* Provides common functionality for processing and executing search queries.
 */
public abstract class QueryCommand {

    /**
     * Default constructor for QueryCommand.
     * Creates a new instance of the query command with default settings.
     */
    public QueryCommand() {
        // Default constructor
    }

    /**
     * Executes the query command and returns a QueryBuilder.

        assertEquals("TEST123", queryCommand.toLowercaseWildcard("TEST123"));
        assertEquals("", queryCommand.toLowercaseWildcard(""));
    }

    @Test
    public void test_toLowercaseWildcard_mixedCase() {
        queryCommand.setLowercaseWildcard(true);

        assertEquals("testcase", queryCommand.toLowercaseWildcard("TestCase"));

        assertTrue(queryCommand.isSearchField("title"));
        assertTrue(queryCommand.isSearchField("content"));
        assertTrue(queryCommand.isSearchField("url"));
        assertTrue(queryCommand.isSearchField("host"));
        assertTrue(queryCommand.isSearchField("filetype"));

        // Test invalid search fields
        assertFalse(queryCommand.isSearchField("invalid"));
        assertFalse(queryCommand.isSearchField("unknown"));

    private PhraseQueryCommand queryCommand;

    @Override
    protected void setUpChild() throws Exception {
        // Initialize and register PhraseQueryCommand
        queryCommand = new PhraseQueryCommand();
        queryCommand.register();
    }

    @Test
    public void test_getQueryClassName() {
        assertEquals("PhraseQuery", queryCommand.getQueryClassName());
    }

    @Test

    private TermRangeQueryCommand queryCommand;

    @Override
    protected void setUpChild() throws Exception {
        // Initialize and register TermRangeQueryCommand
        queryCommand = new TermRangeQueryCommand();
        queryCommand.register();
    }

    @Test
    public void test_getQueryClassName() {
        assertEquals("TermRangeQuery", queryCommand.getQueryClassName());
    }

    @Test

 * Command class for handling term range query execution and conversion.
 * This class processes Lucene TermRangeQuery objects and converts them to OpenSearch QueryBuilder instances.
 */
public class TermRangeQueryCommand extends QueryCommand {
    private static final Logger logger = LogManager.getLogger(TermRangeQueryCommand.class);

    /**
     * Default constructor for TermRangeQueryCommand.
     */
    public TermRangeQueryCommand() {

import org.opensearch.index.query.PrefixQueryBuilder;
import org.opensearch.index.query.QueryBuilder;

public class QueryCommandTest extends UnitFessTestCase {
    private QueryCommand queryCommand;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);

        // Setup FessConfig with proper initialization

/**
 * Command class for handling term query execution and conversion.
 * This class processes Lucene TermQuery objects and converts them to OpenSearch QueryBuilder instances.
 */
public class TermQueryCommand extends QueryCommand {
    private static final Logger logger = LogManager.getLogger(TermQueryCommand.class);

    /**
     * Default constructor for TermQueryCommand.
     */
    public TermQueryCommand() {
        super();
    }

 * Converts Lucene WildcardQuery objects to OpenSearch QueryBuilder objects,
 * supporting wildcard pattern matching with configurable case sensitivity.
 */
public class WildcardQueryCommand extends QueryCommand {

    /**
     * Default constructor.
     */
    public WildcardQueryCommand() {
        super();
    }

    private static final Logger logger = LogManager.getLogger(WildcardQueryCommand.class);

import org.opensearch.index.query.QueryBuilder;

/**
 * Query command implementation for handling Boost queries.
 * Processes Lucene BoostQuery objects and applies boost factors.
 */
public class BoostQueryCommand extends QueryCommand {
    /**
     * Default constructor for BoostQueryCommand.
     */
    public BoostQueryCommand() {
        super();
    }