* 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"));

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

    public void test_toLowercaseWildcard_enabled() {
        queryCommand.setLowercaseWildcard(true);

        assertEquals("test", queryCommand.toLowercaseWildcard("TEST"));
        assertEquals("hello", queryCommand.toLowercaseWildcard("Hello"));
        assertEquals("mixed123", queryCommand.toLowercaseWildcard("MiXeD123"));
        assertEquals("already_lower", queryCommand.toLowercaseWildcard("already_lower"));
    }

    @Test

/**
 * 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();
    }

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

    private TermQueryCommand queryCommand;

    @Override
    protected void setUpChild() throws Exception {
        queryCommand = new TermQueryCommand();
        queryCommand.register();
    }

    private void setQueryType(final String queryType) {
        // Re-create the base FessConfig with the new query type