Package org.camunda.bpm.engine.impl.util

Class StringUtil

java.lang.Object
org.camunda.bpm.engine.impl.util.StringUtil
public final class StringUtil extends Object
Author:
Sebastian Menski

  • Field Details

    • DB_MAX_STRING_LENGTH

      public static int DB_MAX_STRING_LENGTH
      Note: String.length() counts Unicode supplementary characters twice, so for a String consisting only of those, the limit is effectively MAX_LONG_STRING_LENGTH / 2

  • Constructor Details

    • StringUtil

      public StringUtil()

  • Method Details

    • isExpression

      public static boolean isExpression(String text)
      Checks whether a String seams to be an expression or not Note: In most cases you should check for composite expressions. See isCompositeExpression(String, ExpressionManager) for more information.
      Parameters:
      text - the text to check
      Returns:
      true if the text seams to be an expression false otherwise

    • isCompositeExpression

      public static boolean isCompositeExpression(String text, ExpressionManager expressionManager)
      Checks whether a String seams to be a composite expression or not. In contrast to an eval expression is the composite expression also allowed to consist of a combination of literal and eval expressions, e.g., "Welcome ${customer.name} to our site". Note: If you just want to allow eval expression, then the expression must always start with "#{" or "${". Use isExpression(String) to conduct these kind of checks.

    • split

      public static String[] split(String text, String regex)

    • hasAnySuffix

      public static boolean hasAnySuffix(String text, String[] suffixes)

    • fromBytes

      public static String fromBytes(byte[] bytes)
      Converts a byte array into a string using the current process engines default charset as returned by ProcessEngineConfigurationImpl.getDefaultCharset(). The converted string is empty if the provided byte array is empty or null.
      Parameters:
      bytes - the byte array
      Returns:
      a string representing the bytes, empty String if byte array is null

    • fromBytes

      public static String fromBytes(byte[] bytes, ProcessEngine processEngine)
      Converts a byte array into a string using the current process engines default charset as returned by ProcessEngineConfigurationImpl.getDefaultCharset(). The converted string is empty if the provided byte array is empty or null.
      Parameters:
      bytes - the byte array
      processEngine - the process engine
      Returns:
      a string representing the bytes, empty String if byte array is null

    • readerFromBytes

      public static Reader readerFromBytes(byte[] bytes)

    • writerForStream

      public static Writer writerForStream(OutputStream outStream)

    • toByteArray

      public static byte[] toByteArray(String string)
      Gets the bytes from a string using the current process engine's default charset
      Parameters:
      string - the string to get the bytes form
      Returns:
      the byte array

    • toByteArray

      public static byte[] toByteArray(String string, ProcessEngine processEngine)
      Gets the bytes from a string using the provided process engine's default charset
      Parameters:
      string - the string to get the bytes form
      processEngine - the process engine to use
      Returns:
      the byte array

    • trimToMaximumLengthAllowed

      public static String trimToMaximumLengthAllowed(String string)
      Trims the input to the maxium length allowed for persistence with our default database schema
      Parameters:
      string - the input that might be trimmed if maximum length is exceeded
      Returns:
      the input, eventually trimmed to DB_MAX_STRING_LENGTH

    • joinDbEntityIds

      public static String joinDbEntityIds(Collection<? extends DbEntity> dbEntities)

    • joinProcessElementInstanceIds

      public static String joinProcessElementInstanceIds(Collection<? extends ProcessElementInstance> processElementInstances)

    • hasText

      public static boolean hasText(String string)
      Parameters:
      string - the String to check.
      Returns:
      a boolean TRUE if the String is not null and not empty. FALSE otherwise.

    • join

      public static String join(Iterator<String> iterator)