| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2002 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "The Jakarta Project", "Ant", and "Apache Software |
| * Foundation" must not be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache" |
| * nor may "Apache" appear in their names without prior written |
| * permission of the Apache Group. |
| * |
| * 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 APACHE SOFTWARE FOUNDATION OR |
| * ITS 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.ant.antcore.modelparser; |
| |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import org.apache.ant.common.model.Project; |
| import org.apache.ant.antcore.xml.ElementHandler; |
| import org.apache.ant.antcore.xml.XMLParseException; |
| import org.xml.sax.SAXParseException; |
| |
| /** |
| * The Ref handler handles the reference of one project to another. The |
| * project to be references is parsed with a new parser and then added to |
| * the current project under the given alias |
| * |
| * @author <a href="mailto:conor@apache.org">Conor MacNeill</a> |
| * @created 10 January 2002 |
| */ |
| public class RefHandler extends ElementHandler { |
| /** The attribute used to name the ref. */ |
| public static final String NAME_ATTR = "name"; |
| |
| /** The attribute name used to locate the project to be referenced. */ |
| public static final String SYSTEMID_ATTR = "project"; |
| |
| /** The project that has been referenced. */ |
| private Project referencedProject; |
| |
| /** |
| * Get the project referenced. |
| * |
| * @return an referenced Project. |
| */ |
| public Project getReferencedProject() { |
| return referencedProject; |
| } |
| |
| |
| /** |
| * Get the name under which the project is referenced. |
| * |
| * @return the ref name of the project |
| */ |
| public String getRefName() { |
| return getAttribute(NAME_ATTR); |
| } |
| |
| |
| /** |
| * Create an ref handler to reference a project. |
| * |
| * @param elementName the name of the ref element |
| * @exception SAXParseException if the ref element could not be parsed |
| */ |
| public void processElement(String elementName) |
| throws SAXParseException { |
| String refName = getAttribute(NAME_ATTR); |
| if (refName == null) { |
| throw new SAXParseException("Attribute " + NAME_ATTR + |
| " is required in a <ref> element", getLocator()); |
| } |
| |
| String projectSystemId = getAttribute(SYSTEMID_ATTR); |
| if (projectSystemId == null) { |
| throw new SAXParseException("Attribute " + SYSTEMID_ATTR + |
| " is required in a <ref> element", getLocator()); |
| } |
| |
| // create a new parser to read this project relative to the |
| // project's URI |
| try { |
| URL refURL = new URL(getElementSource(), projectSystemId); |
| ProjectHandler referencedProjectHandler = new ProjectHandler(); |
| getParseContext().parse(refURL, "project", |
| referencedProjectHandler); |
| |
| referencedProject = referencedProjectHandler.getProject(); |
| } catch (XMLParseException e) { |
| throw new SAXParseException("Error parsing referenced project " |
| + projectSystemId + ": " + e.getMessage(), getLocator(), e); |
| } catch (NoProjectReadException e) { |
| throw new SAXParseException("No project found in the reference: " |
| + projectSystemId, getLocator(), e); |
| } catch (MalformedURLException e) { |
| throw new SAXParseException("Unable to reference project " |
| + projectSystemId + ": " + e.getMessage(), |
| getLocator(), e); |
| } |
| } |
| |
| /** |
| * Validate that the given attribute and value are valid. |
| * |
| * @param attributeName The name of the attributes |
| * @param attributeValue The value of the attributes |
| * @exception SAXParseException if the attribute is not allowed on the |
| * element. |
| */ |
| protected void validateAttribute(String attributeName, |
| String attributeValue) |
| throws SAXParseException { |
| if (!attributeName.equals(SYSTEMID_ATTR) && |
| !attributeName.equals(NAME_ATTR)) { |
| throwInvalidAttribute(attributeName); |
| } |
| } |
| } |
| |
| |