XML Schema API: Interface XSNamedMap

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## org.apache.xerces.xs
Interface XSNamedMap

public interface XSNamedMap

Objects implementing the `XSNamedMap` interface are used to represent immutable collections of XML Schema components that can be accessed by name. Note that `XSNamedMap` does not inherit from `XSObjectList`. The `XSObject`s in `XSNamedMap`s are not maintained in any particular order.

Method Summary
`int` | `getLength()` The number of `XSObjects` in the `XSObjectList`.
`XSObject` | `item(int index)` Returns the `index`th item in the collection or `null` if `index` is greater than or equal to the number of objects in the list.
`XSObject` | `itemByName(java.lang.String namespace, java.lang.String localName)` Retrieves an `XSObject` specified by local name and namespace URI.

Method Detail

### getLength

    public int getLength()

  The number of `XSObjects` in the `XSObjectList`. The range of valid child object indices is 0 to `length-1` inclusive.

### item

    public XSObject item(int index)

  Returns the `index`th item in the collection or `null` if `index` is greater than or equal to the number of objects in the list. The index starts at 0.
  Parameters:
    `index` - index into the collection.
  Returns:
    The `XSObject` at the `index`th position in the `XSObjectList`, or `null` if the index specified is not valid.

### itemByName

    public XSObject itemByName(java.lang.String namespace,
                               java.lang.String localName)

  Retrieves an `XSObject` specified by local name and namespace URI.
  Per XML Namespaces, applications must use the value `null` as the `namespace` parameter for methods if they wish to specify no namespace.
  Parameters:
    `namespace` - The namespace URI of the `XSObject` to retrieve, or `null` if the `XSObject` has no namespace.
    `localName` - The local name of the `XSObject` to retrieve.
  Returns:
    A `XSObject` (of any type) with the specified local name and namespace URI, or `null` if they do not identify any object in this map.

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