/** The underlying crawler client */
    protected CrawlerClient client;

    /** Maximum number of retry attempts */
    protected int maxRetryCount = 5;

    /** Interval between retry attempts in milliseconds */
    protected long retryInterval = 500;

    /** Request listener for monitoring request lifecycle */
    protected RequestListener listener;

    /**

/*
 * Copyright 2012-2025 CodeLibs Project and the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

     */
    protected boolean isFileSystemPath(final String url) {
        return ComponentUtil.getProtocolHelper().isFileSystemPath(url);
    }

    /**
     * Validates if the URL is safe for redirection.
     *
     * @param url the URL to validate
     * @return true if the URL is valid for redirection, false otherwise
     */
    protected boolean isValidRedirectUrl(final String url) {

/*
 * Copyright 2012-2025 CodeLibs Project and the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

        return facadeSelectByPK(id);
    }

    protected OptionalEntity<ClickLog> facadeSelectByPK(String id) {
        return doSelectOptionalByPK(id, typeOfSelectedEntity());
    }

    protected <ENTITY extends ClickLog> ENTITY doSelectByPK(String id, Class<? extends ENTITY> tp) {
        return doSelectEntity(xprepareCBAsPK(id), tp);
    }

    protected ClickLogCB xprepareCBAsPK(String id) {

        return facadeSelectByPK(id);
    }

    protected OptionalEntity<Role> facadeSelectByPK(String id) {
        return doSelectOptionalByPK(id, typeOfSelectedEntity());
    }

    protected <ENTITY extends Role> ENTITY doSelectByPK(String id, Class<? extends ENTITY> tp) {
        return doSelectEntity(xprepareCBAsPK(id), tp);
    }

    protected RoleCB xprepareCBAsPK(String id) {

    /** Default encoding for Markdown files. */
    protected String encoding = Constants.UTF_8;

    /** Whether to extract front matter as metadata. */
    protected boolean extractFrontMatter = true;

    /** Whether to extract headings as metadata. */
    protected boolean extractHeadings = true;

    /** Whether to extract link URLs as metadata. */
    protected boolean extractLinks = false;

/*
 * Copyright 2012-2025 CodeLibs Project and the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

        return facadeSelectByPK(id);
    }

    protected OptionalEntity<FailureUrl> facadeSelectByPK(String id) {
        return doSelectOptionalByPK(id, typeOfSelectedEntity());
    }

    protected <ENTITY extends FailureUrl> ENTITY doSelectByPK(String id, Class<? extends ENTITY> tp) {
        return doSelectEntity(xprepareCBAsPK(id), tp);
    }

    protected FailureUrlCB xprepareCBAsPK(String id) {

        return facadeSelectByPK(id);
    }

    protected OptionalEntity<RequestHeader> facadeSelectByPK(String id) {
        return doSelectOptionalByPK(id, typeOfSelectedEntity());
    }

    protected <ENTITY extends RequestHeader> ENTITY doSelectByPK(String id, Class<? extends ENTITY> tp) {
        return doSelectEntity(xprepareCBAsPK(id), tp);
    }

    protected RequestHeaderCB xprepareCBAsPK(String id) {