/**
* 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.camel.component.xslt;
import java.lang.reflect.Method;
import java.util.List;
import java.util.Map;
import javax.xml.XMLConstants;
import javax.xml.transform.TransformerFactory;
import org.apache.camel.CamelContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
final class XsltHelper {
private static final Logger LOG = LoggerFactory.getLogger(XsltHelper.class);
private static final String SAXON_CONFIGURATION_CLASS_NAME = "net.sf.saxon.Configuration";
private static final String SAXON_EXTENDED_FUNCTION_DEFINITION_CLASS_NAME = "net.sf.saxon.lib.ExtensionFunctionDefinition";
private XsltHelper() {
}
public static void registerSaxonConfiguration(
CamelContext camelContext, Class<?> factoryClass, TransformerFactory factory, Object saxonConfiguration) throws Exception {
if (saxonConfiguration != null) {
Class<?> configurationClass = camelContext.getClassResolver().resolveClass(SAXON_CONFIGURATION_CLASS_NAME);
if (configurationClass != null) {
Method method = factoryClass.getMethod("setConfiguration", configurationClass);
if (method != null) {
method.invoke(factory, configurationClass.cast(saxonConfiguration));
}
}
}
}
public static void registerSaxonConfigurationProperties(
CamelContext camelContext, Class<?> factoryClass, TransformerFactory factory, Map<String, Object> saxonConfigurationProperties) throws Exception {
if (saxonConfigurationProperties != null && !saxonConfigurationProperties.isEmpty()) {
Method method = factoryClass.getMethod("getConfiguration");
if (method != null) {
Object configuration = method.invoke(factory, null);
if (configuration != null) {
method = configuration.getClass().getMethod("setConfigurationProperty", String.class, Object.class);
for (Map.Entry<String, Object> entry : saxonConfigurationProperties.entrySet()) {
method.invoke(configuration, entry.getKey(), entry.getValue());
}
}
}
}
}
public static void registerSaxonExtensionFunctions(
CamelContext camelContext, Class<?> factoryClass, TransformerFactory factory, List<Object> saxonExtensionFunctions) throws Exception {
if (saxonExtensionFunctions != null && !saxonExtensionFunctions.isEmpty()) {
Method method = factoryClass.getMethod("getConfiguration");
if (method != null) {
Object configuration = method.invoke(factory, null);
if (configuration != null) {
Class<?> extensionClass = camelContext.getClassResolver().resolveMandatoryClass(
SAXON_EXTENDED_FUNCTION_DEFINITION_CLASS_NAME, XsltComponent.class.getClassLoader()
);
method = configuration.getClass().getMethod("registerExtensionFunction", extensionClass);
if (method != null) {
factory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
for (Object extensionFunction : saxonExtensionFunctions) {
if (extensionClass.isInstance(extensionFunction)) {
LOG.debug("Saxon.registerExtensionFunction {}", extensionFunction);
method.invoke(configuration, extensionFunction);
}
}
} else {
LOG.warn("Unable to get reference to method registerExtensionFunction on {}", configuration.getClass().getName());
}
} else {
LOG.warn("Unable to get Saxon configuration ({}) on {}", SAXON_CONFIGURATION_CLASS_NAME, factory.getClass().getName());
}
} else {
LOG.warn("Unable to get reference to method getConfiguration on {}", factoryClass.getName());
}
}
}
}