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## org.apache.xerces.impl
Class XMLDocumentScannerImpl.ContentDispatcher

    java.lang.Object
      |
      +--org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.FragmentContentDispatcher
            |
            +--org.apache.xerces.impl.XMLDocumentScannerImpl.ContentDispatcher

All Implemented Interfaces:
  XMLDocumentFragmentScannerImpl.Dispatcher

Direct Known Subclasses:
  XML11NSDocumentScannerImpl.NS11ContentDispatcher, XMLNSDocumentScannerImpl.NSContentDispatcher

Enclosing class:
  XMLDocumentScannerImpl

protected class XMLDocumentScannerImpl.ContentDispatcher
extends XMLDocumentFragmentScannerImpl.FragmentContentDispatcher

Dispatcher to handle content scanning.

Author:
  Andy Clark, IBM, Eric Ye, IBM

Constructor Summary
`protected` | `XMLDocumentScannerImpl.ContentDispatcher()`

Method Summary
`protected boolean` | `elementDepthIsZeroHook()` Element depth iz zero.
`protected void` | `endOfFileHook(java.io.EOFException e)` End of file hook.
`protected void` | `resolveExternalSubsetAndRead()` Attempt to locate an external subset for a document that does not otherwise have one.
`protected boolean` | `scanForDoctypeHook()` Scan for DOCTYPE hook.
`protected boolean` | `scanRootElementHook()` Scan for root element hook.

Methods inherited from class org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.FragmentContentDispatcher
`dispatch`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### XMLDocumentScannerImpl.ContentDispatcher

    protected XMLDocumentScannerImpl.ContentDispatcher()

Method Detail

### scanForDoctypeHook

    protected boolean scanForDoctypeHook()
                                  throws java.io.IOException,
                                         org.apache.xerces.xni.XNIException

  Scan for DOCTYPE hook. This method is a hook for subclasses to add code to handle scanning for a the "DOCTYPE" string after the string "
  Overrides:
    `scanForDoctypeHook` in class `XMLDocumentFragmentScannerImpl.FragmentContentDispatcher`
  Returns:
    True if the "DOCTYPE" was scanned; false if "DOCTYPE" was not scanned.

### elementDepthIsZeroHook

    protected boolean elementDepthIsZeroHook()
                                      throws java.io.IOException,
                                             org.apache.xerces.xni.XNIException

  Element depth iz zero. This methos is a hook for subclasses to add code to handle when the element depth hits zero. When scanning a document fragment, an element depth of zero is normal. However, when scanning a full XML document, the scanner must handle the trailing miscellanous section of the document after the end of the document's root element.
  Overrides:
    `elementDepthIsZeroHook` in class `XMLDocumentFragmentScannerImpl.FragmentContentDispatcher`
  Returns:
    True if the caller should stop and return true which allows the scanner to switch to a new scanning dispatcher. A return value of false indicates that the content dispatcher should continue as normal.

### scanRootElementHook

    protected boolean scanRootElementHook()
                                   throws java.io.IOException,
                                          org.apache.xerces.xni.XNIException

  Scan for root element hook. This method is a hook for subclasses to add code that handles scanning for the root element. When scanning a document fragment, there is no "root" element. However, when scanning a full XML document, the scanner must handle the root element specially.
  Overrides:
    `scanRootElementHook` in class `XMLDocumentFragmentScannerImpl.FragmentContentDispatcher`
  Returns:
    True if the caller should stop and return true which allows the scanner to switch to a new scanning dispatcher. A return value of false indicates that the content dispatcher should continue as normal.

### endOfFileHook

    protected void endOfFileHook(java.io.EOFException e)
                          throws java.io.IOException,
                                 org.apache.xerces.xni.XNIException

  End of file hook. This method is a hook for subclasses to add code that handles the end of file. The end of file in a document fragment is OK if the markup depth is zero. However, when scanning a full XML document, an end of file is always premature.
  Overrides:
    `endOfFileHook` in class `XMLDocumentFragmentScannerImpl.FragmentContentDispatcher`

### resolveExternalSubsetAndRead

    protected void resolveExternalSubsetAndRead()
                                         throws java.io.IOException,
                                                org.apache.xerces.xni.XNIException

  Attempt to locate an external subset for a document that does not otherwise have one. If an external subset is located, then it is scanned.

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