I have a method in Java for unmarshalling XML-files with the given URL.
For URL's like "http:// ..." everything works fine, but for URL's like "file://localhost/C:/Users/.../filename.xml" I receive following exception.
I have no idea why he won't accept my "file://localhost/"-URL's.
javax.xml.bind.UnmarshalException
- with linked exception:
[org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.]
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.createUnmarshalException(AbstractUnmarshallerImpl.java:335)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.createUnmarshalException(UnmarshallerImpl.java:563)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:249)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:214)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:157)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:204)
at preferee.data.access.IO_transfer.jaxb.XMLconverter.getItemFromStream(XMLconverter.java:40)
at preferee.data.access.IO_transfer.jaxb.XMLconverter.getItemFromURL(XMLconverter.java:57)
at preferee.data.access.testServer.LocalTestServer.<init>(LocalTestServer.java:42)
at preferee.data.access.testServer.TestProvider.<init>(TestProvider.java:16)
at preferee.data.access.Providers.createTestProvider(Providers.java:29)
at preferee.tests.FakeServerTests.MovieDao_TEST.run(MovieDao_TEST.java:22)
at preferee.tests.FakeServerTests.MovieDao_TEST.main(MovieDao_TEST.java:16)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:441)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1436)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:999)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:649)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:243)
By the way this is my method-implementation:
Class classObject = ... ;
public T getItemFromURL(String url) throws DataAccessException {
JAXBContext jc = null;
T item = null;
try (InputStream XML_Stream = new URL(url).openStream();)
{
jc = JAXBContext.newInstance(classObject);
item = (T) jc.createUnmarshaller().unmarshal(XML_Stream);
} catch (IOException e) {
throw new DataAccessException("( originele error: " + e.getClass() +" ) " + e.getMessage() + ": Kon Bestand niet ophalen of lezen." );
} catch (JAXBException e) {
throw new DataAccessException(e.getMessage());
}
return item;
}
Your URL for hitting your file system is not correct. It should be like:
file:///c|/path/to/file
Update
Will this "file:///" work on other systems like mac, linux?
You can use a file URL on any OS. Of course the URL needs to match the file layout there (i.e. no C drive in Linux).
And is there any way to convert c:\ ... to c|/ ... / easily?
File file = new File("C:/Users/.../filename.xml");
String url = file.toURI().toURL().toString();
Related
Read some excel using poi failed, encountered such an error
Caused by: org.xml.sax.SAXParseException; systemId: file://; lineNumber: 105; columnNumber: 147342; An invalid XML character (Unicode: 0xffff) was found in the element content of the document.
at java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:204)
at java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:178)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:400)
From xl/sharedStrings.xml, there exist <ffff> cause this problem.
How could read it successfully and just ignore these invalid characters? e.g.
aaa <ffff> bbb ==> aaa bbb
Those invalid characters should not be in the XML and Excel itself will not put them into there. So someone probably had done something wrong while creating that file using something else than Excel. That error should be avoided rather than trying to ignore the symptoms.
But I know how it feels to be depemdent on others work which will be done in far future, if even. So one needs improvising. But that is in this case only possible using ugly low level methods. Because the XML is invalid, parsing XML is not possible. So only String replacing will be possible.
In APACHE POI EXCEL XmlException: is an invalid XML character, is there any way to preprocess the excel file? I had schown this already. In that case to replace UTF-16-surrogate-pair numeric character references which also are invalid in XML.
In following I will show a code which is more flexible to add multiple other repairing actions to /xl/sharedStrings.xml if necessary.
The principle is using OPCPackage, which is the *.xlsx ZIP package, to get out the /xl/sharedStrings.xml as text string. Then do the needed replacings and put the repaired /xl/sharedStrings.xml back into the OPCPackage. Then do creating the XSSFWorkbook from that repaired OPCPackage instead of from the corrupt file.
import java.io.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.openxml4j.opc.*;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
class RepairSharedStringsTable {
static String removeInvalidXmlCharacters(String string) {
String xml10pattern = "[^"
+ "\u0009\r\n"
+ "\u0020-\uD7FF"
+ "\uE000-\uFFFD"
+ "\ud800\udc00-\udbff\udfff"
+ "]";
string = string.replaceAll(xml10pattern, "");
return string;
}
static void repairSharedStringsTable(OPCPackage opcPackage) {
for (PackagePart packagePart : opcPackage.getPartsByName(Pattern.compile("/xl/sharedStrings.xml"))) {
String sharedStrings = "";
try (BufferedInputStream inputStream = new BufferedInputStream(packagePart.getInputStream());
ByteArrayOutputStream sharedStringsBytes = new ByteArrayOutputStream() ) {
byte[] buffer = new byte[1024];
int length;
while ((length = inputStream.read(buffer)) != -1) {
sharedStringsBytes.write(buffer, 0, length);
}
sharedStrings = sharedStringsBytes.toString("UTF-8");
} catch (Exception ex) {
ex.printStackTrace();
}
System.out.println(sharedStrings);
//sharedStrings = replaceUTF16SurrogatePairs(sharedStrings);
sharedStrings = removeInvalidXmlCharacters(sharedStrings);
//sharedStrings = doSomethingElse(sharedStrings);
System.out.println(sharedStrings);
try (BufferedOutputStream outputStream = new BufferedOutputStream(packagePart.getOutputStream()) ) {
outputStream.write(sharedStrings.getBytes("UTF-8"));
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
public static void main(String[] args) throws Exception {
try (XSSFWorkbook workbook = new XSSFWorkbook(new FileInputStream("./Excel.xlsx"))) {
System.out.println("success");
} catch (Exception ex) {
System.out.println("failed");
ex.printStackTrace();
}
OPCPackage opcPackage = OPCPackage.open(new FileInputStream("./Excel.xlsx"));
repairSharedStringsTable(opcPackage);
opcPackage.flush();
try (XSSFWorkbook workbook = new XSSFWorkbook(opcPackage);
FileOutputStream out = new FileOutputStream("./ExcelRepaired.xlsx");) {
workbook.write(out);
System.out.println("success");
} catch (Exception ex) {
System.out.println("failed");
ex.printStackTrace();
}
}
}
In my case below files all have invalid characters
xl/sharedStrings.xml
xl/worksheets/sheet1.xml
xl/worksheets/sheet8.xml
All these xml should be processed
opcPackage.getPartsByName(Pattern.compile("(/xl/sharedStrings.xml)|(/xl/worksheets/.+\\.xml)"))
I am working on a stand-alone WinForm program in C# that uses the Solidworks EPDM api. The program takes a top level assembly and finds all the referenced and referencing files in the assembly. e.g. all sub-assemblies, part files, and drawings. The program then checks out all the files from EPDM, updates the data cards, and checks in all the files back to the EPDM.
I have successfully implemented the portion of the code that finds all the referenced and referencing files and updates the data card information using a background worker. This portion of the code does not require access the the UI thread. I would like to be able to add the code that checks out the files and checks them back in within a background worker. The problem is that the methods used to do the checkout and check-in take this.Handle as an argument. I know that accessing the UI thread from within a background worker will throw a cross thread exception. The code does not access any of the UI controls. It only need access to this.Handle. Is it possible to pass this.Handle to a background worker in a thread safe way that will not throw a cross thread exception?
This is my first use of background workers so my knowledge is limited. Below is the code that I would like to run in a background worker.
private void BatchCheckout(Dictionary<string, string> SelectedFiles)
{
try
{
IEdmBatchGet batchGetter = (IEdmBatchGet)vault.CreateUtility(EdmUtility.EdmUtil_BatchGet);
EdmSelItem[] ppoSelection = new EdmSelItem[SelectedFiles.Count];
IEdmFile5 aFile;
IEdmFolder5 aFolder;
IEdmFolder5 ppoRetParentFolder;
IEdmPos5 aPos;
int i = 0;
foreach (KeyValuePair<string, string> kvp in SelectedFiles)
{
aFile = vault1.GetFileFromPath(kvp.Key, out ppoRetParentFolder);
aPos = aFile.GetFirstFolderPosition();
aFolder = aFile.GetNextFolder(aPos);
ppoSelection[i] = new EdmSelItem();
ppoSelection[i].mlDocID = aFile.ID;
ppoSelection[i].mlProjID = aFolder.ID;
i = i + 1;
}
batchGetter.AddSelection((EdmVault5)vault1, ref ppoSelection);
batchGetter.CreateTree(this.Handle.ToInt32(), (int)EdmGetCmdFlags.Egcf_Lock);
batchGetter.GetFiles(this.Handle.ToInt32(), null);
}
catch (System.Runtime.InteropServices.COMException ex)
{
MessageBox.Show("HRESULT = 0x" + ex.ErrorCode.ToString("X") + " " + ex.Message);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + "\n" + GetStackTrace(ex));
}
}
I have been a reader of StackOverflow for many years and have found answers to just about every question I have ever had. This is my first ever question on StackOverflow. I am really hoping that someone will have an answer to this problem.
EDIT:
I have successfully test AndrewK's suggestion and am happy to report that it did work for my batch checkout method. When I run my batch check-in method in a background worker I'm getting the following COM exception:
Unable to cast COM object of type 'System.__ComObject' to interface type 'EPDM.Interop.epdm.IEdmBatchUnlock2'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{F0970446-4CBB-4F0F-BAF5-F9CD2E09A5B3}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
I only get this exception if I run the code from a background worker.
Here is the code from my BatchCheckin method:
private void BatchCheckin(Dictionary<string, string> SelectedFiles)
{
try
{
int i = 0;
IEdmFolder5 ppoRetParentFolder;
IEdmFile5 aFile;
IEdmFolder5 aFolder;
IEdmPos5 aPos;
EdmSelItem[] ppoSelection = new EdmSelItem[SelectedFiles.Count];
IEdmBatchUnlock2 batchUnlock;
foreach (KeyValuePair<string, string> kvp in SelectedFiles)
{
aFile = vault5.GetFileFromPath(kvp.Key, out ppoRetParentFolder);
aPos = aFile.GetFirstFolderPosition();
aFolder = aFile.GetNextFolder(aPos);
ppoSelection[i] = new EdmSelItem();
ppoSelection[i].mlDocID = aFile.ID;
ppoSelection[i].mlProjID = aFolder.ID;
i = i + 1;
}
batchUnlock = (IEdmBatchUnlock2)vault7.CreateUtility(EdmUtility.EdmUtil_BatchUnlock);
batchUnlock.AddSelection((EdmVault5)vault5, ref ppoSelection);
batchUnlock.CreateTree(0, (int)EdmUnlockBuildTreeFlags.Eubtf_ShowCloseAfterCheckinOption + (int)EdmUnlockBuildTreeFlags.Eubtf_MayUnlock);
batchUnlock.Comment = "Updates";
batchUnlock.UnlockFiles(0, null);
}
catch (System.Runtime.InteropServices.COMException ex)
{
MessageBox.Show("HRESULT = 0x" + ex.ErrorCode.ToString("X") + " " + ex.Message);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + "\n" + GetStackTrace(ex));
}
}
I am getting the exception when I make the call to vault7.CreateUtility. The BatchCheckin code is nearly identical to the BatchCheckout. I'm making the same call to vault7.CreateUtility in both methods. The only difference is the EdmUtility flag is set to EdmUtil_BatchUnlock in the BatchCheckin method. Any clue on this one AndrewK?
UPDATE:
I was able to resolve the COM exception by changing batchUpdate from the IEdmBatchUnlock2 interface to the IEdmBatchUnlock interface. Here is the code change:
private void BatchCheckin(Dictionary<string, string> SelectedFiles)
{
int i = 0;
IEdmFolder5 ppoRetParentFolder;
IEdmFile5 aFile;
IEdmFolder5 aFolder;
IEdmPos5 aPos;
EdmSelItem[] ppoSelection = new EdmSelItem[SelectedFiles.Count];
IEdmBatchUnlock batchUnlock = (IEdmBatchUnlock)vault7.CreateUtility(EdmUtility.EdmUtil_BatchUnlock);
try
{
foreach (KeyValuePair<string, string> kvp in SelectedFiles)
{
aFile = vault5.GetFileFromPath(kvp.Key, out ppoRetParentFolder);
aPos = aFile.GetFirstFolderPosition();
aFolder = aFile.GetNextFolder(aPos);
ppoSelection[i] = new EdmSelItem();
ppoSelection[i].mlDocID = aFile.ID;
ppoSelection[i].mlProjID = aFolder.ID;
i = i + 1;
}
batchUnlock.AddSelection((EdmVault5)vault5, ref ppoSelection);
batchUnlock.CreateTree(0, (int)EdmUnlockBuildTreeFlags.Eubtf_ShowCloseAfterCheckinOption + (int)EdmUnlockBuildTreeFlags.Eubtf_MayUnlock);
batchUnlock.Comment = "Release to Production ECO";
batchUnlock.UnlockFiles(0, null);
}
catch (System.Runtime.InteropServices.COMException ex)
{
MessageBox.Show("HRESULT = 0x" + ex.ErrorCode.ToString("X") + " " + ex.Message);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + "\n" + GetStackTrace(ex));
}
}
I am guessing that this is a bug in the IEdmBatchUnlock2 interface. The IEdmBatchUnlock2 will cause a COM exception if called from a background worker but will not cause a COM exception if called from the UI thread. The IEdmBatchUnlock interface will not cause a COM exception when called from a background worker.
Just put a 0 in there for the handle. As long as your code will not require user input, it will work. I do it often.
batchGetter.AddSelection((EdmVault5)vault1, ref ppoSelection);
batchGetter.CreateTree(0, (int)EdmGetCmdFlags.Egcf_Lock);
batchGetter.GetFiles(0, null);
I'm having a very confusing issue with Kafka - specifically trying to obtain the Key of a message.
The key seems to think it's both a String and a byte[]
The following code produces the exception below:
Map<String, Integer> topicCount = new HashMap<>();
topicCount.put(myConsumer.getTopic(), 1);
Map<String, List<KafkaStream<byte[], byte[]>>> consumerStreams = myConsumer.getConsumer().createMessageStreams(topicCount);
List<KafkaStream<byte[], byte[]>> streams = consumerStreams.get(myConsumer.getTopic());
System.out.println("Listening to topic " + myConsumer.getTopic());
for (final KafkaStream stream : streams) {
ConsumerIterator<String, byte[]> it = stream.iterator();
while (it.hasNext()) {
System.out.println("Message received from topic");
MessageAndMetadata<String, byte[]> o = it.next();
Object messageKey = o.key();
System.out.println("messageKey is type: " + messageKey.getClass().getName());
System.out.println("messageKey is type: " + messageKey.getClass().getCanonicalName());
System.out.println("o keyDecoder: " + o.keyDecoder());
System.out.println("Key from message: " + o.key()); //This throws exception - [B cannot be cast to java.lang.String
//System.out.println("Key as String: " + new String(o.key(), StandardCharsets.UTF_8)); //uncomment this compile Exception - no suitable constructor found for String(java.lang.String,java.nio.charset.Charset)
byte[] bytesIn = o.message(); //getting the bytes is fine
System.out.println("MessageAndMetadata: " + o);
///other code cut
}
}
Exception:
Listening to topic MyKafkaTopic
Message received from topic
messageKey is type: [B
messageKey is type: byte[]
o decoder: kafka.serializer.DefaultDecoder#2e0d0acd
[WARNING]
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:293)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: [B cannot be cast to java.lang.String
at com.foo.bar.KafkaCFS.process(KafkaCFS.java:153)
at com.foo.bar.KafkaCFS.run(KafkaCFS.java:63)
at com.foo.bar.App.main(App.java:90)
... 6 more
Maven:
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka_2.10</artifactId>
<version>0.9.0.1</version>
</dependency>
If I uncomment the System.out line then I cannot even compile:
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /C:/Dev/main/java/com/foo/bar/KafkaCFS.java:[152,56] no suitable constructor found for String(java.lang.String,java.nio.charset.Charset)
constructor java.lang.String.String(byte[],int) is not applicable
(argument mismatch; java.lang.String cannot be converted to byte[])
How is it that the compiler thinks the Key is a String (which is what I expected it to be) but that runtime it's a byte array?
What can I do to get the Key as a String?
Thanks,
KA.
This did not match! You are declare streams as KafkaStream<byte[], byte[]> and then you expect ConsumerIterator<String, byte[]> it = stream.iterator(); it should be ConsumerIterator<byte[], byte[]> it = stream.iterator(); to match generics. Then you can get o.key() and create a string from it via new String(o.key());
Better off setting KafkaStream generic parameter type is (byte[], byte[]). Try to change code like this:
ConsumerIterator<byte[], byte[]> it = stream.iterator();
while (it.hasNext()) {
String key = new String(it.next().key());
...
}
I have setup single Cassandra node on VM. i have to create a table with 70000 columns. for this i have written java code that read json file and create table.
here is my java code snippet.
When i run my java code it throws exception after creation some columns.
Exception stack is
public void createTable(String keyspaceName, String tableName) throws FileNotFoundException{
JSONParser jsonParser = new JSONParser();
FileReader fileReader;
String filePath = "";
String columnHeader = "";
//String completeColumnHeader = "";
try{
System.out.println("Inside Create Table");
session.executeAsync("DROP TABLE IF EXISTS "+keyspaceName+"."+tableName+";");
String createQuery = "CREATE TABLE "+keyspaceName+"."+tableName +"(\"P:LanguageID\" text, "
+ "\"P:PdmarticleID\" text, PRIMARY KEY(\"P:PdmarticleID\",\"P:LanguageID\"));";
session.execute(createQuery);
System.out.println("Table created");
filePath = "CassandraTableColumnHeader/FixColumnHeader.json";
fileReader = new FileReader(filePath);
JSONObject jsonObject = (JSONObject) jsonParser.parse(fileReader);
JSONArray jsonArray = (JSONArray) jsonObject.get("columnHeaderName");
int columnHeaderSize = jsonArray.size();
int columnHeaderBatchSize = 1000;
int fromIndex = 0;
int toIndex = columnHeaderBatchSize;
while(columnHeaderSize > 0){
columnHeaderSize -=columnHeaderBatchSize;
for(int i = fromIndex; i < toIndex; i++) {
columnHeader = (String) jsonArray.get(i);
if(columnHeader.equals("P:PdmarticleID")||columnHeader.equals("P:LanguageID")){
continue;
}
session.execute("ALTER TABLE "+keyspaceName+"."+tableName +" ADD "+"\""+columnHeader+"\""+" text;");
}
fromIndex = toIndex;
if(columnHeaderSize < columnHeaderBatchSize){
toIndex += columnHeaderSize;
}else{
toIndex = toIndex + columnHeaderBatchSize;
}
}
}catch(FileNotFoundException fnfe){
throw fnfe;
}catch (ParseException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
Exception in thread "main" com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: /127.0.0.1:9042 (com.datastax.driver.core.exceptions.DriverException: Host replied with server error: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.RuntimeException: java.io.FileNotFoundException: C:\apache-cassandra-new\data\data\system\schema_columnfamilies-45f5b36024bc3f83a3631034ea4fa697\system-schema_columnfamilies-tmplink-ka-4839-Data.db (The process cannot access the file because it is being used by another process)))
at com.datastax.driver.core.exceptions.NoHostAvailableException.copy(NoHostAvailableException.java:84)
at com.datastax.driver.core.DefaultResultSetFuture.extractCauseFromExecutionException(DefaultResultSetFuture.java:265)
at com.datastax.driver.core.DefaultResultSetFuture.getUninterruptibly(DefaultResultSetFuture.java:179)
at com.datastax.driver.core.AbstractSession.execute(AbstractSession.java:52)
at com.datastax.driver.core.AbstractSession.execute(AbstractSession.java:36)
at com.exportstagging.SparkTest.DataLoaderInCassandra.createTable(DataLoaderInCassandra.java:89)
at com.exportstagging.SparkTest.DataLoaderInCassandra.main(DataLoaderInCassandra.java:216)
Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: /127.0.0.1:9042 (com.datastax.driver.core.exceptions.DriverException: Host replied with server error: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.RuntimeException: java.io.FileNotFoundException: C:\apache-cassandra-new\data\data\system\schema_columnfamilies-45f5b36024bc3f83a3631034ea4fa697\system-schema_columnfamilies-tmplink-ka-4839-Data.db (The process cannot access the file because it is being used by another process)))
at com.datastax.driver.core.RequestHandler.reportNoMoreHosts(RequestHandler.java:216)
at com.datastax.driver.core.RequestHandler.access$900(RequestHandler.java:45)
at com.datastax.driver.core.RequestHandler$SpeculativeExecution.sendRequest(RequestHandler.java:276)
at com.datastax.driver.core.RequestHandler$SpeculativeExecution$1.run(RequestHandler.java:374)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
I have stuck here. Please help me. Thanks in advance.
If I were you I might reevaluate creating a table with 70k column headers. Your partition key P:PdmarticleID and full primary key (P:PdmarticleID, P:LanguageID) are the only two pieces of information you will be able to use to get results anyway. So having these other pieces of information explicitly stored in columns is not buying you anything.
A collection (eg. map) can hold onto 64k items, with certain other limitations (see http://wiki.apache.org/cassandra/CassandraLimitations). Is there a way you can split the columns such that you can create multiple tables, with some pieces of information stored in one table and some in another?
I have another question about a "JDWP Error: 21" logged: Unexpected JDWP Error 21
I am trying to parse some XML I gather from a servlet into a J2ME MIDlet with the code below. So far unsuccessfully, I think due to the JDWP error on my HttpConnection how ever the InputStream is filled with XML and once parsed everything inside the Document is null.
Has anyone got and ideas about the JDWP error, and also does that code look like it should work?
In MIDlet I am using JSR-172 API javax.xml.parsers.*.
if(d==form1 && c==okCommand)
{
// Display Webpage
webPage = new TextBox(txtField.getString(),
"",
100000,
TextField.ANY
);
Display.getDisplay(this).setCurrent(webPage);
try
{
HttpConnection conn = (HttpConnection)Connector.open("http://localhost:8080/Blogging_Home/Interface?Page=Bloggers&Action=VIEW&Type=XML");
conn.setRequestMethod(HttpConnection.GET);
int rc = conn.getResponseCode();
getConnectionInformation(conn, webPage);
webPage.setString(webPage.getString() + "Starting....");
String methodString = getStringFromURL("");
if (rc == HttpConnection.HTTP_OK)
{
InputStream is = null;
is = createInputStream(methodString);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder;
Document document;
try
{
builder = factory.newDocumentBuilder();
document = builder.parse(is);
} catch (Exception e) {
e.printStackTrace();
}
}
else
{
webPage.setString(webPage.getString() + "ERROR:" + rc);
}
}
catch(Exception ex)
{
// Handle here
webPage.setString("Error" + ex.toString());
}