Examples with Extent com.google.appengine.api.datastore.dev.LocalDatastoreService.Extent used on opensource projects

Example 1 with Extent

use of com.google.appengine.api.datastore.dev.LocalDatastoreService.Extent in project appengine-java-standard by GoogleCloudPlatform.

the class NamespacePseudoKind method runQuery.

@Override
List<EntityProto> runQuery(Query query, Key startKey, boolean startInclusive, Key endKey, boolean endInclusive) {
    /* Ancestor has no meaning in namespace queries. This also has the desirable side effect that
     * schema queries cannot live in transactions. */
    checkRequest(!query.hasAncestor(), "ancestor queries on " + NAMESPACE_METADATA_KIND + " not allowed");
    String app = query.getApp();
    String startNamespace = namespaceKeyToString(startKey);
    String endNamespace = namespaceKeyToString(endKey);
    Profile profile = getDatastore().getOrCreateProfile(app);
    Map<String, Extent> extents = profile.getExtents();
    Set<String> namespaceSet = new HashSet<String>();
    synchronized (extents) {
        // Just collect all namespaces that are in the selected range
        for (Map.Entry<String, Extent> entry : extents.entrySet()) {
            for (EntityProto entity : entry.getValue().getAllEntityProtos()) {
                String namespace = entity.getKey().getNameSpace();
                // Apply filters.
                if (startNamespace != null) {
                    int namespacesCompared = namespace.compareTo(startNamespace);
                    if ((startInclusive && namespacesCompared < 0) || (!startInclusive && namespacesCompared <= 0)) {
                        continue;
                    }
                }
                if (endNamespace != null) {
                    int namespacesCompared = namespace.compareTo(endNamespace);
                    if ((endInclusive && namespacesCompared > 0) || (!endInclusive && namespacesCompared >= 0)) {
                        continue;
                    }
                }
                namespaceSet.add(namespace);
            }
        }
    }
    return makeNamespaceEntities(namespaceSet, app, query.getNameSpace());
}

Example 2 with Extent

use of com.google.appengine.api.datastore.dev.LocalDatastoreService.Extent in project appengine-java-standard by GoogleCloudPlatform.

the class PropertyPseudoKind method getProperties.

/**
 * Get the results of a __property__ query over the specified range.
 */
private List<EntityProto> getProperties(String app, String namespace, boolean keysOnly, KindProperty start, boolean startInclusive, KindProperty end, boolean endInclusive) {
    Profile profile = getDatastore().getOrCreateProfile(app);
    Map<String, Extent> extents = profile.getExtents();
    List<EntityProto> schema = Lists.newArrayList();
    synchronized (extents) {
        // that kind.
        for (Map.Entry<String, Extent> entry : extents.entrySet()) {
            String kind = entry.getKey();
            boolean startKindEqual = false;
            boolean endKindEqual = false;
            // Apply kind filter (inclusive is only meaningful at the property level).
            if (start.kind != null) {
                int kindsCompared = kind.compareTo(start.kind);
                startKindEqual = kindsCompared == 0;
                if (kindsCompared < 0) {
                    continue;
                }
            }
            if (end.kind != null) {
                int kindsCompared = kind.compareTo(end.kind);
                endKindEqual = kindsCompared == 0;
                if (kindsCompared > 0) {
                    continue;
                }
            }
            List<EntityProto> entities = getEntitiesForNamespace(entry.getValue(), namespace);
            // Skip kinds with no entities in the specified namespace
            if (entities.isEmpty()) {
                continue;
            }
            // Collect and add the indexed properties. (schema queries don't
            // report unindexed properties; details in http://b/1004244)
            SortedSetMultimap<String, String> allProps = TreeMultimap.create();
            for (EntityProto entity : entities) {
                for (Property prop : entity.propertys()) {
                    String name = prop.getName();
                    PropertyType type = PropertyType.getType(prop.getValue());
                    // Apply start property filter if kind equal to start.kind
                    if (startKindEqual) {
                        int propertysCompared = name.compareTo(start.property);
                        if ((startInclusive && propertysCompared < 0) || (!startInclusive && propertysCompared <= 0)) {
                            continue;
                        }
                    }
                    // Apply end property filter if kind equal to end.kind
                    if (endKindEqual) {
                        int propertysCompared = name.compareTo(end.property);
                        if ((endInclusive && propertysCompared > 0) || (!endInclusive && propertysCompared >= 0)) {
                            continue;
                        }
                    }
                    // Skip invisible special properties.
                    if (getDatastore().getSpecialPropertyMap().containsKey(name) && !getDatastore().getSpecialPropertyMap().get(name).isVisible()) {
                        continue;
                    }
                    allProps.put(name, type.name());
                }
            }
            addPropertyEntitiesToSchema(schema, kind, allProps, app, namespace, keysOnly);
        }
    }
    return schema;
}

Example 3 with Extent

use of com.google.appengine.api.datastore.dev.LocalDatastoreService.Extent in project appengine-java-standard by GoogleCloudPlatform.

the class KindPseudoKind method runQuery.

// Based on LocalDatastoreService.getSchema (now removed)
@Override
List<EntityProto> runQuery(Query query, Key startKey, boolean startInclusive, Key endKey, boolean endInclusive) {
    /* Ancestor has no meaning in schema queries. This also has the desirable side effect that
     * schema queries cannot live in transactions. */
    checkRequest(!query.hasAncestor(), "ancestor queries on " + KIND_METADATA_KIND + " not allowed");
    String app = query.getApp();
    String namespace = query.getNameSpace();
    String startKind = kindKeyToString(startKey);
    String endKind = kindKeyToString(endKey);
    Profile profile = getDatastore().getOrCreateProfile(app);
    Map<String, Extent> extents = profile.getExtents();
    List<EntityProto> kinds = Lists.newArrayList();
    synchronized (extents) {
        // We create one EntityProto per kind with a key containing the kind name
        for (Map.Entry<String, Extent> entry : extents.entrySet()) {
            String kind = entry.getKey();
            // Apply filters.
            if (startKind != null) {
                int kindsCompared = kind.compareTo(startKind);
                if ((startInclusive && kindsCompared < 0) || (!startInclusive && kindsCompared <= 0)) {
                    continue;
                }
            }
            if (endKind != null) {
                int kindsCompared = kind.compareTo(endKind);
                if ((endInclusive && kindsCompared > 0) || (!endInclusive && kindsCompared >= 0)) {
                    continue;
                }
            }
            if (entry.getValue().getAllEntityProtos().isEmpty()) {
                // no entities of this kind
                continue;
            }
            // Add an entry only if entities exist in the requested namespace.
            if (isKindPresentInNamespace(entry.getValue(), namespace)) {
                kinds.add(makeKindEntity(kind, app, namespace));
            }
        }
    }
    return kinds;
}