binding2/mdsal-binding2-dom-codec/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/codec/generator/spi/source/AbstractDataNodeContainerSerializerSource.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. 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.mdsal.binding.javav2.dom.codec.generator.spi.source;
   9
  10 import com.google.common.annotations.Beta;
  11 import com.google.common.base.Preconditions;
  12 import java.util.Collection;
  13 import java.util.HashMap;
  14 import java.util.Map;
  15 import org.opendaylight.mdsal.binding.javav2.dom.codec.generator.impl.StreamWriterGenerator;
  16 import org.opendaylight.mdsal.binding.javav2.dom.codec.generator.spi.generator.AbstractGenerator;
  17 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.serializer.ChoiceDispatchSerializer;
  18 import org.opendaylight.mdsal.binding.javav2.generator.util.JavaIdentifier;
  19 import org.opendaylight.mdsal.binding.javav2.generator.util.JavaIdentifierNormalizer;
  20 import org.opendaylight.mdsal.binding.javav2.model.api.GeneratedType;
  21 import org.opendaylight.mdsal.binding.javav2.model.api.MethodSignature;
  22 import org.opendaylight.mdsal.binding.javav2.model.api.ParameterizedType;
  23 import org.opendaylight.mdsal.binding.javav2.model.api.Type;
  24 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeNode;
  25 import org.opendaylight.mdsal.binding.javav2.spec.runtime.BindingSerializer;
  26 import org.opendaylight.mdsal.binding.javav2.spec.runtime.BindingStreamEventWriter;
  27 import org.opendaylight.mdsal.binding.javav2.spec.runtime.TreeNodeSerializerImplementation;
  28 import org.opendaylight.mdsal.binding.javav2.spec.runtime.TreeNodeSerializerRegistry;
  29 import org.opendaylight.yangtools.yang.common.QName;
  30 import org.opendaylight.yangtools.yang.model.api.AnyXmlSchemaNode;
  31 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
  32 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  33 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
  34 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  35 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
  36 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
  37 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  38 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
  39 import org.opendaylight.yangtools.yang.model.api.TypedDataSchemaNode;
  40 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
  41 import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
  42 import org.slf4j.Logger;
  43 import org.slf4j.LoggerFactory;
  44
  45 @Beta
  46 public abstract class AbstractDataNodeContainerSerializerSource extends AbstractTreeNodeSerializerSource {
  47
  48     private static final Logger LOG = LoggerFactory.getLogger(AbstractDataNodeContainerSerializerSource.class);
  49
  50     protected static final String INPUT = "_input";
  51     private static final String CHOICE_PREFIX = "CHOICE_";
  52
  53     //Note: the field takes no effects by augmentation.
  54     private final DataNodeContainer schemaNode;
  55     private final GeneratedType dtoType;
  56
  57     public AbstractDataNodeContainerSerializerSource(final AbstractGenerator generator, final GeneratedType type,
  58             final DataNodeContainer node) {
  59         super(generator);
  60         this.dtoType = Preconditions.checkNotNull(type);
  61         this.schemaNode = Preconditions.checkNotNull(node);
  62     }
  63
  64     /**
  65      * Return the character sequence which should be used for start event.
  66      *
  67      * @return Start event character sequence
  68      */
  69     protected abstract CharSequence emitStartEvent();
  70
  71     @Override
  72     public CharSequence getSerializerBody() {
  73         final StringBuilder builder = new StringBuilder();
  74         builder.append("{\n");
  75         builder.append(statement(assign(TreeNodeSerializerRegistry.class.getName(), REGISTRY, "$1")));
  76         builder.append(statement(assign(dtoType.getFullyQualifiedName(), INPUT,
  77                 cast(dtoType.getFullyQualifiedName(), "$2"))));
  78         builder.append(statement(assign(BindingStreamEventWriter.class.getName(), STREAM,
  79             cast(BindingStreamEventWriter.class.getName(), "$3"))));
  80         builder.append(statement(assign(BindingSerializer.class.getName(), SERIALIZER, null)));
  81         builder.append("if (");
  82         builder.append(STREAM);
  83         builder.append(" instanceof ");
  84         builder.append(BindingSerializer.class.getName());
  85         builder.append(") {");
  86         builder.append(statement(assign(SERIALIZER, cast(BindingSerializer.class.getName(), STREAM))));
  87         builder.append('}');
  88         builder.append(statement(emitStartEvent()));
  89
  90         emitBody(builder);
  91         emitAfterBody(builder);
  92         builder.append(statement(endNode()));
  93         builder.append(statement("return null"));
  94         builder.append('}');
  95         return builder;
  96     }
  97
  98     /**
  99      * Allows for customization of emitting code, which is processed after
 100      * normal DataNodeContainer body. Ideal for augmentations or others.
 101      */
 102     protected void emitAfterBody(final StringBuilder builder) {
 103     }
 104
 105     private static Map<String, Type> collectAllProperties(final GeneratedType type, final Map<String, Type> hashMap) {
 106         for (final MethodSignature definition : type.getMethodDefinitions()) {
 107             hashMap.put(definition.getName(), definition.getReturnType());
 108         }
 109
 110        /**
 111         * According to binding v2 spec., uses nodes are processed as-if they are direct children
 112         * of parent node, so we can't get properties from implements any more. Uses nodes are processed by invoking
 113         * {@link org.opendaylight.mdsal.binding.javav2.generator.impl.GenHelperUtil#resolveDataSchemaNodes()} in which
 114         * {@link org.opendaylight.mdsal.binding.javav2.generator.impl.GenHelperUtil#resolveDataSchemaNodesCheck()}
 115         * allows them to be resolved.
 116         */
 117
 118         return hashMap;
 119     }
 120
 121     private static String getGetterName(final DataSchemaNode node) {
 122         final TypeDefinition<?> type;
 123         if (node instanceof TypedDataSchemaNode) {
 124             type = ((TypedDataSchemaNode) node).getType();
 125         } else {
 126             type = null;
 127         }
 128
 129         final String prefix;
 130         if (type instanceof BooleanTypeDefinition || type instanceof EmptyTypeDefinition) {
 131             prefix = "is";
 132         } else {
 133             prefix = "get";
 134         }
 135         return prefix + JavaIdentifierNormalizer.normalizeSpecificIdentifier(node.getQName().getLocalName(),
 136             JavaIdentifier.CLASS);
 137     }
 138
 139     private boolean emitCheck(final DataSchemaNode schemaChild) {
 140         if (schemaChild.isAugmenting()) {
 141             QName root = schemaChild.getPath().getPathFromRoot().iterator().next();
 142             return root.getModule().equals(schemaChild.getQName().getModule());
 143         }
 144
 145         return true;
 146     }
 147
 148     /**
 149      * Note: the method would be overrided by {@link AbstractAugmentSerializerSource#getChildNodes()},
 150      * since all augmentation schema nodes of same target would be grouped into sort of one node,
 151      * so call {@link AbstractAugmentSerializerSource#getChildNodes()} to get all these children
 152      * nodes of same target augmentation schemas.
 153      */
 154     protected Collection<DataSchemaNode> getChildNodes() {
 155         return schemaNode.getChildNodes();
 156     }
 157
 158     private void emitBody(final StringBuilder builder) {
 159         final Map<String, Type> getterToType = collectAllProperties(dtoType, new HashMap<String, Type>());
 160         for (final DataSchemaNode schemaChild : getChildNodes()) {
 161             /**
 162              * As before, it only emitted data nodes which were not added by uses or augment, now
 163              * according to binding v2 specification, augment of the same module is same as inlining,
 164              * all data node children should be processed as-if they were directly defined inside
 165              * target node.
 166              */
 167             if (emitCheck(schemaChild)) {
 168                 final String getter = getGetterName(schemaChild);
 169                 final Type childType = getterToType.get(getter);
 170                 if (childType == null) {
 171                     // FIXME AnyXml nodes are ignored, since their type cannot be found in generated bindnig
 172                     // Bug-706 https://bugs.opendaylight.org/show_bug.cgi?id=706
 173                     if (schemaChild instanceof AnyXmlSchemaNode) {
 174                         LOG.warn("Node {} will be ignored. AnyXml is not yet supported from binding aware code."
 175                             + "Binding Independent code can be used to serialize anyXml nodes.", schemaChild.getPath());
 176                         continue;
 177                     }
 178
 179                     throw new IllegalStateException(
 180                         String.format("Unable to find type for child node %s. Expected child nodes: %s",
 181                             schemaChild.getPath(), getterToType));
 182                 }
 183                 emitChild(builder, getter, childType, schemaChild);
 184             }
 185         }
 186     }
 187
 188     private void emitChild(final StringBuilder builder, final String getterName, final Type childType,
 189             final DataSchemaNode schemaChild) {
 190         builder.append(statement(assign(childType, getterName, cast(childType, invoke(INPUT, getterName)))));
 191
 192         builder.append("if (").append(getterName).append(" != null) {\n");
 193         emitChildInner(builder, getterName, childType, schemaChild);
 194         builder.append("}\n");
 195     }
 196
 197     private void emitChildInner(final StringBuilder builder, final String getterName, final Type childType,
 198             final DataSchemaNode child) {
 199         if (child instanceof LeafSchemaNode) {
 200             builder.append(statement(leafNode(child.getQName().getLocalName(), getterName)));
 201         } else if (child instanceof AnyXmlSchemaNode) {
 202             builder.append(statement(anyxmlNode(child.getQName().getLocalName(), getterName)));
 203         } else if (child instanceof LeafListSchemaNode) {
 204             final CharSequence startEvent;
 205             if (((LeafListSchemaNode) child).isUserOrdered()) {
 206                 startEvent = startOrderedLeafSet(child.getQName().getLocalName(),
 207                     invoke(getterName, "size"));
 208             } else {
 209                 startEvent = startLeafSet(child.getQName().getLocalName(),invoke(getterName, "size"));
 210             }
 211             builder.append(statement(startEvent));
 212             final Type valueType = ((ParameterizedType) childType).getActualTypeArguments()[0];
 213             builder.append(forEach(getterName, valueType, statement(leafSetEntryNode(CURRENT))));
 214             builder.append(statement(endNode()));
 215         } else if (child instanceof ListSchemaNode) {
 216             final Type valueType = ((ParameterizedType) childType).getActualTypeArguments()[0];
 217             final ListSchemaNode casted = (ListSchemaNode) child;
 218             emitList(builder, getterName, valueType, casted);
 219         } else if (child instanceof ContainerSchemaNode) {
 220             builder.append(tryToUseCacheElse(getterName,statement(staticInvokeEmitter(childType, getterName))));
 221         } else if (child instanceof ChoiceSchemaNode) {
 222             final String propertyName = CHOICE_PREFIX + childType.getName();
 223             staticConstant(propertyName, TreeNodeSerializerImplementation.class,
 224                 ChoiceDispatchSerializer.from(loadClass(childType)));
 225             builder.append(tryToUseCacheElse(getterName,statement(invoke(propertyName,
 226                 StreamWriterGenerator.SERIALIZE_METHOD_NAME, REGISTRY, cast(TreeNode.class.getName(),getterName),
 227                 STREAM))));
 228         }
 229     }
 230
 231     private static StringBuilder tryToUseCacheElse(final String getterName, final CharSequence statement) {
 232         final StringBuilder b = new StringBuilder();
 233
 234         b.append("if ( ");
 235         b.append(SERIALIZER).append("== null || ");
 236         b.append(invoke(SERIALIZER, "serialize", getterName)).append("== null");
 237         b.append(") {");
 238         b.append(statement);
 239         b.append('}');
 240         return b;
 241     }
 242
 243     private void emitList(final StringBuilder builer, final String getterName, final Type valueType,
 244             final ListSchemaNode child) {
 245         final CharSequence startEvent;
 246
 247         builer.append(statement(assign("int", "_count", invoke(getterName, "size"))));
 248         if (child.getKeyDefinition().isEmpty()) {
 249             startEvent = startUnkeyedList(classReference(valueType), "_count");
 250         } else if (child.isUserOrdered()) {
 251             startEvent = startOrderedMapNode(classReference(valueType), "_count");
 252         } else {
 253             startEvent = startMapNode(classReference(valueType), "_count");
 254         }
 255         builer.append(statement(startEvent));
 256         builer.append(forEach(getterName, valueType, tryToUseCacheElse(CURRENT,
 257             statement(staticInvokeEmitter(valueType, CURRENT)))));
 258         builer.append(statement(endNode()));
 259     }
 260 }