Function L7LayerUtil

src/common/mapping/utils/L7LayerUtil.js:222–2081

(config)

}

export function L7LayerUtil(config) {
  const { featureFilter, expression, spec, L7Layer, L7, proj4 } = config;

  /**
 * @param {string} url
 * @param {string} [token]
 * @returns {string}
 */
  function addCredentialToUrl(url, credential) {
    if (!credential) {
      return url;
    }
    const tokenInfo = `${credential.key || credential.name}=${credential.value}`;
    const newUrl = url.includes('?') ? `${url}&${tokenInfo}` : `${url}?${tokenInfo}`;
    return newUrl;
  }

  /**
   * @description 获取数据集表头信息
   * @param {string} datasetUrl 数据集地址
   * @param {Object} credential
   * @param {Object} options
   */
  function getRestDataFields(datasetUrl, credential, options) {
    const url = addCredentialToUrl(`${datasetUrl}/fields.json?returnAll=true`, credential);
    return FetchRequest.get(url, null, options)
      .then((res) => res.json())
      .then((result) => {
        return result.map((item) => {
          const { caption, name, isSystemField, type, maxLength, isZeroLengthAllowed } = item;
          return {
            name,
            type,
            title: caption,
            visible: true,
            isSystemField,
            maxLength, // MaxLength字节最大长度
            isZeroLengthAllowed // 是否允许零长度
          };
        });
      });
  }

  /**
   * @description 获取值域
   * @param {string} datasetUrl
   * @param {Object} credential
   * @param {Object} options
   */
  function getRestDataDomains(datasetUrl, credential, options) {
    const url = addCredentialToUrl(`${datasetUrl}/domain.json`, credential);
    return FetchRequest.get(url, null, options).then((result) => {
      return result.json();
    });
  }

  /**
   * restdata字段排序，系统字段放在最前面