/** List of filters to apply to queries */
    protected List<Filter> filterList = new ArrayList<>();

    /** The filter chain used to process queries */
    protected FilterChain filterChain;

    /**
     * Initializes the query parser by creating the filter chain.
     * This method is called automatically after construction.
     */
    @PostConstruct
    public void init() {

        HttpServletRequest request = createMockHttpServletRequest();
        HttpServletResponse response = createMockHttpServletResponse();
        AtomicBoolean chainCalled = new AtomicBoolean(false);

        FilterChain chain = new FilterChain() {
            @Override
            public void doFilter(ServletRequest req, ServletResponse res) throws IOException, ServletException {
                chainCalled.set(true);

import org.codelibs.fess.cors.CorsHandler;
import org.codelibs.fess.cors.CorsHandlerFactory;
import org.codelibs.fess.util.ComponentUtil;

import jakarta.servlet.Filter;
import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.Query;
import org.codelibs.fess.entity.QueryContext;
import org.codelibs.fess.query.QueryProcessor.FilterChain;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.opensearch.index.query.BoolQueryBuilder;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;

import org.lastaflute.web.util.LaRequestUtil;
import org.lastaflute.web.util.LaResponseUtil;
import org.opensearch.script.Script;

import jakarta.annotation.PostConstruct;
import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

/**
 * The API manager for search operations.
 */

import org.codelibs.fess.api.WebApiManager;
import org.codelibs.fess.api.WebApiManagerFactory;
import org.codelibs.fess.util.ComponentUtil;

import jakarta.servlet.Filter;
import jakarta.servlet.FilterChain;
import jakarta.servlet.FilterConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.api;

import java.io.IOException;

import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

/**
 * Interface for managing web API request processing.

    /**
     * The filter chain that processes queries through all registered filters
     * before executing the appropriate query command.
     */
    protected FilterChain filterChain;

    /**
     * Initializes the query processor after construction.
     * This method creates the initial filter chain from the registered filters.

 */
package org.codelibs.fess.api;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;

import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import org.codelibs.fess.cors.CorsHandler;
import org.codelibs.fess.cors.CorsHandlerFactory;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;

import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;