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

x33g5p2x  于2022-02-01 转载在 其他  
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本文整理了Java中org.javalite.common.Util.blank()方法的一些代码示例，展示了Util.blank()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.blank()方法的具体详情如下：
包路径：org.javalite.common.Util
类名称：Util
方法名：blank

Util.blank介绍

[英]Returns true if value is either null or it's String representation is blank.
[中]如果值为null或其字符串表示形式为空，则返回true。

代码示例

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.    * @param source instance of String
  3.    * @return null if source is empty or contains only whitespaces, source otherwise
  4.    */
  5.   @Override
  6.   public Object convert(String source) {
  7.     return blank(source) ? null : source;
  8.   }
  9. }

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.    * @param source instance of String or null
  3.    * @return source converted to java.sql.Date, or null if source is blank
  4.    * @throws ParseException if conversion failed
  5.    */
  6.   @Override
  7.   public java.sql.Date doConvert(String source) throws ParseException {
  8.     return blank(source) ? null : new java.sql.Date(threadLocalFormat.get().parse(source).getTime());
  9.   }
  10. }

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.    * @param source instance of String or null
  3.    * @return source converted to java.sql.Timestamp, or null if source is blank
  4.    * @throws ParseException if conversion failed
  5.    */
  6.   @Override
  7.   public java.sql.Timestamp doConvert(String source) throws ParseException {
  8.     return blank(source) ? null : new java.sql.Timestamp(threadLocalFormat.get().parse(source).getTime());
  9.   }
  10. }

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.  * @return current environment as specified by environment variable <code>ACTIVE_ENV</code>
  3.  * of <code>active_env</code> system property. System property value overrides environment variable.
  4.  *
  5.  * Defaults to "development" if no environment variable provided.
  6.  */
  7. public String getEnvironment(){
  8.   String env = "development";
  9.   if(!blank(System.getenv("ACTIVE_ENV"))){
  10.     env = System.getenv("ACTIVE_ENV");
  11.   }
  12.   if(!blank(System.getProperty("active_env"))){
  13.     env = System.getProperty("active_env");
  14.   }
  15.   return env;
  16. }

代码示例来源：origin: javalite/activejdbc

  1. protected void appendSubQuery(StringBuilder queryBuilder, String subQuery) {
  2.   if (!blank(subQuery)) {
  3.     // this is only to support findFirst("order by..."), might need to revisit later
  4.     if (!GROUP_BY_PATTERN.matcher(subQuery).find() && !ORDER_BY_PATTERN.matcher(subQuery).find()) {
  5.       queryBuilder.append(" WHERE");
  6.     }
  7.     queryBuilder.append(' ').append(subQuery);
  8.   }
  9. }

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.  * Returns name of environment, such as "development", "production", etc.
  3.  * This is a value that is usually setup with an environment variable <code>ACTIVE_ENV</code>.
  4.  *
  5.  * @return name of environment
  6.  */
  7. public static String getEnv(){
  8.   if(ENV == null){
  9.     if(!blank(System.getenv("ACTIVE_ENV"))) {
  10.       ENV = System.getenv("ACTIVE_ENV");
  11.     }
  12.     if(!blank(System.getProperty("ACTIVE_ENV"))) {
  13.       ENV = System.getProperty("ACTIVE_ENV");
  14.     }
  15.     if(!blank(System.getProperty("active_env"))) {
  16.       ENV = System.getProperty("active_env");
  17.     }
  18.     if(blank(ENV)){
  19.       ENV = "development";
  20.       LogFilter.log(LOGGER, LogLevel.INFO, "Environment variable ACTIVE_ENV not provided, defaulting to '" + ENV + "'");
  21.     }
  22.   }
  23.   return ENV;
  24. }

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.  * Overrides current environment's connection spec from system properties.
  3.  */
  4. private void overrideFromEnvironmentVariables() {
  5.   String  url = System.getenv("ACTIVEJDBC.URL");
  6.   String  user = System.getenv("ACTIVEJDBC.USER");
  7.   String  password = System.getenv("ACTIVEJDBC.PASSWORD");
  8.   String  driver = System.getenv("ACTIVEJDBC.DRIVER");
  9.   if(!blank(url) && !blank(user) && !blank(password) && !blank(driver)){
  10.     connectionSpecMap.put(getEnvironment(), new ConnectionJdbcSpec(driver, url, user, password));
  11.   }
  12.   String  jndi = System.getenv("ACTIVEJDBC.JNDI");
  13.   if(!blank(jndi)){
  14.     connectionSpecMap.put(getEnvironment(), new ConnectionJndiSpec(jndi));
  15.   }
  16. }

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.  * Overrides current environment's connection spec from system properties.
  3.  */
  4. private void overrideFromSystemProperties() {
  5.   String  url = System.getProperty("activejdbc.url");
  6.   String  user = System.getProperty("activejdbc.user");
  7.   String  password = System.getProperty("activejdbc.password");
  8.   String  driver = System.getProperty("activejdbc.driver");
  9.   if(!blank(url) && !blank(user) && !blank(driver)){
  10.     connectionSpecMap.put(getEnvironment(), new ConnectionJdbcSpec(driver, url, user, password));
  11.   }
  12.   String  jndi = System.getProperty("activejdbc.jndi");
  13.   if(!blank(jndi)){
  14.     connectionSpecMap.put(getEnvironment(), new ConnectionJndiSpec(jndi));
  15.   }
  16. }

代码示例来源：origin: javalite/activejdbc

  1. /**
  2.  * TDS converts a number of important data types to String. This isn't what we want, nor helpful. Here, we change them back.
  3.  */
  4. @Override
  5. public Object overrideDriverTypeConversion(MetaModel mm, String attributeName, Object value) {
  6.   if (value instanceof String && !Util.blank(value)) {
  7.     String typeName = mm.getColumnMetadata().get(attributeName).getTypeName();
  8.     if ("date".equalsIgnoreCase(typeName)) {
  9.       return java.sql.Date.valueOf((String) value);
  10.     } else if ("datetime2".equalsIgnoreCase(typeName)) {
  11.       return java.sql.Timestamp.valueOf((String) value);
  12.     }
  13.   }
  14.   return value;
  15. }

代码示例来源：origin: javalite/activejdbc

  1. public RedisCacheManager() {
  2.   try {
  3.     String host = p("redis.cache.manager.host");
  4.     String port = p("redis.cache.manager.port");
  5.     jedisPool = blank(host) || blank(port) ? new JedisPool() : new JedisPool(host,toInteger(port));
  6.   } catch (Exception e) {
  7.     throw new InitException("Failed to configure connection to Redis server", e);
  8.   }
  9. }

代码示例来源：origin: javalite/activejdbc

  1. @Override
  2. public void convert(Model m) {
  3.   Object val = m.get(attributeName);
  4.   if (!(val instanceof java.util.Date) && !blank(val)) {
  5.     try {
  6.       long time = df.parse(val.toString()).getTime();
  7.       java.sql.Date d = new java.sql.Date(time);
  8.       m.set(attributeName, d);
  9.     } catch (ParseException e) {
  10.       m.addValidator(this, attributeName);
  11.     }
  12.   }
  13. }

代码示例来源：origin: javalite/activejdbc

  1. @Override
  2. public void convert(Model m) {
  3.   Object val = m.get(attributeName);
  4.   if (!(val instanceof Timestamp) && !blank(val)) {
  5.     try {
  6.       long time = df.parse(val.toString()).getTime();
  7.       Timestamp t = new Timestamp(time);
  8.       m.set(attributeName, t);
  9.     } catch(ParseException e) {
  10.       m.addValidator(this, attributeName);
  11.     }
  12.   }
  13. }

代码示例来源：origin: javalite/activejdbc

  1. @Override
  2. public void validate(Model m) {
  3.   if (blank(m.get(attribute))) {
  4.     //TODO: use resource bundles for messages
  5.     m.addValidator(this, attribute);
  6.   }
  7. }

代码示例来源：origin: javalite/activejdbc

  1. for (String line : lines) {
  2.   line = line.trim();
  3.   if (!commentLine(line) && !blank(line)) {
  4.     if (line.startsWith(DELIMITER_KEYWORD)) {
  5.       delimiter = line.substring(10).trim();
  6.     } else if (line.endsWith(delimiter)) {
  7.       currentStatement += line.substring(0, line.length() - delimiter.length()) ;
  8.       if(!blank(currentStatement)){
  9.         statements.add(currentStatement);
  10. if(!blank(currentStatement)){
  11.   statements.add(currentStatement);

代码示例来源：origin: javalite/activejdbc

  1. break;
  2. case XMLStreamConstants.END_ELEMENT:
  3.   if (attr != null && !blank(chars)) {
  4.     res.put(attr, chars);

代码示例来源：origin: javalite/activejdbc

  1. private static String exec(String command) {
  3.     Runtime runtime = Runtime.getRuntime();
  5.     try {
  7.       Process p = runtime.exec(command);
  8.       String output = read(p.getInputStream());
  9.       String error = read(p.getErrorStream());
  11.       if (!blank(error)) {
  12.         throw new ExecException(error);
  13.       }
  14.       return output;
  15.     } catch (ExecException e) {
  16.       throw e;
  17.     } catch (Exception e) {
  18.       throw new ExecException(e);
  19.     }
  20.   }
  21. }

代码示例来源：origin: javalite/activejdbc

  1. @Override
  2. public Object overrideDriverTypeConversion(MetaModel mm, String attributeName, Object value) {
  3.   // SQLite returns DATE and DATETIME as String or Number values
  4.   if (value instanceof String && !Util.blank(value) || value instanceof Number) {
  5.     String typeName = mm.getColumnMetadata().get(attributeName).getTypeName();
  6.     if ("DATE".equalsIgnoreCase(typeName)) {
  7.       return Convert.toSqlDate(value);
  8.     } else if ("DATETIME".equalsIgnoreCase(typeName)) {
  9.       return Convert.toTimestamp(value);
  10.     } else if ("TIME".equalsIgnoreCase(typeName)) {
  11.       return Convert.toTime(value);
  12.     }
  13.   }
  14.   return value;
  15. }

代码示例来源：origin: javalite/activejdbc

  1. private static int update(MetaModel metaModel, String updates, String conditions, Object... params) {
  2.   StringBuilder sql = new StringBuilder().append("UPDATE ").append(metaModel.getTableName()).append(" SET ");
  3.   Object[] allParams;
  4.   if (metaModel.hasAttribute("updated_at")) {
  5.     sql.append("updated_at = ?, ");
  6.     allParams = new Object[params.length + 1];
  7.     allParams[0] = new Timestamp(System.currentTimeMillis());
  8.     System.arraycopy(params, 0, allParams, 1, params.length);
  9.   } else {
  10.     allParams = params;
  11.   }
  12.   sql.append(updates);
  13.   if (!blank(conditions)) {
  14.     sql.append(" WHERE ").append(conditions);
  15.   }
  16.   int count = new DB(metaModel.getDbName()).exec(sql.toString(), allParams);
  17.   if (metaModel.cached()) {
  18.     Registry.cacheManager().purgeTableCache(metaModel);
  19.   }
  20.   return count;
  21. }

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

  1. /**
  2.    * @param source instance of String or null
  3.    * @return source converted to java.sql.Date, or null if source is blank
  4.    * @throws ParseException if conversion failed
  5.    */
  6.   @Override
  7.   public java.sql.Date doConvert(String source) throws ParseException {
  8.     return blank(source) ? null : new java.sql.Date(threadLocalFormat.get().parse(source).getTime());
  9.   }
  10. }

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

  1. protected void appendSubQuery(StringBuilder queryBuilder, String subQuery) {
  2.   if (!blank(subQuery)) {
  3.     // this is only to support findFirst("order by..."), might need to revisit later
  4.     if (!GROUP_BY_PATTERN.matcher(subQuery).find() && !ORDER_BY_PATTERN.matcher(subQuery).find()) {
  5.       queryBuilder.append(" WHERE");
  6.     }
  7.     queryBuilder.append(' ').append(subQuery);
  8.   }
  9. }

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