Examples of org.springframework.core.convert.ConversionService.canConvert()

Package org.springframework.core.convert

Class org.springframework.core.convert.ConversionService

Examples of org.springframework.core.convert.ConversionService.canConvert()

org.springframework.core.convert.ConversionService.canConvert()
Returns true if objects of sourceType can be converted to targetType. If this method returns true, it means {@link #convert(Object,Class)} is capable of converting an instance of sourceType to targetType.Special note on collections, arrays, and maps types: For conversion between collection, array, and map types, this method will return 'true' even though a convert invocation may still generate a {@link ConversionException} if the underlying elements are not convertible.Callers are expected to handle this exceptional case when working with collections and maps. @param sourceType the source type to convert from (may be null if source is null) @param targetType the target type to convert to (required) @return true if a conversion can be performed, false if not @throws IllegalArgumentException if targetType is null

            value = getWidgetPrefValue(parameter, webRequest);
        }
        //
        if (value != null) {
            ConversionService conversionService = (ConversionService) webRequest.getAttribute(ConversionService.class.getName(), WebRequest.SCOPE_REQUEST);
            if (conversionService.canConvert(value.getClass(), parameter.getParameterType())) {
                value = conversionService.convert(value, parameter.getParameterType());
            } else {
                throw new ConverterNotFoundException(TypeDescriptor.forObject(value), TypeDescriptor.valueOf(parameter.getParameterType()));
            }
        }

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    }


    // Use the conversion service
    ConversionService conversionService = this.dataBinder.getConversionService();
    if (conversionService != null) {
      if (conversionService.canConvert(TypeDescriptor.valueOf(String.class), typeDescriptor)) {
        return new ConvertingPropertyEditorAdapter(conversionService, typeDescriptor);
      }
    }


    // Fall back to default editors

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            boolean found = true;
            int p = 0;
            Object[] args = new Object[parameterTypes.length];
            while (found && p < parameterTypes.length) {
              Class<?> parameterType = parameterTypes[p];
              boolean canConvert = conversionService.canConvert(String.class, parameterType);
              if (canConvert) {
                args[p] = conversionService.convert(data.getArguments().get(p), parameterType);
              }
              found &= canConvert;
              p++;

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    DataBinder binder = binderFactory.createBinder(request, null, attributeName);
    ConversionService conversionService = binder.getConversionService();
    if (conversionService != null) {
      TypeDescriptor source = TypeDescriptor.valueOf(String.class);
      TypeDescriptor target = new TypeDescriptor(parameter);
      if (conversionService.canConvert(source, target)) {
        return binder.convertIfNecessary(sourceValue, parameter.getParameterType(), parameter);
      }
    }
    return null;
  }

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