java.lang.Object
org.apache.commons.jxpath.JXPathContextFactory
- public abstract class JXPathContextFactory
- extends java.lang.Object
Defines a factory API that enables applications to obtain a
JXPathContext instance. To acquire a JXPathContext, first call the
static newInstance() method of JXPathContextFactory.
This method returns a concrete JXPathContextFactory.
Then call newContext() on that instance. You will rarely
need to perform these steps explicitly: usually you can call one of the
JXPathContex.newContext methods, which will perform these steps
for you.
- Version:
- $Revision: 1.8 $ $Date: 2004/02/29 14:17:42 $
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
FACTORY_NAME_PROPERTY
public static final java.lang.String FACTORY_NAME_PROPERTY
- The default property
- See Also:
- Constant Field Values
DEFAULT_FACTORY_CLASS
private static final java.lang.String DEFAULT_FACTORY_CLASS
- The default factory class
- See Also:
- Constant Field Values
factoryImplName
private static java.lang.String factoryImplName
- Avoid reading all the files when the findFactory
method is called the second time ( cache the result of
finding the default impl )
debug
private static boolean debug
- Temp debug code - this will be removed after we test everything
JXPathContextFactory
protected JXPathContextFactory()
newInstance
public static JXPathContextFactory newInstance()
- Obtain a new instance of a
JXPathContextFactory.
This static method creates a new factory instance.
This method uses the following ordered lookup procedure to determine
the JXPathContextFactory implementation class to load:
-
Use the
org.apache.commons.jxpath.JXPathContextFactory
system property.
-
Alternatively, use the JAVA_HOME (the parent directory where jdk is
installed)/lib/jxpath.properties for a property file that contains the
name of the implementation class keyed on
org.apache.commons.jxpath.JXPathContextFactory.
-
Use the Services API (as detailed in the JAR specification), if
available, to determine the classname. The Services API will look
for a classname in the file
META- INF/services/org.apache.commons.jxpath.
JXPathContextFactory in jars available to the runtime.
-
Platform default
JXPathContextFactory instance.
Once an application has obtained a reference to a
JXPathContextFactory it can use the factory to
obtain JXPathContext instances.
newContext
public abstract JXPathContext newContext(JXPathContext parentContext,
java.lang.Object contextBean)
throws JXPathContextFactoryConfigurationError
- Creates a new instance of a JXPathContext using the
currently configured parameters.
findFactory
private static java.lang.String findFactory(java.lang.String property,
java.lang.String defaultFactory)
- Private implementation method - will find the implementation
class in the specified order.
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