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GraphqL Java

There is a newer version: 230521-nf-execution

package graphql.language;


import graphql.util.TraversalControl;
import graphql.util.TraverserContext;

import java.util.Collections;
import java.util.List;

public class NullValue extends AbstractNode implements Value {

    public static final NullValue Null = new NullValue();

    private NullValue() {
    }

    @Override
    public List getChildren() {
        return Collections.emptyList();
    }

    @Override
    public boolean isEqualTo(Node o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        return true;

    }

    @Override
    public NullValue deepCopy() {
        return this;
    }

    @Override
    public String toString() {
        return "NullValue{" +
                '}';
    }

    @Override
    public TraversalControl accept(TraverserContext context, NodeVisitor visitor) {
        return visitor.visitNullValue(this, context);
    }
}