Examples with Example org.springframework.data.domain.Example used on opensource projects

Example 1 with Example

use of org.springframework.data.domain.Example in project spring-data-jdbc by spring-projects.

the class RelationalExampleMapper method getMappedExample.

/**
 * Transform each property of the {@link Example}'s probe into a {@link Criteria} and assemble them into a
 * {@link Query}.
 *
 * @param example
 * @param entity
 * @return query
 */
private <T> Query getMappedExample(Example<T> example, RelationalPersistentEntity<?> entity) {
    Assert.notNull(example, "Example must not be null!");
    Assert.notNull(entity, "RelationalPersistentEntity must not be null!");
    PersistentPropertyAccessor<T> propertyAccessor = entity.getPropertyAccessor(example.getProbe());
    ExampleMatcherAccessor matcherAccessor = new ExampleMatcherAccessor(example.getMatcher());
    final List<Criteria> criteriaBasedOnProperties = new ArrayList<>();
    entity.doWithProperties((PropertyHandler<RelationalPersistentProperty>) property -> {
        if (matcherAccessor.isIgnoredPath(property.getName())) {
            return;
        }
        Optional<?> optionalConvertedPropValue = matcherAccessor.getValueTransformerForPath(property.getName()).apply(Optional.ofNullable(propertyAccessor.getProperty(property)));
        if (!optionalConvertedPropValue.isPresent()) {
            return;
        }
        Object convPropValue = optionalConvertedPropValue.get();
        boolean ignoreCase = matcherAccessor.isIgnoreCaseForPath(property.getName());
        String column = property.getName();
        switch(matcherAccessor.getStringMatcherForPath(property.getName())) {
            case DEFAULT:
            case EXACT:
                criteriaBasedOnProperties.add(includeNulls(example) ? Criteria.where(column).isNull().or(column).is(convPropValue).ignoreCase(ignoreCase) : Criteria.where(column).is(convPropValue).ignoreCase(ignoreCase));
                break;
            case ENDING:
                criteriaBasedOnProperties.add(includeNulls(example) ? Criteria.where(column).isNull().or(column).like("%" + convPropValue).ignoreCase(ignoreCase) : Criteria.where(column).like("%" + convPropValue).ignoreCase(ignoreCase));
                break;
            case STARTING:
                criteriaBasedOnProperties.add(includeNulls(example) ? Criteria.where(column).isNull().or(column).like(convPropValue + "%").ignoreCase(ignoreCase) : Criteria.where(column).like(convPropValue + "%").ignoreCase(ignoreCase));
                break;
            case CONTAINING:
                criteriaBasedOnProperties.add(includeNulls(example) ? Criteria.where(column).isNull().or(column).like("%" + convPropValue + "%").ignoreCase(ignoreCase) : Criteria.where(column).like("%" + convPropValue + "%").ignoreCase(ignoreCase));
                break;
            default:
                throw new IllegalStateException(example.getMatcher().getDefaultStringMatcher() + " is not supported!");
        }
    });
    // Criteria, assemble!
    Criteria criteria = Criteria.empty();
    for (Criteria propertyCriteria : criteriaBasedOnProperties) {
        if (example.getMatcher().isAllMatching()) {
            criteria = criteria.and(propertyCriteria);
        } else {
            criteria = criteria.or(propertyCriteria);
        }
    }
    return Query.query(criteria);
}

Example 2 with Example

use of org.springframework.data.domain.Example in project spring-data-mongodb by spring-projects.

the class SimpleReactiveMongoRepository method findOne.

// -------------------------------------------------------------------------
// Methods from ReactiveMongoRepository
// -------------------------------------------------------------------------
/*
	 * (non-Javadoc)
	 * @see org.springframework.data.repository.query.ReactiveQueryByExampleExecutor#findOne(org.springframework.data.domain.Example)
	 */
@Override
public <S extends T> Mono<S> findOne(Example<S> example) {
    Assert.notNull(example, "Sample must not be null!");
    Query query = // 
    new Query(new Criteria().alike(example)).collation(// 
    entityInformation.getCollation()).limit(2);
    return mongoOperations.find(query, example.getProbeType(), entityInformation.getCollectionName()).buffer(2).map(vals -> {
        if (vals.size() > 1) {
            throw new IncorrectResultSizeDataAccessException(1);
        }
        return vals.iterator().next();
    }).next();
}

Example 3 with Example

use of org.springframework.data.domain.Example in project spring-data-jdbc by spring-projects.

the class RelationalExampleMapperTests method queryByExampleSupportsPropertyTransforms.

// GH-929
@Test
void queryByExampleSupportsPropertyTransforms() {
    Person person = new Person();
    person.setFirstname("Frodo");
    person.setLastname("Baggins");
    person.setSecret("I have the ring!");
    ExampleMatcher matcher = // 
    matching().withTransformer("firstname", o -> {
        if (o.isPresent()) {
            return o.map(o1 -> ((String) o1).toUpperCase());
        }
        return o;
    }).withTransformer("lastname", o -> {
        if (o.isPresent()) {
            return o.map(o1 -> ((String) o1).toLowerCase());
        }
        return o;
    });
    Example<Person> example = Example.of(person, matcher);
    Query query = exampleMapper.getMappedExample(example);
    // 
    assertThat(query.getCriteria().map(Object::toString).get()).contains(// 
    "(firstname = 'FRODO')", // 
    " AND ", // 
    "(lastname = 'baggins')", "(secret = 'I have the ring!')");
}