helper.duplicateHostList = new ArrayList<>();

        DuplicateHost host1 = new DuplicateHost();
        host1.setRegularName("www.example.com");
        host1.setDuplicateHostName("example.com");
        helper.duplicateHostList.add(host1);

        DuplicateHost host2 = new DuplicateHost();
        host2.setRegularName("secure.example.com");
        host2.setDuplicateHostName("www.example.com");

        assertNotNull(result);
        assertFalse(result.isEmpty());
        assertTrue(result.hasMessageOf("testProperty"));
    }

    @Test
    public void test_addErrorsOperationAlreadyRunning_withDifferentHosts() {
        final FessMessages messages1 = new FessMessages();
        messages1.addErrorsOperationAlreadyRunning("prop", "host1");
        assertFalse(messages1.isEmpty());

import jakarta.validation.constraints.Size;

/**
 * Form class for editing duplicate host configurations in the admin interface.
 * This form extends CreateForm to include fields necessary for updating existing duplicate host entries,
 * including tracking information for optimistic locking and audit trails.
 * Duplicate hosts are used to define which domains should be treated as the same site for crawling purposes.
 *
 */

        return relatedQueryMap.size();
    }

    /**
     * Extracts the virtual host key from a RelatedQuery entity.
     * If the virtual host is blank or null, returns an empty string.
     *
     * @param entity the RelatedQuery entity to extract the host key from
     * @return the virtual host key, or empty string if blank or null
     */
    protected String getHostKey(final RelatedQuery entity) {

/**
 * The search form for Duplicate Host.
 */
public class SearchForm {

    /**
     * Default constructor for SearchForm.
     */
    public SearchForm() {
    }

    /**
     * The regular name field for duplicate host configuration.
     */
    public String regularName;

    /**
     * The duplicate host name field for searching duplicate hosts.
     */
    public String duplicateHostName;

import java.util.List;

import org.codelibs.fess.util.ComponentUtil;

/**
 * Pager for duplicate host management with standard paging functionality.
 * This class provides pagination support for duplicate host listings in the admin interface,
 * including navigation controls and search/filter parameters.
 *
 * <p>Duplicate hosts allow administrators to define hostname patterns that should

            return value;
        });
    }

    /**
     * Processes virtual host configuration by applying a function to the matched virtual host key.
     *
     * @param <T> The return type of the function
     * @param func The function to apply to the virtual host key
     * @param defaultValue The default value to return if no virtual host matches
     * @return The result of applying the function, or the default value
     */

    /** The sort order for displaying this duplicate host entry */
    @Required
    @Min(value = 0)
    @Max(value = 2147483647)
    @ValidateTypeFailure
    public Integer sortOrder;

    /** The username of who created this duplicate host entry */
    @Size(max = 1000)
    public String createdBy;

    /** The timestamp when this duplicate host entry was created */
    @ValidateTypeFailure

     * @param host the hostname or IP address string
     * @param port the port number
     * @param path the path (should start with "/" or be empty)
     * @return the complete URL string
     */
    public static String buildUrl(final String protocol, final String host, final int port, final String path) {
        if (protocol == null || host == null) {
            return null;
        }

    }

    /**
     * Extracts the virtual host key from a RelatedContent entity.
     * If the virtual host is blank or null, returns an empty string.
     * This key is used to organize related content by virtual host.
     *
     * @param entity the RelatedContent entity to extract the host key from
     * @return the virtual host key, or empty string if not specified
     */