net.binis.codegen.jackson.CodeProxyBeanDeserializer Maven / Gradle / Ivy

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package net.binis.codegen.jackson;

/*-
 * #%L
 * code-generator-jackson
 * %%
 * Copyright (C) 2021 - 2024 Binis Belev
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.ContextualDeserializer;
import com.fasterxml.jackson.databind.deser.ResolvableDeserializer;
import com.fasterxml.jackson.databind.deser.SettableBeanProperty;
import com.fasterxml.jackson.databind.deser.impl.ObjectIdReader;
import com.fasterxml.jackson.databind.jsontype.TypeDeserializer;
import com.fasterxml.jackson.databind.type.LogicalType;
import com.fasterxml.jackson.databind.util.AccessPattern;
import com.fasterxml.jackson.databind.util.NameTransformer;
import lombok.val;
import net.binis.codegen.exception.ValidationFormException;
import net.binis.codegen.objects.Pair;
import net.binis.codegen.validation.Validatable;

import java.io.IOException;
import java.util.*;

import static java.util.Objects.isNull;
import static java.util.Objects.nonNull;

public class CodeProxyBeanDeserializer extends JsonDeserializer implements ResolvableDeserializer, ContextualDeserializer {

    private final JsonDeserializer parent;

    private static final ThreadLocal>>> stack = ThreadLocal.withInitial(() -> Pair.of(0, Pair.of(Integer.MAX_VALUE, null)));

    public CodeProxyBeanDeserializer(JsonDeserializer parent) {
        super();
        this.parent = parent;
    }

    @Override
    public T deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
        var pair = stack.get();
        try {
            var level = pair.getKey() + 1;
            pair.key(level);
            var result = parent.deserialize(p, ctxt);
            if (result instanceof Validatable && pair.getValue().getKey() >= level) {
                var list = pair.getValue().getValue();
                if (isNull(list)) {
                    list = new LinkedList<>();
                    pair.getValue().value(list);
                }
                if (pair.getValue().getKey() > level) {
                    list.clear();
                    pair.getValue().key(level);
                }
                list.add((Validatable) result);
            }
            pair.key(--level);

            if (level == 0) {
                var list = pair.getValue().getValue();
                try {
                    if (nonNull(list) && !list.isEmpty() && pair.getValue().getKey() == 1) {
                        if (list.size() == 1) {
                            list.get(0).validate();
                        } else {
                            Map> errors = null;
                            for (var i = 0; i < list.size(); i++) {
                                try {
                                    list.get(i).validate();
                                } catch (ValidationFormException ex) {
                                    if (isNull(errors)) {
                                        errors = new LinkedHashMap<>();
                                    }
                                    var prefix = "[" + i + "].";
                                    for (var e : ex.getErrors().entrySet()) {
                                        var eList = e.getValue();
                                        errors.put(prefix + e.getKey(), eList);
                                        eList.replaceAll(s -> prefix + s);
                                    }
                                }
                            }
                            if (nonNull(errors)) {
                                throw new ValidationFormException(null, errors);
                            }
                        }
                    }
                } finally {
                    stack.remove();
                }
            }
            return result;
        } catch (Exception ex) {
            stack.remove();
            throw ex;
        }
    }

    @Override
    public T deserialize(JsonParser p, DeserializationContext ctxt, T intoValue) throws IOException {
        return parent.deserialize(p, ctxt, intoValue);
    }

    @Override
    public Object deserializeWithType(JsonParser p, DeserializationContext ctxt, TypeDeserializer typeDeserializer) throws
            IOException {
        return parent.deserializeWithType(p, ctxt, typeDeserializer);
    }

    @Override
    public Object deserializeWithType(JsonParser p, DeserializationContext ctxt, TypeDeserializer
            typeDeserializer, T intoValue) throws IOException {
        return parent.deserializeWithType(p, ctxt, typeDeserializer, intoValue);
    }

    @Override
    public JsonDeserializer unwrappingDeserializer(NameTransformer unwrapper) {
        return parent.unwrappingDeserializer(unwrapper);
    }

    @Override
    public JsonDeserializer replaceDelegatee(JsonDeserializer delegatee) {
        return parent.replaceDelegatee(delegatee);
    }

    @Override
    public Class handledType() {
        return parent.handledType();
    }

    @Override
    public LogicalType logicalType() {
        return parent.logicalType();
    }

    @Override
    public boolean isCachable() {
        return parent.isCachable();
    }

    @Override
    public JsonDeserializer getDelegatee() {
        return parent.getDelegatee();
    }

    @Override
    public Collection