Examples of com.google.appengine.api.datastore.Query.FilterPredicate

Package com.google.appengine.api.datastore.Query

Examples of com.google.appengine.api.datastore.Query.FilterPredicate

com.google.appengine.api.datastore.Query.FilterPredicate

  private DatastoreService ds;


  private static Query createQuery(String kind, String property, Object lowerBound,
      Object upperBound) {
    ImmutableList<Filter> f = ImmutableList.<Filter>builder()
        .add(new FilterPredicate(property, GREATER_THAN_OR_EQUAL, lowerBound))
        .add(new FilterPredicate(property, LESS_THAN, upperBound)).build();
    return BaseDatastoreInput.createQuery(null, kind).setFilter(new CompositeFilter(AND, f));
  }

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  }


  private MapReduceSpecification<Entity, String, Long, KeyValue<String, Long>,
      List<List<KeyValue<String, Long>>>> getCountJobSpec(int mapShardCount, int reduceShardCount) {
    Query query =
        new Query(datastoreType).setFilter(new FilterPredicate("foo", FilterOperator.EQUAL, "bar"));


    return new MapReduceSpecification.Builder<>(new DatastoreInput(query, mapShardCount),
        new CountMapper(), new CountReducer(), new InMemoryOutput<KeyValue<String, Long>>())
        .setKeyMarshaller(Marshallers.getStringMarshaller())
        .setValueMarshaller(Marshallers.getLongMarshaller())

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  private DatastoreService ds;


  private static Query createQuery(String namespace, String kind, String property,
      Object lowerBound, Object upperBound) {
    ImmutableList<Filter> f = ImmutableList.<Filter>builder()
        .add(new FilterPredicate(property, GREATER_THAN_OR_EQUAL, lowerBound))
        .add(new FilterPredicate(property, LESS_THAN, upperBound)).build();
    return BaseDatastoreInput.createQuery(namespace, kind).setFilter(new CompositeFilter(AND, f));
  }

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    Query q = new Query("_AE_Backup_Information");
    
    // for some reason the datastore admin code appends the date to the backup name even when creating programatically, 
    // so test for greater than or equal to and then take the first result
    FilterPredicate greater = new FilterPredicate("name", FilterOperator.GREATER_THAN_OR_EQUAL, backupName);
    FilterPredicate less = new FilterPredicate("name", FilterOperator.LESS_THAN_OR_EQUAL, backupName + "Z");
    List<Query.Filter> filters = new ArrayList<Query.Filter>();
    filters.add(greater);
    filters.add(less);
    CompositeFilter comp = new CompositeFilter(CompositeFilterOperator.AND, filters); 
    q.setFilter(comp);

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    }
  }


  private static Entity findDeviceByRegId(String regId) {
    Filter filter =
        new FilterPredicate(DEVICE_REG_ID_PROPERTY, FilterOperator.EQUAL, regId);
    Query query = new Query(DEVICE_TYPE).setFilter(filter);
    PreparedQuery preparedQuery = datastore.prepare(query);
    List<Entity> entities = preparedQuery.asList(DEFAULT_FETCH_OPTIONS);
    Entity entity = null;
    if (!entities.isEmpty()) {

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    taskQueue.enqueue(FanoutTask.decodeTasks(encodedBytes));
  }


  public List<Entity> queryAll(final String kind, final Key rootJobKey) {
    Query query = new Query(kind);
    query.setFilter(new FilterPredicate(ROOT_JOB_KEY_PROPERTY, EQUAL, rootJobKey));
    final PreparedQuery preparedQuery = dataStore.prepare(query);
    final FetchOptions options = FetchOptions.Builder.withChunkSize(500);
    return tryFiveTimes(new Operation<List<Entity>>("queryFullPipeline") {
      @Override
      public List<Entity> call() {

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  @Override
  public Pair<? extends Iterable<JobRecord>, String> queryRootPipelines(String classFilter,
      String cursor, final int limit) {
    Query query = new Query(JobRecord.DATA_STORE_KIND);
    Filter filter = classFilter == null || classFilter.isEmpty() ? new FilterPredicate(
        ROOT_JOB_DISPLAY_NAME, GREATER_THAN, null)
        : new FilterPredicate(ROOT_JOB_DISPLAY_NAME, EQUAL, classFilter);
    query.setFilter(filter);
    final PreparedQuery preparedQuery = dataStore.prepare(query);
    final FetchOptions fetchOptions = FetchOptions.Builder.withDefaults();
    if (limit > 0) {
      fetchOptions.limit(limit + 1);

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  private void deleteAll(final String kind, final Key rootJobKey) {
    logger.info("Deleting all " + kind + " with rootJobKey=" + rootJobKey);
    final int chunkSize = 100;
    final FetchOptions fetchOptions = FetchOptions.Builder.withChunkSize(chunkSize);
    final PreparedQuery preparedQuery = dataStore.prepare(new Query(kind).setKeysOnly().setFilter(
        new FilterPredicate(ROOT_JOB_KEY_PROPERTY, EQUAL, rootJobKey)));
    tryFiveTimes(new Operation<Void>("delete") {
      @Override
      public Void call() {
        Iterator<Entity> iter = preparedQuery.asIterator(fetchOptions);
        while (iter.hasNext()) {

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     */
    public Filter[] getFilters() {
        List<FilterPredicate> list = query.getFilterPredicates();
        Filter[] filters = new Filter[list.size()];
        for (int i = 0; i < list.size(); i++) {
            FilterPredicate f = list.get(i);
            filters[i] =
                new Filter(f.getPropertyName(), f.getOperator(), f.getValue());
        }
        return filters;
    }

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    // you can also use name to get key, then use the key to delete the
    // entity from datastore directly
    // because name is also the entity's key
    
    // query
    Filter filter = new FilterPredicate(Contact.FIELD_ID_ID,
        FilterOperator.EQUAL, id);


    Query query = new Query(Contact.CONTACT_ENTITY_ID);
    query.setFilter(filter);

View Full Code Here

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