binding/mdsal-binding-dom-codec/src/main/java/org/opendaylight/mdsal/binding/dom/codec/gen/impl/DataNodeContainerSerializerSource.java

   1 /*
   2  * Copyright (c) 2014, 2015 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
   9 package org.opendaylight.mdsal.binding.dom.codec.gen.impl;
  10
  11 import com.google.common.base.Preconditions;
  12 import java.util.HashMap;
  13 import java.util.Map;
  14 import org.opendaylight.mdsal.binding.dom.codec.util.ChoiceDispatchSerializer;
  15 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
  16 import org.opendaylight.mdsal.binding.model.api.MethodSignature;
  17 import org.opendaylight.mdsal.binding.model.api.ParameterizedType;
  18 import org.opendaylight.mdsal.binding.model.api.Type;
  19 import org.opendaylight.yangtools.yang.binding.BindingMapping;
  20 import org.opendaylight.yangtools.yang.binding.BindingSerializer;
  21 import org.opendaylight.yangtools.yang.binding.BindingStreamEventWriter;
  22 import org.opendaylight.yangtools.yang.binding.DataObject;
  23 import org.opendaylight.yangtools.yang.binding.DataObjectSerializerImplementation;
  24 import org.opendaylight.yangtools.yang.binding.DataObjectSerializerRegistry;
  25 import org.opendaylight.yangtools.yang.model.api.AnyXmlSchemaNode;
  26 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
  27 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  28 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
  29 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  30 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
  31 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
  32 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  33 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
  34 import org.opendaylight.yangtools.yang.model.api.TypedSchemaNode;
  35 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
  36 import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 abstract class DataNodeContainerSerializerSource extends DataObjectSerializerSource {
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(DataNodeContainerSerializerSource.class);
  43
  44     protected static final String INPUT = "_input";
  45     private static final String CHOICE_PREFIX = "CHOICE_";
  46
  47     protected final DataNodeContainer schemaNode;
  48     private final GeneratedType dtoType;
  49
  50     DataNodeContainerSerializerSource(final AbstractGenerator generator, final GeneratedType type,
  51             final DataNodeContainer node) {
  52         super(generator);
  53         this.dtoType = Preconditions.checkNotNull(type);
  54         this.schemaNode = Preconditions.checkNotNull(node);
  55     }
  56
  57     /**
  58      * Return the character sequence which should be used for start event.
  59      *
  60      * @return Start event character sequence
  61      */
  62     protected abstract CharSequence emitStartEvent();
  63
  64     @Override
  65     protected CharSequence getSerializerBody() {
  66         final StringBuilder sb = new StringBuilder();
  67         sb.append("{\n");
  68         sb.append(statement(assign(DataObjectSerializerRegistry.class.getName(), REGISTRY, "$1")));
  69         sb.append(statement(assign(dtoType.getFullyQualifiedName(), INPUT,
  70                 cast(dtoType.getFullyQualifiedName(), "$2"))));
  71         sb.append(statement(assign(BindingStreamEventWriter.class.getName(), STREAM,
  72             cast(BindingStreamEventWriter.class.getName(), "$3"))));
  73         sb.append(statement(assign(BindingSerializer.class.getName(), SERIALIZER, null)));
  74         sb.append("if (");
  75         sb.append(STREAM);
  76         sb.append(" instanceof ");
  77         sb.append(BindingSerializer.class.getName());
  78         sb.append(") {");
  79         sb.append(statement(assign(SERIALIZER, cast(BindingSerializer.class.getName(), STREAM))));
  80         sb.append('}');
  81         sb.append(statement(emitStartEvent()));
  82
  83         emitBody(sb);
  84         emitAfterBody(sb);
  85         sb.append(statement(endNode()));
  86         sb.append(statement("return null"));
  87         sb.append('}');
  88         return sb;
  89     }
  90
  91     /**
  92      * Allows for customization of emitting code, which is processed after
  93      * normal DataNodeContainer body. Ideal for augmentations or others.
  94      */
  95     protected void emitAfterBody(final StringBuilder sb) {
  96         // No-op
  97     }
  98
  99     private static Map<String, Type> collectAllProperties(final GeneratedType type, final Map<String, Type> hashMap) {
 100         for (final MethodSignature definition : type.getMethodDefinitions()) {
 101             hashMap.put(definition.getName(), definition.getReturnType());
 102         }
 103         for (final Type parent : type.getImplements()) {
 104             if (parent instanceof GeneratedType) {
 105                 collectAllProperties((GeneratedType) parent, hashMap);
 106             }
 107         }
 108         return hashMap;
 109     }
 110
 111     private static String getGetterName(final DataSchemaNode node) {
 112         final TypeDefinition<?> type;
 113         if (node instanceof TypedSchemaNode) {
 114             type = ((TypedSchemaNode) node).getType();
 115         } else {
 116             type = null;
 117         }
 118
 119         final String prefix;
 120         if (type instanceof BooleanTypeDefinition || type instanceof EmptyTypeDefinition) {
 121             prefix = "is";
 122         } else {
 123             prefix = "get";
 124         }
 125         return prefix + BindingMapping.getGetterSuffix(node.getQName());
 126     }
 127
 128     private void emitBody(final StringBuilder sb) {
 129         final Map<String, Type> getterToType = collectAllProperties(dtoType, new HashMap<String, Type>());
 130         for (final DataSchemaNode schemaChild : schemaNode.getChildNodes()) {
 131             if (!schemaChild.isAugmenting()) {
 132                 final String getter = getGetterName(schemaChild);
 133                 final Type childType = getterToType.get(getter);
 134                 if (childType == null) {
 135                     // FIXME AnyXml nodes are ignored, since their type cannot be found in generated bindnig
 136                     // Bug-706 https://bugs.opendaylight.org/show_bug.cgi?id=706
 137                     if (schemaChild instanceof AnyXmlSchemaNode) {
 138                         LOG.warn("Node {} will be ignored. AnyXml is not yet supported from binding aware code."
 139                                 + "Binding Independent code can be used to serialize anyXml nodes.",
 140                                 schemaChild.getPath());
 141                         continue;
 142                     }
 143
 144                     throw new IllegalStateException(
 145                         String.format("Unable to find type for child node %s. Expected child nodes: %s",
 146                             schemaChild.getPath(), getterToType));
 147                 }
 148                 emitChild(sb, getter, childType, schemaChild);
 149             }
 150         }
 151     }
 152
 153     private void emitChild(final StringBuilder sb, final String getterName, final Type childType,
 154             final DataSchemaNode schemaChild) {
 155         sb.append(statement(assign(childType, getterName, cast(childType, invoke(INPUT, getterName)))));
 156
 157         sb.append("if (").append(getterName).append(" != null) {\n");
 158         emitChildInner(sb, getterName, childType, schemaChild);
 159         sb.append("}\n");
 160     }
 161
 162     private void emitChildInner(final StringBuilder sb, final String getterName, final Type childType,
 163             final DataSchemaNode child) {
 164         if (child instanceof LeafSchemaNode) {
 165             sb.append(statement(leafNode(child.getQName().getLocalName(), getterName)));
 166         } else if (child instanceof AnyXmlSchemaNode) {
 167             sb.append(statement(anyxmlNode(child.getQName().getLocalName(), getterName)));
 168         } else if (child instanceof LeafListSchemaNode) {
 169             final CharSequence startEvent;
 170             if (((LeafListSchemaNode) child).isUserOrdered()) {
 171                 startEvent = startOrderedLeafSet(child.getQName().getLocalName(),invoke(getterName, "size"));
 172             } else {
 173                 startEvent = startLeafSet(child.getQName().getLocalName(),invoke(getterName, "size"));
 174             }
 175             sb.append(statement(startEvent));
 176             final Type valueType = ((ParameterizedType) childType).getActualTypeArguments()[0];
 177             sb.append(forEach(getterName, valueType, statement(leafSetEntryNode(CURRENT))));
 178             sb.append(statement(endNode()));
 179         } else if (child instanceof ListSchemaNode) {
 180             final Type valueType = ((ParameterizedType) childType).getActualTypeArguments()[0];
 181             final ListSchemaNode casted = (ListSchemaNode) child;
 182             emitList(sb, getterName, valueType, casted);
 183         } else if (child instanceof ContainerSchemaNode) {
 184             sb.append(tryToUseCacheElse(getterName,statement(staticInvokeEmitter(childType, getterName))));
 185         } else if (child instanceof ChoiceSchemaNode) {
 186             final String propertyName = CHOICE_PREFIX + childType.getName();
 187             staticConstant(propertyName, DataObjectSerializerImplementation.class,
 188                 ChoiceDispatchSerializer.from(loadClass(childType)));
 189             sb.append(tryToUseCacheElse(getterName,statement(invoke(propertyName,
 190                 StreamWriterGenerator.SERIALIZE_METHOD_NAME, REGISTRY, cast(DataObject.class.getName(), getterName),
 191                 STREAM))));
 192         }
 193     }
 194
 195     private static StringBuilder tryToUseCacheElse(final String getterName, final CharSequence statement) {
 196         final StringBuilder b = new StringBuilder();
 197         b.append("if ( ");
 198         b.append(SERIALIZER).append("== null || ");
 199         b.append(invoke(SERIALIZER, "serialize", getterName)).append("== null");
 200         b.append(") {");
 201         b.append(statement);
 202         b.append('}');
 203         return b;
 204     }
 205
 206     private void emitList(final StringBuilder sb, final String getterName, final Type valueType,
 207             final ListSchemaNode child) {
 208         final CharSequence startEvent;
 209
 210         sb.append(statement(assign("int", "_count", invoke(getterName, "size"))));
 211         if (child.getKeyDefinition().isEmpty()) {
 212             startEvent = startUnkeyedList(classReference(valueType), "_count");
 213         } else if (child.isUserOrdered()) {
 214             startEvent = startOrderedMapNode(classReference(valueType), "_count");
 215         } else {
 216             startEvent = startMapNode(classReference(valueType), "_count");
 217         }
 218         sb.append(statement(startEvent));
 219         sb.append(forEach(getterName, valueType, tryToUseCacheElse(CURRENT, statement(staticInvokeEmitter(valueType,
 220             CURRENT)))));
 221         sb.append(statement(endNode()));
 222     }
 223 }