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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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package com.hazelcast.org.apache.calcite.sql.validate;

/** One of the inputs of a {@link SqlValidatorScope}.
 *
 * 

Most commonly, it is an item in a FROM clause, and consists of a namespace * (the columns it provides), and optional name (table alias), and ordinal * within the FROM clause. */ class ScopeChild { final int ordinal; final String name; final SqlValidatorNamespace namespace; final boolean nullable; /** Creates a ScopeChild. * * @param ordinal Ordinal of child within parent scope * @param name Table alias * @param namespace Namespace of child * @param nullable Whether fields of the child are nullable when seen from the * parent, due to outer joins */ ScopeChild(int ordinal, String name, SqlValidatorNamespace namespace, boolean nullable) { this.ordinal = ordinal; this.name = name; this.namespace = namespace; this.nullable = nullable; } @Override public String toString() { return ordinal + ": " + name + ": " + namespace + (nullable ? " (nullable)" : ""); } }





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