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

Class StringUtil

  • public final class StringUtil
extends Object
    Author:
    Sebastian Menski

    • Field Detail

      • 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 Detail

      • StringUtil

        public StringUtil()

    • Method Detail

      • 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.

      • 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)

      • 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

      • 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.