Examples of speculoos.core.MapperDefaults

speculoos.core.MapperDefaults

An mapper that modifies a map by providing it default values.

This mapper modifies the input object to add fields with default values if they are not present. Instances of this validator are constructed from an instance of Map that stores default - string - values for keys.

The values of the original map from which this validator is constructed must be String instances. These values are transformed using {@link speculoos.utils.VariableString} which are then evaluated at run time using the input map as environment for substitution. This means that default values can be expressed as syntactic substitutions of actual values.

@author abailly


  public class DefaultsValidHandler implements TagHandler {


    public void startElement(String uri, String localName, String qName,
        Attributes attributes) throws SAXException {
      MapperDefaults v = new MapperDefaults();
      String name = attributes.getValue("id");
      /* retrieve reference to map */
      String inull = attributes.getValue("map");
      try {
        Map def = (Map) maps.get(inull);
        if (def == null)
          throw new SAXException("Reference to undeclared map "
              + inull + " in validator " + name);
        /* set defaults */
        v.setDefaults(def);
        v.setTypeHelper(typeHelper);
      } catch (ClassCastException e) {
        throw new SAXException("Reference to " + inull
            + " is not a map");
      }
      push(v);

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Examples of speculoos.core.MapperDefaults

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