Java Code Examples for org.springframework.core.convert.TypeDescriptor#getType()

The following examples show how to use org.springframework.core.convert.TypeDescriptor#getType() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: StringToEnumConverter.java    From mica with GNU Lesser General Public License v3.0 6 votes vote down vote up
@Nullable
@Override
public Object convert(@Nullable Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
	if (StringUtil.isBlank((String) source)) {
		return null;
	}
	Class<?> clazz = targetType.getType();
	AccessibleObject accessibleObject = ENUM_CACHE_MAP.computeIfAbsent(clazz, StringToEnumConverter::getAnnotation);
	String value = ((String) source).trim();
	// 如果为null,走默认的转换
	if (accessibleObject == null) {
		return valueOf(clazz, value);
	}
	try {
		return StringToEnumConverter.invoke(clazz, accessibleObject, value);
	} catch (Exception e) {
		log.error(e.getMessage(), e);
	}
	return null;
}
 
Example 2
Source File: QuerydslUtils.java    From gvnix with GNU General Public License v3.0 6 votes vote down vote up
/**
 * Check if a string is valid for a type <br/>
 * If conversion service is not provided try to check by apache commons
 * utilities. <b>TODO</b> in this (no-conversionService) case just
 * implemented for numerics
 * 
 * @param string
 * @param typeDescriptor
 * @param conversionService (optional)
 * @return
 */
private static boolean isValidValueFor(String string,
        TypeDescriptor typeDescriptor, ConversionService conversionService) {
    if (conversionService != null) {
        try {
            conversionService.convert(string, STRING_TYPE_DESCRIPTOR,
                    typeDescriptor);
        }
        catch (ConversionException e) {
            return false;
        }
        return true;
    }
    else {
        Class<?> fieldType = typeDescriptor.getType();
        if (Number.class.isAssignableFrom(fieldType)
                || NUMBER_PRIMITIVES.contains(fieldType)) {
            return NumberUtils.isNumber(string);
        }
        // TODO implement other types
        return true;
    }
}
 
Example 3
Source File: QuerydslUtilsBeanImpl.java    From gvnix with GNU General Public License v3.0 6 votes vote down vote up
/**
 * {@inheritDoc}
 */
@Override
public <T> TypeDescriptor getTypeDescriptor(String fieldName,
        PathBuilder<T> entity) {
    Class<?> entityType = entity.getType();
    if (entityType == Object.class) {
        // Remove from path the root "entity" alias
        String fromRootPath = entity.toString().replaceFirst("^[^.]+[.]",
                "");
        TypeDescriptor fromRoot = getTypeDescriptor(fromRootPath, entity
                .getRoot().getType());
        if (fromRoot == null) {
            return null;
        }
        entityType = fromRoot.getType();
    }
    return getTypeDescriptor(fieldName, entityType);
}
 
Example 4
Source File: EnumToStringConverter.java    From blade-tool with GNU Lesser General Public License v3.0 6 votes vote down vote up
@Override
public Object convert(@Nullable Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
	if (source == null) {
		return null;
	}
	Class<?> sourceClazz = sourceType.getType();
	AccessibleObject accessibleObject = ENUM_CACHE_MAP.computeIfAbsent(sourceClazz, EnumToStringConverter::getAnnotation);
	Class<?> targetClazz = targetType.getType();
	// 如果为null,走默认的转换
	if (accessibleObject == null) {
		if (String.class == targetClazz) {
			return ((Enum) source).name();
		}
		int ordinal = ((Enum) source).ordinal();
		return ConvertUtil.convert(ordinal, targetClazz);
	}
	try {
		return EnumToStringConverter.invoke(sourceClazz, accessibleObject, source, targetClazz);
	} catch (Exception e) {
		log.error(e.getMessage(), e);
	}
	return null;
}
 
Example 5
Source File: BooleanExpressionTests.java    From java-technology-stack with MIT License 6 votes vote down vote up
@Test
public void testConvertAndHandleNull() { // SPR-9445
	// without null conversion
	evaluateAndCheckError("null or true", SpelMessage.TYPE_CONVERSION_ERROR, 0, "null", "boolean");
	evaluateAndCheckError("null and true", SpelMessage.TYPE_CONVERSION_ERROR, 0, "null", "boolean");
	evaluateAndCheckError("!null", SpelMessage.TYPE_CONVERSION_ERROR, 1, "null", "boolean");
	evaluateAndCheckError("null ? 'foo' : 'bar'", SpelMessage.TYPE_CONVERSION_ERROR, 0, "null", "boolean");

	// with null conversion (null -> false)
	GenericConversionService conversionService = new GenericConversionService() {
		@Override
		protected Object convertNullSource(TypeDescriptor sourceType, TypeDescriptor targetType) {
			return targetType.getType() == Boolean.class ? false : null;
		}
	};
	context.setTypeConverter(new StandardTypeConverter(conversionService));

	evaluate("null or true", Boolean.TRUE, Boolean.class, false);
	evaluate("null and true", Boolean.FALSE, Boolean.class, false);
	evaluate("!null", Boolean.TRUE, Boolean.class, false);
	evaluate("null ? 'foo' : 'bar'", "bar", String.class, false);
}
 
Example 6
Source File: QuerydslUtils.java    From gvnix with GNU General Public License v3.0 6 votes vote down vote up
/**
 * Obtains the descriptor of the filtered field
 * 
 * @param fieldName
 * @param entity
 * @return
 */
public static <T> TypeDescriptor getTypeDescriptor(String fieldName,
        PathBuilder<T> entity) {
    Class<?> entityType = entity.getType();
    if (entityType == Object.class) {
        // Remove from path the root "entity" alias
        String fromRootPath = entity.toString().replaceFirst("^[^.]+[.]",
                "");
        TypeDescriptor fromRoot = getTypeDescriptor(fromRootPath, entity
                .getRoot().getType());
        if (fromRoot == null) {
            return null;
        }
        entityType = fromRoot.getType();
    }
    return getTypeDescriptor(fieldName, entityType);
}
 
Example 7
Source File: BooleanExpressionTests.java    From spring-analysis-note with MIT License 6 votes vote down vote up
@Test
public void testConvertAndHandleNull() { // SPR-9445
	// without null conversion
	evaluateAndCheckError("null or true", SpelMessage.TYPE_CONVERSION_ERROR, 0, "null", "boolean");
	evaluateAndCheckError("null and true", SpelMessage.TYPE_CONVERSION_ERROR, 0, "null", "boolean");
	evaluateAndCheckError("!null", SpelMessage.TYPE_CONVERSION_ERROR, 1, "null", "boolean");
	evaluateAndCheckError("null ? 'foo' : 'bar'", SpelMessage.TYPE_CONVERSION_ERROR, 0, "null", "boolean");

	// with null conversion (null -> false)
	GenericConversionService conversionService = new GenericConversionService() {
		@Override
		protected Object convertNullSource(TypeDescriptor sourceType, TypeDescriptor targetType) {
			return targetType.getType() == Boolean.class ? false : null;
		}
	};
	context.setTypeConverter(new StandardTypeConverter(conversionService));

	evaluate("null or true", Boolean.TRUE, Boolean.class, false);
	evaluate("null and true", Boolean.FALSE, Boolean.class, false);
	evaluate("!null", Boolean.TRUE, Boolean.class, false);
	evaluate("null ? 'foo' : 'bar'", "bar", String.class, false);
}
 
Example 8
Source File: BooleanExpressionTests.java    From spring4-understanding with Apache License 2.0 6 votes vote down vote up
@Test
public void testConvertAndHandleNull() { // SPR-9445
	// without null conversion
	evaluateAndCheckError("null or true", SpelMessage.TYPE_CONVERSION_ERROR, 0, "null", "boolean");
	evaluateAndCheckError("null and true", SpelMessage.TYPE_CONVERSION_ERROR, 0, "null", "boolean");
	evaluateAndCheckError("!null", SpelMessage.TYPE_CONVERSION_ERROR, 1, "null", "boolean");
	evaluateAndCheckError("null ? 'foo' : 'bar'", SpelMessage.TYPE_CONVERSION_ERROR, 0, "null", "boolean");

	// with null conversion (null -> false)
	GenericConversionService conversionService = new GenericConversionService() {
		@Override
		protected Object convertNullSource(TypeDescriptor sourceType, TypeDescriptor targetType) {
			return targetType.getType() == Boolean.class ? false : null;
		}
	};
	eContext.setTypeConverter(new StandardTypeConverter(conversionService));

	evaluate("null or true", Boolean.TRUE, Boolean.class, false);
	evaluate("null and true", Boolean.FALSE, Boolean.class, false);
	evaluate("!null", Boolean.TRUE, Boolean.class, false);
	evaluate("null ? 'foo' : 'bar'", "bar", String.class, false);
}
 
Example 9
Source File: BeanFactoryTypeConverter.java    From spring-analysis-note with MIT License 5 votes vote down vote up
@Override
public Object convertValue(Object value, TypeDescriptor sourceType, TypeDescriptor targetType) {
	if (targetType.getType() == Void.class || targetType.getType() == Void.TYPE) {
		return null;
	}
	if (conversionService.canConvert(sourceType, targetType)) {
		return conversionService.convert(value, sourceType, targetType);
	}
	if (!String.class.isAssignableFrom(sourceType.getType())) {
		PropertyEditor editor = delegate.findCustomEditor(sourceType.getType(), null);
		editor.setValue(value);
		return editor.getAsText();
	}
	return delegate.convertIfNecessary(value, targetType.getType());
}
 
Example 10
Source File: ReflectionHelper.java    From spring4-understanding with Apache License 2.0 5 votes vote down vote up
/**
 * Based on {@link MethodInvoker#getTypeDifferenceWeight(Class[], Object[])} but operates on TypeDescriptors.
 */
public static int getTypeDifferenceWeight(List<TypeDescriptor> paramTypes, List<TypeDescriptor> argTypes) {
	int result = 0;
	for (int i = 0; i < paramTypes.size(); i++) {
		TypeDescriptor paramType = paramTypes.get(i);
		TypeDescriptor argType = (i < argTypes.size() ? argTypes.get(i) : null);
		if (argType == null) {
			if (paramType.isPrimitive()) {
				return Integer.MAX_VALUE;
			}
		}
		else {
			Class<?> paramTypeClazz = paramType.getType();
			if (!ClassUtils.isAssignable(paramTypeClazz, argType.getType())) {
				return Integer.MAX_VALUE;
			}
			if (paramTypeClazz.isPrimitive()) {
				paramTypeClazz = Object.class;
			}
			Class<?> superClass = argType.getType().getSuperclass();
			while (superClass != null) {
				if (paramTypeClazz.equals(superClass)) {
					result = result + 2;
					superClass = null;
				}
				else if (ClassUtils.isAssignable(paramTypeClazz, superClass)) {
					result = result + 2;
					superClass = superClass.getSuperclass();
				}
				else {
					superClass = null;
				}
			}
			if (paramTypeClazz.isInterface()) {
				result = result + 1;
			}
		}
	}
	return result;
}
 
Example 11
Source File: SpelExpression.java    From java-technology-stack with MIT License 5 votes vote down vote up
@Override
@Nullable
public Class<?> getValueType(EvaluationContext context) throws EvaluationException {
	Assert.notNull(context, "EvaluationContext is required");
	ExpressionState expressionState = new ExpressionState(context, this.configuration);
	TypeDescriptor typeDescriptor = this.ast.getValueInternal(expressionState).getTypeDescriptor();
	return (typeDescriptor != null ? typeDescriptor.getType() : null);
}
 
Example 12
Source File: ReflectionHelper.java    From java-technology-stack with MIT License 5 votes vote down vote up
/**
 * Based on {@link MethodInvoker#getTypeDifferenceWeight(Class[], Object[])} but operates on TypeDescriptors.
 */
public static int getTypeDifferenceWeight(List<TypeDescriptor> paramTypes, List<TypeDescriptor> argTypes) {
	int result = 0;
	for (int i = 0; i < paramTypes.size(); i++) {
		TypeDescriptor paramType = paramTypes.get(i);
		TypeDescriptor argType = (i < argTypes.size() ? argTypes.get(i) : null);
		if (argType == null) {
			if (paramType.isPrimitive()) {
				return Integer.MAX_VALUE;
			}
		}
		else {
			Class<?> paramTypeClazz = paramType.getType();
			if (!ClassUtils.isAssignable(paramTypeClazz, argType.getType())) {
				return Integer.MAX_VALUE;
			}
			if (paramTypeClazz.isPrimitive()) {
				paramTypeClazz = Object.class;
			}
			Class<?> superClass = argType.getType().getSuperclass();
			while (superClass != null) {
				if (paramTypeClazz.equals(superClass)) {
					result = result + 2;
					superClass = null;
				}
				else if (ClassUtils.isAssignable(paramTypeClazz, superClass)) {
					result = result + 2;
					superClass = superClass.getSuperclass();
				}
				else {
					superClass = null;
				}
			}
			if (paramTypeClazz.isInterface()) {
				result = result + 1;
			}
		}
	}
	return result;
}
 
Example 13
Source File: SpelExpression.java    From spring-analysis-note with MIT License 5 votes vote down vote up
@Override
@Nullable
public Class<?> getValueType(EvaluationContext context, Object rootObject) throws EvaluationException {
	ExpressionState expressionState = new ExpressionState(context, toTypedValue(rootObject), this.configuration);
	TypeDescriptor typeDescriptor = this.ast.getValueInternal(expressionState).getTypeDescriptor();
	return (typeDescriptor != null ? typeDescriptor.getType() : null);
}
 
Example 14
Source File: BeanFactoryTypeConverter.java    From java-technology-stack with MIT License 5 votes vote down vote up
@Override
public Object convertValue(Object value, TypeDescriptor sourceType, TypeDescriptor targetType) {
	if (targetType.getType() == Void.class || targetType.getType() == Void.TYPE) {
		return null;
	}
	if (conversionService.canConvert(sourceType, targetType)) {
		return conversionService.convert(value, sourceType, targetType);
	}
	if (!String.class.isAssignableFrom(sourceType.getType())) {
		PropertyEditor editor = delegate.findCustomEditor(sourceType.getType(), null);
		editor.setValue(value);
		return editor.getAsText();
	}
	return delegate.convertIfNecessary(value, targetType.getType());
}
 
Example 15
Source File: AbstractNestablePropertyAccessor.java    From lams with GNU General Public License v2.0 5 votes vote down vote up
private PropertyValue createDefaultPropertyValue(PropertyTokenHolder tokens) {
	TypeDescriptor desc = getPropertyTypeDescriptor(tokens.canonicalName);
	Class<?> type = desc.getType();
	if (type == null) {
		throw new NullValueInNestedPathException(getRootClass(), this.nestedPath + tokens.canonicalName,
				"Could not determine property type for auto-growing a default value");
	}
	Object defaultValue = newValue(type, desc, tokens.canonicalName);
	return new PropertyValue(tokens.canonicalName, defaultValue);
}
 
Example 16
Source File: SpelExpression.java    From lams with GNU General Public License v2.0 5 votes vote down vote up
@Override
public Class<?> getValueType(EvaluationContext context) throws EvaluationException {
	Assert.notNull(context, "EvaluationContext is required");
	ExpressionState expressionState = new ExpressionState(context, this.configuration);
	TypeDescriptor typeDescriptor = this.ast.getValueInternal(expressionState).getTypeDescriptor();
	return (typeDescriptor != null ? typeDescriptor.getType() : null);
}
 
Example 17
Source File: AbstractNestablePropertyAccessor.java    From spring4-understanding with Apache License 2.0 5 votes vote down vote up
private PropertyValue createDefaultPropertyValue(PropertyTokenHolder tokens) {
	TypeDescriptor desc = getPropertyTypeDescriptor(tokens.canonicalName);
	Class<?> type = desc.getType();
	if (type == null) {
		throw new NullValueInNestedPathException(getRootClass(), this.nestedPath + tokens.canonicalName,
				"Could not determine property type for auto-growing a default value");
	}
	Object defaultValue = newValue(type, desc, tokens.canonicalName);
	return new PropertyValue(tokens.canonicalName, defaultValue);
}
 
Example 18
Source File: ObjectToObjectConverter.java    From lams with GNU General Public License v2.0 4 votes vote down vote up
@Override
public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) {
	return (sourceType.getType() != targetType.getType() &&
			hasConversionMethodOrConstructor(targetType.getType(), sourceType.getType()));
}
 
Example 19
Source File: QuerydslUtilsBeanImpl.java    From gvnix with GNU General Public License v3.0 4 votes vote down vote up
/**
 * {@inheritDoc}
 */
@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
public <T> Predicate createFilterExpression(PathBuilder<T> entityPath,
        String fieldName, String searchStr) {
    TypeDescriptor descriptor = getTypeDescriptor(fieldName, entityPath);
    if (descriptor == null) {
        throw new IllegalArgumentException(String.format(
                "Can't found field '%s' on entity '%s'", fieldName,
                entityPath.getType()));
    }
    Class<?> fieldType = descriptor.getType();

    // Check for field type in order to delegate in custom-by-type
    // create expression method
    if (String.class == fieldType) {
        return createStringExpressionWithOperators(entityPath, fieldName,
                searchStr);
    }
    else if (Boolean.class == fieldType || boolean.class == fieldType) {
        return createBooleanExpressionWithOperators(entityPath, fieldName,
                searchStr);
    }
    else if (Number.class.isAssignableFrom(fieldType)
            || NUMBER_PRIMITIVES.contains(fieldType)) {
        return createNumberExpressionGenericsWithOperators(entityPath,
                fieldName, descriptor, searchStr);
    }
    else if (Date.class.isAssignableFrom(fieldType)
            || Calendar.class.isAssignableFrom(fieldType)) {
        String datePattern = "dd/MM/yyyy";
        if (messageSource != null) {
            datePattern = messageSource.getMessage(
                    "global.filters.operations.date.pattern", null,
                    LocaleContextHolder.getLocale());
        }
        BooleanExpression expression = createDateExpressionWithOperators(
                entityPath, fieldName, (Class<Date>) fieldType, searchStr,
                datePattern);
        return expression;
    }

    else if (fieldType.isEnum()) {
        return createEnumExpression(entityPath, fieldName, searchStr,
                (Class<? extends Enum>) fieldType);
    }
    return null;
}
 
Example 20
Source File: QuerydslUtilsBeanImpl.java    From gvnix with GNU General Public License v3.0 4 votes vote down vote up
/**
 * {@inheritDoc}
 */
@Override
public <T> Class<?> getFieldType(String fieldName, PathBuilder<T> entity) {
    TypeDescriptor descriptor = getTypeDescriptor(fieldName, entity);
    return descriptor.getType();
}