AssertNumRowsElement.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.nereids.trees.expressions;

import org.apache.doris.nereids.util.Utils;

import java.util.Objects;

/**
 * Number of rows returned by inspection in subquery.
 */
public class AssertNumRowsElement {
    /**
     * Assertion type.
     */
    public enum Assertion {
        EQ, // val1 == val2
        NE, // val1 != val2
        LT, // val1 < val2
        LE, // val1 <= val2
        GT, // val1 > val2
        GE; // val1 >= val2
    }

    private final long desiredNumOfRows;
    private final String subqueryString;
    private final Assertion assertion;

    public AssertNumRowsElement(long desiredNumOfRows, String subqueryString,
            Assertion assertion) {
        this.desiredNumOfRows = desiredNumOfRows;
        this.subqueryString = subqueryString;
        this.assertion = assertion;
    }

    public long getDesiredNumOfRows() {
        return desiredNumOfRows;
    }

    public String getSubqueryString() {
        return subqueryString;
    }

    public Assertion getAssertion() {
        return assertion;
    }

    @Override
    public String toString() {
        return Utils.toSqlString("AssertNumRowsElement",
                "desiredNumOfRows",
                Long.toString(desiredNumOfRows),
                "assertion", assertion);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        AssertNumRowsElement that = (AssertNumRowsElement) o;
        return this.desiredNumOfRows == that.getDesiredNumOfRows()
                && this.subqueryString.equals(that.getSubqueryString())
                && this.assertion.equals(that.getAssertion());
    }

    @Override
    public int hashCode() {
        return Objects.hash(desiredNumOfRows, subqueryString, assertion);
    }
}