GemFire Enterprise DataBrowser User`s Manual
Contents
1. 24x7 Emergency Technical Support GemStone offers at an additional charge 24x7 emergency technical support This support entitles customers to contact us 24 hours a day 7 days a week 365 days a year if they encounter problems that cause their production application to go down or that have the potential to bring their production application down Contact your GemStone account manager for more details GemFire Developer Corner More information about GemFire products can be obtained by visiting the GemFire Developer Corner at http developer gemstone com You can find useful information such as e Product FAQs http developer gemstone com display gfedev GemFire Product FAQs e Hands on examples and code samples http developer gemstone com display gfedev Get Hands On with GemFire e GemFire technology use cases and design patterns http developer gemstone com display gfedev Using GemFire in Your Organization Training and Consulting Consulting and training for all GemStone products are available through GemStone s Professional Services organization e Training courses are offered periodically at GemStone s offices in Beaverton Oregon or you can arrange for onsite training at your desired location e Customized consulting services can help you make the best use of GemStone products in your business environment Contact your GemStone account representative for more details or to obtain consulting services GemStone Sy2. the log file is rolled over and a new log file may be created and the oldest one may be deleted e Number of rolled over log files to store When log files reach their size threshold logging rolls over to a new file This value specifies the maximum number of rolled log files to keep Then the number of rolled over log files is reached the oldest one is deleted Chapter 7 How DataBrowser Works DataBrowser interacts with GemFire Enterprise both as a GemFire client and as an RMI client of the AdminA gent Discovery As an RMI client it uses JMX to get information about the data regions in the distributed system and the servers on which they are located This information is displayed on the left side of the Main Window where the data regions are displayed in a hierarchical tree with child data regions displayed as sub nodes of their parent data region The lower pane on the left shows the list of cache servers on which the region selected in the upper list is located Query Execution A region must be selected to execute a query specified in the Query Pane You may also select a cache server on which the query will be executed If no cache server is selected then the first one listed in the Member Pane is chosen for the execution of the query The DataBrowser does not prevent execution of complex queries such as those creating a join across regions on a cache server that does not contain GemStone Systems Inc y 1 503 533 3000 y www
3. a GemFire Enterprise distributed system including Cache Servers and AdminA gents Technical Support GemStone provides several sources for product information and support The GemFire Enterprise Developer s Guide the GemFire Enterprise System Administrator s Guide and the GemFire Enterprise online Java API provide extensive documentation and should always be your first source of information GemStone Technical Support engineers will refer you to these documents when applicable However you may need to contact Technical Support for the following reasons e Your technical question is not answered in the documentation e You receive an error message that directs you to contact GemStone Technical Support e You want to report a bug e You want to submit a feature request Questions concerning product availability pricing or future features should be directed to your GemStone account manager Questions about licenses should be email to keyfiles gemstone com Preserving Artifacts for Technical Support If you have a hung VM and you do not have to kill it leave it while you contact Technical Support If you cannot leave the VM running and it is running under Unix signal it twice with this command letting five to ten seconds pass between the two signals kill QUIT pid This will send the VM s stack dumps into the log file for inspection For Windows systems call Technical Support for assistance in obtaining stack dumps Don t
4. distributed system specify security properties execute queries and export results to an XML file Menu In addition to the functionality accessible through the toolbar the menu allows you to set your preferences for the application via the Options item This displays the Preferences dialog that allows you to set your preferences for connections made to distributed systems query execution security preferences and other miscellaneous options such as additional classpath components for the application location of the log file logging level among others Region List This shows the regions that are present in the distributed system This information is refreshed according to the interval specified in the application preferences The list is displayed as a tree where the child nodes represent child regions of a GemFire regions Member List When a region is selected the GemFire members on which the region occurs are displayed in this list Right clicking on an item in this list of members displays a context menu that allows you to execute a ContinuousQuery CQ on the member for the selected region Query Pane This pane is a multi line editor that allows you to enter OQL queries for execution If a line is selected the text on the line is the query string used for execution Else if no line is selected the text of the last line is automatically used as the query string for execution Results Pane The results pane displays each re
5. gemstone com 16 the regions In this case an error message sent by query engine on the server is displayed The DataBrowser creates a connection pool to a cache server the first time a query is executed on it This pool uses the default settings specified by GemFire This connection pool is maintained until the DataBrowser application is shut down or the DataBrowser received a notification that the member is no longer present in the distributed system either because it has left or crashed Though only a single ad hoc query can be executed at a time multiple CQs may be executed simultaneously If these queries are being executed on the same cache server then multiple connections to the cache server are automatically created The default settings of connection pools are used by the DataBrowser These allow it to start with a single connection and allow for unbounded number of connections in pool The DataBrowser maintains a connection pool per cache server with a single connection in the pool There is no fail over to another cache server in case a connection is lost If a query is being currently executed on a cache server that leaves an error is returned in the UI Security DataBrowser supports the GemFire security mechanism It attempts to execute a query without presenting any security credentials to the cache server If the distributed system is security enabled then the DataBrowser received a security exception It handles this by presen
6. names mentioned herein may be trademarks or registered trademarks of their respective owners Trademark specifications are subject to change without notice All terms mentioned in this documentation that are known to be trademarks or service marks have been appropriately capitalized to the best of our knowledge however GemStone cannot attest to the accuracy of all trademark information Use of a term in this documentation should not be regarded as affecting the validity of any trademark or service mark GemStone Systems Inc 1260 NW Waterhouse Avenue Suite 200 Beaverton OR 97006 GemStone Systems Inc y 1 503 533 3000 y www gemstone com Table of Contents GemFire Enterprise DataBrowser User s Manuaal cccsscsssccssccsstsssenssecesscceessesesesencesaccssssesenessencesensnes 1 INTELLECTUAL PROPERTY OWNERSHIP ssessessesessssssssssssessserressssressssrressssssrererrrereeeereeess 2 COPYRIGHTS arare eenen e EEEE REE E teva re ensue EREE eave eee mene 2 FEA TEIN S E E E E E E T 3 TRADEMARKS rororo enr E E E E E A 3 Eh sce EE E E E S E E E EE 6 About This User Manualisessneni i e E ina E A ET 6 Other RST MCES wos ccaacnsassnnagianenatelacenncenteseacacsnaenciageteaeiastaniniigaiiautaaiagenniteaee aaa 6 Technical SU OF sn tise oc esse aeres eeu EEE EE ESEA EO NS POTETE EEOSE EENET VEETEE ENEE EEEE 6 Preserving Artifacts for Technical Support ssesesesessseseessesseserssesssesstssrssresessesseesssressseresssreesssree
7. GemFire Enterprise DataBrowser User s Manual Version 1 1 August 2009 Copyright 2009 GemStone Systems Inc Send comments on this guide to docs gemstone com GemStone Systems Inc y 1 503 533 3000 y www gemstone com INTELLECTUAL PROPERTY OWNERSHIP This documentation is furnished for informational use only and is subject to change without notice GemStone Systems Inc assumes no responsibility or liability for any errors or inaccuracies that may appear in this documentation This documentation or any part of it may not be reproduced displayed photocopied transmitted or otherwise copied in any form or by any means now known or later developed such as electronic optical or mechanical means without express written authorization from GemStone Systems Inc Warning This computer program and its documentation are protected by copyright law and international treaties Any unauthorized copying or distribution of this program its documentation or any portion of it may result in severe civil and criminal penalties and will be prosecuted under the maximum extent possible under the law The software installed in accordance with this documentation is copyrighted and licensed by GemStone Systems Inc under separate license agreement This software may only be used pursuant to the terms and conditions of such license agreement Any other use may be a violation of law Use duplication or disclosure by the Government is subject to res
8. delete any files until you call Technical Support and find out exactly what data may be useful to Support or Engineering Save all the artifacts including e Log files Send the full log to Technical Support not just the stack Even at the default logging GemStone Systems Inc vy 1 503 533 3000 v www gemstone com 6 level the log contains data that may be important such as the operating system and license e Core files e For Linux you can use gdb to extract a stack from a core file Call Technical Support if you need assistance e Crash dumps e For Windows save the Dr Watson output Contacting Technical Support When contacting GemStone Technical Support please be prepared to provide the following information e Your name company name and GemFire license number e The GemFire product and version you are using e The hardware platform and operating system you are using e A description of the problem or request e Exact error messages received if any e Any artifacts in the preceding list Your GemStone support agreement may identify specific individuals who are responsible for submitting all support requests to GemStone If so please submit your information through those individuals All responses will be sent to authorized contacts only For non emergency requests you should contact Technical Support by web form or E mail You will receive confirmation of your request and a request assignment number for tracking Re
9. e following steps start the DataBrowser e Execute agent start in the GemFire product bin directory to start the AdminA gent in the GemFire distributed system Refer to Using JMX to Administer GemFire in the GemFire Enterprise System Administrator s Guide to start the AdminAgent with non default options By default the AdminA gent listens on port 1099 for RMI clients e Set the GEMFIRE environment variable to point to the product directory containing the same gemfire jar used by the AdminA gent e Add any application classes in the classpath These can also be set in the DataBrowser s preferences e Execute databrowser bat on Microsoft Windows or the databrowser shell script on Linux to start DataBrowser The DataBrowser connects to the AdminAgent to discover the data regions and cache servers in a GemFire distributed system and display them in the user interface Queries must be executed by selecting data region and optionally a member on which the region is located If no member is selected the DataBrowser automatically selects the first member cache server The DataBrowser does not guard against executing complex queries e g those that do a join across regions on a cache server that does not have all the regions specified in the query GemStone Systems Inc y 1 503 533 3000 y www gemstone com 11 Chapter 4 Connecting to a GemFire Distributed System Once the DataBrowser is running you can connect to a GemFire distributed
10. eptions returned by the member Figure 5 2 ContinuousQuery Window Export Results The contents of the Results pane in the Main Window can be exported to an XML file An associated XSD is also created This allows you to capture the results and manipulate it and examine it further using other tools at a later point in time Explore Functionality The Results Pane in both the Main window and the CQ window has a context menu applicable to a single table row that allows you to drill down into the record in the result set This is particularly useful to examine a record that contains fields that are collections or composite types To view custom application types you must include the jars in the CLASSPATH or specify their location in the DataBrowser preferences GemStone Systems Inc y 1 503 533 3000 y www gemstone com 14 Chapter 6 Preferences User specified preferences can be set in the Preferences dialog This dialog is accessible through the Options gt Preferences menu The preferences are categorized into 4 types 1 Connection 2 Query 3 Security 4 Miscellaneous Connection This allows you to specify four settings Number of entries to keep in history list of AdminAgents to which you connected e The timeout in milliseconds to be used on connection attempts to the AdminA gent Query This allows you to specify the following e Whether the DataBrowser should automatically append a LIMIT clause if not a
11. erprise and the GemStone logo are trademarks or registered trademarks of GemStone Systems Inc in the United States and other countries trademark application pending for GemFire UNIX is a registered trademark of The Open Group in the U S and other countries Linux is a registered trademark of Linus Torvalds Red Hat and all Red Hat based trademarks and logos are trademarks or registered trademarks of Red Hat Inc in the United States and other countries SUSE is a registered trademark of SUSE AG Sun Sun Microsystems Solaris Forte Java Java Runtime Edition JRE and other Java related marks and logos are trademarks or registered trademarks of Sun Microsystems Inc All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International Inc in the United States and other countries Products bearing SPARC trademarks are based upon an architecture developed by Sun Microsystems Inc Intel and Pentium are registered trademarks of Intel Corporation in the United States and other countries Microsoft Windows and Visual C are registered trademarks of Microsoft Corporation in the United States and other countries Exolab is a registered trademark of ExoLab Group IBM AIX and developerWorks are registered trademarks of IBM Corporation W3C is a registered trademark of the World Wide Web Consortium GemStone Systems Inc y 1 503 533 3000 v www gemstone com 3 Other company or product
12. lready present in a query and the limit on the items in the result set This can help avoid out of memory situations in cases where the heap size of the VM used by the DataBrowser is not sufficient when the query results in extremely large data volumes being returned This preference setting does not apply to CQs Security These preferences allow you to specify a jar that implements the GemFire Enterprise security plug in interface and define properties that are supplied when the interface is invoked when executing queries on a cache server The hidden checkbox toggles the masked state of the values provided Optionally you can import properties from a property file by clicking on the Import button The Security group box that contains the UI controls specific to security are also displayed in a pop up dialog that is displayed when you click on the Specify Security button on the toolbar in the Main Window GemStone Systems Inc y 1 503 533 3000 y www gemstone com 15 Figure 6 1 Miscellaneous This allows you to specify e Logging settings e The rate at which the DataBrowser updates its view of regions and members in the distributed system e Add custom application jars to the DataBrowser s classpath The logging settings are applied when you restart DataBrowser These settings allow you specify the following e Location of the log files e The maximum size of a log file When a log file reaches this threshold
13. plies will be sent by E mail whenever possible regardless of how they were received GemStone Support Website http techsupport gemstone com This is the preferred method of contact The Submit A Request link toward the top left of the home page please use this to submit help requests This form requires an email address for registration Registration is free of charge To register click on the Sign up link at the top left corner of the home page and complete the Registration Form Alternatively you can submit your request along with your email and you will receive a verification email with a URL where you can create your account E mail techsupport gemstone com Please do not send files larger than 100K for example core dumps to this address A special address for large files will be provided as appropriate Telephone 800 243 4772 or 503 533 3503 We recommend that you call only for more serious requests that require immediate evaluation such as a production system that is non operational Emergency requests are handled by the first available engineer If you are reporting an emergency and you receive a recorded message do not use the voice mail option Transfer your call to the operator who will take a message and immediately contact an engineer GemStone Systems Inc y 1 503 533 3000 y www gemstone com Non emergency requests received by telephone are placed in the normal support queue for evaluation and response
14. port Results ssrcecse a era ey rey EEE Ea AE EA EEA 16 Explore FUNC TIAL Ys sccsanesacicesireiansasonnaaetewar eatae E iara ear eera EEPE REER E ERE Ear R EAN EEEa EES E e EnEn 16 Chapter 6 Preferentes Mer eee nee ee e A NE eee A ore ere eer A O I 17 eDane Te a E E E E E E A S 17 QUT Ye iison na E E E E E E NE S NOE EE A EE A E E E 17 SULIT AEE EE E E E E EEE EA 17 Mase UancoUS een Or eo Ee TE a N a AEE E eee ee 18 Chapter 7 How DataBrowser WOKS dcwssciaevensiswedaszeriexsivesinantanmendaweaaesned ahgetaxv urienedueweniunseesludatdeieediuvauar eases 19 DISCOV El Yinemi EA A E E E A A EE 19 Oier y Exec oneee E E E E ee ein 19 DUIS E E E E E E E EE E eee 19 Appendix A DataBrowser Product Tree scissccises ivicossabessnsnddoceviadien dusswatnnens ies scias devas sass etearanan accumsan 21 GemStone Systems Inc y 1 503 533 3000 vy www gemstone com 5 Preface About This User Manual This user manual describes the GemStone GemFire Enterprise DataBrowser tool which is used to execute ad hoc queries on data regions on cache servers in a GemFire Enterprise distributed system The document assumes familiarity with basic Java terminology and programming practices Other References The GemFire Enterprise Developer s Guide describes the major services and functions in GemFire Enterprise including the query facilities provided in GemFire Enterprise The GemFire Enterprise System Administrator s Guide describes how to configure and deploy
15. rary is licensed under the Lesser GNU Public License which is included with the distribution in a file called LICENSE txt PrimeFinder and HashFunctions classes in Trove Copyright 1999 CERN European Organization for Nuclear Research JavaGroups copyright 1999 2004 Free Software Foundation Inc GNU Trove copyright 2001 2004 Eric D Friedman The PrimeFinder and HashFunctions classes in Trove are copyright 1999 CERN European Organization for Nuclear Research Copyright 1991 1999 Free Software Foundation Inc 59 Temple Place Suite 330 Boston MA 02111 1307 USA GemStone Systems Inc y 1 503 533 3000 y www gemstone com 2 MX4J project http mx4j sourceforge net Copyright 2001 2004 by the MX4J contributors All rights reserved Commons Modeler Copyright 2004 Commons Modeler All rights reserved JDBM Copyright 2000 Cees de Groot All Rights Reserved Contributions are Copyright 2000 by their associated contributors Copyright C 2006 Hitachi Ltd All Rights Reserved Copyright 1994 Hewlett Packard Company Copyright 1996 97 Silicon Graphics Computer Systems Inc Copyright 1997 Moscow Center for SPARC Technology Copyright 1998 2003 Daniel Veillard All rights reserved Jgroups 2001 2002 www jgroups org Antlr 2005 Terence Parr All rights reserved PATENTS GemFire is protected by U S patent 6 360 219 Additional patents pending TRADEMARKS GemStone GemFire GemFire Ent
16. rise 6 0 is required on the distributed system on which the DataBrowser will execute queries A machine with Intel 2 GHz Pentium 4 or equivalent and 2 GB RAM is the minimum recommended hardware You may also consider explicitly setting the JVM heap size in the DataBrowser startup scripts to a value suitable for the result sizes that would be returned from your distributed system DataBrowser is distributed as a ZIP archive Extract the contents of the ZIP archive to a temporary location and then execute the jar to install the product You will be prompted through a sequence of steps including selection of the file system location in which the software is installed You can uninstall DataBrowser by simply deleting the file system tree in which the archive was extracted See Appendix A later in this document for a description of the product tree Licensing DataBrowser is licensed as a package along with GemStone GemFire Enterprise You will require a GemFire license file to use DataBrowser The AdminAgent used by the DataBrowser to connect to the distributed system and the ability to connect to a distributed system requires a GemFire license For more information about GemFire licenses see the GemFire Enterprise documentation For licenses contact keyfiles gemstone com GemStone Systems Inc y 1 503 533 3000 y www gemstone com 10 Chapter 3 Running DataBrowser After installing the DataBrowser and a supported JRE use th
17. sse 6 Contacting Technical Support ssssseseeseessesetseessesetssesssesstsstsstessessesstessesstrsesstssttsrtessseresssreesssreessene 7 24x7 Emerg ncy Technical Supportere isisisi seorsa ia iii ii 8 GemFir Developer Corn tiniee e EE E E E E AEE RR EERE 8 Training and Con SUIT CIMNEcs satvavnnassscoeiedencoenseudsiceyncusooa gwen tenses a vensvade eenvensesansen Ionsennen hinenteaucessuteaapeaseanaaions 8 Chapter 1 Introduction to GemFire Enterprise DataBrowsSet ccccccccceseceeseeenseeseeeeseeeeeeeeeesseaeeeenaes 9 Chapter 2 TNS AAU OI a sseaccessicnicnesese a xccnnlccsnleinnccaawacrawacias vende ved E E E E 10 METOE VAN secs E Ge usb uhier onc zn egies estaba eds AS 10 Chapter 3 Running D Da LOW SC Be cscs scssteactetecin nas ivep take diane erina tress es dae ancaa hele Monstabua desma ents 11 Chapter 4 Connecting to a GemFire Distributed System s sssssssssseeseeessesreserssresetssresesrrsseesessesseesse 12 Chapter 5 Tout of th Data BrOW set ivcsssccausesnesssatinsnanswveresSeesdenassleannyalleddinmrusesincsasisetvaysiaedvodenedsaiuntoasandsabess 13 M in WINdOW iesind eea aeaa EE EE a dane GR ae SAEN EEEE E AESA Ga 13 TOOlGAT aee eaa ea E E A A ee e 14 WA LGE A E E E E E E E E EE A 14 Region Distenn e E EEEE Ea E EE E das EE EE E a AEE EREE ER 14 AA eaa aloe 15 A E E E A A E 14 Query Palee n E E cies acne E E A E S 14 Results Pane sieren E E aE 14 Continous QUE Yessenia ei e E T E Ea EEEa EEEE EEE E EE 14 Ex
18. stems Inc y 1 503 533 3000 v www gemstone com 8 Chapter 1 Introduction to GemFire Enterprise DataBrowser As implied by its name the DataBrowser allows developers and administrators to connect to a GemFire Enterprise distributed system to browse data using ad hoc OQL queries DataBrowser is designed to work with GemFire Enterprise 6 0 or higher The DataBrowser provides the following features e Execute ad hoc queries on any data region on any cache node in the distributed system and display the results in a tabular format with the ability to drill to down into complex nested objects e The maximum number of rows returned by any query can be configured to prevent excessive resource utilization on the server e Multiple Continuous Queries can also be simultaneously executed on one or more cache servers in the distributed system The results are continuously updated in a tabular window e Security credentials can be provided when connecting to a distributed system through a plug in mechanism The GemStone tools development team welcomes feedback to improve the DataBrowser Please report any comments bugs and suggestions at http techsupport gemstone com GemStone Systems Inc y 1 503 533 3000 v www gemstone com 9 Chapter 2 Installation GemFire Enterprise DataBrowser is designed to run on Microsoft Windows and Red Hat Linux DataBrowser requires the Java Runtime Environment JRE 1 5 or higher to run GemFire Enterp
19. sults item in the table in the pane Multiple tabs may be displayed under the results pane each tab representing a specific Java type returned in the results GemStone Systems Inc y 1 503 533 3000 y www gemstone com 13 Continuous Query A ContinuousQuery is syntactically identical to a regular GemFire OQL query except that once its is registered on the member the member continues sending result items that match the query specifications as changes happen in the region on the member Unlike the Main Window the Continuous Query window has only a single item in its toolbar that allows you to stop the execution of the CQ It also shows some additional information about the query as it is being executed on the member This includes the total number of events that have occurred on the member since the CQ was registered including inserts updates and deleted Each Results tab in a ContinuousQuery window has a drop down list that contains the field columns in the table names of the items in the results This is useful in filtering the results Selecting a field in this list allows you to filter the results displayed in the table by having it display only unique values for that field For example if one of the fields in the query results is a zip code applying a filter on that field will result in the table displaying only a single row for each unique zip code returned by the query There is also an embedded pane that shows any messages or exc
20. system by clicking on the toolbar item labeled Connect to GemFire or selecting the File menu item of the same name This displays the Connect to GemFire distributed system popup dialog Figure 4 1 Connect To GemFire Distributed System The host and port fields refer to that of the RMI enabled AdminA gent in the GemFire distributed system to which you want to connect These host port combinations are saved by the DataBrowser to allow you to easily select a previous AdminA gent from the drop down lists in this dialog You can set the number of entries in this list in the Connection Preferences dialog Once connected to the distributed system the DataBrowser fetches the GemFire regions present in the distributed system as well as the members on which they are located RMI requires the host name to not contain certain reserved characters such as and For a complete list of reserved characters consult RFC 952 If your host names contain non compliant characters we recommend using the IP address instead GemStone Systems Inc y 1 503 533 3000 y www gemstone com 12 Chapter 5 Tour of the DataBrowser Main Window The Main Window is displayed once the application has started All of DataBrowser s functionality is available through this window Figure 5 1 Main Window Toolbar The toolbar is where you can access most of the functionality offered by the DataBrowser including the ability to connect to and disconnect from a
21. ting a popup dialog populated with the name of the security plugin jar and properties specified in the Preferences dialog The user may modify these if needed or simply click the OK button to have the DataBrowser use the default jar and the properties Currently DataBrowser does not provide mechanism that filters the list of regions and cache servers displayed based on the security credentials See the GemFire Enterprise System Administrator s Guide for details on GemFire security GemStone Systems Inc y 1 503 533 3000 y www gemstone com 17 Figure 7 1 Connection made by the DataBrowser to the GemFire Distributed System Refer to the section on Pool API in the GemFire Enterprise Developer s Guide for further details on connection pools GemStone Systems Inc y 1 503 533 3000 y www gemstone com 18 Appendix A DataBrowser Product Tree Directory Contents bin This contains the DataBrowser launch scripts databrowser bat and databrowser docs This user manual and any images it displays lib This contains the jars and binary libraries needed to run DataBrowser GemStone Systems Inc y 1 503 533 3000 y www gemstone com 19
22. trictions set forth in the Commercial Software Restricted Rights clause at 52 227 19 of the Federal Acquisitions Regulations 48 CFR 52 227 19 except that the government agency shall not have the right to disclose this software to support service contractors or their subcontractors without the prior written consent of GemStone Systems Inc This software is provided by GemStone Systems Inc and contributors as is and any expressed or implied warranties including but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed In no event shall GemStone Systems Inc or any contributors be liable for any direct indirect incidental special exemplary or consequential damages including but not limited to procurement of substitute goods or services loss of use data or profits or business interruption however caused and on any theory of liability whether in contract strict liability or tort including negligence or otherwise arising in any way out of the use of this software even if advised of the possibility of such damage COPYRIGHTS This software product its documentation and its user interface Copyright 1997 2009 GemStone Systems Inc All Rights Reserved by GemStone Systems Inc Java Software technologies Copyright 1994 2000 Sun Microsystems Inc All rights reserved Trove Log4J Copyright 1999 The Apache Software Foundation All rights reserved The Trove lib
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