org.apache.xerces.impl
Class XMLDocumentScannerImpl.ContentDispatcher

java.lang.Object
  extended by org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.FragmentContentDispatcher
      extended by 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.
Throws:
java.io.IOException
org.apache.xerces.xni.XNIException

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.
Throws:
java.io.IOException
org.apache.xerces.xni.XNIException

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.
Throws:
java.io.IOException
org.apache.xerces.xni.XNIException

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
Throws:
java.io.IOException
org.apache.xerces.xni.XNIException

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.

Throws:
java.io.IOException
org.apache.xerces.xni.XNIException


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