Session is also supported as argument for 
 * backward compatibility.
 */
protected Method findMethod(int selector) throws DescriptorException {
  Class[] declarationParameters = new Class[1];
  declarationParameters[0] = ClassConstants.DescriptorEvent_Class;
  String methodName = (String)getEventSelectors().elementAt(selector);
  try {
    return Helper.getDeclaredMethod(getDescriptor().getJavaClass(), methodName, declarationParameters);
  } catch (NoSuchMethodException exception) {
    throw DescriptorException.noSuchMethodOnFindObsoleteMethod(methodName, getDescriptor(), exception);
  } catch (SecurityException exception) {
    throw DescriptorException.securityOnFindMethod(methodName, getDescriptor(), exception);
  }
}

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * INTERNAL:
 * Setup the default classExtractionMethod, or if one was specified by the user make sure it is valid.
 */
public void initialize(ClassDescriptor descriptor, Session session) throws DescriptorException {
  setDescriptor(descriptor);
  Class[] declarationParameters = new Class[1];
  declarationParameters[0] = ClassConstants.DatabaseRow_Class;
  try {
    setClassExtractionMethod(Helper.getDeclaredMethod(descriptor.getJavaClass(), getClassExtractionMethodName(), declarationParameters));
  } catch (NoSuchMethodException ignore) {
    declarationParameters[0] = ClassConstants.Record_Class;
    try {
      setClassExtractionMethod(Helper.getDeclaredMethod(descriptor.getJavaClass(), getClassExtractionMethodName(), declarationParameters));
    } catch (NoSuchMethodException exception) {
      throw DescriptorException.noSuchMethodWhileInitializingClassExtractionMethod(getClassExtractionMethodName(), descriptor, exception);
    }
  } catch (SecurityException exception) {
    throw DescriptorException.securityWhileInitializingClassExtractionMethod(getClassExtractionMethodName(), descriptor, exception);
  }
  // CR#2818667 Ensure the method is static.
  if (!Modifier.isStatic(getClassExtractionMethod().getModifiers())) {
    throw DescriptorException.classExtractionMethodMustBeStatic(getClassExtractionMethodName(), descriptor);
  }
}

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.moxy

/**
 * Override to avoid exceptions due to lack of get method.
 */
public void initializeAttributes(Class theJavaClass) throws DescriptorException {
  if (getAttributeName() == null) {
    throw DescriptorException.attributeNameNotSpecified();
  }
  try {
    if (!isWriteOnly()) {
      Class[] parameterTypes = new Class[1];
      parameterTypes[0] = Helper.getClassFromClasseName(parameterTypeAsString, loader);
      attributeClassification = parameterTypes[0];
      setSetMethod(Helper.getDeclaredMethod(theJavaClass, setMethodName, parameterTypes));
    }
  } catch (NoSuchMethodException ex) {
    DescriptorException descriptorException = DescriptorException.noSuchMethodWhileInitializingAttributesInMethodAccessor(getSetMethodName(), getGetMethodName(), theJavaClass.getName());
    descriptorException.setInternalException(ex);
    throw descriptorException;
  }
}

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * Set get and set method after creating these methods by using
 * get and set method names
 */
public void initializeAttributes(Class theJavaClass) throws DescriptorException {
  if (getAttributeName() == null) {
    throw DescriptorException.attributeNameNotSpecified();
  }
  try {
    setGetMethod(Helper.getDeclaredMethod(theJavaClass, getGetMethodName(), (Class[])null));
    // The parameter type for the set method must always be the return type of the get method.
    if(!isWriteOnly()) {
      Class[] parameterTypes = new Class[1];
      parameterTypes[0] = getGetMethodReturnType();
      setSetMethod(Helper.getDeclaredMethod(theJavaClass, getSetMethodName(), parameterTypes));
    }
  } catch (NoSuchMethodException ex) {
    DescriptorException descriptorException = DescriptorException.noSuchMethodWhileInitializingAttributesInMethodAccessor(getSetMethodName(), getGetMethodName(), theJavaClass.getName());
    descriptorException.setInternalException(ex);
    throw descriptorException;
  } catch (SecurityException exception) {
    DescriptorException descriptorException = DescriptorException.securityWhileInitializingAttributesInMethodAccessor(getSetMethodName(), getGetMethodName(), theJavaClass.getName());
    descriptorException.setInternalException(exception);
    throw descriptorException;
  }
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

/**
 * Override to avoid exceptions due to lack of get method.
 */
public void initializeAttributes(Class theJavaClass) throws DescriptorException {
  if (getAttributeName() == null) {
    throw DescriptorException.attributeNameNotSpecified();
  }
  try {
    if (!isWriteOnly()) {
      Class[] parameterTypes = new Class[1];
      parameterTypes[0] = Helper.getClassFromClasseName(parameterTypeAsString, loader);
      attributeClassification = parameterTypes[0];
      setSetMethod(Helper.getDeclaredMethod(theJavaClass, setMethodName, parameterTypes));
    }
  } catch (NoSuchMethodException ex) {
    DescriptorException descriptorException = DescriptorException.noSuchMethodWhileInitializingAttributesInMethodAccessor(getSetMethodName(), getGetMethodName(), theJavaClass.getName());
    descriptorException.setInternalException(ex);
    throw descriptorException;
  }
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

/**
 * INTERNAL:
 * Setup the default classExtractionMethod, or if one was specified by the user make sure it is valid.
 */
public void initialize(ClassDescriptor descriptor, Session session) throws DescriptorException {
  setDescriptor(descriptor);
  Class[] declarationParameters = new Class[1];
  declarationParameters[0] = ClassConstants.DatabaseRow_Class;
  try {
    setClassExtractionMethod(Helper.getDeclaredMethod(descriptor.getJavaClass(), getClassExtractionMethodName(), declarationParameters));
  } catch (NoSuchMethodException ignore) {
    declarationParameters[0] = ClassConstants.Record_Class;
    try {
      setClassExtractionMethod(Helper.getDeclaredMethod(descriptor.getJavaClass(), getClassExtractionMethodName(), declarationParameters));
    } catch (NoSuchMethodException exception) {
      throw DescriptorException.noSuchMethodWhileInitializingClassExtractionMethod(getClassExtractionMethodName(), descriptor, exception);
    } catch (SecurityException exception) {
      throw DescriptorException.securityWhileInitializingClassExtractionMethod(getClassExtractionMethodName(), descriptor, exception);
    }
  } catch (SecurityException exception) {
    throw DescriptorException.securityWhileInitializingClassExtractionMethod(getClassExtractionMethodName(), descriptor, exception);
  }
  // CR#2818667 Ensure the method is static.
  if (!Modifier.isStatic(getClassExtractionMethod().getModifiers())) {
    throw DescriptorException.classExtractionMethodMustBeStatic(getClassExtractionMethodName(), descriptor);
  }
}

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * This method will lazily initialize the set method
 * Lazy initialization occurs to that we are not required to have a handle on
 * the actual class that we are using until runtime.  This helps to satisfy the 
 * weaving requirement that demands that we avoid loading domain classes into
 * the main class loader until after weaving occurs.
 */
protected Method getSetMethod() {
  if (setMethod == null) {
    ForeignReferenceMapping sourceMapping = (ForeignReferenceMapping)mapping;
    // The parameter type for the set method must always be the return type of the get method.
    Class[] parameterTypes = new Class[1];
    parameterTypes[0] = sourceMapping.getReferenceClass();
    try {
      setMethod = Helper.getDeclaredMethod(sourceMapping.getDescriptor().getJavaClass(), setMethodName, parameterTypes);
    } catch (NoSuchMethodException e){
      throw DescriptorException.errorAccessingSetMethodOfEntity(sourceMapping.getDescriptor().getJavaClass(), setMethodName ,sourceMapping.getDescriptor(), e);
    }
  }
  return setMethod;
}

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