I had implement a interceptor of myabtis. but we found a problem, execute interceptor lead to throw so many IllegalAccessException, it affects cpu performence
Shown below is where the problem is, why did not check access permision of feild befor executed code "field.get(target)".
public class GetFieldInvoker implements Invoker {
private final Field field;
public GetFieldInvoker(Field field) {
this.field = field;
}
#Override
public Object invoke(Object target, Object[] args) throws IllegalAccessException {
try {
return field.get(target);
} catch (IllegalAccessException e) {
if (Reflector.canControlMemberAccessible()) {
field.setAccessible(true);
return field.get(target);
} else {
throw e;
}
}
}
#Override
public Class<?> getType() {
return field.getType();
}
}
the intercepor of mine:
#Intercepts({
#Signature(
type = StatementHandler.class,
method = "prepare",
args = {Connection.class, Integer.class})
})
public class SqlIdInterceptor implements Interceptor {
private static final int MAX_LEN = 256;
private final RoomboxLogger logger = RoomboxLogManager.getLogger();
#Override
public Object intercept(Invocation invocation) throws Throwable {
StatementHandler statementHandler = realTarget(invocation.getTarget());
MetaObject metaObject = SystemMetaObject.forObject(statementHandler);
BoundSql boundSql = (BoundSql) metaObject.getValue("delegate.boundSql");
String originalSql = boundSql.getSql();
MappedStatement mappedStatement =
(MappedStatement) metaObject.getValue("delegate.mappedStatement");
String id = mappedStatement.getId();
if (id != null) {
int len = id.length();
if (len > MAX_LEN) {
logger.warn("too long id", "id", id, "len", len);
}
}
String newSQL = "# " + id + "\n" + originalSql;
metaObject.setValue("delegate.boundSql.sql", newSQL);
return invocation.proceed();
}
#SuppressWarnings("unchecked")
public static <T> T realTarget(Object target) {
if (Proxy.isProxyClass(target.getClass())) {
MetaObject metaObject = SystemMetaObject.forObject(target);
return realTarget(metaObject.getValue("h.target"));
}
return (T) target;
}
}
Flame Graph
enter image description here
enter image description here
I need help, how to avoid throw exceptions, is any other way to reslove this problem?
thanks.
Project Reactor has this factory method for creating a push/pull Producer<T>.
http://projectreactor.io/docs/core/release/reference/#_hybrid_push_pull_model
Is there any such thing in RxJava-2?
If not, what would be the recommended way (without actually implemementing reactive specs interfaces from scratch) to create such beast that can handle the push/pull model?
EDIT: as requested I am giving an example of the API I am trying to use...
private static class API
{
CompletableFuture<Void> getT(Consumer<Object> consumer) {}
}
private static class Callback implements Consumer<Object>
{
private API api;
public Callback(API api) { this api = api; }
#Override
public void accept(Object o)
{
//do stuff with o
//...
//request for another o
api.getT(this);
}
}
public void example()
{
API api = new API();
api.getT(new Callback(api)).join();
}
So it's call back based, which will get one item and from within you can request for another one. the completable future flags no more items.
Here is an example of a custom Flowable that turns this particular API into an RxJava source. Note however that in general, the API peculiarities in general may not be possible to capture with a single reactive bridge design:
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.atomic.*;
import java.util.function.*;
import org.reactivestreams.*;
import io.reactivex.Flowable;
import io.reactivex.internal.subscriptions.EmptySubscription;
import io.reactivex.internal.util.BackpressureHelper;
public final class SomeAsyncApiBridge<T> extends Flowable<T> {
final Function<? super Consumer<? super T>,
? extends CompletableFuture<Void>> apiInvoker;
final AtomicBoolean once;
public SomeAsyncApiBridge(Function<? super Consumer<? super T>,
? extends CompletableFuture<Void>> apiInvoker) {
this.apiInvoker = apiInvoker;
this.once = new AtomicBoolean();
}
#Override
protected void subscribeActual(Subscriber<? super T> s) {
if (once.compareAndSet(false, true)) {
SomeAsyncApiBridgeSubscription<T> parent =
new SomeAsyncApiBridgeSubscription<>(s, apiInvoker);
s.onSubscribe(parent);
parent.moveNext();
} else {
EmptySubscription.error(new IllegalStateException(
"Only one Subscriber allowed"), s);
}
}
static final class SomeAsyncApiBridgeSubscription<T>
extends AtomicInteger
implements Subscription, Consumer<T>, BiConsumer<Void, Throwable> {
/** */
private static final long serialVersionUID = 1270592169808316333L;
final Subscriber<? super T> downstream;
final Function<? super Consumer<? super T>,
? extends CompletableFuture<Void>> apiInvoker;
final AtomicInteger wip;
final AtomicLong requested;
final AtomicReference<CompletableFuture<Void>> task;
static final CompletableFuture<Void> TASK_CANCELLED =
CompletableFuture.completedFuture(null);
volatile T item;
volatile boolean done;
Throwable error;
volatile boolean cancelled;
long emitted;
SomeAsyncApiBridgeSubscription(
Subscriber<? super T> downstream,
Function<? super Consumer<? super T>,
? extends CompletableFuture<Void>> apiInvoker) {
this.downstream = downstream;
this.apiInvoker = apiInvoker;
this.requested = new AtomicLong();
this.wip = new AtomicInteger();
this.task = new AtomicReference<>();
}
#Override
public void request(long n) {
BackpressureHelper.add(requested, n);
drain();
}
#Override
public void cancel() {
cancelled = true;
CompletableFuture<Void> curr = task.getAndSet(TASK_CANCELLED);
if (curr != null && curr != TASK_CANCELLED) {
curr.cancel(true);
}
if (getAndIncrement() == 0) {
item = null;
}
}
void moveNext() {
if (wip.getAndIncrement() == 0) {
do {
CompletableFuture<Void> curr = task.get();
if (curr == TASK_CANCELLED) {
return;
}
CompletableFuture<Void> f = apiInvoker.apply(this);
if (task.compareAndSet(curr, f)) {
f.whenComplete(this);
} else {
curr = task.get();
if (curr == TASK_CANCELLED) {
f.cancel(true);
return;
}
}
} while (wip.decrementAndGet() != 0);
}
}
#Override
public void accept(Void t, Throwable u) {
if (u != null) {
error = u;
task.lazySet(TASK_CANCELLED);
}
done = true;
drain();
}
#Override
public void accept(T t) {
item = t;
drain();
}
void drain() {
if (getAndIncrement() != 0) {
return;
}
int missed = 1;
long e = emitted;
for (;;) {
for (;;) {
if (cancelled) {
item = null;
return;
}
boolean d = done;
T v = item;
boolean empty = v == null;
if (d && empty) {
Throwable ex = error;
if (ex == null) {
downstream.onComplete();
} else {
downstream.onError(ex);
}
return;
}
if (empty || e == requested.get()) {
break;
}
item = null;
downstream.onNext(v);
e++;
moveNext();
}
emitted = e;
missed = addAndGet(-missed);
if (missed == 0) {
break;
}
}
}
}
}
Test and example source:
import java.util.concurrent.*;
import java.util.function.Consumer;
import org.junit.Test;
public class SomeAsyncApiBridgeTest {
static final class AsyncRange {
final int max;
int index;
public AsyncRange(int start, int count) {
this.index = start;
this.max = start + count;
}
public CompletableFuture<Void> next(Consumer<? super Integer> consumer) {
int i = index;
if (i == max) {
return CompletableFuture.completedFuture(null);
}
index = i + 1;
CompletableFuture<Void> cf = CompletableFuture
.runAsync(() -> consumer.accept(i));
CompletableFuture<Void> cancel = new CompletableFuture<Void>() {
#Override
public boolean cancel(boolean mayInterruptIfRunning) {
cf.cancel(mayInterruptIfRunning);
return super.cancel(mayInterruptIfRunning);
}
};
return cancel;
}
}
#Test
public void simple() {
AsyncRange r = new AsyncRange(1, 10);
new SomeAsyncApiBridge<Integer>(
consumer -> r.next(consumer)
)
.test()
.awaitDone(500, TimeUnit.SECONDS)
.assertResult(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
}
}
This is something that looks that is working using Reactor's Flux.create(). I changed the API a bit.
public class FlowableGenerate4
{
private static class API
{
private ExecutorService es = Executors.newFixedThreadPool(1);
private CompletableFuture<Void> done = new CompletableFuture<>();
private AtomicInteger stopCounter = new AtomicInteger(10);
public boolean isDone()
{
return done.isDone();
}
public CompletableFuture<Void> getT(Consumer<Object> consumer)
{
es.submit(() -> {
try {
Thread.sleep(100);
} catch (Exception e) {
}
if (stopCounter.decrementAndGet() < 0)
done.complete(null);
else
consumer.accept(new Object());
});
return done;
}
}
private static class Callback implements Consumer<Object>
{
private API api;
private FluxSink<Object> sink;
public Callback(API api, FluxSink<Object> sink)
{
this.api = api;
this.sink = sink;
}
#Override
public void accept(Object o)
{
sink.next(o);
if (sink.requestedFromDownstream() > 0 && !api.isDone())
api.getT(this);
else
sink.currentContext().<AtomicBoolean>get("inProgress")
.set(false);
}
}
private Publisher<Object> reactorPublisher()
{
API api = new API();
return
Flux.create(sink -> {
sink.onRequest(n -> {
//if it's in progress already, do nothing
//I understand that onRequest() can be called asynchronously
//regardless if the previous call demand has been satisfied or not
if (!sink.currentContext().<AtomicBoolean>get("inProgress")
.compareAndSet(false, true))
return;
//else kick off calls to API
api.getT(new Callback(api, sink))
.whenComplete((o, t) -> {
if (t != null)
sink.error(t);
else
sink.complete();
});
});
}).subscriberContext(
Context.empty().put("inProgress", new AtomicBoolean(false)));
}
#Test
public void test()
{
Flowable.fromPublisher(reactorPublisher())
.skip(5)
.take(10)
.blockingSubscribe(
i -> System.out.println("onNext()"),
Throwable::printStackTrace,
() -> System.out.println("onComplete()")
);
}
}
I'm working towards properly integrating the stanford segmenter within SOLR for chinese tokenization.
This plugin involves loading other jar files and model files. I've got it working in a crude manner by hardcoding the complete path for the files.
I'm looking for methods to create the plugin where the paths need not be hardcoded and also to have the plugin in conformance with the SOLR plugin architecture. Please let me know if there are any recommended sites or tutorials for this.
I've added my code below :
public class ChineseTokenizerFactory extends TokenizerFactory {
/** Creates a new WhitespaceTokenizerFactory */
public ChineseTokenizerFactory(Map<String,String> args) {
super(args);
assureMatchVersion();
if (!args.isEmpty()) {
throw new IllegalArgumentException("Unknown parameters: " + args);
}
}
#Override
public ChineseTokenizer create(AttributeFactory factory, Reader input) {
Reader processedStringReader = new ProcessedStringReader(input);
return new ChineseTokenizer(luceneMatchVersion, factory, processedStringReader);
}
}
public class ProcessedStringReader extends java.io.Reader {
private static final int BUFFER_SIZE = 1024 * 8;
//private static TextProcess m_textProcess = null;
private static final String basedir = "/home/praveen/PDS_Meetup/solr-4.9.0/custom_plugins/";
static Properties props = null;
static CRFClassifier<CoreLabel> segmenter = null;
private char[] m_inputData = null;
private int m_offset = 0;
private int m_length = 0;
public ProcessedStringReader(Reader input){
char[] arr = new char[BUFFER_SIZE];
StringBuffer buf = new StringBuffer();
int numChars;
if(segmenter == null)
{
segmenter = new CRFClassifier<CoreLabel>(getProperties());
segmenter.loadClassifierNoExceptions(basedir + "ctb.gz", getProperties());
}
try {
while ((numChars = input.read(arr, 0, arr.length)) > 0) {
buf.append(arr, 0, numChars);
}
} catch (IOException e) {
e.printStackTrace();
}
m_inputData = processText(buf.toString()).toCharArray();
m_offset = 0;
m_length = m_inputData.length;
}
#Override
public int read(char[] cbuf, int off, int len) throws IOException {
int charNumber = 0;
for(int i = m_offset + off;i<m_length && charNumber< len; i++){
cbuf[charNumber] = m_inputData[i];
m_offset ++;
charNumber++;
}
if(charNumber == 0){
return -1;
}
return charNumber;
}
#Override
public void close() throws IOException {
m_inputData = null;
m_offset = 0;
m_length = 0;
}
public String processText(String inputText)
{
List<String> segmented = segmenter.segmentString(inputText);
String output = "";
if(segmented.size() > 0)
{
output = segmented.get(0);
for(int i=1;i<segmented.size();i++)
{
output = output + " " +segmented.get(i);
}
}
System.out.println(output);
return output;
}
static Properties getProperties()
{
if (props == null) {
props = new Properties();
props.setProperty("sighanCorporaDict", basedir);
// props.setProperty("NormalizationTable", "data/norm.simp.utf8");
// props.setProperty("normTableEncoding", "UTF-8");
// below is needed because CTBSegDocumentIteratorFactory accesses it
props.setProperty("serDictionary",basedir+"dict-chris6.ser.gz");
props.setProperty("inputEncoding", "UTF-8");
props.setProperty("sighanPostProcessing", "true");
}
return props;
}
}
public final class ChineseTokenizer extends CharTokenizer {
public ChineseTokenizer(Version matchVersion, Reader in) {
super(matchVersion, in);
}
public ChineseTokenizer(Version matchVersion, AttributeFactory factory, Reader in) {
super(matchVersion, factory, in);
}
/** Collects only characters which do not satisfy
* {#link Character#isWhitespace(int)}.*/
#Override
protected boolean isTokenChar(int c) {
return !Character.isWhitespace(c);
}
}
You can pass the argument through the Factory's args parameter.
I wrote an annotator that extracts all CD tagged tokens and the code looks like this
public class WeightAnnotator extends JCasAnnotator_ImplBase {
private Logger logger = Logger.getLogger(getClass().getName());
public static List<Token> weightTokens = new ArrayList<Token>();
public static final String PARAM_STRING = "stringParam";
#ConfigurationParameter(name = PARAM_STRING)
private String stringParam;
#Override
public void initialize(UimaContext context) throws ResourceInitializationException {
super.initialize(context);
}
#Override
public void process(JCas jCas) throws AnalysisEngineProcessException {
logger.info("Starting processing.");
for (Sentence sentence : JCasUtil.select(jCas, Sentence.class)) {
List<Token> tokens = JCasUtil.selectCovered(jCas, Token.class, sentence);
for (Token token : tokens) {
int begin = token.getBegin();
int end = token.getEnd();
if (token.getPos().equals( PARAM_STRING)) {
WeightAnnotation ann = new WeightAnnotation(jCas, begin, end);
ann.addToIndexes();
System.out.println("Token: " + token.getCoveredText());
}
}
}
}
}
but when I am trying to create an iterator on it in a pipeline, the iterator is returning null. Here is how my pipeline looks.
AnalysisEngineDescription weightDescriptor = AnalysisEngineFactory.createEngineDescription(WeightAnnotator.class,
WeightAnnotator.PARAM_STRING, "CD"
);
AggregateBuilder builder = new AggregateBuilder();
builder.add(sentenceDetectorDescription);
builder.add(tokenDescriptor);
builder.add(posDescriptor);
builder.add(weightDescriptor);
builder.add(writer);
for (JCas jcas : SimplePipeline.iteratePipeline(reader, builder.createAggregateDescription())) {
Iterator iterator1 = JCasUtil.iterator(jcas, WeightAnnotation.class);
while (iterator1.hasNext()) {
WeightAnnotation weights = (WeightAnnotation) iterator1.next();
logger.info("Token: " + weights.getCoveredText());
}
}
I generated WeightAnnotator and WeightAnnotator_Type using JCasGen. I debugged the entire code but I don't understand where I am getting this wrong. Any ideas on how to improve this are appreciated.
Using GWT 2.4...
I am building upon a complex Composite dual view/edit mode implementation that is backed GWT's DataGrid and MultiSelectionModel. My goal is for a user to be able to click a checkbox in each row that they'd like to post updates for.
Here's a screenshot from a semi-functional interface:
Note the selected (highlighted) rows.
Now the problem is that when I type something in any of the cells (e.g., the first row's $ cell under the $/Mw 1 composite cell header), then click that row's checkbox (or any other row's checkbox for that matter) to select or de-select, the value gets reset to the original value when the screen's data was first requested. Not desired behavior by any stretch!
Let's take a look at my custom implementation for the grid. (Excuse the length).
public abstract class ToggleableGrid<T extends Identifiable<?>> extends Composite {
private static final int CHKBOX_COLUMN_WIDTH = App.INSTANCE.checkboxColumnWidth();
private static final DisplayMode DEFAULT_MODE = DisplayMode.VIEW;
private ProvidesKey<T> keyProvider;
private DataGrid<T> grid;
private MultiSelectionModel<T> selectionModel;
private ListDataProvider<T> dataProvider;
private int tabIndex = 0;
public ToggleableGrid() {
final DataGridConfiguration config = new DefaultDataGridConfiguration();
initGrid(config);
}
public ToggleableGrid(DataGridConfiguration config) {
initGrid(config);
}
private void initGrid(DataGridConfiguration config) {
keyProvider = new ProvidesKey<T>() {
#Override
public Object getKey(T item) {
return item == null ? null : item.getId();
}
};
grid = new DataGrid<T>(config.getPageSize(), config.getResources(), keyProvider);
// Set the message to display when the table is empty.
grid.setEmptyTableWidget(new Label(UiMessages.INSTANCE.no_results()));
initWidget(grid);
setVisible(true);
}
public void setInput(List<T> content) {
setInput(content, DEFAULT_MODE);
}
public void setInput(List<T> content, DisplayMode mode) {
resetTableColumns();
if (isInEditMode(mode)) {
// Add a selection model so we can select cells
selectionModel = new MultiSelectionModel<T>(keyProvider);
grid.setSelectionModel(selectionModel, DefaultSelectionEventManager.<T> createCheckboxManager(0));
addRowSelector();
}
dataProvider = new ListDataProvider<T>(content);
final ListHandler<T> sortHandler = new ListHandler<T>(dataProvider.getList());
grid.addColumnSortHandler(sortHandler);
initializeStructure(constructMetadata(), sortHandler, mode);
dataProvider.addDataDisplay(grid);
}
// see https://stackoverflow.com/questions/3772480/remove-all-columns-from-a-celltable
// concrete classes are forced to maintain a handle on all columns added
private void resetTableColumns() {
for (final Column<T, ?> column: allColumns()) {
grid.removeColumn(column);
}
allColumns().clear();
}
protected boolean isInEditMode(DisplayMode currentDisplayMode) {
boolean result = false;
if (currentDisplayMode.equals(DisplayMode.EDIT)) {
result = true;
}
return result;
}
protected abstract Set<Column<T, ?>> allColumns();
protected abstract TableMetadata constructMetadata();
protected abstract void initializeStructure(TableMetadata metadata, ListHandler<T> sortHandler, DisplayMode mode);
protected void setColumnHorizontalAlignment(Column<T, ?> column, HorizontalAlignmentConstant alignment) {
column.setHorizontalAlignment(alignment);
}
// TODO figure out how to add a checkbox to column header that provides select/de-select all capability
// see https://stackoverflow.com/questions/6174689/gwt-celltable-programmatically-select-checkboxcell
protected void addRowSelector() {
final Column<T, Boolean> rowSelectColumn = new Column<T, Boolean>(new CheckboxCell(true, false)) {
#Override
public Boolean getValue(T value) {
Boolean result;
// check for null value and return null;
if(value == null || value.getId() == null) {
result = null;
} else { // get value from the selection model
result = selectionModel.isSelected(value);
}
return result;
}
};
addColumn(rowSelectColumn, UiMessages.INSTANCE.select());
setColumnWidth(rowSelectColumn, CHKBOX_COLUMN_WIDTH, Unit.PX);
setColumnHorizontalAlignment(rowSelectColumn, HasHorizontalAlignment.ALIGN_CENTER);
}
protected void setColumnWidth(Column<T, ?> column, int width, Unit unit) {
grid.setColumnWidth(column, width, unit);
}
protected void addColumn(Column<T, ?> column, String columnHeaderName) {
addColumn(column, columnHeaderName, HasHorizontalAlignment.ALIGN_RIGHT);
}
protected void addColumn(Column<T, ?> column, String columnHeaderName, HorizontalAlignmentConstant alignment) {
final SafeHtmlBuilder sb = new SafeHtmlBuilder();
final String divStart = "<div align=\""+ alignment.getTextAlignString() + "\" class=\"" +UiResources.INSTANCE.style().word_wrap() + "\">";
sb.appendHtmlConstant(divStart).appendEscaped(columnHeaderName).appendHtmlConstant("</div>");
final SafeHtml header = sb.toSafeHtml();
grid.addColumn(column, header);
allColumns().add(column);
}
protected CompositeCell<T> generateCompositeCell(final List<HasCell<T, ?>> hasCells) {
final CompositeCell<T> compositeCell = new CompositeCell<T>(hasCells) {
#Override
public void render(Context context, T value, SafeHtmlBuilder sb) {
sb.appendHtmlConstant("<table><tbody><tr>");
super.render(context, value, sb);
sb.appendHtmlConstant("</tr></tbody></table>");
}
#Override
protected Element getContainerElement(Element parent) {
// Return the first TR element in the table.
return parent.getFirstChildElement().getFirstChildElement().getFirstChildElement();
}
#Override
protected <X> void render(Context context, T value,
SafeHtmlBuilder sb, HasCell<T, X> hasCell) {
final Cell<X> cell = hasCell.getCell();
sb.appendHtmlConstant("<td>");
cell.render(context, hasCell.getValue(value), sb);
sb.appendHtmlConstant("</td>");
}
};
return compositeCell;
}
// FIXME not working quite the way we'd expect, index incremented within column for each row, not each row by column
protected int nextTabIndex() {
tabIndex++;
return tabIndex;
}
protected AbstractCellTable<T> getGrid() {
return grid;
}
/**
* Gets the selected (row(s) of) data from grid (used in edit mode)
* #return the selected data (as per selection model)
*/
public List<T> getSelectedData() {
final List<T> data = new ArrayList<T>();
data.addAll(selectionModel.getSelectedSet());
return data;
}
/**
* Gets all (row(s) of) data in grid (used in edit mode)
* #return all data as list
*/
public List<T> getAllData() {
return dataProvider.getList();
}
/**
* Clears the currently selected (row(s) of) data (used in edit mode)
*/
public void clearSelectedData() {
selectionModel.clear();
grid.redraw();
}
}
So, the interesting methods to stare at above (I think) are setInput, generateCompositeCell and addRowSelector.
We initialize the grid with List data and set a display mode in setInput. It's here as well that the selection model is initialized. It uses GWT's DefaultSelectionEventManager createCheckboxManager().
I've been trying to grok the event model, but it eludes me. I've visited the following sources online, but have come up short on avenues to solving this problem.
-- https://groups.google.com/forum/?fromgroups#!topic/google-web-toolkit/k5sfURxDaVg
AbstractInputCell's getConsumedEventsImpl adds focus, blur and keydown, so this (I believe) is not a track I need to explore
-- GWT CellTable programmatically select CheckBoxCell
The various ways you can instantiate a CheckBoxCell got me curious, and I've tried many constructor argument permutations, but the one I settled on (true, false) is (I believe) the right one
Agreeing here and now (before being reprimanded) that there's perhaps some unnecessary complexity in my implementation, but I am looking for guidance nonetheless. Thanks!
Update
If it helps here's an impl of the aforementioned ToggleableGrid. If anything it gives you more detail on what goes into each CompositeCell. For details on AbstractValidatableColumn and ValidatableInputCell, see: In search of a GWT validation example... where art thou?.
public class EnergyOfferGrid extends ToggleableGrid<EnergyOfferDTO> {
public EnergyOfferGrid() {
super();
}
public EnergyOfferGrid(DataGridConfiguration config) {
super(config);
}
private static final int MAX_NUMBER_OF_MW_PRICE_POINTS = App.INSTANCE.maxNoOfMwPricePoints();
private Set<Column<EnergyOfferDTO, ?>> columns = new HashSet<Column<EnergyOfferDTO, ?>>();
#Override
protected Set<Column<EnergyOfferDTO, ?>> allColumns() {
return columns;
}
#Override
protected TableMetadata constructMetadata() {
final TableMetadata metadata = new TableMetadata();
// TODO Consider a predefined set of ReferenceData to be held in a common package
// Use Slope
metadata.addColumnMetadata(UiMessages.INSTANCE.use_slope(), new String[] {UiMessages.INSTANCE.yes(), UiMessages.INSTANCE.no()}, new String[] {"true", "false"});
return metadata;
}
#Override
protected void initializeStructure(TableMetadata metadata, ListHandler<EnergyOfferDTO> sortHandler, DisplayMode currentDisplayMode) {
addHourColumn(sortHandler);
addUseSlopeColumn(metadata, sortHandler, currentDisplayMode);
for (int i = 0; i < MAX_NUMBER_OF_MW_PRICE_POINTS; i++) { // zero-based indexing
addPriceMwColumn(i, currentDisplayMode);
}
}
protected void addHourColumn(ListHandler<EnergyOfferDTO> sortHandler) {
final Column<EnergyOfferDTO, String> hourColumn = new Column<EnergyOfferDTO, String>(new TextCell()) {
#Override
public String getValue(EnergyOfferDTO energyOffer) {
String result = "";
if (energyOffer.getId() != null) {
final String isoDateTime = energyOffer.getId().getOperatingHour();
if (isoDateTime != null && !isoDateTime.isEmpty()) {
final Date dateTime = CSTimeUtil.isoToDate(isoDateTime);
if (dateTime != null) {
result = CSTimeUtil.dateToHour(dateTime);
}
}
}
return result;
}
};
hourColumn.setSortable(true);
sortHandler.setComparator(hourColumn, new Comparator<EnergyOfferDTO>() {
#Override
public int compare(EnergyOfferDTO eo1, EnergyOfferDTO eo2) {
final String date1 = eo1.getId() != null ? eo1.getId().getOperatingHour() : "";
final String date2 = eo2.getId() != null ? eo2.getId().getOperatingHour() : "";
return date1.compareTo(date2);
}
});
// We know that the data is sorted by hour by default.
getGrid(). getColumnSortList().push(hourColumn);
addColumn(hourColumn, UiMessages.INSTANCE.hour());
setColumnWidth(hourColumn, 45, Unit.PX);
setColumnHorizontalAlignment(hourColumn, HasHorizontalAlignment.ALIGN_RIGHT);
}
protected void addUseSlopeColumn(TableMetadata metadata, ListHandler<EnergyOfferDTO> sortHandler, DisplayMode currentDisplayMode) {
final ReferenceData refData = metadata.allColumnMetadata().get(UiMessages.INSTANCE.use_slope());
Column<EnergyOfferDTO, String> useSlopeColumn;
Cell<String> cell;
if (isInEditMode(currentDisplayMode)) {
cell = new ReferenceDataBackedSelectionCell(refData);
} else {
cell = new TextCell();
}
useSlopeColumn = new Column<EnergyOfferDTO, String>(cell) {
#Override
public String getValue(EnergyOfferDTO energyOffer) {
return refData.getDisplayValueForSubmitValue(Boolean.toString(energyOffer.isSlopeUsed()));
}
};
useSlopeColumn.setSortable(true);
sortHandler.setComparator(useSlopeColumn, new Comparator<EnergyOfferDTO>() {
#Override
public int compare(EnergyOfferDTO eo1, EnergyOfferDTO eo2) {
final String slopeUsed1 = String.valueOf(eo1.isSlopeUsed());
final String slopeUsed2 = String.valueOf(eo1.isSlopeUsed());
return slopeUsed1.compareTo(slopeUsed2);
}
});
addColumn(useSlopeColumn, UiMessages.INSTANCE.use_slope());
setColumnWidth(useSlopeColumn, 75, Unit.PX);
setColumnHorizontalAlignment(useSlopeColumn, HasHorizontalAlignment.ALIGN_RIGHT);
}
protected void addPriceMwColumn(final int colIndex, DisplayMode currentDisplayMode) {
// Construct a composite cell for energy offers that includes a pair of text inputs
final List<HasCell<EnergyOfferDTO, ?>> columns = new ArrayList<
HasCell<EnergyOfferDTO, ?>>();
// this DTO is passed along so that price and mw values for new entries are kept together
final OfferPriceMwPair newOfferPriceMwPair = new OfferPriceMwPair();
// Price
final Column<EnergyOfferDTO, String> priceColumn = generatePriceColumn(colIndex, newOfferPriceMwPair, currentDisplayMode);
columns.add(priceColumn);
// MW
final Column<EnergyOfferDTO, String> mwColumn = generateMwColumn(colIndex, newOfferPriceMwPair, currentDisplayMode);
columns.add(mwColumn);
// Composite
final CompositeCell<EnergyOfferDTO> priceMwColumnInnards = generateCompositeCell(columns);
final IdentityColumn<EnergyOfferDTO> priceMwColumn = new IdentityColumn<EnergyOfferDTO>(priceMwColumnInnards);
final StringBuilder colHeader = new StringBuilder();
colHeader.append(UiMessages.INSTANCE.price_mw_header()).append(" ").append(String.valueOf(colIndex + 1));
addColumn(priceMwColumn, colHeader.toString());
setColumnWidth(priceMwColumn, 7, Unit.EM);
setColumnHorizontalAlignment(priceMwColumn, HasHorizontalAlignment.ALIGN_RIGHT);
}
protected Column<EnergyOfferDTO, String> generatePriceColumn(final int colIndex, final OfferPriceMwPair newOfferPriceMwPair, DisplayMode currentDisplayMode) {
Column<EnergyOfferDTO, String> priceColumn;
if (isInEditMode(currentDisplayMode)) {
priceColumn = new BigDecimalValidatableColumn<EnergyOfferDTO, OfferPriceMwPair>(nextTabIndex(), getGrid()) {
#Override
public String getValue(EnergyOfferDTO energyOffer) {
return obtainPriceValue(colIndex, energyOffer, false);
}
#Override
public void doUpdate(int index, EnergyOfferDTO energyOffer, String value) {
if (value != null && !value.isEmpty()) {
// number format exceptions should be caught and handled by event bus's handle method
final double valueAsDouble = NumberFormat.getDecimalFormat().parse(value);
final BigDecimal price = BigDecimal.valueOf(valueAsDouble);
final List<OfferPriceMwPair> offerPriceCurve = energyOffer.getCurve();
final OfferPriceMwPair offerPriceMwPair = offerPriceCurve.get(colIndex);
if (offerPriceMwPair == null) { // we have a new price value
newOfferPriceMwPair.setPrice(price);
offerPriceCurve.add(newOfferPriceMwPair);
} else {
offerPriceMwPair.setPrice(price);
}
}
}
#Override
protected String getPropertyName() {
return "price";
}
#Override
protected Class<OfferPriceMwPair> getPropertyOwner() {
return OfferPriceMwPair.class;
}
};
} else {
priceColumn = new Column<EnergyOfferDTO, String>(new TextCell()) {
#Override
public String getValue(EnergyOfferDTO energyOffer) {
final String result = obtainPriceValue(colIndex, energyOffer, true);
return result;
}
};
}
return priceColumn;
}
private String obtainPriceValue(final int colIndex, EnergyOfferDTO energyOffer, boolean withCurrency) {
String result = "";
if (energyOffer != null) {
final List<OfferPriceMwPair> offerPriceCurve = energyOffer.getCurve();
final int numberOfPairs = offerPriceCurve.size();
if (colIndex < numberOfPairs) {
final OfferPriceMwPair offerPriceMwPair = offerPriceCurve.get(colIndex);
if (offerPriceMwPair != null) {
final BigDecimal price = offerPriceMwPair.getPrice();
if (price != null) {
final double value = price.doubleValue();
if (withCurrency) {
result = NumberFormat.getCurrencyFormat().format(value);
} else {
result = NumberFormat.getDecimalFormat().format(value);
}
}
}
}
}
return result;
}
protected Column<EnergyOfferDTO, String> generateMwColumn(final int colIndex, final OfferPriceMwPair newOfferPriceMwPair, DisplayMode currentDisplayMode) {
Column<EnergyOfferDTO, String> mwColumn;
if (isInEditMode(currentDisplayMode)) {
mwColumn = new BigDecimalValidatableColumn<EnergyOfferDTO, PriceMwPair>(nextTabIndex(), getGrid()) {
#Override
public String getValue(EnergyOfferDTO energyOffer) {
return obtainMwValue(colIndex, energyOffer);
}
#Override
public void doUpdate(int index, EnergyOfferDTO energyOffer, String value) {
if (value != null && !value.isEmpty()) {
// number format exceptions should be caught and handled by event bus's handle method
final double valueAsDouble = NumberFormat.getDecimalFormat().parse(value);
final BigDecimal mw = BigDecimal.valueOf(valueAsDouble);
final List<OfferPriceMwPair> offerPriceCurve = energyOffer.getCurve();
final OfferPriceMwPair offerPriceMwPair = offerPriceCurve.get(colIndex);
if (offerPriceMwPair == null) { // we have a new price value
newOfferPriceMwPair.setMw(mw);
offerPriceCurve.add(newOfferPriceMwPair);
} else {
offerPriceMwPair.setMw(mw);
}
}
}
#Override
protected String getPropertyName() {
return "mw";
}
#Override
protected Class<PriceMwPair> getPropertyOwner() {
return PriceMwPair.class;
}
};
} else {
mwColumn = new Column<EnergyOfferDTO, String>(new TextCell()) {
#Override
public String getValue(EnergyOfferDTO energyOffer) {
final String result = obtainMwValue(colIndex, energyOffer);
return result;
}
};
}
return mwColumn;
}
private String obtainMwValue(final int colIndex, EnergyOfferDTO energyOffer) {
String result = "";
if (energyOffer != null) {
final List<OfferPriceMwPair> offerPriceCurve = energyOffer.getCurve();
final int numberOfPairs = offerPriceCurve.size();
if (colIndex < numberOfPairs) {
final PriceMwPair offerPriceMwPair = offerPriceCurve.get(colIndex);
if (offerPriceMwPair != null) {
final BigDecimal mw = offerPriceMwPair.getMw();
if (mw != null) {
result = NumberFormat.getDecimalFormat().format(mw);
}
}
}
}
return result;
}
}
All that custom work w.r.t. WrapperCell and CompositeValidatableColumn was unnecessary.
It turns out that there's a way you should not construct CompositeCells. See http://code.google.com/p/google-web-toolkit/issues/detail?id=5714. My CompositeCells were not receiving events. So, I changed the way I construct them in ToggleableGrid.
protected CompositeCell<T> generateCompositeCell(final List<HasCell<T, String>> hasCells) {
final CompositeCell<T> compositeCell = new CompositeCell<T>(hasCells) {
// to not run afoul of http://code.google.com/p/google-web-toolkit/issues/detail?id=5714
#Override
public void render(Context context, T value, SafeHtmlBuilder sb) {
sb.appendHtmlConstant("<div style=\"display: inline\">");
super.render(context, value, sb);
sb.appendHtmlConstant("</div>");
}
#Override
protected Element getContainerElement(Element parent) {
// Return the first element in the DIV.
return parent.getFirstChildElement();
}
};
return compositeCell;
}
After that change and incorporating my other validation-oriented classes: ValidatableFieldUpdater, AbstractValidatableColumn (and derivatives), ValidatableInputField and ConversionResult, life couldn't be more grand!