2 * Copyright © 2018 European Support Limited
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package org.openecomp.sdc.vendorsoftwareproduct.services.schemagenerator;
19 import freemarker.template.Template;
20 import freemarker.template.TemplateException;
21 import org.openecomp.sdc.common.errors.CoreException;
22 import org.openecomp.sdc.common.errors.ErrorCategory;
23 import org.openecomp.sdc.common.errors.ErrorCode;
24 import org.openecomp.sdc.vendorsoftwareproduct.types.composition.CompositionEntityType;
25 import org.openecomp.sdc.vendorsoftwareproduct.types.schemagenerator.SchemaTemplateContext;
26 import org.openecomp.sdc.vendorsoftwareproduct.types.schemagenerator.SchemaTemplateInput;
28 import java.io.IOException;
29 import java.io.StringWriter;
30 import java.io.Writer;
32 public class SchemaGenerator {
33 public static final String SCHEMA_GENERATION_ERROR = "SCHEMA_GENERATION_ERROR";
34 private SchemaGenerator() {
35 // Utility classes, which are a collection of static members, are not meant to be instantiated
41 * @param schemaTemplateContext the schema template context
42 * @param entityType the entity type
43 * @param input the input
46 public static String generate(SchemaTemplateContext schemaTemplateContext,
47 CompositionEntityType entityType, SchemaTemplateInput input) {
48 Template schemaTemplate =
49 SchemaGeneratorConfig.getSchemaTemplate(schemaTemplateContext, entityType);
50 return processTemplate(input, schemaTemplate);
53 private static String processTemplate(SchemaTemplateInput input, Template schemaTemplate) {
54 try (Writer writer = new StringWriter(1024)) {
55 schemaTemplate.process(input, writer);
56 return writer.toString();
57 } catch (IOException | TemplateException exception) {
58 throw new CoreException(
59 new ErrorCode.ErrorCodeBuilder().withCategory(ErrorCategory.APPLICATION)
60 .withId(SCHEMA_GENERATION_ERROR).withMessage(exception.getMessage()).build(), exception);