forked from apache/iceberg
/
SparkInputPartition.java
99 lines (86 loc) · 3.13 KB
/
SparkInputPartition.java
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/*
* 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.iceberg.spark.source;
import java.io.Serializable;
import org.apache.iceberg.ScanTask;
import org.apache.iceberg.ScanTaskGroup;
import org.apache.iceberg.Schema;
import org.apache.iceberg.SchemaParser;
import org.apache.iceberg.Table;
import org.apache.iceberg.types.Types;
import org.apache.spark.broadcast.Broadcast;
import org.apache.spark.sql.catalyst.InternalRow;
import org.apache.spark.sql.connector.read.HasPartitionKey;
import org.apache.spark.sql.connector.read.InputPartition;
class SparkInputPartition implements InputPartition, HasPartitionKey, Serializable {
private final Types.StructType groupingKeyType;
private final ScanTaskGroup<?> taskGroup;
private final Broadcast<Table> tableBroadcast;
private final String branch;
private final String expectedSchemaString;
private final boolean caseSensitive;
private final transient String[] preferredLocations;
private transient Schema expectedSchema = null;
SparkInputPartition(
Types.StructType groupingKeyType,
ScanTaskGroup<?> taskGroup,
Broadcast<Table> tableBroadcast,
String branch,
String expectedSchemaString,
boolean caseSensitive,
String[] preferredLocations) {
this.groupingKeyType = groupingKeyType;
this.taskGroup = taskGroup;
this.tableBroadcast = tableBroadcast;
this.branch = branch;
this.expectedSchemaString = expectedSchemaString;
this.caseSensitive = caseSensitive;
this.preferredLocations = preferredLocations;
}
@Override
public String[] preferredLocations() {
return preferredLocations;
}
@Override
public InternalRow partitionKey() {
return new StructInternalRow(groupingKeyType).setStruct(taskGroup.groupingKey());
}
@SuppressWarnings("unchecked")
public <T extends ScanTask> ScanTaskGroup<T> taskGroup() {
return (ScanTaskGroup<T>) taskGroup;
}
public <T extends ScanTask> boolean allTasksOfType(Class<T> javaClass) {
return taskGroup.tasks().stream().allMatch(javaClass::isInstance);
}
public Table table() {
return tableBroadcast.value();
}
public String branch() {
return branch;
}
public boolean isCaseSensitive() {
return caseSensitive;
}
public Schema expectedSchema() {
if (expectedSchema == null) {
this.expectedSchema = SchemaParser.fromJson(expectedSchemaString);
}
return expectedSchema;
}
}