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/**
* Copyright (c) 2024 TigerGraph Inc.
*
* 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.tigergraph.spark.read;
import com.tigergraph.spark.TigerGraphConnection;
import org.apache.spark.sql.connector.read.ScanBuilder;
/**
* An interface for building the {@link TigerGraphScan}. Implementations can mixin
* SupportsPushDownXYZ interfaces to do operator pushdown, and keep the operator pushdown result in
* the returned {@link TigerGraphScan}. When pushing down operators, Spark pushes down filters
* first, then pushes down aggregates or applies column pruning.
*/
public class TigerGraphScanBuilder implements ScanBuilder {
private final TigerGraphConnection conn;
private final TigerGraphResultAccessor accessor;
public TigerGraphScanBuilder(TigerGraphConnection conn, TigerGraphResultAccessor accessor) {
this.conn = conn;
this.accessor = accessor;
}
@Override
public TigerGraphScan build() {
return new TigerGraphScan(conn, accessor);
}
}