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/*
* Copyright © 2018 European Support Limited
*
* 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.openecomp.sdc.vendorsoftwareproduct.services.schemagenerator;
import freemarker.template.Template;
import freemarker.template.TemplateException;
import org.openecomp.sdc.common.errors.CoreException;
import org.openecomp.sdc.common.errors.ErrorCategory;
import org.openecomp.sdc.common.errors.ErrorCode;
import org.openecomp.sdc.vendorsoftwareproduct.types.composition.CompositionEntityType;
import org.openecomp.sdc.vendorsoftwareproduct.types.schemagenerator.SchemaTemplateContext;
import org.openecomp.sdc.vendorsoftwareproduct.types.schemagenerator.SchemaTemplateInput;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
public class SchemaGenerator {
public static final String SCHEMA_GENERATION_ERROR = "SCHEMA_GENERATION_ERROR";
private SchemaGenerator() {
// Utility classes, which are a collection of static members, are not meant to be instantiated
}
/**
* Generate string.
*
* @param schemaTemplateContext the schema template context
* @param entityType the entity type
* @param input the input
* @return the string
*/
public static String generate(SchemaTemplateContext schemaTemplateContext,
CompositionEntityType entityType, SchemaTemplateInput input) {
Template schemaTemplate =
SchemaGeneratorConfig.getSchemaTemplate(schemaTemplateContext, entityType);
return processTemplate(input, schemaTemplate);
}
private static String processTemplate(SchemaTemplateInput input, Template schemaTemplate) {
try (Writer writer = new StringWriter(1024)) {
schemaTemplate.process(input, writer);
return writer.toString();
} catch (IOException | TemplateException exception) {
throw new CoreException(
new ErrorCode.ErrorCodeBuilder().withCategory(ErrorCategory.APPLICATION)
.withId(SCHEMA_GENERATION_ERROR).withMessage(exception.getMessage()).build(), exception);
}
}
}
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