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gcloud-java-bigquery/src/main/java/com/google/gcloud/bigquery/QueryResult.java
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| /* | ||
| * Copyright 2015 Google Inc. All Rights Reserved. | ||
| * | ||
| * 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. | ||
| */ | ||
|
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| package com.google.gcloud.bigquery; | ||
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| import com.google.common.base.MoreObjects; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.gcloud.PageImpl; | ||
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| import java.util.List; | ||
| import java.util.Objects; | ||
|
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| public class QueryResult extends PageImpl<List<FieldValue>> { | ||
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| private static final long serialVersionUID = -4831062717210349818L; | ||
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| private final boolean cacheHit; | ||
| private final Schema schema; | ||
| private final long totalRows; | ||
| private final long totalBytesProcessed; | ||
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| interface QueryResultsPageFetcher extends PageImpl.NextPageFetcher<List<FieldValue>> { | ||
| @Override | ||
| QueryResult nextPage(); | ||
| } | ||
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| static final class Builder { | ||
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| private NextPageFetcher<List<FieldValue>> pageFetcher; | ||
| private String cursor; | ||
| private Iterable<List<FieldValue>> results; | ||
| private boolean cacheHit; | ||
| private Schema schema; | ||
| private long totalRows; | ||
| private long totalBytesProcessed; | ||
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| private Builder() {} | ||
|
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| Builder cacheHit(boolean cacheHit) { | ||
| this.cacheHit = cacheHit; | ||
| return this; | ||
| } | ||
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| Builder schema(Schema schema) { | ||
| this.schema = schema; | ||
| return this; | ||
| } | ||
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| Builder totalBytesProcessed(long totalBytesProcessed) { | ||
| this.totalBytesProcessed = totalBytesProcessed; | ||
| return this; | ||
| } | ||
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| Builder totalRows(long totalRows) { | ||
| this.totalRows = totalRows; | ||
| return this; | ||
| } | ||
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| Builder pageFetcher(NextPageFetcher<List<FieldValue>> pageFetcher) { | ||
| this.pageFetcher = pageFetcher; | ||
| return this; | ||
| }; | ||
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| Builder cursor(String cursor) { | ||
| this.cursor = cursor; | ||
| return this; | ||
| }; | ||
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| Builder results(Iterable<List<FieldValue>> results) { | ||
| this.results = results; | ||
| return this; | ||
| }; | ||
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| QueryResult build() { | ||
| return new QueryResult(this); | ||
| } | ||
| } | ||
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| private QueryResult(Builder builder) { | ||
| super(builder.pageFetcher, builder.cursor, builder.results != null ? builder.results | ||
| : ImmutableList.<List<FieldValue>>of()); | ||
| this.cacheHit = builder.cacheHit; | ||
| this.schema = builder.schema; | ||
| this.totalBytesProcessed = builder.totalBytesProcessed; | ||
| this.totalRows = builder.totalRows; | ||
| } | ||
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| /** | ||
| * Returns whether the query result was fetched from the query cache. | ||
| * | ||
| * @see <a href="https://cloud.google.com/bigquery/querying-data#querycaching">Query Caching</a> | ||
| */ | ||
| public boolean cacheHit() { | ||
| return cacheHit; | ||
| } | ||
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| /** | ||
| * Returns the schema of the results. | ||
| */ | ||
| public Schema schema() { | ||
| return schema; | ||
| } | ||
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| /** | ||
| * Returns the total number of bytes processed for the query. If this query was a dry run, this is | ||
| * the number of bytes that would be processed if the query were run. | ||
| */ | ||
| public long totalBytesProcessed() { | ||
| return totalBytesProcessed; | ||
| } | ||
|
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| /** | ||
| * Returns the total number of rows in the complete query result set, which can be more than the | ||
| * number of rows in the first page of results returned by {@link #values()}. Returns {@code 0} | ||
| * if the query was a dry run. | ||
| */ | ||
| public long totalRows() { | ||
| return totalRows; | ||
| } | ||
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| @Override | ||
| public String toString() { | ||
| return MoreObjects.toStringHelper(this) | ||
| .add("rows", values()) | ||
| .add("cacheHit", cacheHit) | ||
| .add("schema", schema) | ||
| .add("totalBytesProcessed", totalBytesProcessed) | ||
| .add("totalRows", totalRows) | ||
| .add("cursor", nextPageCursor()) | ||
| .toString(); | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash(super.hashCode(), cacheHit, schema, totalBytesProcessed, totalRows); | ||
| } | ||
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| @Override | ||
| public boolean equals(Object obj) { | ||
| if (this == obj) { | ||
| return true; | ||
| } | ||
| if (obj == null || getClass() != obj.getClass()) { | ||
| return false; | ||
| } | ||
| QueryResult response = (QueryResult) obj; | ||
| return Objects.equals(nextPageCursor(), response.nextPageCursor()) | ||
| && Objects.equals(values(), response.values()) | ||
| && Objects.equals(schema, response.schema) | ||
| && Objects.equals(totalRows, response.totalRows) | ||
| && Objects.equals(totalBytesProcessed, response.totalBytesProcessed) | ||
| && Objects.equals(cacheHit, response.cacheHit); | ||
| } | ||
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| static Builder builder() { | ||
| return new Builder(); | ||
| } | ||
| } |
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