org.apache.hudi.org.apache.hadoop.hbase.types.StructBuilder Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.hadoop.hbase.types;
import java.util.ArrayList;
import java.util.List;
import org.apache.yetus.audience.InterfaceAudience;
/**
* A helper for building {@link Struct} instances.
*/
@InterfaceAudience.Public
public class StructBuilder {
protected final List> fields = new ArrayList<>();
/**
* Create an empty {@code StructBuilder}.
*/
public StructBuilder() {}
/**
* Append {@code field} to the sequence of accumulated fields.
*/
public StructBuilder add(DataType field) {
fields.add(field);
return this;
}
/**
* Retrieve the {@link Struct} represented by {@code this}.
*/
public Struct toStruct() {
return new Struct(fields.toArray(new DataType[fields.size()]));
}
/**
* Reset the sequence of accumulated fields.
*/
public StructBuilder reset() {
fields.clear();
return this;
}
}