ENTAXY-480 release version 1.8.3

platform/runtime/base/connecting/generator/generator-api/src/main/java/ru/entaxy/base/generator/template/impl/TemplateServiceURLResolver.java

@@ -0,0 +1,64 @@
+/*-
+ * ~~~~~~licensing~~~~~~
+ * generator-api
+ * ==========
+ * Copyright (C) 2020 - 2023 EmDev LLC
+ * ==========
+ * 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.
+ * ~~~~~~/licensing~~~~~~
+ */
+package ru.entaxy.base.generator.template.impl;
+
+import java.io.IOException;
+import java.net.URL;
+import java.net.URLConnection;
+
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.osgi.service.url.AbstractURLStreamHandlerService;
+import org.osgi.service.url.URLStreamHandlerService;
+
+import ru.entaxy.base.generator.template.Template;
+import ru.entaxy.base.generator.template.TemplateService;
+
+@Component(service = URLStreamHandlerService.class, property = "url.handler.protocol=templates", immediate = true)
+public class TemplateServiceURLResolver extends AbstractURLStreamHandlerService {
+
+	@Reference(cardinality = ReferenceCardinality.MANDATORY)
+	TemplateService templateService;
+	
+	@Override
+	public URLConnection openConnection(URL url) throws IOException {
+		String templateId = url.toString();
+		templateId = templateId.replace("templates:", "");
+		templateId = templateId.replace("/", ".");
+		
+		Template template = templateService.getTemplateById(templateId);
+		if (template == null) {
+			// we'll try without file extension
+			int index = templateId.lastIndexOf(".");
+			if (index>0)
+				templateId = templateId.substring(0, index);
+			template = templateService.getTemplateById(templateId);
+		}
+
+		if (template == null)
+			return null;
+		
+		String templateUrl = template.getTemplateLocation().toString() + template.getTemplateFullName();
+		URL resultUrl = new URL(templateUrl);
+		return resultUrl.openConnection();
+	}
+
+}