opendaylight/config/yang-jmx-generator-plugin/src/main/java/org/opendaylight/controller/config/yangjmxgenerator/plugin/ftl/directives/ModuleFieldsDirective.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.config.yangjmxgenerator.plugin.ftl.directives;
   9
  10 import java.io.IOException;
  11 import java.io.Writer;
  12 import java.util.List;
  13 import java.util.Map;
  14
  15 import org.opendaylight.controller.config.api.JmxAttribute;
  16 import org.opendaylight.controller.config.yangjmxgenerator.plugin.ftl.AbstractModuleTemplate;
  17 import org.opendaylight.controller.config.yangjmxgenerator.plugin.ftl.model.ModuleField;
  18
  19 import com.google.common.collect.Lists;
  20
  21 import freemarker.core.Environment;
  22 import freemarker.template.SimpleSequence;
  23 import freemarker.template.TemplateDirectiveBody;
  24 import freemarker.template.TemplateDirectiveModel;
  25 import freemarker.template.TemplateException;
  26 import freemarker.template.TemplateModel;
  27
  28 /**
  29  * Add annotations to freemarker template.
  30  */
  31 public class ModuleFieldsDirective implements TemplateDirectiveModel {
  32
  33     private static final String OBJECT = "moduleFields";
  34
  35     @Override
  36     public void execute(Environment env, Map params, TemplateModel[] loopVars,
  37             TemplateDirectiveBody body) throws TemplateException, IOException {
  38         Object object = params.get(OBJECT);
  39         List<ModuleField> fields = Lists.newArrayList();
  40
  41         if (object != null) {
  42             if (object instanceof SimpleSequence)
  43                 fields = ((SimpleSequence) object).toList();
  44             else if (object instanceof AbstractModuleTemplate) {
  45                 fields = ((AbstractModuleTemplate) object).getModuleFields();
  46             } else
  47                 throw new IllegalArgumentException(
  48                         "Object must be a SimpleSequence or instance of "
  49                                 + AbstractModuleTemplate.class + "but was "
  50                                 + object.getClass());
  51         }
  52
  53         Writer out = env.getOut();
  54         StringBuilder build = new StringBuilder();
  55         for (ModuleField field : fields) {
  56             build.append("    ");
  57             build.append("protected final "
  58                     + JmxAttribute.class.getCanonicalName() + " "
  59                     + field.getName() + "JmxAttribute = new "
  60                     + JmxAttribute.class.getCanonicalName() + "(\""
  61                     + field.getAttributeName() + "\");");
  62             build.append(System.lineSeparator());
  63
  64             build.append("     private ");
  65             for (String mod : field.getModifiers()) {
  66                 build.append(mod + " ");
  67             }
  68             build.append(field.getType() + " ");
  69             build.append(field.getName());
  70             if (field.getNullableDefault() != null)
  71                 build.append(" = " + field.getNullableDefault());
  72             build.append(";");
  73
  74             if (field.isDependent()) {
  75                 String comment = field.getDependency().isMandatory() ? "mandatory"
  76                         : "optional";
  77                 build.append(" // " + comment);
  78             }
  79             build.append(System.lineSeparator());
  80
  81             build.append(System.lineSeparator());
  82
  83         }
  84
  85         if (!fields.isEmpty())
  86             out.write(build.toString().toCharArray());
  87     }
  88 }