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• 1.10.3
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• EntityUtil.java

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com.landawn.abacus.core.EntityUtil Maven / Gradle / Ivy

/*
 * Copyright (c) 2015, Haiyang Li.
 * 
 * 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.
 */

package com.landawn.abacus.core;

import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;

import com.landawn.abacus.DirtyMarker;
import com.landawn.abacus.annotation.Internal;
import com.landawn.abacus.metadata.EntityDefinition;
import com.landawn.abacus.metadata.Property;
import com.landawn.abacus.util.N;
import com.landawn.abacus.util.Objectory;

// TODO: Auto-generated Javadoc
/**
 *
 * @author Haiyang Li
 * @since 0.8
 */
@Internal
public final class EntityUtil {

    private static final String DOUBLE_BRACKET = "{}";

    private EntityUtil() {
        // no instance.
    }

    /**
     *
     * @param 
     * @param entityDef
     * @param entity
     * @return
     */
    public static  T clone(EntityDefinition entityDef, T entity) {
        if (entity == null) {
            return null;
        }

        Collection propNames = EntityManagerUtil.getSignedPropNames(entityDef, entity);

        return copy(entityDef, entity, propNames, true);
    }

    /**
     *
     * @param 
     * @param entityDef
     * @param entity
     * @return
     */
    public static  T copy(EntityDefinition entityDef, T entity) {
        return copy(entityDef, entity, null);
    }

    /**
     *
     * @param 
     * @param entityDef
     * @param entity
     * @param propNames
     * @return
     */
    public static  T copy(EntityDefinition entityDef, T entity, Collection propNames) {
        if (entity == null) {
            return null;
        }

        if (propNames == null) {
            propNames = EntityManagerUtil.getSignedPropNames(entityDef, entity);
        }

        return copy(entityDef, entity, propNames, false);
    }

    /**
     *
     * @param 
     * @param entityDef
     * @param entity
     * @param propNames
     * @param isDeepCopy
     * @return
     */
    private static  T copy(EntityDefinition entityDef, T entity, Collection propNames, boolean isDeepCopy) {
        @SuppressWarnings("unchecked")
        T copy = (T) N.newEntity(entity.getClass(), entityDef.getName());
        MapEntity mapEntity = (entity instanceof MapEntity) ? (MapEntity) entity : null;
        MapEntity copyOfMapEnity = (mapEntity == null) ? null : (MapEntity) copy;
        Property prop = null;
        Object propValue = null;
        EntityDefinition columnEntityDef = null;

        for (String propName : propNames) {
            prop = entityDef.getProperty(propName);

            if (mapEntity == null) {
                propValue = EntityManagerUtil.getPropValueByMethod(entity, prop);
            } else {
                propValue = mapEntity.get(propName);
            }

            if (isDeepCopy && (propValue != null) && prop.getColumnType().isEntity()) {
                columnEntityDef = prop.getColumnEntityDef();

                if (prop.isCollection() && propValue instanceof Collection) {
                    @SuppressWarnings("unchecked")
                    Collection