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25 
26 package javax.xml.transform;
27 
28 import java.util.Properties;
29 
30 
31 
32 
33 /**
34  * An object that implements this interface is the runtime representation of processed
35  * transformation instructions.
36  *
37  * <p>Templates must be threadsafe for a given instance
38  * over multiple threads running concurrently, and may
39  * be used multiple times in a given session.</p>
40  */
41 public interface Templates {
42 
43     /**
44      * Create a new transformation context for this Templates object.
45      *
46      * @return A valid non-null instance of a Transformer.
47      *
48      * @throws TransformerConfigurationException if a Transformer can not be created.
49      */
newTransformer()50     Transformer newTransformer() throws TransformerConfigurationException;
51 
52     /**
53      * Get the properties corresponding to the effective xsl:output element.
54      * The object returned will
55      * be a clone of the internal values. Accordingly, it can be mutated
56      * without mutating the Templates object, and then handed in to
57      * {@link javax.xml.transform.Transformer#setOutputProperties}.
58      *
59      * <p>The properties returned should contain properties set by the stylesheet,
60      * and these properties are "defaulted" by default properties specified by
61      * <a href="http://www.w3.org/TR/xslt#output">section 16 of the
62      * XSL Transformations (XSLT) W3C Recommendation</a>.  The properties that
63      * were specifically set by the stylesheet should be in the base
64      * Properties list, while the XSLT default properties that were not
65      * specifically set should be in the "default" Properties list.  Thus,
66      * getOutputProperties().getProperty(String key) will obtain any
67      * property in that was set by the stylesheet, <em>or</em> the default
68      * properties, while
69      * getOutputProperties().get(String key) will only retrieve properties
70      * that were explicitly set in the stylesheet.</p>
71      *
72      * <p>For XSLT,
73      * <a href="http://www.w3.org/TR/xslt#attribute-value-templates">Attribute
74      * Value Templates</a> attribute values will
75      * be returned unexpanded (since there is no context at this point).  The
76      * namespace prefixes inside Attribute Value Templates will be unexpanded,
77      * so that they remain valid XPath values.</p>
78      *
79      * @return A Properties object, never null.
80      */
getOutputProperties()81     Properties getOutputProperties();
82 }
83