| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| Count |
|
| 1.0;1 | ||||
| Count$Builder |
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| 1.0;1 |
| 1 | /* | |
| 2 | * #%L | |
| 3 | * Count.java - mongodb-async-driver - Allanbank Consulting, Inc. | |
| 4 | * %% | |
| 5 | * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc. | |
| 6 | * %% | |
| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 8 | * you may not use this file except in compliance with the License. | |
| 9 | * You may obtain a copy of the License at | |
| 10 | * | |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 12 | * | |
| 13 | * Unless required by applicable law or agreed to in writing, software | |
| 14 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 16 | * See the License for the specific language governing permissions and | |
| 17 | * limitations under the License. | |
| 18 | * #L% | |
| 19 | */ | |
| 20 | ||
| 21 | package com.allanbank.mongodb.builder; | |
| 22 | ||
| 23 | import java.util.concurrent.TimeUnit; | |
| 24 | ||
| 25 | import com.allanbank.mongodb.MongoCollection; | |
| 26 | import com.allanbank.mongodb.ReadPreference; | |
| 27 | import com.allanbank.mongodb.Version; | |
| 28 | import com.allanbank.mongodb.bson.Document; | |
| 29 | import com.allanbank.mongodb.bson.DocumentAssignable; | |
| 30 | ||
| 31 | /** | |
| 32 | * Count provides an immutable container for all of the options for a query to | |
| 33 | * count documents. | |
| 34 | * | |
| 35 | * @api.yes This class is part of the driver's API. Public and protected members | |
| 36 | * will be deprecated for at least 1 non-bugfix release (version | |
| 37 | * numbers are <major>.<minor>.<bugfix>) before being | |
| 38 | * removed or modified. | |
| 39 | * @copyright 2012-2013, Allanbank Consulting, Inc., All Rights Reserved | |
| 40 | */ | |
| 41 | public class Count { | |
| 42 | ||
| 43 | /** An (empty) query document to find all documents. */ | |
| 44 | 1 | public static final Document ALL = MongoCollection.ALL; |
| 45 | ||
| 46 | /** | |
| 47 | * The first version of MongoDB to support the {@code count} command with | |
| 48 | * the ability to limit the execution time on the server. | |
| 49 | */ | |
| 50 | 1 | public static final Version MAX_TIMEOUT_VERSION = Find.MAX_TIMEOUT_VERSION; |
| 51 | ||
| 52 | /** | |
| 53 | * Creates a new builder for a {@link Count}. | |
| 54 | * | |
| 55 | * @return The builder to construct a {@link Count}. | |
| 56 | */ | |
| 57 | public static Builder builder() { | |
| 58 | 27 | return new Builder(); |
| 59 | } | |
| 60 | ||
| 61 | /** The maximum amount of time to allow the query to run. */ | |
| 62 | private final long myMaximumTimeMilliseconds; | |
| 63 | ||
| 64 | /** The query document. */ | |
| 65 | private final Document myQuery; | |
| 66 | ||
| 67 | /** The preference for which servers to use to retrieve the results. */ | |
| 68 | private final ReadPreference myReadPreference; | |
| 69 | ||
| 70 | /** | |
| 71 | * Creates a new Count. | |
| 72 | * | |
| 73 | * @param builder | |
| 74 | * The builder to copy the query fields from. | |
| 75 | */ | |
| 76 | 32 | protected Count(final Builder builder) { |
| 77 | 32 | myQuery = builder.myQuery; |
| 78 | 32 | myReadPreference = builder.myReadPreference; |
| 79 | 32 | myMaximumTimeMilliseconds = builder.myMaximumTimeMilliseconds; |
| 80 | 32 | } |
| 81 | ||
| 82 | /** | |
| 83 | * Returns the maximum amount of time to allow the query to run on the | |
| 84 | * Server before it is aborted. | |
| 85 | * | |
| 86 | * @return The maximum amount of time to allow the query to run on the | |
| 87 | * Server before it is aborted. | |
| 88 | * | |
| 89 | * @since MongoDB 2.6 | |
| 90 | */ | |
| 91 | public long getMaximumTimeMilliseconds() { | |
| 92 | 30 | return myMaximumTimeMilliseconds; |
| 93 | } | |
| 94 | ||
| 95 | /** | |
| 96 | * Returns the query document. | |
| 97 | * | |
| 98 | * @return The query document. | |
| 99 | */ | |
| 100 | public Document getQuery() { | |
| 101 | 53 | return myQuery; |
| 102 | } | |
| 103 | ||
| 104 | /** | |
| 105 | * Returns the preference for the servers to retrieve the results from. May | |
| 106 | * be <code>null</code> in which case the default read preference should be | |
| 107 | * used. | |
| 108 | * | |
| 109 | * @return The preference for the servers to retrieve the results from. | |
| 110 | */ | |
| 111 | public ReadPreference getReadPreference() { | |
| 112 | 29 | return myReadPreference; |
| 113 | } | |
| 114 | ||
| 115 | /** | |
| 116 | * Helper for creating immutable {@link Count} queries. | |
| 117 | * | |
| 118 | * @api.yes This class is part of the driver's API. Public and protected | |
| 119 | * members will be deprecated for at least 1 non-bugfix release | |
| 120 | * (version numbers are <major>.<minor>.<bugfix>) | |
| 121 | * before being removed or modified. | |
| 122 | * @copyright 2012-2013, Allanbank Consulting, Inc., All Rights Reserved | |
| 123 | */ | |
| 124 | public static class Builder { | |
| 125 | ||
| 126 | /** The maximum amount of time to allow the query to run. */ | |
| 127 | protected long myMaximumTimeMilliseconds; | |
| 128 | ||
| 129 | /** The query document. */ | |
| 130 | protected Document myQuery; | |
| 131 | ||
| 132 | /** The preference for which servers to use to retrieve the results. */ | |
| 133 | protected ReadPreference myReadPreference; | |
| 134 | ||
| 135 | /** | |
| 136 | * Creates a new Builder. | |
| 137 | */ | |
| 138 | 30 | public Builder() { |
| 139 | 30 | reset(); |
| 140 | 30 | } |
| 141 | ||
| 142 | /** | |
| 143 | * Creates a new Builder. | |
| 144 | * | |
| 145 | * @param query | |
| 146 | * The query document. | |
| 147 | */ | |
| 148 | public Builder(final DocumentAssignable query) { | |
| 149 | 0 | this(); |
| 150 | 0 | myQuery = query.asDocument(); |
| 151 | 0 | } |
| 152 | ||
| 153 | /** | |
| 154 | * Constructs a new {@link Count} object from the state of the builder. | |
| 155 | * | |
| 156 | * @return The new {@link Count} object. | |
| 157 | */ | |
| 158 | public Count build() { | |
| 159 | 32 | return new Count(this); |
| 160 | } | |
| 161 | ||
| 162 | /** | |
| 163 | * Sets the maximum number of milliseconds to allow the query to run | |
| 164 | * before aborting the request on the server. | |
| 165 | * <p> | |
| 166 | * This method equivalent to {@link #setMaximumTimeMilliseconds(long) | |
| 167 | * setMaximumTimeMilliseconds(timeLimitUnits.toMillis(timeLimit)}. | |
| 168 | * </p> | |
| 169 | * | |
| 170 | * @param timeLimit | |
| 171 | * The new maximum amount of time to allow the query to run. | |
| 172 | * @param timeLimitUnits | |
| 173 | * The units for the maximum amount of time to allow the | |
| 174 | * query to run. | |
| 175 | * | |
| 176 | * @return This {@link Builder} for method call chaining. | |
| 177 | * | |
| 178 | * @since MongoDB 2.6 | |
| 179 | */ | |
| 180 | public Builder maximumTime(final long timeLimit, | |
| 181 | final TimeUnit timeLimitUnits) { | |
| 182 | 1 | return setMaximumTimeMilliseconds(timeLimitUnits |
| 183 | .toMillis(timeLimit)); | |
| 184 | } | |
| 185 | ||
| 186 | /** | |
| 187 | * Sets the value of the query document to the new value. | |
| 188 | * <p> | |
| 189 | * This method delegates to {@link #setQuery(DocumentAssignable)}. | |
| 190 | * </p> | |
| 191 | * | |
| 192 | * @param query | |
| 193 | * The new value for the query document. | |
| 194 | * @return This builder for chaining method calls. | |
| 195 | */ | |
| 196 | public Builder query(final DocumentAssignable query) { | |
| 197 | 23 | return setQuery(query); |
| 198 | } | |
| 199 | ||
| 200 | /** | |
| 201 | * Sets the preference for the set of servers to retrieve the results | |
| 202 | * from. | |
| 203 | * <p> | |
| 204 | * This method delegates to {@link #setReadPreference(ReadPreference)}. | |
| 205 | * </p> | |
| 206 | * | |
| 207 | * @param readPreference | |
| 208 | * The new value for the preference of which server to return | |
| 209 | * the results from. | |
| 210 | * @return This builder for chaining method calls. | |
| 211 | */ | |
| 212 | public Builder readPreference(final ReadPreference readPreference) { | |
| 213 | 23 | return setReadPreference(readPreference); |
| 214 | } | |
| 215 | ||
| 216 | /** | |
| 217 | * Resets the builder back to its initial state for reuse. | |
| 218 | * | |
| 219 | * @return This builder for chaining method calls. | |
| 220 | */ | |
| 221 | public Builder reset() { | |
| 222 | 31 | myQuery = ALL; |
| 223 | 31 | myReadPreference = null; |
| 224 | 31 | myMaximumTimeMilliseconds = 0; |
| 225 | ||
| 226 | 31 | return this; |
| 227 | } | |
| 228 | ||
| 229 | /** | |
| 230 | * Sets the maximum number of milliseconds to allow the query to run | |
| 231 | * before aborting the request on the server. | |
| 232 | * | |
| 233 | * @param maximumTimeMilliseconds | |
| 234 | * The new maximum number of milliseconds to allow the query | |
| 235 | * to run. | |
| 236 | * @return This {@link Builder} for method call chaining. | |
| 237 | * | |
| 238 | * @since MongoDB 2.6 | |
| 239 | */ | |
| 240 | public Builder setMaximumTimeMilliseconds( | |
| 241 | final long maximumTimeMilliseconds) { | |
| 242 | 4 | myMaximumTimeMilliseconds = maximumTimeMilliseconds; |
| 243 | 4 | return this; |
| 244 | } | |
| 245 | ||
| 246 | /** | |
| 247 | * Sets the value of the query document to the new value. | |
| 248 | * | |
| 249 | * @param query | |
| 250 | * The new value for the query document. | |
| 251 | * @return This builder for chaining method calls. | |
| 252 | */ | |
| 253 | public Builder setQuery(final DocumentAssignable query) { | |
| 254 | 26 | myQuery = query.asDocument(); |
| 255 | 26 | return this; |
| 256 | } | |
| 257 | ||
| 258 | /** | |
| 259 | * Sets the preference for the set of servers to retrieve the results | |
| 260 | * from. | |
| 261 | * | |
| 262 | * @param readPreference | |
| 263 | * The new value for the preference of which server to return | |
| 264 | * the results from. | |
| 265 | * @return This builder for chaining method calls. | |
| 266 | */ | |
| 267 | public Builder setReadPreference(final ReadPreference readPreference) { | |
| 268 | 27 | myReadPreference = readPreference; |
| 269 | 27 | return this; |
| 270 | } | |
| 271 | ||
| 272 | } | |
| 273 | } |