Package org.terracotta.context.query

Class Matchers

java.lang.Object
org.terracotta.context.query.Matchers
public final class Matchers extends Object
A static library of Matcher implementations that can be used with the QueryBuilder.filter(Matcher) method.

  • Constructor Details

    • Matchers

      private Matchers()

  • Method Details

    • context

      public static Matcher<TreeNode> context(Matcher<ContextElement> matcher)
      Returns a matcher that matches tree nodes whose TreeNode.getContext() match against the supplied matcher.
      Parameters:
      matcher - ContextElement matcher
      Returns:
      a TreeNode matcher

    • attributes

      public static Matcher<ContextElement> attributes(Matcher<Map<String,Object>> matcher)
      Returns a matcher that matches context elements whose ContextElement.attributes() match against the supplied matcher.
      Parameters:
      matcher - a Map (attributes) matcher
      Returns:
      a ContextElement matcher

    • identifier

      public static Matcher<ContextElement> identifier(Matcher<Class<?>> matcher)
      Returns a matcher that matches context elements whose ContextElement.identifier() match against the supplied matcher.
      Parameters:
      matcher - Class<?> matcher
      Returns:
      a ContextElement matcher

    • subclassOf

      public static Matcher<Class<?>> subclassOf(Class<?> klazz)
      Returns a matcher that matches classes that are sub-types of the supplied class.
      Parameters:
      klazz - a potential super-type
      Returns:
      a Class<?> matcher

    • hasAttribute

      public static Matcher<Map<String,Object>> hasAttribute(String key, Object value)
      Returns a matcher that matches attribute maps that include the given attribute entry.
      Parameters:
      key - attribute name
      value - attribute value
      Returns:
      a Map<String, Object> matcher

    • hasAttribute

      public static Matcher<Map<String,Object>> hasAttribute(String key, Matcher<? extends Object> value)
      Returns a matcher that matches attribute maps the include an attribute with the given name, and whose value matches the given matcher.
      Parameters:
      key - attribute name
      value - attribute value matcher
      Returns:
      a Map<String, Object> matcher

    • anyOf

      @SafeVarargs public static <T> Matcher<T> anyOf(Matcher<? super T>... matchers)
      Returns a matcher that matches when against objects which match any of the supplied matchers.
      Type Parameters:
      T - type of the object to be matched
      Parameters:
      matchers - list of matchers to match
      Returns:
      a compound matcher

    • allOf

      @SafeVarargs public static <T> Matcher<T> allOf(Matcher<? super T>... matchers)
      Returns a matcher that matches when against objects which match all of the supplied matchers.
      Type Parameters:
      T - type of the object to be matched
      Parameters:
      matchers - list of matchers to match
      Returns:
      a compound matcher

    • not

      public static <T> Matcher<T> not(Matcher<T> matcher)