Module: javajava::util::Collection

Defined in:
lib/logstash/java_integration.rb

Instance Method Summary collapse

Instance Method Details

#&(other) ⇒ Object

support the Ruby intersection method on Java Collection

[View source]

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# File 'lib/logstash/java_integration.rb', line 98

def &(other)
  # transform self into a LinkedHashSet to remove duplicates and preserve order as defined by the Ruby Array intersection contract
  duped = Java::JavaUtil::LinkedHashSet.new(self)
  duped.retainAll(other)
  duped
end

#compact ⇒ Object

[View source]

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# File 'lib/logstash/java_integration.rb', line 81

def compact
  duped = Java::JavaUtil::ArrayList.new(self)
  duped.compact!
  duped
end

#compact! ⇒ Object

[View source]

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# File 'lib/logstash/java_integration.rb', line 87

def compact!
  size_before = self.size
  self.removeAll(java::util::Collections.singleton(nil))
  if size_before == self.size
    nil
  else
    self
  end
end

#delete(o) ⇒ Object

support the Ruby Array delete method on a Java Collection

[View source]

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# File 'lib/logstash/java_integration.rb', line 77

def delete(o)
  self.removeAll([o]) ? o : block_given? ? yield : nil
end

#inspect ⇒ Object

[View source]

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# File 'lib/logstash/java_integration.rb', line 113

def inspect
  "<#{self.class.name}:#{self.hashCode} #{self.to_a(&:inspect)}>"
end

#is_a?(clazz) ⇒ Boolean

have Collections objects like ArrayList report is_a?(Array) == true

Returns:

  • (Boolean)
[View source]

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# File 'lib/logstash/java_integration.rb', line 71

def is_a?(clazz)
  return true if clazz == Array
  super
end

#|(other) ⇒ Object

support the Ruby union method on Java Collection

[View source]

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# File 'lib/logstash/java_integration.rb', line 106

def |(other)
  # transform self into a LinkedHashSet to remove duplicates and preserve order as defined by the Ruby Array union contract
  duped = Java::JavaUtil::LinkedHashSet.new(self)
  duped.addAll(other)
  duped
end