tech.ydb.yoj.databind.expression.AndExpr Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of yoj-databind Show documentation

Core data-binding logic used by YOJ (YDB ORM for Java) to convert between Java objects and database rows (or anything representable by a Java Map, really).

The newest version!

package tech.ydb.yoj.databind.expression;

import com.google.common.collect.ImmutableList;
import lombok.AllArgsConstructor;
import lombok.NonNull;
import lombok.Value;
import tech.ydb.yoj.databind.schema.Schema;

import java.util.List;
import java.util.function.UnaryOperator;
import java.util.stream.Stream;

import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;

@Value
@AllArgsConstructor
public class AndExpr implements FilterExpression {
    @NonNull
    Schema schema;

    @NonNull
    List> children;

    @Override
    public Type getType() {
        return Type.AND;
    }

    @Override
    public  V visit(@NonNull Visitor visitor) {
        return visitor.visitAndExpr(this);
    }

    @Override
    public FilterExpression and(@NonNull FilterExpression other) {
        if (other instanceof AndExpr) {
            return new AndExpr<>(schema, ImmutableList.>builder()
                    .addAll(children)
                    .addAll(((AndExpr) other).children)
                    .build());
        } else {
            return new AndExpr<>(schema, ImmutableList.>builder()
                    .addAll(children)
                    .add(other)
                    .build());
        }
    }

    @Override
    public Stream> stream() {
        return children.stream();
    }

    @Override
    public  AndExpr forSchema(@NonNull Schema dstSchema, @NonNull UnaryOperator pathTransformer) {
        return new AndExpr<>(dstSchema, this.children.stream()
                .map(expr -> expr.forSchema(dstSchema, pathTransformer))
                .collect(toList()));
    }

    @Override
    public String toString() {
        return stream().map(Object::toString).collect(joining(") AND (", "(", ")"));
    }
}