CurrentTime.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.functions.scalar;

import org.apache.doris.catalog.FunctionSignature;
import org.apache.doris.nereids.trees.expressions.functions.AlwaysNotNullable;
import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSignature;
import org.apache.doris.nereids.trees.expressions.shape.LeafExpression;
import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
import org.apache.doris.nereids.types.TimeV2Type;

import com.google.common.collect.ImmutableList;

import java.util.List;

/**
 * ScalarFunction 'current_time'. This class is generated by GenerateFunction.
 */
public class CurrentTime extends ScalarFunction
        implements LeafExpression, ExplicitlyCastableSignature, AlwaysNotNullable {

    public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
            FunctionSignature.ret(TimeV2Type.INSTANCE).args()
    );

    /**
     * constructor with 0 argument.
     */
    public CurrentTime() {
        super("current_time");
    }

    @Override
    public List<FunctionSignature> getSignatures() {
        return SIGNATURES;
    }

    @Override
    public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) {
        return visitor.visitCurrentTime(this, context);
    }

    @Override
    public boolean isDeterministic() {
        return false;
    }
}