Example usage for org.springframework.data.mongodb.core.query Criteria exists

Introduction

In this page you can find the example usage for org.springframework.data.mongodb.core.query Criteria exists.

Prototype

public Criteria exists(boolean b) 

Source Link

Document

Creates a criterion using the $exists operator.

Usage

From source file:org.springframework.data.mongodb.repository.query.MongoQueryCreator.java

/**
 * Populates the given {@link CriteriaDefinition} depending on the {@link Type} given.
 * //from  ww  w .jav  a  2 s.  c  om
 * @param type
 * @param criteria
 * @param parameters
 * @return
 */
private Criteria from(Type type, Criteria criteria, PotentiallyConvertingIterator parameters) {

    switch (type) {
    case GREATER_THAN:
        return criteria.gt(parameters.nextConverted());
    case GREATER_THAN_EQUAL:
        return criteria.gte(parameters.nextConverted());
    case LESS_THAN:
        return criteria.lt(parameters.nextConverted());
    case LESS_THAN_EQUAL:
        return criteria.lte(parameters.nextConverted());
    case BETWEEN:
        return criteria.gt(parameters.nextConverted()).lt(parameters.nextConverted());
    case IS_NOT_NULL:
        return criteria.ne(null);
    case IS_NULL:
        return criteria.is(null);
    case NOT_IN:
        return criteria.nin(nextAsArray(parameters));
    case IN:
        return criteria.in(nextAsArray(parameters));
    case LIKE:
        String value = parameters.next().toString();
        return criteria.regex(toLikeRegex(value));
    case REGEX:
        return criteria.regex(parameters.next().toString());
    case EXISTS:
        return criteria.exists((Boolean) parameters.next());
    case TRUE:
        return criteria.is(true);
    case FALSE:
        return criteria.is(false);
    case NEAR:

        Distance distance = accessor.getMaxDistance();
        Point point = accessor.getGeoNearLocation();
        point = point == null ? nextAs(parameters, Point.class) : point;

        if (distance == null) {
            return criteria.near(point);
        } else {
            if (distance.getMetric() != null) {
                criteria.nearSphere(point);
            } else {
                criteria.near(point);
            }
            criteria.maxDistance(distance.getNormalizedValue());
        }
        return criteria;

    case WITHIN:
        Object parameter = parameters.next();
        return criteria.within((Shape) parameter);
    case SIMPLE_PROPERTY:
        return criteria.is(parameters.nextConverted());
    case NEGATING_SIMPLE_PROPERTY:
        return criteria.not().is(parameters.nextConverted());
    }

    throw new IllegalArgumentException("Unsupported keyword!");
}

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