Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 1 | package org.onlab.onos.store.service; |
| 2 | |
| 3 | import java.util.Collections; |
| 4 | import java.util.List; |
| 5 | |
| 6 | import com.google.common.collect.Lists; |
| 7 | |
| 8 | /** |
| 9 | * Collection of read requests to be submitted as one batch. |
| 10 | */ |
Madan Jampani | 23af4fc | 2014-11-12 00:54:18 -0800 | [diff] [blame^] | 11 | public final class BatchReadRequest { |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 12 | |
Madan Jampani | 23af4fc | 2014-11-12 00:54:18 -0800 | [diff] [blame^] | 13 | private final List<ReadRequest> readRequests; |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 14 | |
Madan Jampani | 23af4fc | 2014-11-12 00:54:18 -0800 | [diff] [blame^] | 15 | /** |
| 16 | * Creates a new BatchReadRequest object from the specified list of read requests. |
| 17 | * @param readRequests read requests. |
| 18 | * @return BatchReadRequest object. |
| 19 | */ |
| 20 | public static BatchReadRequest create(List<ReadRequest> readRequests) { |
| 21 | return new BatchReadRequest(readRequests); |
| 22 | } |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 23 | |
Madan Jampani | 23af4fc | 2014-11-12 00:54:18 -0800 | [diff] [blame^] | 24 | private BatchReadRequest(List<ReadRequest> readRequests) { |
| 25 | this.readRequests = Collections.unmodifiableList(readRequests); |
| 26 | } |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 27 | |
Madan Jampani | 23af4fc | 2014-11-12 00:54:18 -0800 | [diff] [blame^] | 28 | /** |
| 29 | * Returns the number of requests in this batch. |
| 30 | * @return size of request batch. |
| 31 | */ |
| 32 | public int batchSize() { |
| 33 | return readRequests.size(); |
| 34 | } |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 35 | |
Madan Jampani | 23af4fc | 2014-11-12 00:54:18 -0800 | [diff] [blame^] | 36 | /** |
| 37 | * Returns the requests in this batch as a list. |
| 38 | * @return list of read requests |
| 39 | */ |
| 40 | public List<ReadRequest> getAsList() { |
| 41 | return readRequests; |
| 42 | } |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 43 | |
Madan Jampani | 23af4fc | 2014-11-12 00:54:18 -0800 | [diff] [blame^] | 44 | /** |
| 45 | * Builder for BatchReadRequest. |
| 46 | */ |
| 47 | public static class Builder { |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 48 | |
Madan Jampani | 23af4fc | 2014-11-12 00:54:18 -0800 | [diff] [blame^] | 49 | private final List<ReadRequest> readRequests = Lists.newLinkedList(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 50 | |
Madan Jampani | 23af4fc | 2014-11-12 00:54:18 -0800 | [diff] [blame^] | 51 | /** |
| 52 | * Append a get request. |
| 53 | * @param tableName table name |
| 54 | * @param key key to fetch. |
| 55 | * @return this Builder |
| 56 | */ |
| 57 | public Builder get(String tableName, String key) { |
| 58 | readRequests.add(new ReadRequest(tableName, key)); |
| 59 | return this; |
| 60 | } |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 61 | |
Madan Jampani | 23af4fc | 2014-11-12 00:54:18 -0800 | [diff] [blame^] | 62 | /** |
| 63 | * Builds a BatchReadRequest. |
| 64 | * @return BatchReadRequest |
| 65 | */ |
| 66 | public BatchReadRequest build() { |
| 67 | return new BatchReadRequest(readRequests); |
| 68 | } |
| 69 | } |
| 70 | } |