| /* |
| * 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.tools.ant.types.spi; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.Writer; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.tools.ant.ProjectComponent; |
| import org.apache.tools.ant.BuildException; |
| |
| /** |
| * ANT Jar-Task SPI extension |
| * |
| * @see <a href="http://issues.apache.org/bugzilla/show_bug.cgi?id=31520"> |
| * http://issues.apache.org/bugzilla/show_bug.cgi?id=31520</a> |
| */ |
| public class Service extends ProjectComponent { |
| private List providerList = new ArrayList(); |
| private String type; |
| |
| /** |
| * Set the provider classname. |
| * @param className the classname of a provider of this service. |
| */ |
| public void setProvider(String className) { |
| Provider provider = new Provider(); |
| provider.setClassName(className); |
| providerList.add(provider); |
| } |
| |
| /** |
| * Add a nested provider element. |
| * @param provider a provider element. |
| */ |
| public void addConfiguredProvider(Provider provider) { |
| provider.check(); |
| providerList.add(provider); |
| } |
| |
| /** |
| * @return the service type. |
| */ |
| public String getType() { |
| return type; |
| } |
| |
| /** |
| * Set the service type. |
| * @param type the service type, a classname of |
| * an interface or a class (normally |
| * abstract). |
| */ |
| public void setType(String type) { |
| this.type = type; |
| } |
| |
| /** |
| * Return the implementations of this |
| * services as an inputstream. |
| * @return an inputstream of the classname names |
| * encoded as UTF-8. |
| * @throws IOException if there is an error. |
| */ |
| public InputStream getAsStream() throws IOException { |
| ByteArrayOutputStream arrayOut; |
| Writer writer; |
| Iterator providerIterator; |
| Provider provider; |
| |
| arrayOut = new ByteArrayOutputStream(); |
| writer = new OutputStreamWriter(arrayOut, "UTF-8"); |
| providerIterator = providerList.iterator(); |
| while (providerIterator.hasNext()) { |
| provider = (Provider) providerIterator.next(); |
| writer.write(provider.getClassName()); |
| writer.write("\n"); |
| } |
| writer.close(); |
| return new ByteArrayInputStream(arrayOut.toByteArray()); |
| } |
| |
| /** |
| * Check if this object is configured correctly as a nested |
| * element. |
| */ |
| public void check() { |
| if (type == null) { |
| throw new BuildException( |
| "type attribute must be set for service element", |
| getLocation()); |
| } |
| if (type.length() == 0) { |
| throw new BuildException( |
| "Invalid empty type classname", getLocation()); |
| } |
| if (providerList.size() == 0) { |
| throw new BuildException( |
| "provider attribute or nested provider element must be set!", |
| getLocation()); |
| } |
| } |
| } |