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| <title>javax.xml.transform.sax</title> |
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| <p>This package implements SAX2-specific transformation APIs. It provides |
| classes which allow input from {@link org.xml.sax.ContentHandler} |
| events, and also classes that produce org.xml.sax.ContentHandler events. It |
| also provides methods to set the input source as an |
| {@link org.xml.sax.XMLReader}, or to use a |
| {@link org.xml.sax.InputSource} as the source. It also allows the |
| creation of a {@link org.xml.sax.XMLFilter}, which enables |
| transformations to "pull" from other transformations, and lets the transformer |
| to be used polymorphically as an {@link org.xml.sax.XMLReader}.</p> |
| <p>The {@link javax.xml.transform.sax.SAXSource} class allows the |
| setting of an {@link org.xml.sax.XMLReader} to be used for "pulling" |
| parse events, and an {@link org.xml.sax.InputSource} that may be used to |
| specify the SAX source.</p> |
| <p>The {@link javax.xml.transform.sax.SAXResult} class allows the |
| setting of a {@link org.xml.sax.ContentHandler} to be the receiver of |
| SAX2 events from the transformation. |
| <p>The {@link javax.xml.transform.sax.SAXTransformerFactory} extends |
| {@link javax.xml.transform.TransformerFactory} to provide factory |
| methods for creating {@link javax.xml.transform.sax.TemplatesHandler}, |
| {@link javax.xml.transform.sax.TransformerHandler}, and |
| {@link org.xml.sax.XMLReader} instances.</p> |
| <p>To obtain a {@link javax.xml.transform.sax.SAXTransformerFactory}, |
| the caller must cast the {@link javax.xml.transform.TransformerFactory} |
| instance returned from |
| {@link javax.xml.transform.TransformerFactory#newInstance}. |
| |
| <p>The {@link javax.xml.transform.sax.TransformerHandler} interface |
| allows a transformation to be created from SAX2 parse events, which is a "push" |
| model rather than the "pull" model that normally occurs for a transformation. |
| Normal parse events are received through the |
| {@link org.xml.sax.ContentHandler} interface, lexical events such as |
| startCDATA and endCDATA are received through the |
| {@link org.xml.sax.ext.LexicalHandler} interface, and events that signal |
| the start or end of disabling output escaping are received via |
| {@link org.xml.sax.ContentHandler#processingInstruction}, with the |
| target parameter being |
| {@link javax.xml.transform.Result#PI_DISABLE_OUTPUT_ESCAPING} and |
| {@link javax.xml.transform.Result#PI_ENABLE_OUTPUT_ESCAPING}. If |
| parameters, output properties, or other features need to be set on the |
| Transformer handler, a {@link javax.xml.transform.Transformer} reference |
| will need to be obtained from |
| {@link javax.xml.transform.sax.TransformerHandler#getTransformer}, and |
| the methods invoked from that reference. |
| |
| <p>The {@link javax.xml.transform.sax.TemplatesHandler} interface |
| allows the creation of {@link javax.xml.transform.Templates} objects |
| from SAX2 parse events. Once the {@link org.xml.sax.ContentHandler} |
| events are complete, the Templates object may be obtained from |
| {@link javax.xml.transform.sax.TemplatesHandler#getTemplates}. Note that |
| {@link javax.xml.transform.sax.TemplatesHandler#setSystemId} should |
| normally be called in order to establish a base system ID from which relative |
| URLs may be resolved. |
| <p>The |
| {@link javax.xml.transform.sax.SAXTransformerFactory#newXMLFilter} |
| method allows the creation of a {@link org.xml.sax.XMLFilter}, which |
| encapsulates the SAX2 notion of a "pull" transformation. The following |
| illustrates several transformations chained together. Each filter points to a |
| parent {@link org.xml.sax.XMLReader}, and the final transformation is |
| caused by invoking {@link org.xml.sax.XMLReader#parse} on the final |
| reader in the chain.</p> |
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