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Java idiomatic client for Google Cloud BigQuery.
/*
* Copyright 2015 Google LLC
*
* 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.google.cloud.bigquery;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.base.MoreObjects;
import java.io.Serializable;
import java.util.Objects;
/**
* Base class for Google BigQuery format options. These class define the format of external data
* used by BigQuery, for either federated tables or load jobs.
*/
public class FormatOptions implements Serializable {
static final String CSV = "CSV";
static final String JSON = "NEWLINE_DELIMITED_JSON";
static final String DATASTORE_BACKUP = "DATASTORE_BACKUP";
static final String AVRO = "AVRO";
private static final long serialVersionUID = -443376052020423691L;
private final String type;
FormatOptions(String type) {
this.type = type;
}
/**
* Returns the external data format, as a string.
*/
public String getType() {
return type;
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this).add("format", type).toString();
}
@Override
public int hashCode() {
return Objects.hash(type);
}
@Override
public boolean equals(Object obj) {
return obj == this
|| obj != null
&& obj.getClass().equals(FormatOptions.class)
&& Objects.equals(type, ((FormatOptions) obj).getType());
}
/**
* Default options for CSV format.
*/
public static CsvOptions csv() {
return CsvOptions.newBuilder().build();
}
/**
* Default options for NEWLINE_DELIMITED_JSON format.
*/
public static FormatOptions json() {
return new FormatOptions(JSON);
}
/**
* Default options for DATASTORE_BACKUP format.
*/
public static FormatOptions datastoreBackup() {
return DatastoreBackupOptions.newBuilder().build();
}
/**
* Default options for AVRO format.
*/
public static FormatOptions avro() {
return new FormatOptions(AVRO);
}
/**
* Default options for the provided format.
*/
public static FormatOptions of(String format) {
if (checkNotNull(format).equals(CSV)) {
return csv();
} else if (format.equals(DATASTORE_BACKUP)) {
return datastoreBackup();
}
return new FormatOptions(format);
}
}