| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.jelly.tags.ant; |
| |
| import org.apache.commons.jelly.JellyTagException; |
| import org.apache.commons.jelly.MissingAttributeException; |
| import org.apache.commons.jelly.TagSupport; |
| import org.apache.commons.jelly.XMLOutput; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| /** |
| * Tag which sets an attribute on the parent Ant Task if the given value is not null. |
| * This can be useful when setting parameters on Ant tasks, only if they have been specified |
| * via some well defined property, otherwise allowing the inbuilt default to be used. |
| * |
| * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
| */ |
| public class SetPropertyTag extends TagSupport { |
| |
| /** The Log to which logging calls will be made. */ |
| private static final Log log = LogFactory.getLog(SetPropertyTag.class); |
| |
| private String name; |
| private Object value; |
| private Object defaultValue; |
| |
| public SetPropertyTag() { |
| } |
| |
| // Tag interface |
| //------------------------------------------------------------------------- |
| public void doTag(XMLOutput output) throws MissingAttributeException, JellyTagException { |
| if (name == null) { |
| throw new MissingAttributeException("name"); |
| } |
| TaskSource tag = (TaskSource) findAncestorWithClass( TaskSource.class ); |
| if ( tag == null ) { |
| throw new JellyTagException( "This tag must be nested within an Ant task tag" ); |
| } |
| Object value = getValue(); |
| if (value == null) { |
| value = getDefault(); |
| } |
| if (value != null) { |
| tag.setTaskProperty(name, value); |
| } |
| } |
| |
| |
| // Properties |
| //------------------------------------------------------------------------- |
| |
| /** |
| * Returns the name. |
| * @return String |
| */ |
| public String getName() { |
| return name; |
| } |
| |
| /** |
| * Returns the value. |
| * @return Object |
| */ |
| public Object getValue() { |
| return value; |
| } |
| |
| /** |
| * Sets the name of the Ant task property to set. |
| * @param name The name of the Ant task property to set |
| */ |
| public void setName(String name) { |
| this.name = name; |
| } |
| |
| /** |
| * Sets the value of the Ant task property to set. |
| * @param value The value of the Ant task property to set |
| */ |
| public void setValue(Object value) { |
| this.value = value; |
| } |
| |
| /** |
| * Returns the defaultValue. |
| * @return Object |
| */ |
| public Object getDefault() { |
| return defaultValue; |
| } |
| |
| /** |
| * Sets the default value to be used if the specified value is empty. |
| */ |
| public void setDefault(Object defaultValue) { |
| this.defaultValue = defaultValue; |
| } |
| |
| } |