Hello,
I don't believe so. I looked in system.xml and the XPathQueryResolver and
autoindex="false".
If this will help, here is my SysConfig from "db/System/". (I changed the
name attributes values for this posting)
--------
Document 'database.xml'
<?xml version="1.0"?>
<database name="db">
<collections>
<collection compressed=" true" name="CHANGEDFORPOST_0">
<filer class="org.apache.xindice.core.filer.BTreeFiler" />
<indexes />
<collections>
<collection compressed=" true" name="CHANGEDFORPOST_1">
<filer class="org.apache.xindice.core.filer.BTreeFiler" />
<indexes />
</collection>
<collection compressed=" true" name="CHANGEDFORPOST_2">
<filer class="org.apache.xindice.core.filer.BTreeFiler" />
<indexes/>
</collection>
</collections>
</collection>
</collections>
</database>
Thanks,
-Nate
> Do you have any indexes enabled?
>
> Todd
>
> [EMAIL PROTECTED] wrote:
>> Hello,
>>
>> Thank you for the reply. I should have included my java memory settings
>> in my previous post. I'm already running tomcat with the following
>> settings:
>> CATALINA_OPTS="-Xms128m -Xmx512m"
>>
>> I'm did some more experiments, and while I get the failure from the
>> getResource() call, I am able to call listResources(), and see that the
>> resource name that I'm trying to access. Sometimes even after I do a
>> successful listResources(), I still get the getResource() failure.
>>
>> Thanks again for the help,
>> -Nate
>>
>>
>>>I want to say I have ran into this before I would try increasing your
>>>memory in your Tomcat. If that doesn't fix the problem let me know and I
>>>can look into it deeper.
>>>
>>>Add this
>>>
>>>JAVA_OPTS="$JAVA_OPTS -Xmx512m"
>>>
>>>To the the top of catalina.sh
>>>
>>>Todd
>>>
>>>[EMAIL PROTECTED] wrote:
>>>
>>>>Hello,
>>>>
>>>>I searched around these mail archives for posts about
>>>>NullPointerExceptions, but I wasn't able to find a solution to my
>>>>problem
>>>>below. Any advice on how to find a solution would be greatly
>>>>appreciated.
>>>>
>>>>Here is the message I receive from XMLDBException.GetMessage() call:
>>>> Failed to execute command 'GetResource' on server:
>>>>http://localhost:8080/xindice/, message: java.lang.Exception:
>>>>java.lang.NullPointerException
>>>>
>>>>I'm using the following versions:
>>>> Xindice: 1.1b4
>>>> Tomcat: 5.0.25
>>>> JVM: 1.4.2_01-b06
>>>> OS: Linux 2.4.18-14
>>>>
>>>>Here is the sequence that causes this error:
>>>> 1. User updates web form and post to my Servlet
>>>> 2. My servlet does a GetResource() to pull the current version of the
>>>>XML data.
>>>> 3. My servlet updates the XML data.
>>>> 4. My servlet does a createResource() and storeResource() to update
>>>>the
>>>>XML data back into Xindice.
>>>> 5. ... later user repeats steps 1 to 4.
>>>>
>>>>Each time the user updates the form to Add/Update/Delete data. About
>>>>one
>>>>in every ten cycles the NullPointException will be thrown when I
>>>> perform
>>>>the GetResource(). I tried having my code sleep for 2 seconds after
>>>> the
>>>>first GetResource() failed and then retry to call, but that only solves
>>>>the problem once in awhile.
>>>>
>>>>My XML data is usually somewhere in the 5 - 200 Kb range. A posting
>>>>said
>>>>a storeResource should take about 3ms/KB, so I thought sleeping for 2
>>>>seconds should have been enough delay for any of my files.
>>>>
>>>>Thanks for the help,
>>>>-Nate
>>>>
>>>>Here is some code snippets. I create a singleton that owns this class,
>>>>so
>>>>there is only one of these (currently). Therefore EnableDatabase() is
>>>>only executed once the first time that object is used.
>>>>
>>>>
>>>>/*
>>>> * XindiceGateway.java
>>>> *
>>>> * Created on August 25, 2004, 9:31 PM
>>>> */
>>>>
>>>>package org.test.gateways;
>>>>
>>>>import java.util.Vector;
>>>>import org.apache.log4j.Logger;
>>>>import org.apache.xindice.client.xmldb.services.CollectionManager;
>>>>import org.apache.xindice.xml.dom.DOMParser;
>>>>import org.test.commands.DatabaseCommand;
>>>>import org.w3c.dom.Node;
>>>>
>>>>import org.xmldb.api.base.*;
>>>>import org.xmldb.api.modules.*;
>>>>import org.xmldb.api.*;
>>>>
>>>>
>>>>/**
>>>> *
>>>> * @author stoddarn
>>>> */
>>>>public class XindiceGateway
>>>>{
>>>> // Log4j Logger
>>>> static Logger m_logger = Logger.getLogger(XindiceGateway.class);
>>>>
>>>> // Static mutex on the database
>>>> static String m_databaseMutex = new String ("mutex");
>>>>
>>>> private boolean m_databaseRegistered = false;
>>>>
>>>> // Static XINDICE data
>>>> private static String XINDICE_DB_DRIVER = new
>>>>String("org.apache.xindice.client.xmldb.DatabaseImpl");
>>>>
>>>> // The root to the database
>>>> private static String XINDICE_DB_ROOT = new
>>>>String("xmldb:xindice://localhost:8080/db/"); // LINUX Penguin
>>>>
>>>> // Xindice API version
>>>> private static String XINDICE_API_VERSION = new String ("1.0");
>>>>
>>>> // Xindice file setup
>>>> private static String XINDICE_COMPRESSION_ENABLED = new String
>>>>("true");
>>>> private static String XINDICE_FILTER_CLASS = new
>>>>String("org.apache.xindice.core.filer.BTreeFiler");
>>>>
>>>>
>>>>/** Make sure the database is registered */
>>>>protected void EnableDatabase ()
>>>> throws ClassNotFoundException, InstantiationException,
>>>>IllegalAccessException,
>>>> XMLDBException
>>>>{
>>>> // If the database isn't already registered
>>>> if (! m_databaseRegistered)
>>>> {
>>>> m_databaseRegistered = true;
>>>>
>>>> m_logger.info("Enabling Xindice Database");
>>>>
>>>> Class c = Class.forName(XINDICE_DB_DRIVER);
>>>>
>>>> Database database = (Database) c.newInstance();
>>>> DatabaseManager.registerDatabase(database);
>>>>
>>>> // Update the CodeReview paths
>>>> boolean baseCollectionFound = false;
>>>> boolean projectListingsCollectionFound = false;
>>>> boolean projectListingsFileFound = false;
>>>> boolean projectsCollectionFound = false;
>>>>
>>>> // Check for "test"
>>>> String [] baseCollection = ListCollections("");
>>>> // Loop to see if there is a match
>>>> for (int bcItr = 0; !baseCollectionFound && bcItr <
>>>>baseCollection.length; bcItr++)
>>>> {
>>>>
>>>> if (baseCollection[bcItr].equals("test"))
>>>> {
>>>> baseCollectionFound = true;
>>>> }
>>>> }
>>>> // If the baseCollection is missing add it
>>>> if (!baseCollectionFound)
>>>> {
>>>> m_logger.info("Create codereview collection required");
>>>> CreateCollection("", "test");
>>>> }
>>>>
>>>> // Check for "projectlistings" and "projects"
>>>> String [] testCollection = ListCollections("test");
>>>> // Loop to see if there is a match for project listings and
>>>> projects
>>>> for (int crItr = 0; (!projectListingsCollectionFound ||
>>>>!projectsCollectionFound) && crItr < testCollection.length; crItr++)
>>>> {
>>>> if (testCollection[crItr].equals("projectlistings"))
>>>> {
>>>> projectListingsCollectionFound = true;
>>>> }
>>>> else if (testCollection[crItr].equals("projects"))
>>>> {
>>>> projectsCollectionFound = true;
>>>> }
>>>> }
>>>> // If the baseCollection is missing add it
>>>> if (!projectListingsCollectionFound)
>>>> {
>>>> m_logger.info("Create projectlistings collection required");
>>>> CreateCollection("test", "projectlistings");
>>>> }
>>>>
>>>> // If the baseCollection is missing add it
>>>> if (!projectsCollectionFound)
>>>> {
>>>> m_logger.info("Create projects collection required");
>>>> CreateCollection("test", "projects");
>>>> }
>>>> }
>>>>}
>>>>
>>>>
>>>>/** Add documents to a collection */
>>>>public void AddDocument(String collectionName, String documentName,
>>>>String
>>>>documentXML)
>>>>{
>>>> Collection col = null;
>>>>
>>>> String[] documents = null;
>>>> synchronized (m_databaseMutex)
>>>> {
>>>> try {
>>>> EnableDatabase();
>>>>
>>>> // Get the collection
>>>> col = DatabaseManager.getCollection(XINDICE_DB_ROOT +
>>>>collectionName);
>>>>
>>>> XMLResource document = (XMLResource)
>>>>col.createResource(documentName, "XMLResource");
>>>> document.setContent(documentXML);
>>>> col.storeResource(document);
>>>> }
>>>> catch (XMLDBException e) {
>>>> m_logger.error("AddDocument: XML:DB Exception occured: " +
>>>>e.getMessage());
>>>> }
>>>> catch (Exception e) {
>>>> m_logger.error("AddDocument: Other Exception occured");
>>>> }
>>>> finally
>>>> {
>>>> // If the colletion was created, then make sure we close it
>>>> if (col != null)
>>>> {
>>>> try
>>>> {
>>>> // Close the collection
>>>> col.close();
>>>> }
>>>> catch (Exception e)
>>>> {
>>>> // Catch any issues with closing the exception.
>>>> m_logger.error("Unable to close collection. " +
>>>>e.getMessage());
>>>> }
>>>> }
>>>> }
>>>> }
>>>>}
>>>>
>>>>
>>>>/** Read a document */
>>>>public String ReadDocument(String collectionName, String documentName)
>>>>{
>>>> Collection col = null;
>>>> String returnString = null;
>>>>
>>>> synchronized (m_databaseMutex)
>>>> {
>>>> try {
>>>> EnableDatabase();
>>>>
>>>> col = DatabaseManager.getCollection(XINDICE_DB_ROOT +
>>>>collectionName);
>>>>
>>>> XMLResource document = (XMLResource)
>>>>col.getResource(documentName);
>>>>
>>>> returnString = (String)document.getContent();
>>>> }
>>>> catch (XMLDBException e) {
>>>> m_logger.error("ReadDocument (" + collectionName + "/" +
>>>>documentName + "): " + e.getMessage());
>>>> }
>>>> catch (Exception e) {
>>>> m_logger.error("ReadDocument (" + collectionName + "/" +
>>>>documentName + "): " + e.getMessage());
>>>> }
>>>> finally
>>>> {
>>>> // If the colletion was created, then make sure we close it
>>>> if (col != null)
>>>> {
>>>> try
>>>> {
>>>> // Close the collection
>>>> col.close();
>>>> }
>>>> catch (Exception e)
>>>> {
>>>> // Catch any issues with closing the exception.
>>>> m_logger.error("Unable to close collection. " +
>>>>e.getMessage());
>>>> }
>>>> }
>>>> }
>>>> }
>>>>
>>>> return (returnString);
>>>> }
>>>>
>>>>
>>>>
>>>> /** Creates a new instance of XindiceGateway */
>>>> public XindiceGateway()
>>>> {
>>>> }
>>>>
>>>>}
>>>>
>>>
>>
>
