/* Licensed 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.camunda.bpm.engine.impl.util;
import java.io.InputStream;
import java.nio.charset.Charset;
import org.camunda.bpm.engine.exception.NotFoundException;
import org.camunda.bpm.engine.impl.persistence.entity.DeploymentEntity;
import org.camunda.bpm.engine.impl.persistence.entity.ResourceEntity;
/**
* @author Sebastian Menski
*/
public final class ResourceUtil {
/**
* Parse a camunda:resource attribute and loads the resource depending on the url scheme.
* Supported URL schemes are <code>classpath://</code> and <code>deployment://</code>.
* If the scheme is omitted <code>classpath://</code> is assumed.
*
* @param resourcePath the path to the resource to load
* @param deployment the deployment to load resources from
* @return the resource content as {@link String}
*/
public static String loadResourceContent(String resourcePath, DeploymentEntity deployment) {
String[] pathSplit = resourcePath.split("://", 2);
String resourceType;
if (pathSplit.length == 1) {
resourceType = "classpath";
} else {
resourceType = pathSplit[0];
}
String resourceLocation = pathSplit[pathSplit.length - 1];
byte[] resourceBytes = null;
if (resourceType.equals("classpath")) {
InputStream resourceAsStream = null;
try {
resourceAsStream = ReflectUtil.getResourceAsStream(resourceLocation);
if (resourceAsStream != null) {
resourceBytes = IoUtil.readInputStream(resourceAsStream, resourcePath);
}
} finally {
IoUtil.closeSilently(resourceAsStream);
}
}
else if (resourceType.equals("deployment")) {
ResourceEntity resourceEntity = deployment.getResource(resourceLocation);
if (resourceEntity != null) {
resourceBytes = resourceEntity.getBytes();
}
}
if (resourceBytes != null) {
return new String(resourceBytes, Charset.forName("UTF-8"));
}
else {
throw new NotFoundException("Unable to find resource with name " + resourcePath);
}
}
}