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 createGetter(Segment segment) {
assert segment != null;
String methodName = Naming.getShuffleValueGetter(segment.getPortId());
List<Statement> statements = new ArrayList<Statement>();
statements.add(
factory.newIfStatement(
new ExpressionBuilder(factory, factory.newThis())
.field(SEGMENT_ID_FIELD_NAME)
.apply(InfixOperator.NOT_EQUALS, v(segment.getPortId()))
.toExpression(),
new TypeBuilder(factory, t(AssertionError.class)).newObject().toThrowStatement(),
null));
statements.add(
new ExpressionBuilder(factory, factory.newThis())
.field(createPropertyName(segment))
.toReturnStatement());
return factory.newMethodDeclaration(
new JavadocBuilder(factory)
.text(
"{0}#{1}のモデルオブジェクトを返す。",
segment.getPort().getOwner().getDescription().getName(),
segment.getPort().getDescription().getName())
.toJavadoc(),
new AttributeBuilder(factory).Public().toAttributes(),
t(segment.getTarget().getType()),
factory.newSimpleName(methodName),
Collections.<FormalParameterDeclaration>emptyList(),
statements);
}
private List<FieldDeclaration> prepareFields() {
List<FieldDeclaration> fields = new ArrayList<FieldDeclaration>();
// shufles
for (ShuffleModel.Segment segment : shuffle.getSegments()) {
SimpleName shuffleName = names.create("shuffle");
shuffleNames.put(segment, shuffleName);
Name shuffleTypeName = segment.getCompiled().getCombineOutputType().getQualifiedName();
fields.add(
factory.newFieldDeclaration(
null,
new AttributeBuilder(factory).Private().toAttributes(),
importer.toType(shuffleTypeName),
shuffleName,
null));
}
// rendezvous
for (ReduceUnit unit : reduceUnits) {
if (unit.canCombine() == false) {
continue;
}
Fragment first = unit.getFragments().get(0);
SimpleName rendezvousName = names.create("combine");
rendezvousNames.put(first, rendezvousName);
fields.add(
factory.newFieldDeclaration(
null,
new AttributeBuilder(factory).Private().toAttributes(),
importer.toType(first.getCompiled().getQualifiedName()),
rendezvousName,
null));
}
return fields;
}
private FieldDeclaration createSegmentIdField() {
return factory.newFieldDeclaration(
new JavadocBuilder(factory).text("セグメント番号。").toJavadoc(),
new AttributeBuilder(factory).Public().toAttributes(),
t(int.class),
factory.newSimpleName(SEGMENT_ID_FIELD_NAME),
v(-1));
}
@Override
public List<Annotation> getTypeAnnotations(EmitContext context, ModelDeclaration model)
throws IOException {
Type type = generate(context, model);
ModelFactory f = context.getModelFactory();
return new AttributeBuilder(f)
.annotation(
context.resolve(ModelInputLocation.class), f.newClassLiteral(context.resolve(type)))
.toAnnotations();
}
private TypeBodyDeclaration createSegmentIdGetter() {
Statement body =
new ExpressionBuilder(factory, factory.newThis())
.field(SEGMENT_ID_FIELD_NAME)
.toReturnStatement();
return factory.newMethodDeclaration(
null,
new AttributeBuilder(factory).annotation(t(Override.class)).Public().toAttributes(),
t(int.class),
factory.newSimpleName(SegmentedWritable.ID_GETTER),
Collections.<FormalParameterDeclaration>emptyList(),
Collections.singletonList(body));
}
public Engine(FlowCompilingEnvironment environment, ShuffleModel model, Name keyTypeName) {
assert environment != null;
assert model != null;
assert keyTypeName != null;
this.model = model;
this.factory = environment.getModelFactory();
Name packageName = environment.getStagePackageName(model.getStageBlock().getStageNumber());
this.importer =
new ImportBuilder(
factory,
factory.newPackageDeclaration(packageName),
ImportBuilder.Strategy.TOP_LEVEL);
this.keyType = importer.resolve(factory.newNamedType(keyTypeName));
}
private MethodDeclaration createSetup() {
Map<FlowElementInput, Segment> segments = new HashMap<FlowElementInput, Segment>();
List<Statement> statements = new ArrayList<Statement>();
// shuffle outputs
for (Map.Entry<ShuffleModel.Segment, SimpleName> entry : shuffleNames.entrySet()) {
ShuffleModel.Segment segment = entry.getKey();
SimpleName name = entry.getValue();
Name shuffleTypeName = segment.getCompiled().getCombineOutputType().getQualifiedName();
statements.add(
new ExpressionBuilder(factory, factory.newThis())
.field(name)
.assignFrom(
new TypeBuilder(factory, importer.toType(shuffleTypeName))
.newObject(context)
.toExpression())
.toStatement());
segments.put(segment.getPort(), segment);
}
// rendezvous
for (Map.Entry<Fragment, SimpleName> entry : rendezvousNames.entrySet()) {
Fragment fragment = entry.getKey();
Type rendezvousType = importer.toType(fragment.getCompiled().getQualifiedName());
List<Expression> arguments = new ArrayList<Expression>();
for (FlowElementInput input : fragment.getInputPorts()) {
Segment segment = segments.get(input);
assert segment != null;
SimpleName shuffleName = shuffleNames.get(segment);
assert shuffleName != null;
arguments.add(
new ExpressionBuilder(factory, factory.newThis()).field(shuffleName).toExpression());
}
SimpleName name = entry.getValue();
statements.add(
new ExpressionBuilder(factory, factory.newThis())
.field(name)
.assignFrom(
new TypeBuilder(factory, rendezvousType).newObject(arguments).toExpression())
.toStatement());
}
return factory.newMethodDeclaration(
null,
new AttributeBuilder(factory).annotation(t(Override.class)).Public().toAttributes(),
Collections.<TypeParameterDeclaration>emptyList(),
t(void.class),
factory.newSimpleName("setup"),
Collections.singletonList(
factory.newFormalParameterDeclaration(
factory.newNamedType(factory.newSimpleName("Context")), context)),
0,
Arrays.asList(t(IOException.class), t(InterruptedException.class)),
factory.newBlock(statements));
}
private MethodDeclaration createCleanup() {
List<Statement> statements = new ArrayList<Statement>();
for (SimpleName name : shuffleNames.values()) {
statements.add(
new ExpressionBuilder(factory, factory.newThis())
.field(name)
.assignFrom(Models.toNullLiteral(factory))
.toStatement());
}
for (SimpleName name : rendezvousNames.values()) {
statements.add(
new ExpressionBuilder(factory, factory.newThis())
.field(name)
.assignFrom(Models.toNullLiteral(factory))
.toStatement());
}
return factory.newMethodDeclaration(
null,
new AttributeBuilder(factory).annotation(t(Override.class)).Public().toAttributes(),
Collections.<TypeParameterDeclaration>emptyList(),
t(void.class),
factory.newSimpleName("cleanup"),
Collections.singletonList(
factory.newFormalParameterDeclaration(
factory.newNamedType(factory.newSimpleName("Context")), context)),
0,
Arrays.asList(t(IOException.class), t(InterruptedException.class)),
factory.newBlock(statements));
}
private TypeBodyDeclaration createCloser() {
return f.newMethodDeclaration(
null,
new AttributeBuilder(f)
.annotation(context.resolve(Override.class))
.Public()
.toAttributes(),
Collections.<TypeParameterDeclaration>emptyList(),
context.resolve(void.class),
f.newSimpleName("close"),
Collections.<FormalParameterDeclaration>emptyList(),
0,
Collections.singletonList(context.resolve(IOException.class)),
f.newBlock(createCloserBody()));
}
private TypeBodyDeclaration createConstructor() {
return f.newConstructorDeclaration(
new JavadocBuilder(f)
.text("インスタンスを生成する。")
.param(createParserFieldName())
.text("利用するパーサー")
.exception(context.resolve(IllegalArgumentException.class))
.text("引数に<code>null</code>が指定された場合")
.toJavadoc(),
new AttributeBuilder(f).Public().toAttributes(),
context.getTypeName(),
Collections.singletonList(
f.newFormalParameterDeclaration(
context.resolve(RecordParser.class), createParserFieldName())),
createConstructorBody());
}
private void emit() throws IOException {
ClassDeclaration decl =
f.newClassDeclaration(
new JavadocBuilder(f)
.text("TSVファイルなどのレコードを表すファイルを入力として<code>{0}</code>を読み出す", model.getName())
.toJavadoc(),
new AttributeBuilder(f).Public().Final().toAttributes(),
context.getTypeName(),
Collections.<TypeParameterDeclaration>emptyList(),
null,
Collections.singletonList(
f.newParameterizedType(
context.resolve(ModelInput.class), context.resolve(model.getSymbol()))),
createMembers());
context.emit(decl);
}
private MethodDeclaration createReader() {
return f.newMethodDeclaration(
null,
new AttributeBuilder(f)
.annotation(context.resolve(Override.class))
.Public()
.toAttributes(),
Collections.<TypeParameterDeclaration>emptyList(),
context.resolve(boolean.class),
f.newSimpleName("readTo"),
Collections.singletonList(
f.newFormalParameterDeclaration(
context.resolve(model.getSymbol()), createModelParameterName())),
0,
Collections.singletonList(context.resolve(IOException.class)),
f.newBlock(createReaderBody()));
}
private TypeBodyDeclaration createParserField() {
return f.newFieldDeclaration(
null,
new AttributeBuilder(f).Private().Final().toAttributes(),
context.resolve(RecordParser.class),
createParserFieldName(),
null);
}
public CompilationUnit generate() {
TypeDeclaration type = createType();
return factory.newCompilationUnit(
importer.getPackageDeclaration(),
importer.toImportDeclarations(),
Collections.singletonList(type),
Collections.<Comment>emptyList());
}
private FieldDeclaration createProperty(Segment segment) {
assert segment != null;
String name = createPropertyName(segment);
DataClass target = segment.getTarget();
return factory.newFieldDeclaration(
new JavadocBuilder(factory)
.text(
"{0}#{1}が利用するモデル ({2})。",
segment.getPort().getOwner().getDescription().getName(),
segment.getPort().getDescription().getName(),
segment.getPortId())
.toJavadoc(),
new AttributeBuilder(factory).Public().toAttributes(),
t(target.getType()),
factory.newSimpleName(name),
target.createNewInstance(t(target.getType())));
}
private List<Statement> createConstructorBody() {
List<Statement> results = new ArrayList<Statement>();
results.add(
f.newIfStatement(
new ExpressionBuilder(f, createParserFieldName())
.apply(InfixOperator.EQUALS, Models.toNullLiteral(f))
.toExpression(),
f.newBlock(
new TypeBuilder(f, context.resolve(IllegalArgumentException.class))
.newObject(Models.toLiteral(f, createParserFieldName().getToken()))
.toThrowStatement())));
results.add(
new ExpressionBuilder(f, f.newThis(null))
.field(createParserFieldName())
.assignFrom(createParserFieldName())
.toStatement());
return results;
}
private List<Statement> createReaderBody() {
List<Statement> results = new ArrayList<Statement>();
results.add(
f.newIfStatement(
new ExpressionBuilder(f, createParserFieldName())
.method("next")
.apply(InfixOperator.EQUALS, Models.toLiteral(f, false))
.toExpression(),
f.newBlock(
new ExpressionBuilder(f, Models.toLiteral(f, false)).toReturnStatement())));
for (PropertyDeclaration property : model.getDeclaredProperties()) {
results.add(createReaderStatement(property));
}
results.add(createEndRecordStatement());
results.add(f.newReturnStatement(Models.toLiteral(f, true)));
return results;
}
private TypeDeclaration createType() {
SimpleName name = factory.newSimpleName(Naming.getShuffleValueClass());
importer.resolvePackageMember(name);
List<TypeBodyDeclaration> members = new ArrayList<TypeBodyDeclaration>();
members.addAll(createSegmentDistinction());
members.addAll(createProperties());
members.addAll(createAccessors());
members.addAll(createWritables());
return factory.newClassDeclaration(
createJavadoc(),
new AttributeBuilder(factory)
.annotation(t(SuppressWarnings.class), v("deprecation"))
.Public()
.Final()
.toAttributes(),
name,
Collections.<TypeParameterDeclaration>emptyList(),
null,
Collections.singletonList(t(SegmentedWritable.class)),
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 TypeDeclaration createType() {
SimpleName name = factory.newSimpleName(Naming.getShuffleGroupingComparatorClass());
importer.resolvePackageMember(name);
List<TypeBodyDeclaration> members = new ArrayList<TypeBodyDeclaration>();
members.add(createCompareBytes());
members.add(createCompareObjects());
members.add(ShuffleEmiterUtil.createCompareInts(factory));
members.add(ShuffleEmiterUtil.createPortToElement(factory, model));
return factory.newClassDeclaration(
createJavadoc(),
new AttributeBuilder(factory)
.annotation(t(SuppressWarnings.class), v("rawtypes"))
.Public()
.toAttributes(),
name,
Collections.<TypeParameterDeclaration>emptyList(),
null,
Collections.singletonList(
importer.resolve(
factory.newParameterizedType(
t(RawComparator.class), Collections.singletonList(keyType)))),
members);
}
Engine(FlowCompilingEnvironment environment, StageModel model) {
assert environment != null;
assert model != null;
this.reduceUnits = model.getReduceUnits();
this.shuffle = model.getShuffleModel();
this.factory = environment.getModelFactory();
Name packageName = environment.getStagePackageName(model.getStageBlock().getStageNumber());
this.importer =
new ImportBuilder(
factory,
factory.newPackageDeclaration(packageName),
ImportBuilder.Strategy.TOP_LEVEL);
this.names = new NameGenerator(factory);
this.context = names.create("context");
this.shuffleNames = new HashMap<ShuffleModel.Segment, SimpleName>();
this.rendezvousNames = new HashMap<Fragment, SimpleName>();
}
private MethodDeclaration createSetter(Segment segment) {
assert segment != null;
String methodName = Naming.getShuffleValueSetter(segment.getPortId());
DataClass type = segment.getTarget();
SimpleName argument = factory.newSimpleName("model");
List<Statement> statements = new ArrayList<Statement>();
statements.add(
new ExpressionBuilder(factory, factory.newThis())
.field(factory.newSimpleName(SEGMENT_ID_FIELD_NAME))
.assignFrom(v(segment.getPortId()))
.toStatement());
statements.add(
type.assign(
new ExpressionBuilder(factory, factory.newThis())
.field(createPropertyName(segment))
.toExpression(),
argument));
return factory.newMethodDeclaration(
new JavadocBuilder(factory)
.text(
"{0}#{1}で使用するモデルオブジェクトを設定する。",
segment.getPort().getOwner().getDescription().getName(),
segment.getPort().getDescription().getName())
.param(argument)
.text("設定するモデルオブジェクト")
.toJavadoc(),
new AttributeBuilder(factory).Public().toAttributes(),
t(void.class),
factory.newSimpleName(methodName),
Collections.singletonList(
factory.newFormalParameterDeclaration(t(type.getType()), argument)),
statements);
}
private MethodDeclaration createReadFieldsMethod() {
SimpleName in = factory.newSimpleName("in");
Expression segmentId =
new ExpressionBuilder(factory, factory.newThis())
.field(SEGMENT_ID_FIELD_NAME)
.toExpression();
List<Statement> statements = new ArrayList<Statement>();
statements.add(
new ExpressionBuilder(factory, segmentId)
.assignFrom(new ExpressionBuilder(factory, in).method("readInt").toExpression())
.toStatement());
List<Statement> cases = new ArrayList<Statement>();
for (Segment segment : model.getSegments()) {
cases.add(factory.newSwitchCaseLabel(v(segment.getPortId())));
String fieldName = createPropertyName(segment);
cases.add(
segment
.getTarget()
.createReader(
new ExpressionBuilder(factory, factory.newThis())
.field(fieldName)
.toExpression(),
in));
cases.add(factory.newBreakStatement());
}
cases.add(factory.newSwitchDefaultLabel());
cases.add(
new TypeBuilder(factory, t(AssertionError.class))
.newObject(segmentId)
.toThrowStatement());
statements.add(factory.newSwitchStatement(segmentId, cases));
return factory.newMethodDeclaration(
null,
new AttributeBuilder(factory).annotation(t(Override.class)).Public().toAttributes(),
Collections.<TypeParameterDeclaration>emptyList(),
t(void.class),
factory.newSimpleName("readFields"),
Collections.singletonList(factory.newFormalParameterDeclaration(t(DataInput.class), in)),
0,
Collections.singletonList(t(IOException.class)),
factory.newBlock(statements));
}
private MethodDeclaration createCompareBytes() {
SimpleName b1 = factory.newSimpleName("b1");
SimpleName s1 = factory.newSimpleName("s1");
SimpleName l1 = factory.newSimpleName("l1");
SimpleName b2 = factory.newSimpleName("b2");
SimpleName s2 = factory.newSimpleName("s2");
SimpleName l2 = factory.newSimpleName("l2");
List<Statement> statements = new ArrayList<Statement>();
SimpleName segmentId1 = factory.newSimpleName("segmentId1");
SimpleName segmentId2 = factory.newSimpleName("segmentId2");
statements.add(
new TypeBuilder(factory, t(WritableComparator.class))
.method("readInt", b1, s1)
.toLocalVariableDeclaration(t(int.class), segmentId1));
statements.add(
new TypeBuilder(factory, t(WritableComparator.class))
.method("readInt", b2, s2)
.toLocalVariableDeclaration(t(int.class), segmentId2));
SimpleName diff = factory.newSimpleName("diff");
statements.add(
new ExpressionBuilder(factory, factory.newThis())
.method(
ShuffleEmiterUtil.COMPARE_INT,
new ExpressionBuilder(factory, factory.newThis())
.method(ShuffleEmiterUtil.PORT_TO_ELEMENT, segmentId1)
.toExpression(),
new ExpressionBuilder(factory, factory.newThis())
.method(ShuffleEmiterUtil.PORT_TO_ELEMENT, segmentId2)
.toExpression())
.toLocalVariableDeclaration(t(int.class), diff));
statements.add(createDiffBranch(diff));
SimpleName o1 = factory.newSimpleName("o1");
SimpleName o2 = factory.newSimpleName("o2");
SimpleName size1 = factory.newSimpleName("size1");
SimpleName size2 = factory.newSimpleName("size2");
statements.add(
new ExpressionBuilder(factory, v(4)).toLocalVariableDeclaration(t(int.class), o1));
statements.add(
new ExpressionBuilder(factory, v(4)).toLocalVariableDeclaration(t(int.class), o2));
statements.add(
new ExpressionBuilder(factory, v(-1)).toLocalVariableDeclaration(t(int.class), size1));
statements.add(
new ExpressionBuilder(factory, v(-1)).toLocalVariableDeclaration(t(int.class), size2));
List<Statement> cases = new ArrayList<Statement>();
for (List<Segment> segments : ShuffleEmiterUtil.groupByElement(model)) {
for (Segment segment : segments) {
cases.add(factory.newSwitchCaseLabel(v(segment.getPortId())));
}
for (Term term : segments.get(0).getTerms()) {
if (term.getArrangement() != Arrangement.GROUPING) {
continue;
}
cases.add(
new ExpressionBuilder(factory, size1)
.assignFrom(
term.getSource()
.createBytesSize(
b1,
factory.newInfixExpression(s1, InfixOperator.PLUS, o1),
factory.newInfixExpression(l1, InfixOperator.MINUS, o1)))
.toStatement());
cases.add(
new ExpressionBuilder(factory, size2)
.assignFrom(
term.getSource()
.createBytesSize(
b2,
factory.newInfixExpression(s2, InfixOperator.PLUS, o2),
factory.newInfixExpression(l2, InfixOperator.MINUS, o2)))
.toStatement());
cases.add(
new ExpressionBuilder(factory, diff)
.assignFrom(
term.getSource()
.createBytesDiff(
b1,
factory.newInfixExpression(s1, InfixOperator.PLUS, o1),
size1,
b2,
factory.newInfixExpression(s2, InfixOperator.PLUS, o2),
size2))
.toStatement());
cases.add(createDiffBranch(diff));
cases.add(
new ExpressionBuilder(factory, o1)
.assignFrom(InfixOperator.PLUS, size1)
.toStatement());
cases.add(
new ExpressionBuilder(factory, o2)
.assignFrom(InfixOperator.PLUS, size2)
.toStatement());
}
cases.add(factory.newBreakStatement());
}
cases.add(factory.newSwitchDefaultLabel());
cases.add(new TypeBuilder(factory, t(AssertionError.class)).newObject().toThrowStatement());
statements.add(factory.newSwitchStatement(segmentId1, cases));
statements.add(new ExpressionBuilder(factory, v(0)).toReturnStatement());
return factory.newMethodDeclaration(
null,
new AttributeBuilder(factory).annotation(t(Override.class)).Public().toAttributes(),
t(int.class),
factory.newSimpleName("compare"),
Arrays.asList(
new FormalParameterDeclaration[] {
factory.newFormalParameterDeclaration(t(byte[].class), b1),
factory.newFormalParameterDeclaration(t(int.class), s1),
factory.newFormalParameterDeclaration(t(int.class), l1),
factory.newFormalParameterDeclaration(t(byte[].class), b2),
factory.newFormalParameterDeclaration(t(int.class), s2),
factory.newFormalParameterDeclaration(t(int.class), l2),
}),
statements);
}
private IfStatement createDiffBranch(SimpleName diff) {
return factory.newIfStatement(
new ExpressionBuilder(factory, diff).apply(InfixOperator.NOT_EQUALS, v(0)).toExpression(),
new ExpressionBuilder(factory, diff).toReturnStatement(),
null);
}
private TypeBodyDeclaration createCompareObjects() {
SimpleName o1 = factory.newSimpleName("o1");
SimpleName o2 = factory.newSimpleName("o2");
List<Statement> statements = new ArrayList<Statement>();
SimpleName segmentId1 = factory.newSimpleName("segmentId1");
SimpleName segmentId2 = factory.newSimpleName("segmentId2");
statements.add(
new ExpressionBuilder(factory, o1)
.method(SegmentedWritable.ID_GETTER)
.toLocalVariableDeclaration(t(int.class), segmentId1));
statements.add(
new ExpressionBuilder(factory, o2)
.method(SegmentedWritable.ID_GETTER)
.toLocalVariableDeclaration(t(int.class), segmentId2));
SimpleName diff = factory.newSimpleName("diff");
statements.add(
new ExpressionBuilder(factory, factory.newThis())
.method(
ShuffleEmiterUtil.COMPARE_INT,
new ExpressionBuilder(factory, factory.newThis())
.method(ShuffleEmiterUtil.PORT_TO_ELEMENT, segmentId1)
.toExpression(),
new ExpressionBuilder(factory, factory.newThis())
.method(ShuffleEmiterUtil.PORT_TO_ELEMENT, segmentId2)
.toExpression())
.toLocalVariableDeclaration(t(int.class), diff));
statements.add(createDiffBranch(diff));
List<Statement> cases = new ArrayList<Statement>();
for (List<Segment> segments : ShuffleEmiterUtil.groupByElement(model)) {
for (Segment segment : segments) {
cases.add(factory.newSwitchCaseLabel(v(segment.getPortId())));
}
Segment segment = segments.get(0);
for (Term term : segment.getTerms()) {
if (term.getArrangement() != Arrangement.GROUPING) {
continue;
}
String name = ShuffleEmiterUtil.getPropertyName(segment, term);
Expression rhs =
term.getSource()
.createValueDiff(
new ExpressionBuilder(factory, o1).field(name).toExpression(),
new ExpressionBuilder(factory, o2).field(name).toExpression());
cases.add(new ExpressionBuilder(factory, diff).assignFrom(rhs).toStatement());
cases.add(createDiffBranch(diff));
}
cases.add(factory.newBreakStatement());
}
cases.add(factory.newSwitchDefaultLabel());
cases.add(new TypeBuilder(factory, t(AssertionError.class)).newObject().toThrowStatement());
statements.add(factory.newSwitchStatement(segmentId1, cases));
statements.add(new ExpressionBuilder(factory, v(0)).toReturnStatement());
return factory.newMethodDeclaration(
null,
new AttributeBuilder(factory).annotation(t(Override.class)).Public().toAttributes(),
t(int.class),
factory.newSimpleName("compare"),
Arrays.asList(
new FormalParameterDeclaration[] {
factory.newFormalParameterDeclaration(keyType, o1),
factory.newFormalParameterDeclaration(keyType, o2),
}),
statements);
}
private SimpleName createParserFieldName() {
return f.newSimpleName("parser");
}
private SimpleName createModelParameterName() {
return f.newSimpleName("model");
}
