Examples with DocumentSnapshot com.google.cloud.firestore.DocumentSnapshot used on opensource projects

Example 96 with DocumentSnapshot

use of com.google.cloud.firestore.DocumentSnapshot in project java-firestore by googleapis.

the class RetrieveDataSnippets method getQueryResults.

/**
 * Return multiple documents from a collection based on a query.
 *
 * @return list of documents of capital cities.
 */
public List<QueryDocumentSnapshot> getQueryResults() throws Exception {
    // [START fs_get_multiple_docs]
    // [START firestore_data_query]
    // asynchronously retrieve multiple documents
    ApiFuture<QuerySnapshot> future = db.collection("cities").whereEqualTo("capital", true).get();
    // future.get() blocks on response
    List<QueryDocumentSnapshot> documents = future.get().getDocuments();
    for (DocumentSnapshot document : documents) {
        System.out.println(document.getId() + " => " + document.toObject(City.class));
    }
    // [END fs_get_multiple_docs]
    return documents;
}

Example 97 with DocumentSnapshot

use of com.google.cloud.firestore.DocumentSnapshot in project java-firestore by googleapis.

the class RetrieveDataSnippets method getDocumentAsEntity.

/**
 * Retrieves document in collection as a custom object.
 *
 * @return document data as City object
 */
public City getDocumentAsEntity() throws Exception {
    // [START fs_get_doc_as_entity]
    // [START firestore_data_get_as_custom_type]
    DocumentReference docRef = db.collection("cities").document("BJ");
    // asynchronously retrieve the document
    ApiFuture<DocumentSnapshot> future = docRef.get();
    // block on response
    DocumentSnapshot document = future.get();
    City city = null;
    if (document.exists()) {
        // convert document to POJO
        city = document.toObject(City.class);
        System.out.println(city);
    } else {
        System.out.println("No such document!");
    }
    // [END fs_get_doc_as_entity]
    return city;
}

Example 98 with DocumentSnapshot

use of com.google.cloud.firestore.DocumentSnapshot in project java-firestore by googleapis.

the class RetrieveDataSnippetsIT method deleteAllDocuments.

private static void deleteAllDocuments() throws Exception {
    ApiFuture<QuerySnapshot> future = db.collection("cities").get();
    QuerySnapshot querySnapshot = future.get();
    for (DocumentSnapshot doc : querySnapshot.getDocuments()) {
        // block on delete operation
        db.collection("cities").document(doc.getId()).delete().get();
    }
}

Example 99 with DocumentSnapshot

use of com.google.cloud.firestore.DocumentSnapshot in project java-firestore by googleapis.

the class QuickstartIT method deleteAllDocuments.

private void deleteAllDocuments() throws Exception {
    ApiFuture<QuerySnapshot> future = db.collection("users").get();
    QuerySnapshot querySnapshot = future.get();
    for (DocumentSnapshot doc : querySnapshot.getDocuments()) {
        // block on delete operation
        db.document("users/" + doc.getId()).delete().get();
    }
}

Example 100 with DocumentSnapshot

use of com.google.cloud.firestore.DocumentSnapshot in project java-firestore by googleapis.

the class ManageDataSnippetsIT method testWriteBatchIsSuccessful.

@Test
public void testWriteBatchIsSuccessful() throws Exception {
    manageDataSnippets.writeBatch();
    CollectionReference collection = db.collection("cities");
    ApiFuture<DocumentSnapshot> document = collection.document("NYC").get();
    assertTrue(document.get().exists());
    DocumentReference documentReference = collection.document("SF");
    Map<String, Object> data = getDocumentDataAsMap(documentReference);
    assertTrue(data.containsKey("population"));
    document = collection.document("LA").get();
    assertFalse(document.get().exists());
}