org.javalite.common.Util.empty()方法的使用及代码示例

x33g5p2x  于2022-02-01 转载在 其他  
字(10.7k)|赞(0)|评价(0)|浏览(263)

本文整理了Java中org.javalite.common.Util.empty()方法的一些代码示例，展示了Util.empty()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Util.empty()方法的具体详情如下：
包路径：org.javalite.common.Util
类名称：Util
方法名：empty

Util.empty介绍

[英]Returns true if collection is either null or empty.
[中]如果集合为null或空，则返回true。

代码示例

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.  * Joins the items in array with a delimiter, and appends the result to StringBuilder.
  3.  *
  4.  * @param sb StringBuilder to append result to
  5.  * @param array array of items to join.
  6.  * @param delimiter delimiter to insert between elements of array.
  7.  */
  8. public static void join(StringBuilder sb, Object[] array, String delimiter) {
  9.   if (empty(array)) { return; }
  10.   sb.append(array[0]);
  11.   for (int i = 1; i < array.length; i++) {
  12.     sb.append(delimiter);
  13.     sb.append(array[i]);
  14.   }
  15. }

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.  * Joins the items in array with a delimiter.
  3.  *
  4.  * @param array array of items to join.
  5.  * @param delimiter delimiter to insert between elements of array.
  6.  * @return string with array elements separated by delimiter. There is no trailing delimiter in the string.
  7.  */
  8. public static String join(String[] array, String delimiter) {
  9.   if (empty(array)) { return ""; }
  10.   StringBuilder sb = new StringBuilder();
  11.   join(sb, array, delimiter);
  12.   return sb.toString();
  13. }

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.  * Looks for a localized property/message in <code>activejdbc_messages</code> bundle.
  3.  *
  4.  * @param key key of the property.
  5.  * @param locale locale of a bundle, or null for default locale
  6.  * @param params list of parameters for a message. The order of parameters in this list will correspond to the
  7.  * numeric order in the parameters listed in the message and has nothing to do with a physical order. This means
  8.  * that the first parameter in the list will correspond to <code>{0}</code>, second to <code>{1}</code> and so on.
  9.  * @return localized  message merged with parameters (if provided), or key if message not found.
  10.  */
  11. public static String message(String key, Locale locale, Object... params) {
  12.   String pattern;
  13.   try {
  14.     pattern = ResourceBundle.getBundle(BUNDLE, locale == null ? Locale.getDefault() : locale).getString(key);
  15.   } catch (MissingResourceException e) {
  16.     pattern = key;
  17.   }
  18.   return empty(params) ? pattern : new MessageFormat(pattern).format(params);
  19. }

代码示例来源：origin: javalite/activejdbc

  1. public static <T extends Model> LazyList<T> where(Class<T> clazz, String subquery, Object... params) {
  2.   if (subquery.trim().equals("*")) {
  3.     if (empty(params)) {
  4.       return findAll(clazz);
  5.     } else {
  6.       throw new IllegalArgumentException(
  7.           "cannot provide parameters with query: '*', use findAll() method instead");
  8.     }
  9.   }
  10.   return new LazyList<>(subquery, metaModelOf(clazz), params);
  11. }

代码示例来源：origin: javalite/activejdbc

  1. if (pretty) { sb.append('\n'); }
  2. String[] names = !empty(attributeNames) ? attributeNames : attributeNamesLowerCased();
  3. for (String name : names) {
  4.   if (pretty) { sb.append("  ").append(indent); }

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.  * Runs a count query, returns a number of matching records.
  3.  *
  4.  * @param table table in which to count rows.
  5.  * @param query this is a filtering query for the count. If '*' provided, all records will be counted. Example:
  6.  * <code>"age > 65 AND department = 'accounting'"</code>
  7.  * @param params parameters for placeholder substitution.
  8.  * @return count number of records found in a table.
  9.  */
  10. public Long count(String table, String query, Object... params) {
  11.   if (query.trim().equals("*")) {
  12.     if (empty(params)) {
  13.       return count(table);
  14.     } else {
  15.       throw new IllegalArgumentException("cannot use '*' and parameters");
  16.     }
  17.   }
  18.   String sql = "SELECT COUNT(*) FROM " + table + " WHERE " + query;
  19.   return Convert.toLong(firstCell(sql, params));
  20. }

代码示例来源：origin: javalite/activejdbc

  1. sb.append('{');
  2. String[] names = !empty(attributeNames) ? attributeNames : attributeNamesLowerCased();
  3. for (int i = 0; i < names.length; i++) {
  4.   if (i > 0) { sb.append(','); }

代码示例来源：origin: org.javalite/javalite-common

  1. /**
  2.  * Joins the items in array with a delimiter, and appends the result to StringBuilder.
  3.  *
  4.  * @param sb StringBuilder to append result to
  5.  * @param array array of items to join.
  6.  * @param delimiter delimiter to insert between elements of array.
  7.  */
  8. public static void join(StringBuilder sb, Object[] array, String delimiter) {
  9.   if (empty(array)) { return; }
  10.   sb.append(array[0]);
  11.   for (int i = 1; i < array.length; i++) {
  12.     sb.append(delimiter);
  13.     sb.append(array[i]);
  14.   }
  15. }

代码示例来源：origin: com.github.tchoulihan/javalite-common

  1. /**
  2.  * Joins the items in array with a delimiter, and appends the result to StringBuilder.
  3.  *
  4.  * @param sb StringBuilder to append result to
  5.  * @param array array of items to join.
  6.  * @param delimiter delimiter to insert between elements of array.
  7.  */
  8. public static void join(StringBuilder sb, Object[] array, String delimiter) {
  9.   if (empty(array)) { return; }
  10.   sb.append(array[0]);
  11.   for (int i = 1; i < array.length; i++) {
  12.     sb.append(delimiter);
  13.     sb.append(array[i]);
  14.   }
  15. }

代码示例来源：origin: org.javalite/activejdbc

  1. /**
  2.  * Looks for a localized property/message in <code>activejdbc_messages</code> bundle.
  3.  *
  4.  * @param key key of the property.
  5.  * @param locale locale of a bundle, or null for default locale
  6.  * @param params list of parameters for a message. The order of parameters in this list will correspond to the
  7.  * numeric order in the parameters listed in the message and has nothing to do with a physical order. This means
  8.  * that the first parameter in the list will correspond to <code>{0}</code>, second to <code>{1}</code> and so on.
  9.  * @return localized  message merged with parameters (if provided), or key if message not found.
  10.  */
  11. public static String message(String key, Locale locale, Object... params) {
  12.   String pattern;
  13.   try {
  14.     pattern = ResourceBundle.getBundle(BUNDLE, locale == null ? Locale.getDefault() : locale).getString(key);
  15.   } catch (MissingResourceException e) {
  16.     pattern = key;
  17.   }
  18.   return empty(params) ? pattern : new MessageFormat(pattern).format(params);
  19. }

代码示例来源：origin: com.github.tchoulihan/activejdbc

  1. /**
  2.  * Looks for a localized property/message in <code>activejdbc_messages</code> bundle.
  3.  *
  4.  * @param key key of the property.
  5.  * @param locale locale of a bundle, or null for default locale
  6.  * @param params list of parameters for a message. The order of parameters in this list will correspond to the
  7.  * numeric order in the parameters listed in the message and has nothing to do with a physical order. This means
  8.  * that the first parameter in the list will correspond to <code>{0}</code>, second to <code>{1}</code> and so on.
  9.  * @return localized  message merged with parameters (if provided), or key if message not found.
  10.  */
  11. public static String message(String key, Locale locale, Object... params) {
  12.   String pattern;
  13.   try {
  14.     pattern = ResourceBundle.getBundle(BUNDLE, locale == null ? Locale.getDefault() : locale).getString(key);
  15.   } catch (MissingResourceException e) {
  16.     pattern = key;
  17.   }
  18.   return empty(params) ? pattern : new MessageFormat(pattern).format(params);
  19. }

代码示例来源：origin: org.javalite/javalite-common

  1. /**
  2.  * Joins the items in array with a delimiter.
  3.  *
  4.  * @param array array of items to join.
  5.  * @param delimiter delimiter to insert between elements of array.
  6.  * @return string with array elements separated by delimiter. There is no trailing delimiter in the string.
  7.  */
  8. public static String join(String[] array, String delimiter) {
  9.   if (empty(array)) { return ""; }
  10.   StringBuilder sb = new StringBuilder();
  11.   join(sb, array, delimiter);
  12.   return sb.toString();
  13. }

代码示例来源：origin: com.github.tchoulihan/activejdbc

  1. static void logAccess(String query, Object[] params, String access) {
  2.   if (logger.isInfoEnabled()) {
  3.     StringBuilder log = new StringBuilder().append(access).append(", ").append('"').append(query).append('"');
  4.     if (!empty(params)) {
  5.       log.append(", with parameters: ").append('<');
  6.       join(log, params, ">, <");
  7.       log.append('>');
  8.     }
  9.     LogFilter.log(logger, log.toString());
  10.   }
  11. }

代码示例来源：origin: com.github.tchoulihan/javalite-common

  1. /**
  2.  * Joins the items in array with a delimiter.
  3.  *
  4.  * @param array array of items to join.
  5.  * @param delimiter delimiter to insert between elements of array.
  6.  * @return string with array elements separated by delimiter. There is no trailing delimiter in the string.
  7.  */
  8. public static String join(String[] array, String delimiter) {
  9.   if (empty(array)) { return ""; }
  10.   StringBuilder sb = new StringBuilder();
  11.   join(sb, array, delimiter);
  12.   return sb.toString();
  13. }

代码示例来源：origin: org.javalite/activejdbc

  1. public static <T extends Model> LazyList<T> where(Class<T> clazz, String subquery, Object... params) {
  2.   if (subquery.trim().equals("*")) {
  3.     if (empty(params)) {
  4.       return findAll(clazz);
  5.     } else {
  6.       throw new IllegalArgumentException(
  7.           "cannot provide parameters with query: '*', use findAll() method instead");
  8.     }
  9.   }
  10.   return new LazyList<>(subquery, metaModelOf(clazz), params);
  11. }

代码示例来源：origin: com.github.tchoulihan/activejdbc

  1. public static <T extends Model> LazyList<T> where(Class<T> clazz, String subquery, Object... params) {
  2.   if (subquery.trim().equals("*")) {
  3.     if (empty(params)) {
  4.       return findAll(clazz);
  5.     } else {
  6.       throw new IllegalArgumentException(
  7.           "cannot provide parameters with query: '*', use findAll() method instead");
  8.     }
  9.   }
  10.   return new LazyList<T>(subquery, metaModelOf(clazz), params);
  11. }

代码示例来源：origin: com.github.tchoulihan/activejdbc

  1. /**
  2.  * Runs a count query, returns a number of matching records.
  3.  *
  4.  * @param table table in which to count rows.
  5.  * @param query this is a filtering query for the count. If '*' provided, all records will be counted. Example:
  6.  * <code>"age > 65 AND department = 'accounting'"</code>
  7.  * @param params parameters for placeholder substitution.
  8.  * @return count number of records found in a table.
  9.  */
  10. public Long count(String table, String query, Object... params) {
  11.   if (query.trim().equals("*")) {
  12.     if (empty(params)) {
  13.       return count(table);
  14.     } else {
  15.       throw new IllegalArgumentException("cannot use '*' and parameters");
  16.     }
  17.   }
  18.   String sql = "SELECT COUNT(*) FROM " + table + " WHERE " + query;
  19.   return Convert.toLong(firstCell(sql, params));
  20. }

代码示例来源：origin: org.javalite/activejdbc

  1. /**
  2.  * Runs a count query, returns a number of matching records.
  3.  *
  4.  * @param table table in which to count rows.
  5.  * @param query this is a filtering query for the count. If '*' provided, all records will be counted. Example:
  6.  * <code>"age > 65 AND department = 'accounting'"</code>
  7.  * @param params parameters for placeholder substitution.
  8.  * @return count number of records found in a table.
  9.  */
  10. public Long count(String table, String query, Object... params) {
  11.   if (query.trim().equals("*")) {
  12.     if (empty(params)) {
  13.       return count(table);
  14.     } else {
  15.       throw new IllegalArgumentException("cannot use '*' and parameters");
  16.     }
  17.   }
  18.   String sql = "SELECT COUNT(*) FROM " + table + " WHERE " + query;
  19.   return Convert.toLong(firstCell(sql, params));
  20. }

代码示例来源：origin: com.github.tchoulihan/activejdbc

  1. if (pretty) { sb.append('\n'); }
  2. String[] names = !empty(attributeNames) ? attributeNames : attributeNamesLowerCased();
  3. for (String name : names) {
  4.   if (pretty) { sb.append("  ").append(indent); }

代码示例来源：origin: com.github.tchoulihan/activejdbc

  1. static void logQuery(Logger logger, String query, Object[] params, long queryStartTime){
  2.   long time = System.currentTimeMillis() - queryStartTime;
  3.   if (Registry.instance().getConfiguration().collectStatistics()) {
  4.     Registry.instance().getStatisticsQueue().enqueue(new QueryExecutionEvent(query, time));
  5.   }
  6.   if (logger.isInfoEnabled()) {
  7.     StringBuilder log =  new StringBuilder().append("Query: \"").append(query).append('"');
  8.     if (!empty(params)) {
  9.       log.append(", with parameters: ").append('<');
  10.       join(log, params, ">, <");
  11.       log.append('>');
  12.     }
  13.     log(logger, log.append(", took: ").append(time).append(" milliseconds").toString());
  14.   }
  15. }

内容来源于网络，如有侵权，请联系作者删除！

Util

相关文章

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多
    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com