/**
 * Write the FilterBuilder for a Not filter
 * 
 * @param filter the filter to visit
 * @param extraData extra data (unused by this method)
 * 
 */
public Object visit(Not filter, Object extraData) {
    if(filter.getFilter() instanceof PropertyIsNull) {
        Expression expr = ((PropertyIsNull) filter.getFilter()).getExpression();
        expr.accept(this, extraData);
    } else {
        filter.getFilter().accept(this, extraData);
    }

    if(filter.getFilter() instanceof PropertyIsNull) {
        queryBuilder = ImmutableMap.of("exists", ImmutableMap.of("field", field));
    } else {
        queryBuilder = ImmutableMap.of("bool", ImmutableMap.of("must_not", queryBuilder));
    }
    return extraData;
}
 

public ElasticCapabilities() {
    super(new ElasticFilterCapabilities());

    addAll(LOGICAL_OPENGIS);
    addAll(SIMPLE_COMPARISONS_OPENGIS);
    addType(PropertyIsNull.class);
    addType(PropertyIsBetween.class);
    addType(Id.class);
    addType(IncludeFilter.class);
    addType(ExcludeFilter.class);
    addType(PropertyIsLike.class);

    // spatial filters
    addType(BBOX.class);
    addType(Contains.class);
    //addType(Crosses.class);
    addType(Disjoint.class);
    //addType(Equals.class);
    addType(Intersects.class);
    //addType(Overlaps.class);
    //addType(Touches.class);
    addType(Within.class);
    addType(DWithin.class);
    addType(Beyond.class);

    //temporal filters
    addType(After.class);
    addType(Before.class);
    addType(Begins.class);
    addType(BegunBy.class);
    addType(During.class);
    addType(Ends.class);
    addType(EndedBy.class);
    addType(TContains.class);
    addType(TEquals.class);
}
 

@Test
public void testPropertyIsNull() {
    PropertyIsNull filter = ff.isNull(ff.property("prop"));
    Map<String,Object> expected = ImmutableMap.of("bool", ImmutableMap.of("must_not",
            ImmutableMap.of("exists", ImmutableMap.of("field", "prop"))));

    builder.visit(filter, null);
    assertTrue(builder.createCapabilities().fullySupports(filter));
    assertEquals(expected, builder.getQueryBuilder());
}
 

@Test
public void testGetFeaturesWithIsNullFilter() throws Exception {
    init();
    FilterFactory ff = dataStore.getFilterFactory();
    PropertyIsNull f = ff.isNull(ff.property("security_ss"));
    SimpleFeatureCollection features = featureSource.getFeatures(f);
    assertEquals(1, features.size());
}
 

@Override
public Object visit(final PropertyIsNull filter, final Object extraData) {
  if (!usesProperty(filter)) {
    return Filter.INCLUDE;
  }
  return super.visit(filter, extraData);
}
 

@Override
public Object visit(final PropertyIsNull filter, final Object extraData) {
  if (!usesProperty(filter)) {
    return Filter.INCLUDE;
  }
  return super.visit(filter, extraData);
}
 

/** {@inheritDoc} */
@Override
public Object visit(PropertyIsNull filter, Object userData) {
	String propertyName = getPropertyName(filter.getExpression());
	String finalName = parsePropertyName(propertyName, userData);
	return Restrictions.isNull(finalName);
}
 

/**
 * Sets the filter.
 *
 * @param filter the new expression
 * @param filterConfig the filter config
 */
public void setFilter(Filter filter, FilterConfigInterface filterConfig) {
    this.filter = filter;
    this.filterConfig = filterConfig;

    setDisplayString();

    this.removeAllChildren();

    TypeManager.getInstance().reset();

    if (filterConfig != null) {
        FilterName filterName = filterConfig.getFilterConfiguration();

        if (filter instanceof Not) {
            setNotFilter(filter, filterName);
        } else if (filter instanceof LogicFilterImpl) {
            setLogicFilter(filter, filterName);
        } else if (filter instanceof BinaryTemporalOperator) {
            setExpressionParameter(
                    ((BinaryTemporalOperator) filter).getExpression1(),
                    filterName.getParameter(0));
            setExpressionParameter(
                    ((BinaryTemporalOperator) filter).getExpression2(),
                    filterName.getParameter(1));
        } else if (filter instanceof PropertyIsNull) {
            setExpressionParameter(
                    ((PropertyIsNull) filter).getExpression(), filterName.getParameter(0));
        } else if (filter instanceof PropertyIsBetween) {
            setExpressionParameter(
                    ((PropertyIsBetween) filter).getLowerBoundary(),
                    filterName.getParameter(0));
            setExpressionParameter(
                    ((PropertyIsBetween) filter).getExpression(), filterName.getParameter(1));
            setExpressionParameter(
                    ((PropertyIsBetween) filter).getUpperBoundary(),
                    filterName.getParameter(2));
        } else if (filter instanceof PropertyIsLike) {
            setExpressionParameter(
                    ((PropertyIsLike) filter).getExpression(), filterName.getParameter(0));
            setExpressionParameter(
                    ff.literal(((PropertyIsLike) filter).getLiteral()),
                    filterName.getParameter(1));
            setExpressionStringSizeParameter(
                    ff.literal(((PropertyIsLike) filter).getWildCard()),
                    filterName.getParameter(2),
                    1,
                    true);
            setExpressionStringSizeParameter(
                    ff.literal(((PropertyIsLike) filter).getSingleChar()),
                    filterName.getParameter(3),
                    1,
                    true);
            setExpressionStringSizeParameter(
                    ff.literal(((PropertyIsLike) filter).getEscape()),
                    filterName.getParameter(4),
                    1,
                    true);
            setExpressionParameter(
                    ff.literal(((PropertyIsLike) filter).isMatchingCase()),
                    filterName.getParameter(5));
        } else if (filter instanceof BinarySpatialOperator) {
            setBinarySpatialOperator(filter, filterName);
        } else if (filter instanceof BinaryComparisonAbstract) {
            setBinaryComparisonAbstract(filter, filterName);
        } else if (filter instanceof FidFilterImpl) {
            FidFilterImpl fidFilter = (FidFilterImpl) filter;

            for (Identifier identifier : fidFilter.getIdentifiers()) {
                setExpressionParameter(ff.literal(identifier), filterName.getParameter(0));
            }
        }
    }
}
 

/**
 * Adds the filter.
 *
 * @param node the node
 * @return the filter
 */
private Filter addFilter(FilterNode node) {
    Filter nodeFilter = node.getFilter();

    FilterConfigInterface filterConfig = node.getFilterConfig();

    if (nodeFilter instanceof LogicFilterImpl) {
        List<Filter> filterList = new ArrayList<>();

        createFilterList(node, filterList);

        return filterConfig.createLogicFilter(filterList);
    }

    List<Expression> parameterFilter = new ArrayList<>();

    if (originalFilter instanceof FidFilterImpl) {
        createExpressionParameterList(node, 1, parameterFilter);
    } else if (originalFilter instanceof BinaryTemporalOperator) {
        createExpressionParameterList(node, 2, parameterFilter);
    } else if (originalFilter instanceof PropertyIsBetween) {
        createExpressionParameterList(node, 3, parameterFilter);
    } else if (originalFilter instanceof PropertyIsNull) {
        createExpressionParameterList(node, 1, parameterFilter);
    } else if (originalFilter instanceof PropertyIsLike) {
        createExpressionParameterList(node, 6, parameterFilter);
    } else if (originalFilter instanceof BinarySpatialOperator) {
        createExpressionParameterList(node, 2, parameterFilter);
    } else if (originalFilter instanceof BinaryComparisonAbstract) {
        if (originalFilter instanceof Not) {
            createExpressionParameterList(node, 1, parameterFilter);
        } else if (originalFilter instanceof PropertyIsGreaterThan) {
            createExpressionParameterList(node, 2, parameterFilter);
        } else {
            createExpressionParameterList(node, 3, parameterFilter);
        }
    } else {
        return nodeFilter;
    }

    return filterConfig.createFilter(parameterFilter);
}
 

@Override
public Object visit(final PropertyIsNull filter, final Object data) {
  return new ExtractGeometryFilterVisitorResult(infinity(), null);
}
 

@Override
public Object visit(final PropertyIsNull filter, final Object data) {
  return new TemporalConstraints();
}
 

/**
 * Writes the FilterBuilder for the Null Filter.
 *
 * @param filter the null filter.
 *
 */
public Object visit(PropertyIsNull filter, Object extraData) {
    LOGGER.finest("exporting NullFilter");

    Expression expr = filter.getExpression();

    expr.accept(this, extraData);

    queryBuilder = ImmutableMap.of("bool",
            ImmutableMap.of("must_not", ImmutableMap.of("exists", ImmutableMap.of("field", field))));

    return extraData;
}