### Crear un Engine { #create-an-engine }

Un `engine` de SQLModel (en el fondo, realmente es un `engine` de SQLAlchemy) es lo que **mantiene las conexiones** a la base de datos.

Tendrías **un solo objeto `engine`** para todo tu código para conectar a la misma base de datos.

    /** The expression used to match documents for boosting */
    private String matchExpression;

    /** The script engine type used for expression evaluation */
    private final String scriptType;

    /**
     * Default constructor that creates a DocBoostMatcher with default script type.
     * Uses the default script engine as defined in Constants.DEFAULT_SCRIPT.
     */
    public DocBoostMatcher() {

    }

    /**
     * Sets the name of the search engine cluster.
     *
     * @param clusterName the cluster name
     */
    public void setClusterName(final String clusterName) {
        this.clusterName = clusterName;
    }

    /**
     * Gets information about the search engine.
     *
     * @return the engine information

     * The template is evaluated using the specified script engine with the value and context.
     *
     * @param dataMap the data map to modify
     * @param key the key to store the processed value under
     * @param value the original value to process
     * @param template the template script to evaluate
     * @param scriptType the type of script engine to use
     */

import org.jetbrains.dokka.gradle.DokkaExtension;
import org.jetbrains.dokka.gradle.DokkaPlugin;
import org.jetbrains.dokka.gradle.engine.parameters.DokkaSourceLinkSpec;
import org.jetbrains.dokka.gradle.engine.parameters.DokkaSourceSetSpec;
import org.jetbrains.dokka.gradle.engine.plugins.DokkaHtmlPluginParameters;
import org.jetbrains.dokka.gradle.tasks.DokkaGeneratePublicationTask;

import java.io.File;
import java.net.URI;

		case "startTs":
			z.StartTime, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "StartTime")
				return
			}
		case "stopTs":
			z.EndTime, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "EndTime")
				return
			}
		case "status":
			{
				var zb0002 uint8
				zb0002, err = dc.ReadUint8()
				if err != nil {
					err = msgp.WrapError(err, "Status")

# Add license headers
mvn license:format
```

## Tech Stack

- **Web Framework**: LastaFlute (MVC framework)
- **DI Container**: Lasta Di
- **Data Access**: DBFlute (type-safe ORM for OpenSearch)
- **Search Engine**: OpenSearch
- **App Server**: Embedded Tomcat
- **Crawler**: fess-crawler library
- **Scheduler**: Lasta Job

## Key Directories

```
src/main/java/org/codelibs/fess/

                                    <tr>
                                        <th><la:message key="labels.joblog_endTime"/></th>
                                        <td>${f:h(endTime)}<la:hidden property="endTime"/></td>
                                    </tr>
                                    <tr>
                                        <th><la:message key="labels.joblog_scriptType"/></th>

        return childUrlSet.isEmpty() ? null : childUrlSet;
    }

    /**
     * Retrieves child URLs for a given document ID from the search engine index.
     * This method queries the search engine for child documents and extracts their URLs.
     *
     * @param searchEngineClient the search engine client to query
     * @param id the parent document ID to find children for

### Create an Engine { #create-an-engine }

A SQLModel `engine` (underneath it's actually a SQLAlchemy `engine`) is what **holds the connections** to the database.

You would have **one single `engine` object** for all your code to connect to the same database.