## Technology Stack

- **Java**: 21+ (requires Java 21 or higher)
- **Build System**: Maven 3.x
- **DI Container**: LastaFlute DI
- **HTTP Client**: Apache HttpComponents
- **Content Extraction**: Apache Tika, Apache POI, PDFBox
- **Testing**: JUnit 4, UTFlute, Testcontainers
- **Storage Backends**: OpenSearch, Memory-based

## Quick Start

### Prerequisites

- Java 21 or higher
- Maven 3.6 or higher

        assertEquals(value, ftpInfo.toUrl());
        assertEquals("123.123.123.123:21", ftpInfo.getCacheKey());
        assertEquals("123.123.123.123", ftpInfo.getHost());
        assertEquals(21, ftpInfo.getPort());
        assertEquals("/", ftpInfo.getParent());
        assertEquals("test.txt", ftpInfo.getName());

        value = "ftp://123.123.123.123/aaa/../test.txt";

## Technology Stack

- **Java**: 21+ (configured via parent POM)
- **OpenSearch**: Latest (provided scope)
- **Apache Lucene**: Query parsing and text analysis
- **ICU4J**: Unicode text processing and normalization
- **JUnit 4**: Testing framework
- **Maven**: Build and dependency management

## Quick Start

### Prerequisites

- Java 21 or higher
- OpenSearch/Elasticsearch cluster (2.x+ recommended)

     * int port = ftpInfo.getPort(); // 21
     * String parent = ftpInfo.getParent(); // /path/to
     * String name = ftpInfo.getName(); // file.txt
     * String childUrl = ftpInfo.toChildUrl("anotherfile.txt"); // ftp://example.com/path/to/anotherfile.txt
     * }
     * </pre>
     */
    public static class FtpInfo {

        private static final int DEFAULT_FTP_PORT = 21;

        private URI uri;

        assertEquals("太郎", extractData.getValues("dc:creator")[0]);
        assertEquals("かいしゃ", extractData.getValues("extended-properties:Company")[0]);
        assertEquals("2010-07-22T00:21:00Z", extractData.getValues("dcterms:created")[0]);
        assertEquals("1", extractData.getValues("meta:line-count")[0]);
        assertEquals("2012-05-18T22:44:00Z", extractData.getValues("dcterms:modified")[0]);