ArrayMatchAny.java

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package org.apache.doris.nereids.trees.expressions.functions.scalar;

import org.apache.doris.catalog.FunctionSignature;
import org.apache.doris.nereids.exceptions.AnalysisException;
import org.apache.doris.nereids.trees.expressions.Expression;
import org.apache.doris.nereids.trees.expressions.functions.AlwaysNullable;
import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
import org.apache.doris.nereids.types.ArrayType;
import org.apache.doris.nereids.types.BooleanType;

import com.google.common.collect.ImmutableList;

import java.util.List;

/**
 * ScalarFunction 'array_match_any'.
 */
public class ArrayMatchAny extends ScalarFunction
        implements HighOrderFunction, AlwaysNullable {

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

    /**
     * constructor with arguments.
     * array_match_any(lambda, a1, ...) = array_match_any(a1, array_map(lambda, a1, ...))
     */
    public ArrayMatchAny(Expression arg) {
        super("array_match_any", arg instanceof Lambda ? new ArrayMap(arg) : arg);
    }

    @Override
    public ArrayMatchAny withChildren(List<Expression> children) {
        if (children.size() != 1) {
            throw new AnalysisException(
                    String.format("The number of args of %s must be 1 but is %d", getName(), children.size()));
        }
        return new ArrayMatchAny(children.get(0));
    }

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

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