Author: bbrodt Date: 2010-05-20 12:31:36 -0400 (Thu, 20 May 2010) New Revision: 22217 Added: trunk/bpel/plugins/org.eclipse.bpel.ui/src/org/eclipse/bpel/ui/BPELContentDescriber.java Log: https://jira.jboss.org/browse/JBIDE-6006 https://jira.jboss.org/browse/JBIDE-6093 Had to roll my own BPEL Content Describer class - XMLRootElementContentDescriber2 has some...strange behavior Added: trunk/bpel/plugins/org.eclipse.bpel.ui/src/org/eclipse/bpel/ui/BPELContentDescriber.java =================================================================== --- trunk/bpel/plugins/org.eclipse.bpel.ui/src/org/eclipse/bpel/ui/BPELContentDescriber.java (rev 0) +++ trunk/bpel/plugins/org.eclipse.bpel.ui/src/org/eclipse/bpel/ui/BPELContentDescriber.java 2010-05-20 16:31:36 UTC (rev 22217) @@ -0,0 +1,104 @@ +/******************************************************************************* + * Copyright (c) 2010 Red Hat, Inc. + * Distributed under license by Red Hat, Inc. All rights reserved. + * This program is made available under the terms of the + * Eclipse Public License v1.0 which accompanies this distribution, + * and is available at http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * Red Hat, Inc. - initial API and implementation + ******************************************************************************/ + +package org.eclipse.bpel.ui; + +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.Reader; + +import org.apache.xerces.parsers.SAXParser; +import org.apache.xerces.xni.Augmentations; +import org.apache.xerces.xni.QName; +import org.apache.xerces.xni.XMLAttributes; +import org.apache.xerces.xni.XNIException; +import org.eclipse.core.runtime.QualifiedName; +import org.eclipse.core.runtime.content.IContentDescription; +import org.eclipse.core.runtime.content.ITextContentDescriber; +import org.xml.sax.InputSource; + +/** + * @author Bob Brodt + * + * added for https://jira.jboss.org/browse/JBIDE-6006 + */ +public class BPELContentDescriber implements ITextContentDescriber { + + private static final String WSBPEL_2_NAMESPACE = "http://docs.oasis-open.org/wsbpel/2.0/process/executable"; //$NON-NLS-1$ + private static final String ROOT_ELEMENT = "process"; //$NON-NLS-1$ + + private RootElementParser parser; + + public BPELContentDescriber() { + } + + public int describe(Reader contents, IContentDescription description) throws IOException { + return doDescribe(contents) == null ? INVALID : VALID; + } + + public int describe(InputStream contents, IContentDescription description) throws IOException { + return describe(new InputStreamReader(contents), description); + } + + private synchronized String doDescribe(Reader contents) throws IOException { + try { + InputSource source = new InputSource(contents); + parser = new RootElementParser(); + parser.parse(source); + } catch (AcceptedException e) { + return e.acceptedRootElement; + } catch (RejectedException e) { + return null; + } catch (Exception e) { + return null; + } + finally { + parser = null; + } + + return null; + } + + public QualifiedName[] getSupportedOptions() { + return null; + } + + private class RootElementParser extends SAXParser { + public void startElement(QName qName, XMLAttributes attributes, Augmentations augmentations) throws XNIException { + + super.startElement(qName, attributes, augmentations); + + if (ROOT_ELEMENT.equals(qName.localpart)) { + String namespace = fNamespaceContext.getURI(qName.prefix); + if (WSBPEL_2_NAMESPACE.equals(namespace)) + throw new AcceptedException(qName.localpart); + else + throw new RejectedException(); + } else + throw new RejectedException(); + } + } + + private class AcceptedException extends RuntimeException { + public String acceptedRootElement; + + public AcceptedException(String acceptedRootElement) { + this.acceptedRootElement = acceptedRootElement; + } + + private static final long serialVersionUID = 1L; + } + + private class RejectedException extends RuntimeException { + private static final long serialVersionUID = 1L; + } +}