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The MongoDB Synchronous Driver
/*
* Copyright 2008-present MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mongodb.client.internal;
import com.mongodb.Function;
import com.mongodb.MongoClientException;
import com.mongodb.MongoNamespace;
import com.mongodb.ReadConcern;
import com.mongodb.ReadPreference;
import com.mongodb.WriteConcern;
import com.mongodb.client.AggregateIterable;
import com.mongodb.client.ChangeStreamIterable;
import com.mongodb.client.ClientSession;
import com.mongodb.client.ListCollectionsIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.MongoIterable;
import com.mongodb.client.model.CreateCollectionOptions;
import com.mongodb.client.model.CreateViewOptions;
import com.mongodb.client.model.IndexOptionDefaults;
import com.mongodb.client.model.ValidationOptions;
import com.mongodb.client.model.changestream.ChangeStreamLevel;
import com.mongodb.client.model.AggregationLevel;
import com.mongodb.lang.Nullable;
import com.mongodb.operation.CommandReadOperation;
import com.mongodb.operation.CreateCollectionOperation;
import com.mongodb.operation.CreateViewOperation;
import com.mongodb.operation.DropDatabaseOperation;
import org.bson.BsonDocument;
import org.bson.Document;
import org.bson.codecs.configuration.CodecRegistry;
import org.bson.conversions.Bson;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import static com.mongodb.MongoNamespace.checkDatabaseNameValidity;
import static com.mongodb.assertions.Assertions.notNull;
/**
* This class is not part of the public API and may be removed or changed at any time.
*/
public class MongoDatabaseImpl implements MongoDatabase {
private final String name;
private final ReadPreference readPreference;
private final CodecRegistry codecRegistry;
private final WriteConcern writeConcern;
private final boolean retryWrites;
private final boolean retryReads;
private final ReadConcern readConcern;
private final OperationExecutor executor;
public MongoDatabaseImpl(final String name, final CodecRegistry codecRegistry, final ReadPreference readPreference,
final WriteConcern writeConcern, final boolean retryWrites, final boolean retryReads,
final ReadConcern readConcern, final OperationExecutor executor) {
checkDatabaseNameValidity(name);
this.name = notNull("name", name);
this.codecRegistry = notNull("codecRegistry", codecRegistry);
this.readPreference = notNull("readPreference", readPreference);
this.writeConcern = notNull("writeConcern", writeConcern);
this.retryWrites = retryWrites;
this.retryReads = retryReads;
this.readConcern = notNull("readConcern", readConcern);
this.executor = notNull("executor", executor);
}
@Override
public String getName() {
return name;
}
@Override
public CodecRegistry getCodecRegistry() {
return codecRegistry;
}
@Override
public ReadPreference getReadPreference() {
return readPreference;
}
@Override
public WriteConcern getWriteConcern() {
return writeConcern;
}
@Override
public ReadConcern getReadConcern() {
return readConcern;
}
@Override
public MongoDatabase withCodecRegistry(final CodecRegistry codecRegistry) {
return new MongoDatabaseImpl(name, codecRegistry, readPreference, writeConcern, retryWrites, retryReads, readConcern, executor);
}
@Override
public MongoDatabase withReadPreference(final ReadPreference readPreference) {
return new MongoDatabaseImpl(name, codecRegistry, readPreference, writeConcern, retryWrites, retryReads, readConcern, executor);
}
@Override
public MongoDatabase withWriteConcern(final WriteConcern writeConcern) {
return new MongoDatabaseImpl(name, codecRegistry, readPreference, writeConcern, retryWrites, retryReads, readConcern, executor);
}
@Override
public MongoDatabase withReadConcern(final ReadConcern readConcern) {
return new MongoDatabaseImpl(name, codecRegistry, readPreference, writeConcern, retryWrites, retryReads, readConcern, executor);
}
@Override
public MongoCollection getCollection(final String collectionName) {
return getCollection(collectionName, Document.class);
}
@Override
public MongoCollection getCollection(final String collectionName, final Class documentClass) {
return new MongoCollectionImpl(new MongoNamespace(name, collectionName), documentClass, codecRegistry, readPreference,
writeConcern, retryWrites, retryReads, readConcern, executor);
}
@Override
public Document runCommand(final Bson command) {
return runCommand(command, Document.class);
}
@Override
public Document runCommand(final Bson command, final ReadPreference readPreference) {
return runCommand(command, readPreference, Document.class);
}
@Override
public TResult runCommand(final Bson command, final Class resultClass) {
return runCommand(command, ReadPreference.primary(), resultClass);
}
@Override
public TResult runCommand(final Bson command, final ReadPreference readPreference, final Class resultClass) {
return executeCommand(null, command, readPreference, resultClass);
}
@Override
public Document runCommand(final ClientSession clientSession, final Bson command) {
return runCommand(clientSession, command, ReadPreference.primary(), Document.class);
}
@Override
public Document runCommand(final ClientSession clientSession, final Bson command, final ReadPreference readPreference) {
return runCommand(clientSession, command, readPreference, Document.class);
}
@Override
public TResult runCommand(final ClientSession clientSession, final Bson command, final Class resultClass) {
return runCommand(clientSession, command, ReadPreference.primary(), resultClass);
}
@Override
public TResult runCommand(final ClientSession clientSession, final Bson command, final ReadPreference readPreference,
final Class resultClass) {
notNull("clientSession", clientSession);
return executeCommand(clientSession, command, readPreference, resultClass);
}
private TResult executeCommand(@Nullable final ClientSession clientSession, final Bson command,
final ReadPreference readPreference, final Class resultClass) {
notNull("readPreference", readPreference);
if (clientSession != null && clientSession.hasActiveTransaction() && !readPreference.equals(ReadPreference.primary())) {
throw new MongoClientException("Read preference in a transaction must be primary");
}
return executor.execute(new CommandReadOperation(getName(), toBsonDocument(command), codecRegistry.get(resultClass)),
readPreference, readConcern, clientSession);
}
@Override
public void drop() {
executeDrop(null);
}
@Override
public void drop(final ClientSession clientSession) {
notNull("clientSession", clientSession);
executeDrop(clientSession);
}
private void executeDrop(@Nullable final ClientSession clientSession) {
executor.execute(new DropDatabaseOperation(name, getWriteConcern()), readConcern, clientSession);
}
@Override
public MongoIterable listCollectionNames() {
return createListCollectionNamesIterable(null);
}
@Override
public MongoIterable listCollectionNames(final ClientSession clientSession) {
notNull("clientSession", clientSession);
return createListCollectionNamesIterable(clientSession);
}
private MongoIterable createListCollectionNamesIterable(@Nullable final ClientSession clientSession) {
return createListCollectionsIterable(clientSession, BsonDocument.class, true)
.map(new Function() {
@Override
public String apply(final BsonDocument result) {
return result.getString("name").getValue();
}
});
}
@Override
public ListCollectionsIterable listCollections() {
return listCollections(Document.class);
}
@Override
public ListCollectionsIterable listCollections(final Class resultClass) {
return createListCollectionsIterable(null, resultClass, false);
}
@Override
public ListCollectionsIterable listCollections(final ClientSession clientSession) {
return listCollections(clientSession, Document.class);
}
@Override
public ListCollectionsIterable listCollections(final ClientSession clientSession, final Class resultClass) {
notNull("clientSession", clientSession);
return createListCollectionsIterable(clientSession, resultClass, false);
}
private ListCollectionsIterable createListCollectionsIterable(@Nullable final ClientSession clientSession,
final Class resultClass,
final boolean collectionNamesOnly) {
return MongoIterables.listCollectionsOf(clientSession, name, collectionNamesOnly, resultClass, codecRegistry,
ReadPreference.primary(), executor, retryReads);
}
@Override
public void createCollection(final String collectionName) {
createCollection(collectionName, new CreateCollectionOptions());
}
@Override
public void createCollection(final String collectionName, final CreateCollectionOptions createCollectionOptions) {
executeCreateCollection(null, collectionName, createCollectionOptions);
}
@Override
public void createCollection(final ClientSession clientSession, final String collectionName) {
createCollection(clientSession, collectionName, new CreateCollectionOptions());
}
@Override
public void createCollection(final ClientSession clientSession, final String collectionName,
final CreateCollectionOptions createCollectionOptions) {
notNull("clientSession", clientSession);
executeCreateCollection(clientSession, collectionName, createCollectionOptions);
}
@SuppressWarnings("deprecation")
private void executeCreateCollection(@Nullable final ClientSession clientSession, final String collectionName,
final CreateCollectionOptions createCollectionOptions) {
CreateCollectionOperation operation = new CreateCollectionOperation(name, collectionName, writeConcern)
.collation(createCollectionOptions.getCollation())
.capped(createCollectionOptions.isCapped())
.sizeInBytes(createCollectionOptions.getSizeInBytes())
.autoIndex(createCollectionOptions.isAutoIndex())
.maxDocuments(createCollectionOptions.getMaxDocuments())
.usePowerOf2Sizes(createCollectionOptions.isUsePowerOf2Sizes())
.storageEngineOptions(toBsonDocument(createCollectionOptions.getStorageEngineOptions()));
IndexOptionDefaults indexOptionDefaults = createCollectionOptions.getIndexOptionDefaults();
Bson storageEngine = indexOptionDefaults.getStorageEngine();
if (storageEngine != null) {
operation.indexOptionDefaults(new BsonDocument("storageEngine", toBsonDocument(storageEngine)));
}
ValidationOptions validationOptions = createCollectionOptions.getValidationOptions();
Bson validator = validationOptions.getValidator();
if (validator != null) {
operation.validator(toBsonDocument(validator));
}
if (validationOptions.getValidationLevel() != null) {
operation.validationLevel(validationOptions.getValidationLevel());
}
if (validationOptions.getValidationAction() != null) {
operation.validationAction(validationOptions.getValidationAction());
}
executor.execute(operation, readConcern, clientSession);
}
@Override
public void createView(final String viewName, final String viewOn, final List pipeline) {
createView(viewName, viewOn, pipeline, new CreateViewOptions());
}
@Override
public void createView(final String viewName, final String viewOn, final List pipeline,
final CreateViewOptions createViewOptions) {
executeCreateView(null, viewName, viewOn, pipeline, createViewOptions);
}
@Override
public void createView(final ClientSession clientSession, final String viewName, final String viewOn,
final List pipeline) {
createView(clientSession, viewName, viewOn, pipeline, new CreateViewOptions());
}
@Override
public void createView(final ClientSession clientSession, final String viewName, final String viewOn,
final List pipeline, final CreateViewOptions createViewOptions) {
notNull("clientSession", clientSession);
executeCreateView(clientSession, viewName, viewOn, pipeline, createViewOptions);
}
@Override
public ChangeStreamIterable watch() {
return watch(Collections.emptyList());
}
@Override
public ChangeStreamIterable watch(final Class resultClass) {
return watch(Collections.emptyList(), resultClass);
}
@Override
public ChangeStreamIterable watch(final List pipeline) {
return watch(pipeline, Document.class);
}
@Override
public ChangeStreamIterable watch(final List pipeline, final Class resultClass) {
return createChangeStreamIterable(null, pipeline, resultClass);
}
@Override
public ChangeStreamIterable watch(final ClientSession clientSession) {
return watch(clientSession, Collections.emptyList(), Document.class);
}
@Override
public ChangeStreamIterable watch(final ClientSession clientSession, final Class resultClass) {
return watch(clientSession, Collections.emptyList(), resultClass);
}
@Override
public ChangeStreamIterable watch(final ClientSession clientSession, final List pipeline) {
return watch(clientSession, pipeline, Document.class);
}
@Override
public ChangeStreamIterable watch(final ClientSession clientSession, final List pipeline,
final Class resultClass) {
notNull("clientSession", clientSession);
return createChangeStreamIterable(clientSession, pipeline, resultClass);
}
@Override
public AggregateIterable aggregate(final List pipeline) {
return aggregate(pipeline, Document.class);
}
@Override
public AggregateIterable aggregate(final List pipeline, final Class resultClass) {
return createAggregateIterable(null, pipeline, resultClass);
}
@Override
public AggregateIterable aggregate(final ClientSession clientSession, final List pipeline) {
return aggregate(clientSession, pipeline, Document.class);
}
@Override
public AggregateIterable aggregate(final ClientSession clientSession, final List pipeline,
final Class resultClass) {
notNull("clientSession", clientSession);
return createAggregateIterable(clientSession, pipeline, resultClass);
}
private AggregateIterable createAggregateIterable(@Nullable final ClientSession clientSession,
final List pipeline,
final Class resultClass) {
return MongoIterables.aggregateOf(clientSession, name, Document.class, resultClass, codecRegistry,
readPreference, readConcern, writeConcern, executor, pipeline, AggregationLevel.DATABASE, retryReads);
}
private ChangeStreamIterable createChangeStreamIterable(@Nullable final ClientSession clientSession,
final List pipeline,
final Class resultClass) {
return MongoIterables.changeStreamOf(clientSession, name, codecRegistry, readPreference,
readConcern, executor, pipeline, resultClass, ChangeStreamLevel.DATABASE, retryReads);
}
private void executeCreateView(@Nullable final ClientSession clientSession, final String viewName, final String viewOn,
final List pipeline, final CreateViewOptions createViewOptions) {
notNull("createViewOptions", createViewOptions);
executor.execute(new CreateViewOperation(name, viewName, viewOn, createBsonDocumentList(pipeline), writeConcern)
.collation(createViewOptions.getCollation()),
readConcern, clientSession);
}
private List createBsonDocumentList(final List pipeline) {
notNull("pipeline", pipeline);
List bsonDocumentPipeline = new ArrayList(pipeline.size());
for (Bson obj : pipeline) {
if (obj == null) {
throw new IllegalArgumentException("pipeline can not contain a null value");
}
bsonDocumentPipeline.add(obj.toBsonDocument(BsonDocument.class, codecRegistry));
}
return bsonDocumentPipeline;
}
@Nullable
private BsonDocument toBsonDocument(@Nullable final Bson document) {
return document == null ? null : document.toBsonDocument(BsonDocument.class, codecRegistry);
}
}