本文整理了Java中com.google.appengine.api.datastore.Entity.hasProperty()方法的一些代码示例，展示了Entity.hasProperty()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Entity.hasProperty()方法的具体详情如下：
包路径：com.google.appengine.api.datastore.Entity
类名称：Entity
方法名：hasProperty

Entity.hasProperty介绍

暂无

代码示例

代码示例来源：origin: org.vesalainen.dsql/dsql

@Override
public boolean activate(Entity data)
{
  return data.hasProperty(SubjectProperty);
}

代码示例来源：origin: com.googlecode.cedar-common/objectify

public final void set(Object toPojo, Object value, LoadContext context)
{
  if (this.collisionPaths != null)
    for (String collPath: this.collisionPaths)
      if (context.getEntity().hasProperty(collPath))
        throw new IllegalStateException("Tried to load the same field twice.  Check the path " + collPath + " in entity " + context.getEntity().toString());
  this.safeSet(toPojo, value, context);
}

代码示例来源：origin: com.google.appengine.tools/appengine-pipeline

public JobInstanceRecord(Entity entity) {
 super(entity);
 jobKey = (Key) entity.getProperty(JOB_KEY_PROPERTY);
 jobClassName = (String) entity.getProperty(JOB_CLASS_NAME_PROPERTY);
 if (entity.hasProperty(JOB_DISPLAY_NAME_PROPERTY)) {
  jobDisplayName = (String) entity.getProperty(JOB_DISPLAY_NAME_PROPERTY);
 } else {
  jobDisplayName = jobClassName;
 }
 if (entity.hasProperty(INSTANCE_BYTES_PROPERTY)) {
  value = entity.getProperty(INSTANCE_BYTES_PROPERTY);
 } else {
  value = entity.getProperty(INSTANCE_VALUE_PROPERTY);
 }
}

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

protected int getSizeUsingChildKeysInParent(ObjectProvider op) {
 Entity ownerEntity = getOwnerEntity(op);
 // Child keys are stored in field in owner Entity
 String propName = EntityUtils.getPropertyName(storeMgr.getIdentifierFactory(), ownerMemberMetaData);
 if (ownerEntity.hasProperty(propName)) {
  Object value = ownerEntity.getProperty(propName);
  if (value == null) {
   return 0;
  }
  List<Key> keys = (List<Key>) value;
  return keys.size();
 }
 return 0;
}

代码示例来源：origin: org.vesalainen.dsql/dsql

@Override
public Updateable<Entity, Object> getUpdateable(Entity entity, String property, Object value)
  assert entity.hasProperty(property) && !(entity.getProperty(property) instanceof RawValue);
  boolean indexed = false;
  ColumnMetadata cm = statistics.getProperty(entity.getKind(), property);

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

public Iterator iterator(ObjectProvider op) {
 ExecutionContext ec = op.getExecutionContext();
 if (MetaDataUtils.readRelatedKeysFromParent(storeMgr, ownerMemberMetaData)) {
  // Get child keys from property in owner Entity if the property exists
  Entity datastoreEntity = getOwnerEntity(op);
  String propName = EntityUtils.getPropertyName(storeMgr.getIdentifierFactory(), ownerMemberMetaData);
  if (datastoreEntity.hasProperty(propName)) {
   return getChildrenFromParentField(op, ec, -1, -1).listIterator();
  } else {
   if (MetaDataUtils.isOwnedRelation(ownerMemberMetaData, storeMgr)) {
    // Not yet got the property in the parent, so this entity has not yet been migrated to latest storage version
    NucleusLogger.PERSISTENCE.info("Collection at field " + ownerMemberMetaData.getFullFieldName() + " of " + op +
      " not yet migrated to latest storage version, so reading elements via the parent key");
   }
  }
 }
 if (MetaDataUtils.isOwnedRelation(ownerMemberMetaData, storeMgr)) {
  // Get child keys by doing a query with the owner as the parent Entity
  ApiAdapter apiAdapter = ec.getApiAdapter();
  Key parentKey = EntityUtils.getPrimaryKeyAsKey(apiAdapter, op);
  return getChildrenUsingParentQuery(parentKey, Collections.<Query.FilterPredicate>emptyList(),
    Collections.<Query.SortPredicate>emptyList(), ec).iterator();
 } else {
  return Utils.newArrayList().listIterator();
 }
}

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

Entity datastoreEntity = getOwnerEntity(op);
String propName = EntityUtils.getPropertyName(storeMgr.getIdentifierFactory(), ownerMemberMetaData);
if (datastoreEntity.hasProperty(propName)) {
 Object value = datastoreEntity.getProperty(propName);
 if (value == null) {

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

if (cmd.hasDiscriminatorStrategy()) {
 String disProp = EntityUtils.getDiscriminatorPropertyName(storeMgr.getIdentifierFactory(), cmd.getDiscriminatorMetaDataForTable());
 if (disProp != null && entity.hasProperty(disProp)) {

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

if (datastoreEntity.hasProperty(propName)) {
 if (indexedList) {
  return getChildrenFromParentField(op, ec, startIdx, endIdx).listIterator();

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

if (ownerEntity.hasProperty(propName)) {
 Object value = ownerEntity.getProperty(propName);
 if (value == null) {

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

Entity datastoreEntity = getOwnerEntity(op);
String propName = EntityUtils.getPropertyName(storeMgr.getIdentifierFactory(), ownerMemberMetaData);
if (datastoreEntity.hasProperty(propName)) {
 Object value = datastoreEntity.getProperty(propName);
 if (value == null || (value instanceof Collection && ((Collection)value).isEmpty())) {

代码示例来源：origin: bedatadriven/activityinfo

if(block.hasProperty(PREFIX_POOL_PROPERTY) && block.hasProperty(PREFIX_OFFSET_PROPERTY)) {
  prefixPool = StringPools.toArray((Blob) block.getProperty(PREFIX_POOL_PROPERTY));
  prefixOffsets = ((Blob)block.getProperty(PREFIX_OFFSET_PROPERTY)).getBytes();

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

public int lastIndexOf(ObjectProvider op, Object element) {
 ExecutionContext ec = op.getExecutionContext();
 validateElementForReading(ec, element);
 ObjectProvider elementOP = ec.findObjectProvider(element);
 Key elementKey = EntityUtils.getPrimaryKeyAsKey(ec.getApiAdapter(), elementOP);
 if (elementKey == null) {
  // Not persistent
  return -1;
 }
 if (MetaDataUtils.readRelatedKeysFromParent(storeMgr, ownerMemberMetaData)) {
  // Return the position using the field of List<Key> in the owner
  String propName = EntityUtils.getPropertyName(storeMgr.getIdentifierFactory(), ownerMemberMetaData);
  Entity ownerEntity = getOwnerEntity(op);
  if (ownerEntity.hasProperty(propName)) {
   Object value = ownerEntity.getProperty(propName);
   if (value == null) {
    return -1;
   }
   List<Key> keys = (List<Key>) value;
   return keys.lastIndexOf(elementKey);
  }
 }
 // Owned relation in earlier storage version so use parentKey to determine membership of list (only present once)
 return indexOf(op, element);
}

代码示例来源：origin: GoogleCloudPlatform/appengine-tck

@Test
public void testEntity() {
  for (String ns : namespaceDat) {
    NamespaceManager.set(ns);
    Query query = new Query(kindName);
    Entity readRec = service.prepare(query).asIterator().next();
    assertEquals(ns, readRec.getNamespace());
    String appId = readRec.getAppId();
    appId = appId.substring(appId.indexOf("~") + 1);
    assertEquals(SystemProperty.applicationId.get(), appId);
    assertTrue(readRec.hasProperty("jobType"));
  }
}

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

if (datastoreEntity.hasProperty(propName)) {
 Object value = datastoreEntity.getProperty(propName);
 if (value == null) {

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

if (ownerEntity.hasProperty(propName)) {
 Object value = ownerEntity.getProperty(propName);
 if (value == null) {

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

if (!entity.hasProperty(name)) {
 throw new NucleusObjectNotFoundException(
   "Could not retrieve entity of kind " + key.getKind() + " with key " + key);

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

if (!entity.hasProperty(propName)) {
if (!entity.hasProperty(propName)) {
 AbstractClassMetaData childCmd = mmd.getCollection().getElementClassMetaData(clr, nucCtx.getMetaDataManager());
 String childKindName = EntityUtils.getKindName(storeMgr.getIdentifierFactory(), childCmd);

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

if (Relation.isRelationMultiValued(relationType)) {
 String propName = getPropertyNameForMember(mmd);
 if (datastoreEntity.hasProperty(propName)) {
  if (mmd.hasCollection()) {

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

if (datastoreEntity.hasProperty(propName)) {
 Object value = datastoreEntity.getProperty(propName);
 if (value == null) {