private TypeDeclaration createType() {
SimpleName name = factory.newSimpleName(Naming.getCombineClass());
importer.resolvePackageMember(name);
List<TypeBodyDeclaration> members = new ArrayList<TypeBodyDeclaration>();
members.addAll(prepareFields());
members.add(createSetup());
members.add(createCleanup());
members.add(createGetRendezvous());
return factory.newClassDeclaration(
new JavadocBuilder(factory)
.text("ステージ{0}の処理を担当するコンバイナープログラム。", shuffle.getStageBlock().getStageNumber())
.toJavadoc(),
new AttributeBuilder(factory)
.annotation(t(SuppressWarnings.class), v("deprecation"))
.Public()
.Final()
.toAttributes(),
name,
Collections.<TypeParameterDeclaration>emptyList(),
importer.resolve(
factory.newParameterizedType(
Models.toType(factory, SegmentedCombiner.class),
Arrays.asList(
importer.toType(shuffle.getCompiled().getKeyTypeName()),
importer.toType(shuffle.getCompiled().getValueTypeName())))),
Collections.<Type>emptyList(),
members);
}
private MethodDeclaration createGetRendezvous() {
Map<FlowElement, SimpleName> fragments = new HashMap<FlowElement, SimpleName>();
for (Map.Entry<Fragment, SimpleName> entry : rendezvousNames.entrySet()) {
fragments.put(entry.getKey().getFactors().get(0).getElement(), entry.getValue());
}
List<Statement> cases = new ArrayList<Statement>();
for (List<ShuffleModel.Segment> group : ShuffleEmiterUtil.groupByElement(shuffle)) {
for (ShuffleModel.Segment segment : group) {
cases.add(factory.newSwitchCaseLabel(v(segment.getPortId())));
}
FlowElement element = group.get(0).getPort().getOwner();
SimpleName rendezvousName = fragments.get(element);
if (rendezvousName == null) {
cases.add(
new ExpressionBuilder(factory, Models.toNullLiteral(factory)).toReturnStatement());
} else {
cases.add(
new ExpressionBuilder(factory, factory.newThis())
.field(rendezvousName)
.toReturnStatement());
}
}
cases.add(factory.newSwitchDefaultLabel());
cases.add(new TypeBuilder(factory, t(AssertionError.class)).newObject().toThrowStatement());
SimpleName argument = names.create("nextKey");
List<Statement> statements = new ArrayList<Statement>();
statements.add(
factory.newSwitchStatement(
new ExpressionBuilder(factory, argument)
.method(SegmentedWritable.ID_GETTER)
.toExpression(),
cases));
return factory.newMethodDeclaration(
null,
new AttributeBuilder(factory).annotation(t(Override.class)).Protected().toAttributes(),
importer.resolve(
factory.newParameterizedType(
Models.toType(factory, Rendezvous.class),
importer.toType(shuffle.getCompiled().getValueTypeName()))),
factory.newSimpleName(SegmentedReducer.GET_RENDEZVOUS),
Collections.singletonList(
factory.newFormalParameterDeclaration(
importer.toType(shuffle.getCompiled().getKeyTypeName()), argument)),
statements);
}
private Type t(java.lang.reflect.Type type) {
return importer.resolve(Models.toType(factory, type));
}