本文整理汇总了Java中com.google.appengine.api.datastore.Query.FilterPredicate方法的典型用法代码示例。如果您正苦于以下问题：Java Query.FilterPredicate方法的具体用法？Java Query.FilterPredicate怎么用？Java Query.FilterPredicate使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.google.appengine.api.datastore.Query的用法示例。
在下文中一共展示了Query.FilterPredicate方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getLastStatus
import com.google.appengine.api.datastore.Query; //导入方法依赖的package包/类
private ArrayList<Medicion> getLastStatus(int amountData) {
// Poner Key estacion + hora_muestra
Calendar calendarTwoAgo = Calendar.getInstance(TimeZone.getTimeZone("CET"));
calendarTwoAgo.add(Calendar.DATE, -3);
Date dateTwoAgo = calendarTwoAgo.getTime();
// Prepare
Query.Filter keyFilter = new Query.FilterPredicate(PROPERTY_MEASURE_DATE, Query.FilterOperator.GREATER_THAN, dateTwoAgo);
Query.Filter no2Filter = new Query.FilterPredicate(PROPERTY_COMPUESTO, Query.FilterOperator.EQUAL, NO2.name());
List<Query.Filter> filterList = new ArrayList<>();
filterList.add(keyFilter);
filterList.add(no2Filter);
Query.Filter filter = new Query.CompositeFilter(Query.CompositeFilterOperator.AND, filterList);
Query query = new Query(ENTITY_TYPE_MEDIDAS)
.setFilter(filter)
.addSort(PROPERTY_MEASURE_DATE
, Query.SortDirection.DESCENDING);
// Query
DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
PreparedQuery pq = datastore.prepare(query);
// Get results
List<com.google.appengine.api.datastore.Entity> resultList = pq.asList(FetchOptions.Builder.withLimit(amountData));
ArrayList<Medicion> result = new ArrayList<>();
if (resultList.size()!=0) {
mLogger.info("Watching " + resultList.size() + " last values of ESTADO");
for (com.google.appengine.api.datastore.Entity item : resultList){
result.add(new Medicion((Date) item.getProperty(PROPERTY_MEASURE_DATE), (String) item.getProperty(PROPERTY_AVISO), (String) item.getProperty(PROPERTY_AVISO_STATE), (String) item.getProperty(PREPERTY_AVISO_MAX_TODAY), (String) item.getProperty(PROPERTY_ESCENARIO_STATE_TODAY), (String) item.getProperty(PROPERTY_ESCENARIO_STATE_TOMORROW), (String) item.getProperty(PROPERTY_ESCENARIO_STATE_TOMORROW_MANUAL) ,isPureMadrid()));
}
} else {
// No hay datos
mLogger.info("No previous values for ESTADO");
}
return result;
}
示例2: doExecute
import com.google.appengine.api.datastore.Query; //导入方法依赖的package包/类
protected Object doExecute(Object[] parameters) {
Class<?> domainClass = queryMethod.getEntityInformation().getJavaType();
int paramIndex = 0;
PartTree tree = new PartTree(getQueryMethod().getName(), getQueryMethod().getEntityInformation().getJavaType());
System.out.println(tree);
List<Filter> orFilters = new ArrayList<Filter>();
for (Iterator<OrPart> orPartIter = tree.iterator(); orPartIter.hasNext();) {
OrPart orPart = orPartIter.next();
List<Filter> andFilters = new ArrayList<Filter>();
for (Iterator<Part> partIter = orPart.iterator(); partIter.hasNext();) {
Part part = partIter.next();
PropertyPath propertyPath = part.getProperty();
String propName = propertyPath.getSegment();
Object propValue = parameters[paramIndex++];
FilterOperator operator = getFilterOperation(part);
Filter filter = new Query.FilterPredicate(propName, operator, propValue);
andFilters.add(filter);
}
if (andFilters.size() == 1) {
orFilters.add(andFilters.get(0));
} else if (andFilters.size() >= 2){
orFilters.add(CompositeFilterOperator.and(andFilters));
}
}
com.googlecode.objectify.cmd.Query q = ofy().load().type(domainClass);
if (orFilters.size() == 1) {
q = q.filter(orFilters.get(0));
} else if (orFilters.size() >= 2){
q = q.filter(CompositeFilterOperator.or(orFilters));
}
return q.list();
}
示例3: getStatusAt
import com.google.appengine.api.datastore.Query; //导入方法依赖的package包/类
@ApiMethod(path = "getStatusAt", name = "getStatusAt", httpMethod = ApiMethod.HttpMethod.GET)
public ApiMedicion getStatusAt(@Named("amount") Date date) {
Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("CET"));
// Fix offset
if (date.getTime() < 1505341800L * 1000){
date.setTime(date.getTime() - 3600L * 1000);
}
date.setTime(date.getTime());
calendar.setTime(date);
calendar.setTimeZone(TimeZone.getTimeZone("CET"));
// Prepare
Query.FilterPredicate filter = new Query.FilterPredicate(PROPERTY_MEASURE_DATE, Query.FilterOperator.EQUAL, date);
Query query = new Query(ENTITY_TYPE_MEDIDAS).setFilter(filter);
// Query
DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
PreparedQuery pq = datastore.prepare(query);
List<Entity> resultList = pq.asList(FetchOptions.Builder.withDefaults());
ApiMedicion medicion = new Medicion(MainServlet.isPureMadrid());
for (Entity entity : resultList){
Map<String, Object> properties = entity.getProperties();
Map<String, Object> mapMeditions = new HashMap<>();
String propertyCompuesto = (String) entity.getProperty(PROPERTY_COMPUESTO);
Compuesto compuesto = Compuesto.withName(propertyCompuesto);
medicion.setMeasuredAt((Date) entity.getProperty(PROPERTY_MEASURE_DATE));
medicion.setSavedAtHour((Date) entity.getProperty(PROPERTY_SAVED_AT));
if (entity.getProperty(PROPERTY_COMPUESTO).equals(Compuesto.NO2)){
medicion.setAviso((String) entity.getProperty(PROPERTY_AVISO));
medicion.setAvisoState((String) entity.getProperty(PROPERTY_AVISO_STATE));
medicion.setAvisoMaxToday((String) entity.getProperty(PREPERTY_AVISO_MAX_TODAY));
medicion.setEscenarioStateToday((String) entity.getProperty(PROPERTY_ESCENARIO_STATE_TODAY));
medicion.setEscenarioStateTomorrow((String) entity.getProperty(PROPERTY_ESCENARIO_STATE_TOMORROW));
}
for (Map.Entry<String, Object> entry : properties.entrySet()) {
if(entry.getKey().contains(PROPERTY_ESTACION_BEGINS)){
try {
mapMeditions.put(entry.getKey(), parseValue(entry.getValue()));
} catch (Exception e){
mLogger.warning("Error parsing data from Datastore: " + entry.getValue());
}
}
}
medicion.put(compuesto,mapMeditions);
}
return medicion;
}
示例4: toPredicate
import com.google.appengine.api.datastore.Query; //导入方法依赖的package包/类
private Query.Filter toPredicate(Condition condition) {
return new Query.FilterPredicate(condition.getProperty().getName(), convert(condition), condition.getValue());
}