Package org.geotools.ysld.parse

Class Util

Object
Util
public class Util extends Object
Parsing utilities

  • Constructor Details

    • Util

      public Util()

  • Method Details

    • expression

      public static Expression expression(String value, Factory factory)
      Parses an expression from its string representation.

    • unwrapConcatenates

      public static Expression unwrapConcatenates(Expression expr, Factory factory)
      Simplifies an Expression which may contain multiple ConcatenateFunction into a single top-level ConcatenateFunction with a flat list of parameters.

      If the passed Expression performs no concatenation, it is returned as-is. If the passed Expression represents an empty value, a Literal expression with value null is returned.

      Parameters:
      factory - Function factory
      Returns:
      Simplified expression

    • splitConcatenates

      public static List<Expression> splitConcatenates(Expression expr)
      Splits an Expression into a list of expressions by removing ConcatenateFunction and FilterFunction_strConcat Functions, and listing the children of those functions. This is applied recursively, so nested Expressions are also handled. Null-valued or empty Literal Expressions are removed.
      Returns:
      List of expressions, containing no concatenate functions

    • expression

      public static Expression expression(String value, boolean safe, Factory factory)
      Parses an expression from its string representation.

      The safe parameter when set to true will cause null to be returned when the string can not be parsed as a ECQL expression. When false it will result in an exception thrown back.

      Returns:
      The parsed expression, or null if the string value was empty.

    • anchor

      public static AnchorPoint anchor(Object value, Factory factory)
      Parses an anchor tuple.

    • displacement

      public static Displacement displacement(Object value, Factory factory)
      Parses an displacement tuple.

    • color

      public static Expression color(Object value, Factory factory)
      Parses a color from string representation.

    • floatArray

      public static float[] floatArray(String value)
      Parses a float array from a space delimited list.

    • defaultForNull

      @SafeVarargs @Nullable public static <T> T defaultForNull(@Nullable T... options)
      Returns the first non-null parameter or null.

    • forceDefaultForNull

      @SafeVarargs public static <T> T forceDefaultForNull(@Nullable T... options)
      Returns the first non-null parameter or throws NullPointerException.

    • getNamedZoomContext

      @Nullable public static ZoomContext getNamedZoomContext(String name, List<ZoomContextFinder> zCtxtFinders)
      Finds an applicable ZoomContext based on a name
      Parameters:
      name - Name of the ZoomContext.
      zCtxtFinders - List of finders for the ZoomContext
      Returns:
      ZoomContext matching the name.
      Throws:
      IllegalArgumentException - If name is "EPSG:4326", "EPSG:3857", or "EPSG:900913" (These names cause ambiguities).

    • removeExpressionBrackets

      public static String removeExpressionBrackets(String s)
      Removes up to one set of ${ } expression brackets from a YSLD string. Escape sequences for the characters $}\ within the brackets are unescaped.
      Returns:
      s with brackets and escape sequences removed.

    • makeNumberIfPossible

      public static Object makeNumberIfPossible(String str)
      Returns:
      A number parsed from the provided string, or the string itself if parsing failed. Also returns null if the string was null.

    • serializeColor

      public static String serializeColor(Color c)
      Serializes a Java Color to a String representation of the format "#RRGGBB"
      Parameters:
      c - Color
      Returns:
      String representation of c

    • stripQuotes

      public static String stripQuotes(String str)
      Returns:
      The string with quotes (') stripped from the beginning and end, or null if the string was null.

    • vendorOptions

      public static Map<String,String> vendorOptions(YamlMap sourceMap)
      Parse all vendor options (keys starting with 'x-')
      Parameters:
      sourceMap - YamlMap to parse
      Returns:
      A map of the vendor options