List of usage examples for org.springframework.util ClassUtils getDescriptiveType
@Nullable public static String getDescriptiveType(@Nullable Object value)
From source file:net.sf.juffrou.reflect.JuffrouTypeConverterDelegate.java
/** * Convert the value to the required type (if necessary from a String), for the specified property. * /*from w w w. ja v a 2 s . c o m*/ * @param propertyName * name of the property * @param oldValue * the previous value, if available (may be <code>null</code>) * @param newValue * the proposed new value * @param requiredType * the type we must convert to (or <code>null</code> if not known, for example in case of a collection * element) * @param typeDescriptor * the descriptor for the target property or field * @return the new value, possibly the result of type conversion * @throws IllegalArgumentException * if type conversion failed */ @SuppressWarnings("unchecked") public <T> T convertIfNecessary(String propertyName, Object oldValue, Object newValue, Class<T> requiredType, TypeDescriptor typeDescriptor) throws IllegalArgumentException { Object convertedValue = newValue; // Custom editor for this type? PropertyEditor editor = this.propertyEditorRegistry.findCustomEditor(requiredType, propertyName); ConversionFailedException firstAttemptEx = null; // No custom editor but custom ConversionService specified? ConversionService conversionService = this.propertyEditorRegistry.getConversionService(); if (editor == null && conversionService != null && convertedValue != null && typeDescriptor != null) { TypeDescriptor sourceTypeDesc = TypeDescriptor.forObject(newValue); TypeDescriptor targetTypeDesc = typeDescriptor; if (conversionService.canConvert(sourceTypeDesc, targetTypeDesc)) { try { return (T) conversionService.convert(convertedValue, sourceTypeDesc, targetTypeDesc); } catch (ConversionFailedException ex) { // fallback to default conversion logic below firstAttemptEx = ex; } } } // Value not of required type? if (editor != null || (requiredType != null && !ClassUtils.isAssignableValue(requiredType, convertedValue))) { if (requiredType != null && Collection.class.isAssignableFrom(requiredType) && convertedValue instanceof String) { TypeDescriptor elementType = typeDescriptor.getElementTypeDescriptor(); if (elementType != null && Enum.class.isAssignableFrom(elementType.getType())) { convertedValue = StringUtils.commaDelimitedListToStringArray((String) convertedValue); } } if (editor == null) { editor = findDefaultEditor(requiredType); } convertedValue = doConvertValue(oldValue, convertedValue, requiredType, editor); } boolean standardConversion = false; if (requiredType != null) { // Try to apply some standard type conversion rules if appropriate. if (convertedValue != null) { if (requiredType.isArray()) { // Array required -> apply appropriate conversion of elements. if (convertedValue instanceof String && Enum.class.isAssignableFrom(requiredType.getComponentType())) { convertedValue = StringUtils.commaDelimitedListToStringArray((String) convertedValue); } return (T) convertToTypedArray(convertedValue, propertyName, requiredType.getComponentType()); } else if (convertedValue instanceof Collection) { // Convert elements to target type, if determined. convertedValue = convertToTypedCollection((Collection) convertedValue, propertyName, requiredType, typeDescriptor); standardConversion = true; } else if (convertedValue instanceof Map) { // Convert keys and values to respective target type, if determined. convertedValue = convertToTypedMap((Map) convertedValue, propertyName, requiredType, typeDescriptor); standardConversion = true; } if (convertedValue.getClass().isArray() && Array.getLength(convertedValue) == 1) { convertedValue = Array.get(convertedValue, 0); standardConversion = true; } if (String.class.equals(requiredType) && ClassUtils.isPrimitiveOrWrapper(convertedValue.getClass())) { // We can stringify any primitive value... return (T) convertedValue.toString(); } else if (convertedValue instanceof String && !requiredType.isInstance(convertedValue)) { if (firstAttemptEx == null && !requiredType.isInterface() && !requiredType.isEnum()) { try { Constructor strCtor = requiredType.getConstructor(String.class); return (T) BeanUtils.instantiateClass(strCtor, convertedValue); } catch (NoSuchMethodException ex) { // proceed with field lookup if (logger.isTraceEnabled()) { logger.trace("No String constructor found on type [" + requiredType.getName() + "]", ex); } } catch (Exception ex) { if (logger.isDebugEnabled()) { logger.debug( "Construction via String failed for type [" + requiredType.getName() + "]", ex); } } } String trimmedValue = ((String) convertedValue).trim(); if (requiredType.isEnum() && "".equals(trimmedValue)) { // It's an empty enum identifier: reset the enum value to null. return null; } convertedValue = attemptToConvertStringToEnum(requiredType, trimmedValue, convertedValue); standardConversion = true; } } if (!ClassUtils.isAssignableValue(requiredType, convertedValue)) { if (firstAttemptEx != null) { throw firstAttemptEx; } // Definitely doesn't match: throw IllegalArgumentException/IllegalStateException StringBuilder msg = new StringBuilder(); msg.append("Cannot convert value of type [").append(ClassUtils.getDescriptiveType(newValue)); msg.append("] to required type [").append(ClassUtils.getQualifiedName(requiredType)).append("]"); if (propertyName != null) { msg.append(" for property '").append(propertyName).append("'"); } if (editor != null) { msg.append(": PropertyEditor [").append(editor.getClass().getName()) .append("] returned inappropriate value of type [") .append(ClassUtils.getDescriptiveType(convertedValue)).append("]"); throw new IllegalArgumentException(msg.toString()); } else { msg.append(": no matching editors or conversion strategy found"); throw new IllegalStateException(msg.toString()); } } } if (firstAttemptEx != null) { if (editor == null && !standardConversion && requiredType != null && !Object.class.equals(requiredType)) { throw firstAttemptEx; } logger.debug("Original ConversionService attempt failed - ignored since " + "PropertyEditor based conversion eventually succeeded", firstAttemptEx); } return (T) convertedValue; }
From source file:org.springframework.beans.factory.wiring.BeanConfigurerSupport.java
/** * Configure the bean instance./*from ww w . j a v a2s.c o m*/ * <p>Subclasses can override this to provide custom configuration logic. * Typically called by an aspect, for all bean instances matched by a pointcut. * @param beanInstance the bean instance to configure (must <b>not</b> be {@code null}) */ public void configureBean(Object beanInstance) { if (this.beanFactory == null) { if (logger.isDebugEnabled()) { logger.debug("BeanFactory has not been set on " + ClassUtils.getShortName(getClass()) + ": " + "Make sure this configurer runs in a Spring container. Unable to configure bean of type [" + ClassUtils.getDescriptiveType(beanInstance) + "]. Proceeding without injection."); } return; } BeanWiringInfoResolver bwiResolver = this.beanWiringInfoResolver; Assert.state(bwiResolver != null, "No BeanWiringInfoResolver available"); BeanWiringInfo bwi = bwiResolver.resolveWiringInfo(beanInstance); if (bwi == null) { // Skip the bean if no wiring info given. return; } ConfigurableListableBeanFactory beanFactory = this.beanFactory; Assert.state(beanFactory != null, "No BeanFactory available"); try { if (bwi.indicatesAutowiring() || (bwi.isDefaultBeanName() && bwi.getBeanName() != null && !beanFactory.containsBean(bwi.getBeanName()))) { // Perform autowiring (also applying standard factory / post-processor callbacks). beanFactory.autowireBeanProperties(beanInstance, bwi.getAutowireMode(), bwi.getDependencyCheck()); beanFactory.initializeBean(beanInstance, bwi.getBeanName()); } else { // Perform explicit wiring based on the specified bean definition. beanFactory.configureBean(beanInstance, bwi.getBeanName()); } } catch (BeanCreationException ex) { Throwable rootCause = ex.getMostSpecificCause(); if (rootCause instanceof BeanCurrentlyInCreationException) { BeanCreationException bce = (BeanCreationException) rootCause; String bceBeanName = bce.getBeanName(); if (bceBeanName != null && beanFactory.isCurrentlyInCreation(bceBeanName)) { if (logger.isDebugEnabled()) { logger.debug("Failed to create target bean '" + bce.getBeanName() + "' while configuring object of type [" + beanInstance.getClass().getName() + "] - probably due to a circular reference. This is a common startup situation " + "and usually not fatal. Proceeding without injection. Original exception: " + ex); } return; } } throw ex; } }
From source file:org.springframework.beans.TypeConverterDelegate.java
/** * Convert the value to the required type (if necessary from a String), * for the specified property./*w ww .j a v a 2 s . c o m*/ * @param propertyName name of the property * @param oldValue the previous value, if available (may be {@code null}) * @param newValue the proposed new value * @param requiredType the type we must convert to * (or {@code null} if not known, for example in case of a collection element) * @param typeDescriptor the descriptor for the target property or field * @return the new value, possibly the result of type conversion * @throws IllegalArgumentException if type conversion failed */ @SuppressWarnings("unchecked") @Nullable public <T> T convertIfNecessary(@Nullable String propertyName, @Nullable Object oldValue, @Nullable Object newValue, @Nullable Class<T> requiredType, @Nullable TypeDescriptor typeDescriptor) throws IllegalArgumentException { // Custom editor for this type? PropertyEditor editor = this.propertyEditorRegistry.findCustomEditor(requiredType, propertyName); ConversionFailedException conversionAttemptEx = null; // No custom editor but custom ConversionService specified? ConversionService conversionService = this.propertyEditorRegistry.getConversionService(); if (editor == null && conversionService != null && newValue != null && typeDescriptor != null) { TypeDescriptor sourceTypeDesc = TypeDescriptor.forObject(newValue); if (conversionService.canConvert(sourceTypeDesc, typeDescriptor)) { try { return (T) conversionService.convert(newValue, sourceTypeDesc, typeDescriptor); } catch (ConversionFailedException ex) { // fallback to default conversion logic below conversionAttemptEx = ex; } } } Object convertedValue = newValue; // Value not of required type? if (editor != null || (requiredType != null && !ClassUtils.isAssignableValue(requiredType, convertedValue))) { if (typeDescriptor != null && requiredType != null && Collection.class.isAssignableFrom(requiredType) && convertedValue instanceof String) { TypeDescriptor elementTypeDesc = typeDescriptor.getElementTypeDescriptor(); if (elementTypeDesc != null) { Class<?> elementType = elementTypeDesc.getType(); if (Class.class == elementType || Enum.class.isAssignableFrom(elementType)) { convertedValue = StringUtils.commaDelimitedListToStringArray((String) convertedValue); } } } if (editor == null) { editor = findDefaultEditor(requiredType); } convertedValue = doConvertValue(oldValue, convertedValue, requiredType, editor); } boolean standardConversion = false; if (requiredType != null) { // Try to apply some standard type conversion rules if appropriate. if (convertedValue != null) { if (Object.class == requiredType) { return (T) convertedValue; } else if (requiredType.isArray()) { // Array required -> apply appropriate conversion of elements. if (convertedValue instanceof String && Enum.class.isAssignableFrom(requiredType.getComponentType())) { convertedValue = StringUtils.commaDelimitedListToStringArray((String) convertedValue); } return (T) convertToTypedArray(convertedValue, propertyName, requiredType.getComponentType()); } else if (convertedValue instanceof Collection) { // Convert elements to target type, if determined. convertedValue = convertToTypedCollection((Collection<?>) convertedValue, propertyName, requiredType, typeDescriptor); standardConversion = true; } else if (convertedValue instanceof Map) { // Convert keys and values to respective target type, if determined. convertedValue = convertToTypedMap((Map<?, ?>) convertedValue, propertyName, requiredType, typeDescriptor); standardConversion = true; } if (convertedValue.getClass().isArray() && Array.getLength(convertedValue) == 1) { convertedValue = Array.get(convertedValue, 0); standardConversion = true; } if (String.class == requiredType && ClassUtils.isPrimitiveOrWrapper(convertedValue.getClass())) { // We can stringify any primitive value... return (T) convertedValue.toString(); } else if (convertedValue instanceof String && !requiredType.isInstance(convertedValue)) { if (conversionAttemptEx == null && !requiredType.isInterface() && !requiredType.isEnum()) { try { Constructor<T> strCtor = requiredType.getConstructor(String.class); return BeanUtils.instantiateClass(strCtor, convertedValue); } catch (NoSuchMethodException ex) { // proceed with field lookup if (logger.isTraceEnabled()) { logger.trace("No String constructor found on type [" + requiredType.getName() + "]", ex); } } catch (Exception ex) { if (logger.isDebugEnabled()) { logger.debug( "Construction via String failed for type [" + requiredType.getName() + "]", ex); } } } String trimmedValue = ((String) convertedValue).trim(); if (requiredType.isEnum() && "".equals(trimmedValue)) { // It's an empty enum identifier: reset the enum value to null. return null; } convertedValue = attemptToConvertStringToEnum(requiredType, trimmedValue, convertedValue); standardConversion = true; } else if (convertedValue instanceof Number && Number.class.isAssignableFrom(requiredType)) { convertedValue = NumberUtils.convertNumberToTargetClass((Number) convertedValue, (Class<Number>) requiredType); standardConversion = true; } } else { // convertedValue == null if (requiredType == Optional.class) { convertedValue = Optional.empty(); } } if (!ClassUtils.isAssignableValue(requiredType, convertedValue)) { if (conversionAttemptEx != null) { // Original exception from former ConversionService call above... throw conversionAttemptEx; } else if (conversionService != null && typeDescriptor != null) { // ConversionService not tried before, probably custom editor found // but editor couldn't produce the required type... TypeDescriptor sourceTypeDesc = TypeDescriptor.forObject(newValue); if (conversionService.canConvert(sourceTypeDesc, typeDescriptor)) { return (T) conversionService.convert(newValue, sourceTypeDesc, typeDescriptor); } } // Definitely doesn't match: throw IllegalArgumentException/IllegalStateException StringBuilder msg = new StringBuilder(); msg.append("Cannot convert value of type '").append(ClassUtils.getDescriptiveType(newValue)); msg.append("' to required type '").append(ClassUtils.getQualifiedName(requiredType)).append("'"); if (propertyName != null) { msg.append(" for property '").append(propertyName).append("'"); } if (editor != null) { msg.append(": PropertyEditor [").append(editor.getClass().getName()) .append("] returned inappropriate value of type '") .append(ClassUtils.getDescriptiveType(convertedValue)).append("'"); throw new IllegalArgumentException(msg.toString()); } else { msg.append(": no matching editors or conversion strategy found"); throw new IllegalStateException(msg.toString()); } } } if (conversionAttemptEx != null) { if (editor == null && !standardConversion && requiredType != null && Object.class != requiredType) { throw conversionAttemptEx; } logger.debug("Original ConversionService attempt failed - ignored since " + "PropertyEditor based conversion eventually succeeded", conversionAttemptEx); } return (T) convertedValue; }
From source file:org.springframework.remoting.httpinvoker.AbstractHttpInvokerRequestExecutor.java
/** * Perform the actual reading of an invocation object from the * given ObjectInputStream./*from ww w . j a va 2 s.c om*/ * <p>The default implementation simply calls {@code readObject}. * Can be overridden for deserialization of a custom wrapper object rather * than the plain invocation, for example an encryption-aware holder. * @param ois the ObjectInputStream to read from * @return the RemoteInvocationResult object * @throws IOException if thrown by I/O methods * @throws ClassNotFoundException if the class name of a serialized object * couldn't get resolved * @see java.io.ObjectOutputStream#writeObject */ protected RemoteInvocationResult doReadRemoteInvocationResult(ObjectInputStream ois) throws IOException, ClassNotFoundException { Object obj = ois.readObject(); if (!(obj instanceof RemoteInvocationResult)) { throw new RemoteException("Deserialized object needs to be assignable to type [" + RemoteInvocationResult.class.getName() + "]: " + ClassUtils.getDescriptiveType(obj)); } return (RemoteInvocationResult) obj; }
From source file:org.tinygroup.beanwrapper.TypeConverterDelegate.java
/** * Convert the value to the required type (if necessary from a String), * for the specified property./*w w w . ja v a 2 s .c o m*/ * @param propertyName name of the property * @param oldValue the previous value, if available (may be <code>null</code>) * @param newValue the proposed new value * @param requiredType the type we must convert to * (or <code>null</code> if not known, for example in case of a collection element) * @param descriptor the JavaBeans descriptor for the property * @param methodParam the method parameter that is the target of the conversion * (may be <code>null</code>) * @return the new value, possibly the result of type conversion * @throws IllegalArgumentException if type conversion failed */ protected Object convertIfNecessary(String propertyName, Object oldValue, Object newValue, Class requiredType, PropertyDescriptor descriptor, MethodParameter methodParam) throws IllegalArgumentException { Object convertedValue = newValue; // Custom editor for this type? PropertyEditor editor = this.propertyEditorRegistry.findCustomEditor(requiredType, propertyName); // Value not of required type? if (editor != null || (requiredType != null && !ClassUtils.isAssignableValue(requiredType, convertedValue))) { if (editor == null) { editor = findDefaultEditor(requiredType, descriptor); } convertedValue = doConvertValue(oldValue, convertedValue, requiredType, editor); } if (requiredType != null) { // Try to apply some standard type conversion rules if appropriate. if (convertedValue != null) { if (String.class.equals(requiredType) && ClassUtils.isPrimitiveOrWrapper(convertedValue.getClass())) { // We can stringify any primitive value... return convertedValue.toString(); } else if (requiredType.isArray()) { // Array required -> apply appropriate conversion of elements. return convertToTypedArray(convertedValue, propertyName, requiredType.getComponentType()); } else if (convertedValue instanceof Collection && CollectionFactory.isApproximableCollectionType(requiredType)) { // Convert elements to target type, if determined. convertedValue = convertToTypedCollection((Collection) convertedValue, propertyName, methodParam); } else if (convertedValue instanceof Map && CollectionFactory.isApproximableMapType(requiredType)) { // Convert keys and values to respective target type, if determined. convertedValue = convertToTypedMap((Map) convertedValue, propertyName, methodParam); } else if (convertedValue instanceof String && !requiredType.isInstance(convertedValue)) { String strValue = ((String) convertedValue).trim(); if (JdkVersion.isAtLeastJava15() && requiredType.isEnum() && "".equals(strValue)) { // It's an empty enum identifier: reset the enum value to null. return null; } // Try field lookup as fallback: for JDK 1.5 enum or custom enum // with values defined as static fields. Resulting value still needs // to be checked, hence we don't return it right away. try { Field enumField = requiredType.getField(strValue); convertedValue = enumField.get(null); } catch (Exception ex) { if (logger.isTraceEnabled()) { logger.trace("Field [" + convertedValue + "] isn't an enum value", ex); } } } } if (!ClassUtils.isAssignableValue(requiredType, convertedValue)) { // Definitely doesn't match: throw IllegalArgumentException. StringBuffer msg = new StringBuffer(); msg.append("Cannot convert value of type [").append(ClassUtils.getDescriptiveType(newValue)); msg.append("] to required type [").append(ClassUtils.getQualifiedName(requiredType)).append("]"); if (propertyName != null) { msg.append(" for property '" + propertyName + "'"); } if (editor != null) { msg.append( ": PropertyEditor [" + editor.getClass().getName() + "] returned inappropriate value"); } else { msg.append(": no matching editors or conversion strategy found"); } throw new IllegalArgumentException(msg.toString()); } } return convertedValue; }