RewriteEncryptKeyRule.java

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.rewrite;

import org.apache.doris.analysis.Analyzer;
import org.apache.doris.analysis.EncryptKeyRef;
import org.apache.doris.analysis.Expr;
import org.apache.doris.analysis.LiteralExpr;
import org.apache.doris.catalog.EncryptKey;
import org.apache.doris.catalog.Type;
import org.apache.doris.common.AnalysisException;

/**
 * rewrite EncryptKey to LiteralExpr
 */
public class RewriteEncryptKeyRule implements ExprRewriteRule {

    public static ExprRewriteRule INSTANCE = new RewriteEncryptKeyRule();

    @Override
    public Expr apply(Expr expr, Analyzer analyzer, ExprRewriter.ClauseType clauseType) throws AnalysisException {
        if (expr instanceof EncryptKeyRef) {
            // rewrite encryptKey to stringLiteral
            EncryptKey encryptKey = ((EncryptKeyRef) expr).getEncryptKey();
            LiteralExpr literalExpr = LiteralExpr.create(encryptKey.getKeyString(), Type.VARCHAR);
            return literalExpr;
        }
        return expr;
    }
}