com.guicedee.services.hibernate.PersistenceByteArrayConsumer Maven / Gradle / Ivy

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JPMS Module-Info's for a few of the Jakarta Libraries just until they add them in themselves
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package com.guicedee.services.hibernate;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.util.BeanUtil;
import com.guicedee.guicedinjection.interfaces.ObjectBinderKeys;
import com.guicedee.logger.LogFactory;

import io.github.classgraph.Resource;
import io.github.classgraph.ResourceList;
import org.hibernate.jpa.boot.internal.ParsedPersistenceXmlDescriptor;
import org.hibernate.jpa.boot.internal.ParsedPersistenceXmlDescriptorMixin;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.XML;

import java.lang.reflect.Field;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * A consumer that reads persistence.xml files into PersistenceUnit objects
 */
public class PersistenceByteArrayConsumer
		implements ResourceList.ByteArrayConsumer
{
	/**
	 * The logger
	 */
	private static final Logger log = LogFactory.getLog("PersistenceByteArrayConsumer");

	/**
	 * Object mapper reader for Persistence XML Files
	 */
	private static final ObjectMapper om = new ObjectMapper();

	static
	{
		om.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
		om.configure(DeserializationFeature.FAIL_ON_IGNORED_PROPERTIES, false);
		om.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
		om.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

		om.addMixIn(ParsedPersistenceXmlDescriptor.class, ParsedPersistenceXmlDescriptorMixin.class);

		om.registerModule(new SimpleModule()
						.addDeserializer(Properties.class,new StringToPropertiesDeserializer()));

	}

	/**
	 * Method accept ...
	 *
	 * @param resource
	 * 		of type Resource
	 * @param byteArray
	 * 		of type byte[]
	 */
	@Override
	public void accept(Resource resource, byte[] byteArray)
	{
		Set units = getPersistenceUnitsFromFile(byteArray);
		for (Iterator iterator = units.iterator(); iterator.hasNext(); )
		{
			ParsedPersistenceXmlDescriptor unit = iterator.next();
			Properties props = unit.getProperties();
			for (Object property : unit.getProperties().keySet())
			{
				String propName =property.toString();
				if(propName.equalsIgnoreCase(PersistenceFileHandler.getIgnorePersistenceUnitProperty()) &&
				    "true".equalsIgnoreCase(props.get(property).toString()))
				{

					iterator.remove();
				}
			}
			PersistenceFileHandler.getPersistenceUnits()
			                      .add(unit);
		}
		resource.close();
	}

	/**
	 * Gets all the persistence files
	 *
	 * @param persistenceFile
	 * 		The persistence file bytes
	 *
	 * @return A set of persistence units
	 */
	private Set getPersistenceUnitsFromFile(byte[] persistenceFile)
	{
		Set units = new LinkedHashSet<>();
		try
		{
			String xml = new String(persistenceFile);
			JSONObject jsonObj = XML.toJSONObject(xml);
			JSONObject pers = jsonObj.getJSONObject("persistence");
			try {
				JSONObject persU = pers.getJSONObject("persistence-unit");
				ParsedPersistenceXmlDescriptor p =new ParsedPersistenceXmlDescriptor(null);
				try {
					ParsedPersistenceXmlDescriptorMixin descriptor = new ParsedPersistenceXmlDescriptorMixin(null);
					ParsedPersistenceXmlDescriptorMixin pp = om.readerForUpdating(descriptor).readValue(persU.toString());
					for (Field declaredField : pp.getClass().getDeclaredFields()) {
						try {
							declaredField.setAccessible(true);
							Field setField = p.getClass().getDeclaredField(declaredField.getName());
							setField.setAccessible(true);
							setField.set(p, declaredField.get(pp));
						}catch (Throwable T)
						{
							T.printStackTrace();
						}
					}
					units.add(p);
				} catch (JsonProcessingException e) {
					log.log(Level.SEVERE, "Error streaming into Persistence Unit", e);
				}
			}catch (JSONException e)
			{
				//try as array
				JSONArray persU = pers.getJSONArray("persistence-unit");
				persU.forEach(a->{
					try {
						ParsedPersistenceXmlDescriptorMixin p1 = om.readValue(a.toString(), ParsedPersistenceXmlDescriptorMixin.class);
						ParsedPersistenceXmlDescriptor p =new ParsedPersistenceXmlDescriptor(null);
						for (Field declaredField : p1.getClass().getDeclaredFields()) {
							try {
								declaredField.setAccessible(true);
								Field setField = p.getClass().getDeclaredField(declaredField.getName());
								setField.setAccessible(true);
								setField.set(p, declaredField.get(p1));
							}catch (Throwable T)
							{
								T.printStackTrace();
							}
						}
						units.add(p);
					} catch (JsonProcessingException e1) {
						log.log(Level.SEVERE, "Error streaming into Persistence Unit", e1);
					}
				});
			}
		}
		catch (Throwable t)
		{
			log.log(Level.SEVERE, "Error streaming", t);
		}
		return units;
	}
}