/*
* Copyright 2016 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.model;
import com.mongodb.BasicDBObject;
import com.mongodb.CursorType;
import com.mongodb.DBObject;
import com.mongodb.ReadConcern;
import com.mongodb.ReadPreference;
import java.util.concurrent.TimeUnit;
import static com.mongodb.assertions.Assertions.isTrueArgument;
import static com.mongodb.assertions.Assertions.notNull;
/**
* The options to apply to a find operation (also commonly referred to as a query).
*
* @since 3.4
* @mongodb.driver.manual tutorial/query-documents/ Find
* @mongodb.driver.manual ../meta-driver/latest/legacy/mongodb-wire-protocol/#op-query OP_QUERY
*/
public final class DBCollectionFindOptions {
private int batchSize;
private int limit;
private DBObject modifiers = new BasicDBObject();
private DBObject projection;
private long maxTimeMS;
private long maxAwaitTimeMS;
private int skip;
private DBObject sort;
private CursorType cursorType = CursorType.NonTailable;
private boolean noCursorTimeout;
private boolean oplogReplay;
private boolean partial;
private ReadPreference readPreference;
private ReadConcern readConcern;
private Collation collation;
/**
* Construct a new instance
*/
public DBCollectionFindOptions() {
}
/**
* Copy this DBCollectionFindOptions instance into a new instance.
*
* @return the new DBCollectionFindOptions with the same settings as this instance.
*/
public DBCollectionFindOptions copy() {
DBCollectionFindOptions copiedOptions = new DBCollectionFindOptions();
copiedOptions.batchSize(batchSize);
copiedOptions.limit(limit);
copiedOptions.modifiers(modifiers);
copiedOptions.projection(projection);
copiedOptions.maxTime(maxTimeMS, TimeUnit.MILLISECONDS);
copiedOptions.maxAwaitTime(maxAwaitTimeMS, TimeUnit.MILLISECONDS);
copiedOptions.skip(skip);
copiedOptions.sort(sort);
copiedOptions.cursorType(cursorType);
copiedOptions.noCursorTimeout(noCursorTimeout);
copiedOptions.oplogReplay(oplogReplay);
copiedOptions.partial(partial);
copiedOptions.readPreference(readPreference);
copiedOptions.readConcern(readConcern);
copiedOptions.collation(collation);
return copiedOptions;
}
/**
* Gets the limit to apply. The default is null.
*
* @return the limit
* @mongodb.driver.manual reference/method/cursor.limit/#cursor.limit Limit
*/
public int getLimit() {
return limit;
}
/**
* Sets the limit to apply.
*
* @param limit the limit, which may be null
* @return this
* @mongodb.driver.manual reference/method/cursor.limit/#cursor.limit Limit
*/
public DBCollectionFindOptions limit(final int limit) {
this.limit = limit;
return this;
}
/**
* Gets the number of documents to skip. The default is 0.
*
* @return the number of documents to skip, which may be null
* @mongodb.driver.manual reference/method/cursor.skip/#cursor.skip Skip
*/
public int getSkip() {
return skip;
}
/**
* Sets the number of documents to skip.
*
* @param skip the number of documents to skip
* @return this
* @mongodb.driver.manual reference/method/cursor.skip/#cursor.skip Skip
*/
public DBCollectionFindOptions skip(final int skip) {
this.skip = skip;
return this;
}
/**
* Gets the maximum execution time on the server for this operation. The default is 0, which places no limit on the execution time.
*
* @param timeUnit the time unit to return the result in
* @return the maximum execution time in the given time unit
* @mongodb.driver.manual reference/method/cursor.maxTimeMS/#cursor.maxTimeMS Max Time
*/
public long getMaxTime(final TimeUnit timeUnit) {
notNull("timeUnit", timeUnit);
return timeUnit.convert(maxTimeMS, TimeUnit.MILLISECONDS);
}
/**
* Sets the maximum execution time on the server for this operation.
*
* @param maxTime the max time
* @param timeUnit the time unit, which may not be null
* @return this
* @mongodb.driver.manual reference/method/cursor.maxTimeMS/#cursor.maxTimeMS Max Time
*/
public DBCollectionFindOptions maxTime(final long maxTime, final TimeUnit timeUnit) {
notNull("timeUnit", timeUnit);
isTrueArgument("maxTime > = 0", maxTime >= 0);
this.maxTimeMS = TimeUnit.MILLISECONDS.convert(maxTime, timeUnit);
return this;
}
/**
* The maximum amount of time for the server to wait on new documents to satisfy a tailable cursor
* query. This only applies to a TAILABLE_AWAIT cursor. When the cursor is not a TAILABLE_AWAIT cursor,
* this option is ignored.
*
* On servers >= 3.2, this option will be specified on the getMore command as "maxTimeMS". The default
* is no value: no "maxTimeMS" is sent to the server with the getMore command.
*
* On servers < 3.2, this option is ignored, and indicates that the driver should respect the server's default value
*
* A zero value will be ignored.
*
* @param timeUnit the time unit to return the result in
* @return the maximum await execution time in the given time unit
* @mongodb.driver.manual reference/method/cursor.maxTimeMS/#cursor.maxTimeMS Max Time
*/
public long getMaxAwaitTime(final TimeUnit timeUnit) {
notNull("timeUnit", timeUnit);
return timeUnit.convert(maxAwaitTimeMS, TimeUnit.MILLISECONDS);
}
/**
* Sets the maximum await execution time on the server for this operation.
*
* @param maxAwaitTime the max await time. A zero value will be ignored, and indicates that the driver should respect the server's
* default value
* @param timeUnit the time unit, which may not be null
* @return this
* @mongodb.driver.manual reference/method/cursor.maxTimeMS/#cursor.maxTimeMS Max Time
*/
public DBCollectionFindOptions maxAwaitTime(final long maxAwaitTime, final TimeUnit timeUnit) {
notNull("timeUnit", timeUnit);
isTrueArgument("maxAwaitTime > = 0", maxAwaitTime >= 0);
this.maxAwaitTimeMS = TimeUnit.MILLISECONDS.convert(maxAwaitTime, timeUnit);
return this;
}
/**
* Gets the number of documents to return per batch. Default to 0, which indicates that the server chooses an appropriate batch
* size.
*
* @return the batch size, which may be null
* @mongodb.driver.manual reference/method/cursor.batchSize/#cursor.batchSize Batch Size
*/
public int getBatchSize() {
return batchSize;
}
/**
* Sets the number of documents to return per batch.
*
* @param batchSize the batch size
* @return this
* @mongodb.driver.manual reference/method/cursor.batchSize/#cursor.batchSize Batch Size
*/
public DBCollectionFindOptions batchSize(final int batchSize) {
this.batchSize = batchSize;
return this;
}
/**
* Gets the query modifiers to apply to this operation. The default is not to apply any modifiers.
*
* @return the query modifiers, which may be null
* @mongodb.driver.manual reference/operator/query-modifier/ Query Modifiers
*/
public DBObject getModifiers() {
return modifiers;
}
/**
* Sets the query modifiers to apply to this operation.
*
* @param modifiers the query modifiers to apply, which may be null.
* @return this
* @mongodb.driver.manual reference/operator/query-modifier/ Query Modifiers
*/
public DBCollectionFindOptions modifiers(final DBObject modifiers) {
this.modifiers = notNull("modifiers", modifiers);
return this;
}
/**
* Gets a document describing the fields to return for all matching documents.
*
* @return the project document, which may be null
* @mongodb.driver.manual reference/method/db.collection.find/ Projection
*/
public DBObject getProjection() {
return projection;
}
/**
* Sets a document describing the fields to return for all matching documents.
*
* @param projection the project document, which may be null.
* @return this
* @mongodb.driver.manual reference/method/db.collection.find/ Projection
*/
public DBCollectionFindOptions projection(final DBObject projection) {
this.projection = projection;
return this;
}
/**
* Gets the sort criteria to apply to the query. The default is null, which means that the documents will be returned in an undefined
* order.
*
* @return a document describing the sort criteria
* @mongodb.driver.manual reference/method/cursor.sort/ Sort
*/
public DBObject getSort() {
return sort;
}
/**
* Sets the sort criteria to apply to the query.
*
* @param sort the sort criteria, which may be null.
* @return this
* @mongodb.driver.manual reference/method/cursor.sort/ Sort
*/
public DBCollectionFindOptions sort(final DBObject sort) {
this.sort = sort;
return this;
}
/**
* The server normally times out idle cursors after an inactivity period (10 minutes)
* to prevent excess memory use. If true, that timeout is disabled.
*
* @return true if cursor timeout is disabled
*/
public boolean isNoCursorTimeout() {
return noCursorTimeout;
}
/**
* The server normally times out idle cursors after an inactivity period (10 minutes)
* to prevent excess memory use. Set this option to prevent that.
*
* @param noCursorTimeout true if cursor timeout is disabled
* @return this
*/
public DBCollectionFindOptions noCursorTimeout(final boolean noCursorTimeout) {
this.noCursorTimeout = noCursorTimeout;
return this;
}
/**
* Users should not set this under normal circumstances.
*
* @return if oplog replay is enabled
*/
public boolean isOplogReplay() {
return oplogReplay;
}
/**
* Users should not set this under normal circumstances.
*
* @param oplogReplay if oplog replay is enabled
* @return this
*/
public DBCollectionFindOptions oplogReplay(final boolean oplogReplay) {
this.oplogReplay = oplogReplay;
return this;
}
/**
* Get partial results from a sharded cluster if one or more shards are unreachable (instead of throwing an error).
*
* @return if partial results for sharded clusters is enabled
*/
public boolean isPartial() {
return partial;
}
/**
* Get partial results from a sharded cluster if one or more shards are unreachable (instead of throwing an error).
*
* @param partial if partial results for sharded clusters is enabled
* @return this
*/
public DBCollectionFindOptions partial(final boolean partial) {
this.partial = partial;
return this;
}
/**
* Get the cursor type.
*
* @return the cursor type
*/
public CursorType getCursorType() {
return cursorType;
}
/**
* Sets the cursor type.
*
* @param cursorType the cursor type
* @return this
*/
public DBCollectionFindOptions cursorType(final CursorType cursorType) {
this.cursorType = notNull("cursorType", cursorType);
return this;
}
/**
* Returns the readPreference
*
* @return the readPreference
*/
public ReadPreference getReadPreference() {
return readPreference;
}
/**
* Sets the readPreference
*
* @param readPreference the readPreference
* @return this
*/
public DBCollectionFindOptions readPreference(final ReadPreference readPreference) {
this.readPreference = readPreference;
return this;
}
/**
* Returns the readConcern
*
* @return the readConcern
* @mongodb.server.release 3.2
*/
public ReadConcern getReadConcern() {
return readConcern;
}
/**
* Sets the readConcern
*
* @param readConcern the readConcern
* @return this
* @mongodb.server.release 3.2
*/
public DBCollectionFindOptions readConcern(final ReadConcern readConcern) {
this.readConcern = readConcern;
return this;
}
/**
* Returns the collation options
*
* @return the collation options
* @mongodb.server.release 3.4
*/
public Collation getCollation() {
return collation;
}
/**
* Sets the collation
*
* @param collation the collation
* @return this
* @mongodb.server.release 3.4
*/
public DBCollectionFindOptions collation(final Collation collation) {
this.collation = collation;
return this;
}
}