List of usage examples for org.springframework.core.convert TypeDescriptor getMapValueTypeDescriptor
@Nullable
public TypeDescriptor getMapValueTypeDescriptor()
From source file:net.sf.juffrou.reflect.JuffrouTypeConverterDelegate.java
@SuppressWarnings("unchecked") private Map convertToTypedMap(Map original, String propertyName, Class requiredType, TypeDescriptor typeDescriptor) { if (!Map.class.isAssignableFrom(requiredType)) { return original; }/* w ww . j ava 2s .c o m*/ boolean approximable = CollectionFactory.isApproximableMapType(requiredType); if (!approximable && !canCreateCopy(requiredType)) { if (logger.isDebugEnabled()) { logger.debug("Custom Map type [" + original.getClass().getName() + "] does not allow for creating a copy - injecting original Map as-is"); } return original; } boolean originalAllowed = requiredType.isInstance(original); typeDescriptor = typeDescriptor.narrow(original); TypeDescriptor keyType = typeDescriptor.getMapKeyTypeDescriptor(); TypeDescriptor valueType = typeDescriptor.getMapValueTypeDescriptor(); if (keyType == null && valueType == null && originalAllowed && !this.propertyEditorRegistry.hasCustomEditorForElement(null, propertyName)) { return original; } Iterator it; try { it = original.entrySet().iterator(); if (it == null) { if (logger.isDebugEnabled()) { logger.debug("Map of type [" + original.getClass().getName() + "] returned null Iterator - injecting original Map as-is"); } return original; } } catch (Throwable ex) { if (logger.isDebugEnabled()) { logger.debug("Cannot access Map of type [" + original.getClass().getName() + "] - injecting original Map as-is: " + ex); } return original; } Map convertedCopy; try { if (approximable) { convertedCopy = CollectionFactory.createApproximateMap(original, original.size()); } else { convertedCopy = (Map) requiredType.newInstance(); } } catch (Throwable ex) { if (logger.isDebugEnabled()) { logger.debug("Cannot create copy of Map type [" + original.getClass().getName() + "] - injecting original Map as-is: " + ex); } return original; } while (it.hasNext()) { Map.Entry entry = (Map.Entry) it.next(); Object key = entry.getKey(); Object value = entry.getValue(); String keyedPropertyName = buildKeyedPropertyName(propertyName, key); Object convertedKey = convertIfNecessary(keyedPropertyName, null, key, (keyType != null ? keyType.getType() : null), keyType); Object convertedValue = convertIfNecessary(keyedPropertyName, null, value, (valueType != null ? valueType.getType() : null), valueType); try { convertedCopy.put(convertedKey, convertedValue); } catch (Throwable ex) { if (logger.isDebugEnabled()) { logger.debug("Map type [" + original.getClass().getName() + "] seems to be read-only - injecting original Map as-is: " + ex); } return original; } originalAllowed = originalAllowed && (key == convertedKey) && (value == convertedValue); } return (originalAllowed ? original : convertedCopy); }
From source file:org.springframework.beans.TypeConverterDelegate.java
@SuppressWarnings("unchecked") private Map<?, ?> convertToTypedMap(Map<?, ?> original, @Nullable String propertyName, Class<?> requiredType, @Nullable TypeDescriptor typeDescriptor) { if (!Map.class.isAssignableFrom(requiredType)) { return original; }/*from w w w . j a va2s. com*/ boolean approximable = CollectionFactory.isApproximableMapType(requiredType); if (!approximable && !canCreateCopy(requiredType)) { if (logger.isDebugEnabled()) { logger.debug("Custom Map type [" + original.getClass().getName() + "] does not allow for creating a copy - injecting original Map as-is"); } return original; } boolean originalAllowed = requiredType.isInstance(original); TypeDescriptor keyType = (typeDescriptor != null ? typeDescriptor.getMapKeyTypeDescriptor() : null); TypeDescriptor valueType = (typeDescriptor != null ? typeDescriptor.getMapValueTypeDescriptor() : null); if (keyType == null && valueType == null && originalAllowed && !this.propertyEditorRegistry.hasCustomEditorForElement(null, propertyName)) { return original; } Iterator<?> it; try { it = original.entrySet().iterator(); } catch (Throwable ex) { if (logger.isDebugEnabled()) { logger.debug("Cannot access Map of type [" + original.getClass().getName() + "] - injecting original Map as-is: " + ex); } return original; } Map<Object, Object> convertedCopy; try { if (approximable) { convertedCopy = CollectionFactory.createApproximateMap(original, original.size()); } else { convertedCopy = (Map<Object, Object>) ReflectionUtils.accessibleConstructor(requiredType) .newInstance(); } } catch (Throwable ex) { if (logger.isDebugEnabled()) { logger.debug("Cannot create copy of Map type [" + original.getClass().getName() + "] - injecting original Map as-is: " + ex); } return original; } while (it.hasNext()) { Map.Entry<?, ?> entry = (Map.Entry<?, ?>) it.next(); Object key = entry.getKey(); Object value = entry.getValue(); String keyedPropertyName = buildKeyedPropertyName(propertyName, key); Object convertedKey = convertIfNecessary(keyedPropertyName, null, key, (keyType != null ? keyType.getType() : null), keyType); Object convertedValue = convertIfNecessary(keyedPropertyName, null, value, (valueType != null ? valueType.getType() : null), valueType); try { convertedCopy.put(convertedKey, convertedValue); } catch (Throwable ex) { if (logger.isDebugEnabled()) { logger.debug("Map type [" + original.getClass().getName() + "] seems to be read-only - injecting original Map as-is: " + ex); } return original; } originalAllowed = originalAllowed && (key == convertedKey) && (value == convertedValue); } return (originalAllowed ? original : convertedCopy); }