| /* |
| * Copyright (c) 1998, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // mmacivor - March 10/2009 - Initial implementation |
| package org.eclipse.persistence.internal.jaxb; |
| |
| import java.lang.reflect.InvocationTargetException; |
| |
| import org.eclipse.persistence.exceptions.DescriptorException; |
| import org.eclipse.persistence.exceptions.ValidationException; |
| import org.eclipse.persistence.internal.descriptors.InstantiationPolicy; |
| import org.eclipse.persistence.internal.security.PrivilegedAccessHelper; |
| |
| /** |
| * Purpose: |
| * Provide a version of Instantiation Policy that can make use of a multiple argument factory method. |
| * The defaultValues specified on this policy will be passed in to the factory method for the parameter values. |
| * |
| * This is required for certain JAXB generated classes that have no 0 arg constructor and a factory method with multiple arguments. |
| * @author mmacivor |
| * |
| */ |
| public class MultiArgInstantiationPolicy extends InstantiationPolicy { |
| private String[] parameterTypeNames; |
| private Class<?>[] parameterTypes; |
| |
| private Object[] defaultValues; |
| |
| |
| public void setParameterTypeNames(String[] parameterTypeNames) { |
| this.parameterTypeNames = parameterTypeNames; |
| } |
| |
| public void setParameterTypes(Class<?>[] parameterTypes) { |
| this.parameterTypes = parameterTypes; |
| } |
| |
| public void setDefaultValues(Object[] values) { |
| defaultValues = values; |
| } |
| |
| @Override |
| public void convertClassNamesToClasses(ClassLoader loader) { |
| super.convertClassNamesToClasses(loader); |
| if(parameterTypes == null) { |
| if(parameterTypeNames != null) { |
| Class<?>[] values = new Class<?>[parameterTypeNames.length]; |
| for(int i = 0; i < values.length; i++) { |
| final String parameterTypeName = parameterTypeNames[i]; |
| values[i] = PrivilegedAccessHelper.callDoPrivilegedWithException( |
| () -> org.eclipse.persistence.internal.security.PrivilegedAccessHelper.getClassForName(parameterTypeName, true, loader), |
| (ex) -> ValidationException.classNotFoundWhileConvertingClassNames(factoryClassName, ex) |
| ); |
| } |
| this.parameterTypes = values; |
| } |
| } |
| |
| } |
| @Override |
| protected void initializeMethod() throws DescriptorException { |
| Class<?> tempClass; |
| if (this.getFactory() != null) { |
| tempClass = this.getFactory().getClass(); |
| } else if (this.getFactoryClass() == null) { |
| tempClass = this.getDescriptor().getJavaClass(); |
| } else { |
| tempClass = this.getFactoryClass(); |
| } |
| if(this.parameterTypes == null) { |
| this.setMethod(this.buildMethod(tempClass, this.getMethodName(), new Class<?>[0])); |
| } else { |
| this.setMethod(this.buildMethod(tempClass, this.getMethodName(), this.parameterTypes)); |
| } |
| } |
| |
| /** |
| * Build and return a new instance, using the factory. |
| * The factory can be null, in which case the method is a static method defined by the descriptor class. |
| */ |
| @Override |
| protected Object buildNewInstanceUsingFactory() throws DescriptorException { |
| return PrivilegedAccessHelper.callDoPrivilegedWithException( |
| () -> PrivilegedAccessHelper.invokeMethod(getMethod(), getFactory(), this.defaultValues), |
| (ex) -> { |
| if (ex instanceof IllegalAccessException) { |
| return DescriptorException.illegalAccessWhileMethodInstantiation(getMethod().toString(), this.getDescriptor(), ex); |
| } else if (ex instanceof InvocationTargetException) { |
| return DescriptorException.targetInvocationWhileMethodInstantiation(getMethod().toString(), this.getDescriptor(), ex); |
| } else if (ex instanceof NullPointerException) { |
| return DescriptorException.nullPointerWhileMethodInstantiation(this.getMethod().toString(), this.getDescriptor(), ex); |
| } else { |
| return new RuntimeException("Unexpected exception from MultiArgInstantiationPolicy.buildNewInstanceUsingFactory()", ex); |
| } |
| } |
| ); |
| } |
| |
| } |