Check a vendor's DOM implementation
/*--
Copyright (C) 2001 Brett McLaughlin.
All rights reserved.
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written permission, please contact brett@newInstance.com.
In addition, we request (but do not require) that you include in the
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software itself an acknowledgement equivalent to the following:
"This product includes software developed for the
'Java and XML' book, by Brett McLaughlin (O'Reilly & Associates)."
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE JDOM AUTHORS OR THE PROJECT
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
import org.w3c.dom.DOMImplementation;
/**
* <b><code>DOMModuleChecker</code></b> checks a vendor's DOM
* implementation, and sees which modules that implementation
* makes available.
*/
public class DOMModuleChecker {
/** Vendor DOMImplementation impl class */
private String vendorImplementationClass =
"org.apache.xerces.dom.DOMImplementationImpl";
/** Modules to check */
private String[] moduleNames =
{"XML", "Views", "Events", "CSS", "Traversal", "Range", "HTML"};
/**
* <p>No args constructor uses Apache Xerces DOM
* implementation.</p>
*/
public DOMModuleChecker() {
}
/**
* <p>This takes the DOM implementation class to use<p>
*
* @param vendorImplementationClass class to use.
*/
public DOMModuleChecker(String vendorImplementationClass) {
this.vendorImplementationClass = vendorImplementationClass;
}
/**
* <p>This method does the actual work of checking the provided
* DOM implementation for the modules it supports.</p>
*
* @throws <code>Exception</code> - generic exception handling.
*/
public void check() throws Exception {
DOMImplementation impl =
(DOMImplementation)Class.forName(vendorImplementationClass)
.newInstance();
for (int i=0; i<moduleNames.length; i++) {
if (impl.hasFeature(moduleNames[i], "2.0")) {
System.out.println("Support for " + moduleNames[i] +
" is included in this DOM implementation.");
} else {
System.out.println("Support for " + moduleNames[i] +
" is not included in this DOM implementation.");
}
}
}
/**
* <p>Provide a static entry point.</p>
*/
public static void main(String[] args) {
if ((args.length != 0) && (args.length != 1)) {
System.out.println("Usage: java DOMModuleChecker " +
"[DOMImplementation impl class to query]");
System.exit(-1);
}
try {
DOMModuleChecker checker = null;
if (args.length == 1) {
checker = new DOMModuleChecker(args[1]);
} else {
checker = new DOMModuleChecker();
}
checker.check();
} catch (Exception e) {
e.printStackTrace();
}
}
}
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