Java Document类代码示例

import com.google.appengine.api.search.Document; //导入依赖的package包/类
protected int removeAll() {
    int count = 0;
    Index index = getIndex();
    GetRequest request = GetRequest.newBuilder().setReturningIdsOnly(true).setLimit(200).build();
    GetResponse<Document> response = index.getRange(request);

    // can only deleteUnit documents in blocks of 200 so we need to iterate until they're all gone
    while (!response.getResults().isEmpty()) {
        List<String> ids = new ArrayList<>();
        for (Document document : response) {
            ids.add(document.getId());
        }
        index.delete(ids);
        count += ids.size();
        response = index.getRange(request);
    }
    return count;
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
protected Document buildDocument(K id, Map<String, Object> fields) {
    String stringId = convert(id, String.class);
    Builder documentBuilder = Document.newBuilder();
    documentBuilder.setId(stringId);
    for (Map.Entry<String, Object> fieldData : fields.entrySet()) {
        Object value = fieldData.getValue();
        String fieldName = fieldData.getKey();
        for (Object object : getCollectionValues(value)) {
            try {
                Field field = buildField(metadata, fieldName, object);
                documentBuilder.addField(field);
            } catch (Exception e) {
                throw new SearchException(e, "Failed to add field '%s' with value '%s' to document with id '%s': %s", fieldName, value.toString(), id, e.getMessage());
            }
        }
    }

    return documentBuilder.build();
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
@Nonnull
@Override
public <E> Runnable indexAsync(Map<String, E> entities) {
    if (entities.isEmpty()) {
        return doNothing();
    }

    Class<?> entityClass = entities.values().toArray()[0].getClass();
    if (!searchMetadata.hasIndexedFields(entityClass)) {
        return doNothing();
    }

    List<Document> documents = entities.entrySet().stream()
            .map(entry -> documentBuilder.apply(entry.getKey(), entry.getValue()))
            .collect(Collectors.toList());

    Index index = getIndex(entityClass);
    return new IndexOperation(
            index.putAsync(documents)
    );
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
@Override
public <E> int clear(Class<E> entityClass) {
    Index index = getIndex(entityClass);

    GetRequest request = GetRequest.newBuilder()
            .setReturningIdsOnly(true)
            .setLimit(200) //Delete only allows 200 records at a time.
            .build();

    int count = 0;
    for (List<Document> documents = getDocumentIds(index, request); !documents.isEmpty(); documents = getDocumentIds(index, request)) {
        count += documents.size();
        unindex(entityClass, documents.stream().map(Document::getId));
    }
    return count;
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
/**
 * index gallery app into search index
 * @param app galleryapp
 */
public void indexApp (GalleryApp app) {
  // take the title, description, and the user name and index it
  // need to build up a string with all meta data
  String indexWords = app.getTitle()+" "+app.getDescription() + " " + app.getDeveloperName();
  // now create the doc
  Document doc = Document.newBuilder()
    .setId(String.valueOf(app.getGalleryAppId()))
    .addField(Field.newBuilder().setName("content").setText(indexWords))
    .build();

  Index index = getIndex();

  try {
    index.put(doc);
  } catch (PutException e) {
    if (StatusCode.TRANSIENT_ERROR.equals(e.getOperationResult().getCode())) {
        // retry putting the document
    }
  }
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
/**
 * Builds a new Place document to insert in the Places index.
 * @param placeId      the identifier of the place in the database.
 * @param placeName    the name of the place.
 * @param placeAddress the address of the place.
 * @param location     the GPS location of the place, as a GeoPt.
 * @return the Place document created.
 */
public static Document buildDocument(
        final Long placeId, final String placeName,
        final String placeAddress, final GeoPt location) {
    GeoPoint geoPoint = new GeoPoint(location.getLatitude(),
            location.getLongitude());

    Document.Builder builder = Document.newBuilder()
            .addField(Field.newBuilder().setName("id")
                    .setText(placeId.toString()))
            .addField(Field.newBuilder().setName("name").setText(placeName))
            .addField(Field.newBuilder().setName("address")
                    .setText(placeAddress))
            .addField(Field.newBuilder().setName("place_location")
                    .setGeoPoint(geoPoint));

    // geo-location doesn't work under dev_server, so let's add another
    // field to use for retrieving documents
    if (environment.value() == Development) {
        builder.addField(Field.newBuilder().setName("value").setNumber(1));
    }

    return builder.build();
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
/**
 * Cleans the index of places from all entries.
 */
private void removeAllDocumentsFromIndex() {
    Index index = PlacesHelper.getIndex();
    // As the request will only return up to 1000 documents,
    // we need to loop until there are no more documents in the index.
    // We batch delete 1000 documents per iteration.
    final int numberOfDocuments = 1000;
    while (true) {
        GetRequest request = GetRequest.newBuilder()
                .setReturningIdsOnly(true)
                .build();

        ArrayList<String> documentIds = new ArrayList<>(numberOfDocuments);
        GetResponse<Document> response = index.getRange(request);
        for (Document document : response.getResults()) {
            documentIds.add(document.getId());
        }

        if (documentIds.size() == 0) {
            break;
        }

        index.delete(documentIds);
    }
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
  PrintWriter out = resp.getWriter();
  Document document = Document.newBuilder()
      .setId("AZ125")
      .addField(Field.newBuilder().setName("myField").setText("myValue")).build();
  try {
    Utils.indexADocument(INDEX, document);
  } catch (InterruptedException e) {
    out.println("Interrupted");
    return;
  }
  out.println("Indexed a new document.");
  // [START get_document]
  IndexSpec indexSpec = IndexSpec.newBuilder().setName(INDEX).build();
  Index index = SearchServiceFactory.getSearchService().getIndex(indexSpec);

  // Fetch a single document by its  doc_id
  Document doc = index.get("AZ125");

  // Fetch a range of documents by their doc_ids
  GetResponse<Document> docs = index.getRange(
      GetRequest.newBuilder().setStartId("AZ125").setLimit(100).build());
  // [END get_document]
  out.println("myField: " + docs.getResults().get(0).getOnlyField("myField").getText());
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
/**
 * Code snippet for creating a Document.
 * @return Document Created document.
 */
public Document createDocument() {
  // [START create_document]
  User currentUser = UserServiceFactory.getUserService().getCurrentUser();
  String userEmail = currentUser == null ? "" : currentUser.getEmail();
  String userDomain = currentUser == null ? "" : currentUser.getAuthDomain();
  String myDocId = "PA6-5000";
  Document doc = Document.newBuilder()
      // Setting the document identifer is optional.
      // If omitted, the search service will create an identifier.
      .setId(myDocId)
      .addField(Field.newBuilder().setName("content").setText("the rain in spain"))
      .addField(Field.newBuilder().setName("email").setText(userEmail))
      .addField(Field.newBuilder().setName("domain").setAtom(userDomain))
      .addField(Field.newBuilder().setName("published").setDate(new Date()))
      .build();
  // [END create_document]
  return doc;
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp)
    throws IOException {
  PrintWriter out = resp.getWriter();
  Document document = Document.newBuilder()
      .addField(Field.newBuilder().setName("coverLetter").setText("CoverLetter"))
      .addField(Field.newBuilder().setName("resume").setHTML("<html></html>"))
      .addField(Field.newBuilder().setName("fullName").setAtom("Foo Bar"))
      .addField(Field.newBuilder().setName("submissionDate").setDate(new Date()))
      .build();
  // [START access_document]
  String coverLetter = document.getOnlyField("coverLetter").getText();
  String resume = document.getOnlyField("resume").getHTML();
  String fullName = document.getOnlyField("fullName").getAtom();
  Date submissionDate = document.getOnlyField("submissionDate").getDate();
  // [END access_document]
  out.println("coverLetter: " + coverLetter);
  out.println("resume: " + resume);
  out.println("fullName: " + fullName);
  out.println("submissionDate: " + submissionDate.toString());
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp)
    throws IOException {
  // Put one document to avoid an error
  Document document = Document.newBuilder()
      .setId("theOnlyCoffeeRoaster")
      .addField(Field.newBuilder().setName("price").setNumber(200))
      .addField(Field.newBuilder().setName("model").setText("TZ4000"))
      .addField(Field.newBuilder().setName("brand").setText("MyBrand"))
      .addField(Field.newBuilder().setName("product").setText("coffee roaster"))
      .addField(Field.newBuilder()
          .setName("description").setText("A coffee bean roaster at home"))
      .build();
  try {
    Utils.indexADocument(SEARCH_INDEX, document);
  } catch (InterruptedException e) {
    // ignore
  }
  PrintWriter out = resp.getWriter();
  Results<ScoredDocument> result = doSearch();
  for (ScoredDocument doc : result.getResults()) {
    out.println(doc.toString());
  }
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
/**
 * Put a given document into an index with the given indexName.
 * @param indexName The name of the index.
 * @param document A document to add.
 * @throws InterruptedException When Thread.sleep is interrupted.
 */
// [START putting_document_with_retry]
public static void indexADocument(String indexName, Document document)
    throws InterruptedException {
  IndexSpec indexSpec = IndexSpec.newBuilder().setName(indexName).build();
  Index index = SearchServiceFactory.getSearchService().getIndex(indexSpec);

  final int maxRetry = 3;
  int attempts = 0;
  int delay = 2;
  while (true) {
    try {
      index.put(document);
    } catch (PutException e) {
      if (StatusCode.TRANSIENT_ERROR.equals(e.getOperationResult().getCode())
          && ++attempts < maxRetry) { // retrying
        Thread.sleep(delay * 1000);
        delay *= 2; // easy exponential backoff
        continue;
      } else {
        throw e; // otherwise throw
      }
    }
    break;
  }
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
@Test
public void indexADocument_successfullyInvoked() throws Exception {
  String id = "test";
  Document doc = Document.newBuilder()
      .setId(id)
      .addField(Field.newBuilder().setName("f").setText("v"))
      .build();
  Utils.indexADocument(INDEX, doc);
  // get the document by id
  IndexSpec indexSpec = IndexSpec.newBuilder().setName(INDEX).build();
  Index index = SearchServiceFactory.getSearchService().getIndex(indexSpec);
  Document fetched = index.get(id);
  assertThat(fetched.getOnlyField("f").getText())
      .named("A value of the fetched document")
      .isEqualTo("v");
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
/**
 * Code snippet for creating a Document.
 *
 * @return Document Created document.
 */
public Document createDocument() {
  // [START create_document]
  User currentUser = UserServiceFactory.getUserService().getCurrentUser();
  String userEmail = currentUser == null ? "" : currentUser.getEmail();
  String userDomain = currentUser == null ? "" : currentUser.getAuthDomain();
  String myDocId = "PA6-5000";
  Document doc =
      Document.newBuilder()
          // Setting the document identifer is optional.
          // If omitted, the search service will create an identifier.
          .setId(myDocId)
          .addField(Field.newBuilder().setName("content").setText("the rain in spain"))
          .addField(Field.newBuilder().setName("email").setText(userEmail))
          .addField(Field.newBuilder().setName("domain").setAtom(userDomain))
          .addField(Field.newBuilder().setName("published").setDate(new Date()))
          .build();
  // [END create_document]
  return doc;
}
 

import com.google.appengine.api.search.Document; //导入依赖的package包/类
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
  PrintWriter out = resp.getWriter();
  Document document =
      Document.newBuilder()
          .addField(Field.newBuilder().setName("coverLetter").setText("CoverLetter"))
          .addField(Field.newBuilder().setName("resume").setHTML("<html></html>"))
          .addField(Field.newBuilder().setName("fullName").setAtom("Foo Bar"))
          .addField(Field.newBuilder().setName("submissionDate").setDate(new Date()))
          .build();
  // [START access_document]
  String coverLetter = document.getOnlyField("coverLetter").getText();
  String resume = document.getOnlyField("resume").getHTML();
  String fullName = document.getOnlyField("fullName").getAtom();
  Date submissionDate = document.getOnlyField("submissionDate").getDate();
  // [END access_document]
  out.println("coverLetter: " + coverLetter);
  out.println("resume: " + resume);
  out.println("fullName: " + fullName);
  out.println("submissionDate: " + submissionDate.toString());
}