Package org.opensaml.core.xml.util

Class XMLObjectChildrenList<ElementType extends XMLObject>

java.lang.Object
java.util.AbstractCollection<E>
java.util.AbstractList<ElementType>
org.opensaml.core.xml.util.XMLObjectChildrenList<ElementType>
Type Parameters:
ElementType - type of elements added to the list
All Implemented Interfaces:
Iterable<ElementType>, Collection<ElementType>, List<ElementType>
Direct Known Subclasses:
IndexedXMLObjectChildrenList
public class XMLObjectChildrenList<ElementType extends XMLObject> extends AbstractList<ElementType>
Resizable list for the children of XMLObjects. This list implements all optional List operations and does nothing for null elements. XMLObjects added to, or removed from, this list will have their parent object appropriately set and, the underlying DOM will be released during mutation opertions.

  • Field Details

    • parent

      private final XMLObject parent
      Parent to the elements in this list.

    • elements

      private final List<ElementType extends XMLObject> elements
      List of elements.

  • Constructor Details

    • XMLObjectChildrenList

      public XMLObjectChildrenList(@Nonnull XMLObject newParent)
      Constructs an empty list with all added XMLObjects being assigned the given parent XMLObject.
      Parameters:
      newParent - the parent for all the added XMLObjects

    • XMLObjectChildrenList

      public XMLObjectChildrenList(@Nonnull XMLObject newParent, @Nonnull Collection<ElementType> newElements)
      Constructs a list containing the elements in the specified collection, in the order they are returned by the collection's iterator, with each added XMLObject assigned the given parent XMLObject.

      An IllegalArgumentException is thrown if any of the XMLObjects in the given collection already have a parent other than the given parent

      Parameters:
      newParent - the parent for all the added XMLObjects
      newElements - the elements to be added

  • Method Details

    • size

      public int size()
      Specified by:
      size in interface Collection<ElementType extends XMLObject>
      Specified by:
      size in interface List<ElementType extends XMLObject>
      Specified by:
      size in class AbstractCollection<ElementType extends XMLObject>

    • contains

      public boolean contains(@Nonnull ElementType element)
      Checks to see if the given element is contained in this list.
      Parameters:
      element - the element to check for
      Returns:
      true iff the element is in this list

    • get

      @Nonnull public ElementType get(int index)
      Specified by:
      get in interface List<ElementType extends XMLObject>
      Specified by:
      get in class AbstractList<ElementType extends XMLObject>

    • set

      @Nullable public ElementType set(int index, @Nullable ElementType element)
      Replaces the XMLObject at the specified index with the given element. A null input is ignored and returned.

      An IllegalArgumentException is thrown if the given XMLObject already has a parent other than the parent given at list construction time.

      Specified by:
      set in interface List<ElementType extends XMLObject>
      Overrides:
      set in class AbstractList<ElementType extends XMLObject>
      Parameters:
      index - index of the XMLObject to be replaced
      element - element to be stored at the given index
      Returns:
      the replaced XMLObject

    • add

      public void add(int index, @Nullable ElementType element)
      Adds the given XMLObject to this list. A null element is ignored, as is an element already in the list.

      An IllegalArgumentException is thrown if the given XMLObject already has a parent other than the parent given at list construction time.

      Specified by:
      add in interface List<ElementType extends XMLObject>
      Overrides:
      add in class AbstractList<ElementType extends XMLObject>
      Parameters:
      index - index at which to add the given XMLObject
      element - element to be stored at the given index

    • remove

      @Nonnull public ElementType remove(int index)
      Specified by:
      remove in interface List<ElementType extends XMLObject>
      Overrides:
      remove in class AbstractList<ElementType extends XMLObject>

    • remove

      public boolean remove(@Nullable ElementType element)
      Removes the element from the list.
      Parameters:
      element - the element to be removed
      Returns:
      true iff the element was in the list and removed

    • setParent

      protected void setParent(@Nonnull ElementType element)
      Assigned the parent, given at list construction, to the given element if the element does not have a parent or its parent matches the one given at list construction time.

      An IllegalArgumentException is thrown if the given XMLObject already has a parent other than the parent given at list construction time.

      Parameters:
      element - the element to set the parent on