TableAliasGenerator.java

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// 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
//
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package org.apache.doris.common;

import org.apache.doris.analysis.Analyzer;

import com.google.common.base.Preconditions;

public class TableAliasGenerator extends AliasGenerator {
    private static final String DEFAULT_TBL_ALIAS_PREFIX = "$a$";

    public TableAliasGenerator(Analyzer analyzer, String prefix) {
        Preconditions.checkNotNull(analyzer);
        aliasPrefix = prefix != null ? prefix : DEFAULT_TBL_ALIAS_PREFIX;
        usedAliases.addAll(analyzer.getAliases());
        // Analyzer currentAnalyzer = analyzer;
        // do {
        //  usedAliases.addAll(currentAnalyzer.getAliases());
        //  usedAliases.addAll(currentAnalyzer.getLocalViews().keySet());
        //  currentAnalyzer = currentAnalyzer.getParentAnalyzer();
        // } while (currentAnalyzer != null);
    }
}