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## org.jfree.data.xml
Class KeyHandler

    java.lang.Object
      org.xml.sax.helpers.DefaultHandler
          org.jfree.data.xml.KeyHandler

All Implemented Interfaces:
  DatasetTags, org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler

    public class KeyHandler

extends org.xml.sax.helpers.DefaultHandler
implements DatasetTags

A SAX handler for reading a key.

Field Summary

Fields inherited from interface org.jfree.data.xml.DatasetTags
`CATEGORYDATASET_TAG, ITEM_TAG, KEY_TAG, PIEDATASET_TAG, SERIES_TAG, VALUE_TAG`

Constructor Summary
`KeyHandler(RootHandler rootHandler, ItemHandler itemHandler)` Creates a new handler.

Method Summary
`void` | `characters(char[] ch, int start, int length)` Receives some (or all) of the text in the current element.
`protected void` | `clearCurrentText()` Removes all text from the textbuffer at the end of a CDATA section.
`void` | `endElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String qName)` The end of an element.
`protected java.lang.String` | `getCurrentText()` Returns the current text of the textbuffer.
`void` | `startElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes atts)` The start of an element.

Methods inherited from class org.xml.sax.helpers.DefaultHandler
`endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl, warning`

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

Constructor Detail

### KeyHandler

    public KeyHandler(RootHandler rootHandler,
                      ItemHandler itemHandler)

  Creates a new handler.

  Parameters:
    `rootHandler` - the root handler.
    `itemHandler` - the item handler.

Method Detail

### startElement

    public void startElement(java.lang.String namespaceURI,
                             java.lang.String localName,
                             java.lang.String qName,
                             org.xml.sax.Attributes atts)
                      throws org.xml.sax.SAXException

  The start of an element.

  Specified by:
    `startElement` in interface `org.xml.sax.ContentHandler`
  Overrides:
    `startElement` in class `org.xml.sax.helpers.DefaultHandler`
  Parameters:
    `namespaceURI` - the namespace.
    `localName` - the element name.
    `qName` - the element name.
    `atts` - the attributes.
  Throws:
    `org.xml.sax.SAXException` - for errors.

### endElement

    public void endElement(java.lang.String namespaceURI,
                           java.lang.String localName,
                           java.lang.String qName)
                    throws org.xml.sax.SAXException

  The end of an element.

  Specified by:
    `endElement` in interface `org.xml.sax.ContentHandler`
  Overrides:
    `endElement` in class `org.xml.sax.helpers.DefaultHandler`
  Parameters:
    `namespaceURI` - the namespace.
    `localName` - the element name.
    `qName` - the element name.
  Throws:
    `org.xml.sax.SAXException` - for errors.

### characters

    public void characters(char[] ch,
                           int start,
                           int length)

  Receives some (or all) of the text in the current element.

  Specified by:
    `characters` in interface `org.xml.sax.ContentHandler`
  Overrides:
    `characters` in class `org.xml.sax.helpers.DefaultHandler`
  Parameters:
    `ch` - character buffer.
    `start` - the start index.
    `length` - the length of the valid character data.

### getCurrentText

    protected java.lang.String getCurrentText()

  Returns the current text of the textbuffer.

  Returns:
    The current text.

### clearCurrentText

    protected void clearCurrentText()

  Removes all text from the textbuffer at the end of a CDATA section.

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