com.hazelcast.org.apache.calcite.schema.ScannableTable Maven / Gradle / Ivy
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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,
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* See the License for the specific language governing permissions and
* limitations under the License.
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package com.hazelcast.org.apache.calcite.schema;
import com.hazelcast.org.apache.calcite.DataContext;
import com.hazelcast.org.apache.calcite.linq4j.Enumerable;
import com.hazelcast.org.checkerframework.checker.nullness.qual.Nullable;
/**
* Table that can be scanned without creating an intermediate relational
* expression.
*/
public interface ScannableTable extends Table {
/** Returns an enumerator over the rows in this Table. Each row is represented
* as an array of its column values. */
Enumerable<@Nullable Object[]> scan(DataContext root);
}
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