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com.vaadin.shared.util.

Class SharedUtil

  • All Implemented Interfaces:

    Serializable

    public class SharedUtil
extends Object
implements Serializable

    Misc internal utility methods used by both the server and the client package.

    Since:

    7.1

    Author:

    Vaadin Ltd

    See Also:

    Serialized Form

    • Field Detail

      • SIZE_PATTERN

        public static final String SIZE_PATTERN

        RegEx pattern to extract the width/height values.

        See Also:

        Constant Field Values

    • Constructor Detail

      • SharedUtil

        public SharedUtil()

    • Method Detail

      • equals

        public static boolean equals​(Object o1,
                             Object o2)

        Checks if a and b are equals using Object.equals(Object). Handles null values as well. Does not ensure that objects are of the same type. Assumes that the first object's equals method handle equals properly.

        Parameters:

        o1 - The first value to compare

        o2 - The second value to compare

        Returns:

        true if the objects are equal, false otherwise

      • trimTrailingSlashes

        public static String trimTrailingSlashes​(String value)

        Trims trailing slashes (if any) from a string.

        Parameters:

        value - The string value to be trimmed. Cannot be null.

        Returns:

        String value without trailing slashes.

      • splitCamelCase

        public static String[] splitCamelCase​(String camelCaseString)

        Splits a camelCaseString into an array of words with the casing preserved.

        Parameters:

        camelCaseString - The input string in camelCase format

        Returns:

        An array with one entry per word in the input string

        Since:

        7.4

      • camelCaseToHumanFriendly

        public static String camelCaseToHumanFriendly​(String camelCaseString)

        Converts a camelCaseString to a human friendly format (Camel case string).

        In general splits words when the casing changes but also handles special cases such as consecutive upper case characters. Examples:

        MyBeanContainer becomes My Bean Container AwesomeURLFactory becomes Awesome URL Factory SomeUriAction becomes Some Uri Action

        Parameters:

        camelCaseString - The input string in camelCase format

        Returns:

        A human friendly version of the input

        Since:

        7.4

      • upperCaseUnderscoreToHumanFriendly

        public static String upperCaseUnderscoreToHumanFriendly​(String upperCaseUnderscoreString)

        Converts an UPPER_CASE_STRING to a human friendly format (Upper Case String).

        Splits words on _. Examples:

        MY_BEAN_CONTAINER becomes My Bean Container AWESOME_URL_FACTORY becomes Awesome Url Factory SOMETHING becomes Something

        Parameters:

        upperCaseUnderscoreString - The input string in UPPER_CASE_UNDERSCORE format

        Returns:

        A human friendly version of the input

        Since:

        7.7.4

      • join

        public static String join​(String[] parts,
                          String separator)

        Joins the words in the input array together into a single string by inserting the separator string between each word.

        Parameters:

        parts - The array of words

        separator - The separator string to use between words

        Returns:

        The constructed string of words and separators

        Since:

        7.4

      • capitalize

        public static String capitalize​(String string)

        Capitalizes the first character in the given string in a way suitable for use in code (methods, properties etc).

        Parameters:

        string - The string to capitalize

        Returns:

        The capitalized string

        Since:

        7.4

      • propertyIdToHumanFriendly

        public static String propertyIdToHumanFriendly​(Object propertyId)

        Converts a property id to a human friendly format. Handles nested properties by only considering the last part, e.g. "address.streetName" is equal to "streetName" for this method.

        Parameters:

        propertyId - The propertyId to format

        Returns:

        A human friendly version of the property id

        Since:

        7.4

      • addGetParameters

        public static String addGetParameters​(String uri,
                                      String extraParams)

        Adds the get parameters to the uri and returns the new uri that contains the parameters.

        Parameters:

        uri - The uri to which the parameters should be added.

        extraParams - One or more parameters in the format "a=b" or "c=d&e=f". An empty string is allowed but will not modify the url.

        Returns:

        The modified URI with the get parameters in extraParams added.

      • dashSeparatedToCamelCase

        public static String dashSeparatedToCamelCase​(String dashSeparated)

        Converts a dash ("-") separated string into camelCase.

        Examples:

        foo becomes foo foo-bar becomes fooBar foo--bar becomes fooBar

        Parameters:

        dashSeparated - The dash separated string to convert

        Returns:

        a camelCase version of the input string

        Since:

        7.5

      • containsDuplicates

        public static boolean containsDuplicates​(Object[] values)

        Checks if the given array contains duplicates (according to Object.equals(Object).

        Parameters:

        values - the array to check for duplicates

        Returns:

        true if the array contains duplicates, false otherwise

      • getDuplicates

        public static String getDuplicates​(Object[] values)

        Return duplicate values in the given array in the format "duplicateValue1, duplicateValue2".

        Parameters:

        values - the values to check for duplicates

        Returns:

        a comma separated string of duplicates or an empty string if no duplicates were found