Examples of org.exist.storage.BrokerPool

org.exist.storage.BrokerPool
This class controls all available instances of the database. Use it to configure, start and stop database instances. You may have multiple instances defined, each using its own configuration. To define multiple instances, pass an identification string to {@link #configure(String,int,int,Configuration)}and use {@link #getInstance(String)} to retrieve an instance. @author Wolfgang Meier @author Pierrick Brihaye

  class GetRelease implements Runnable {


    @Override
    public void run() {
          try {
            BrokerPool db = BrokerPool.getInstance();
        
            Subject subject = db.getSecurityManager().getSystemSubject();
            
            DBBroker broker = null;
        try {
          broker = db.get(subject);
              System.out.println("get broker "+Thread.currentThread());
          
          //do something
          Thread.sleep(rd.nextInt(5000));
          
          try {
            assertEquals(broker, db.get(null));
  
            //do something
            Thread.sleep(rd.nextInt(5000));
          } finally {
            db.release(broker);
          }


        } finally {
              System.out.println("releasing broker "+Thread.currentThread());
          db.release(broker);
        }
        
      } catch (Throwable e) {
        ex = e;
      }

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        return (XPathQueryService) root.getService( "XQueryService", "1.0" );
    }


    private static void createTestCollections() throws Exception {


        BrokerPool pool = BrokerPool.getInstance();
        DBBroker broker = null;
        TransactionManager transact = null;
        Txn txn = null;
        try {
            Subject admin = pool.getSecurityManager().authenticate(ADMIN_UID, ADMIN_PWD);


            broker = pool.get(admin);


            transact = pool.getTransactionManager();
            txn = transact.beginTransaction();


            /** create nessecary collections if they dont exist */
            org.exist.collections.Collection testCollection = broker.getOrCreateCollection(txn, XmldbURI.create(VALIDATION_HOME_COLLECTION_URI));
            testCollection.getPermissions().setOwner(GUEST_UID);
            broker.saveCollection(txn, testCollection);


            org.exist.collections.Collection col = broker.getOrCreateCollection(txn, XmldbURI.create(VALIDATION_HOME_COLLECTION_URI + "/" + TestTools.VALIDATION_DTD_COLLECTION));
            col.getPermissions().setOwner(GUEST_UID);
            broker.saveCollection(txn, col);


            col = broker.getOrCreateCollection(txn, XmldbURI.create(VALIDATION_HOME_COLLECTION_URI + "/" + TestTools.VALIDATION_XSD_COLLECTION));
            col.getPermissions().setOwner(GUEST_UID);
            broker.saveCollection(txn, col);


            col = broker.getOrCreateCollection(txn, XmldbURI.create(VALIDATION_HOME_COLLECTION_URI + "/" + TestTools.VALIDATION_TMP_COLLECTION));
            col.getPermissions().setOwner(GUEST_UID);
            broker.saveCollection(txn, col);


            transact.commit(txn);


        } catch (Exception e) {
            if(transact != null && txn != null) {
                transact.abort(txn);
            }
            throw e;
        } finally {
            if(broker != null) {
                pool.release(broker);
            }
        }
    }

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        }
    }


    private static void createTestDocuments() throws Exception {


        BrokerPool pool = BrokerPool.getInstance();
        DBBroker broker = null;
        TransactionManager transact = null;
        Txn txn = null;
        try {


            broker = pool.get(pool.getSecurityManager().getGuestSubject());


            transact = pool.getTransactionManager();
            txn = transact.beginTransaction();


            /** create necessary documents  */


            //hamlet
            String sb = new String(TestTools.getHamlet());
            sb = sb.replaceAll("\\Q<!\\E.*DOCTYPE.*\\Q-->\\E",
                "<!DOCTYPE PLAY PUBLIC \"-//PLAY//EN\" \"play.dtd\">" );


            org.exist.collections.Collection tmpCol = broker.getCollection(XmldbURI.create(VALIDATION_HOME_COLLECTION_URI + "/" + TestTools.VALIDATION_TMP_COLLECTION));
            storeDocument(broker, txn, tmpCol, "hamlet_valid.xml", sb);
            broker.saveCollection(txn, tmpCol);


            config.setProperty(XMLReaderObjectFactory.PROPERTY_VALIDATION_MODE, "no");


            org.exist.collections.Collection dtdCol = broker.getCollection(XmldbURI.create(VALIDATION_HOME_COLLECTION_URI + "/" + TestTools.VALIDATION_DTD_COLLECTION));
            storeTextDocument(broker, txn, dtdCol, "hamlet.dtd", new String(TestTools.loadSample("validation/dtd/hamlet.dtd")));
            storeDocument(broker, txn, dtdCol, "catalog.xml", new String(TestTools.loadSample("validation/dtd/catalog.xml")));
            broker.saveCollection(txn, dtdCol);


            org.exist.collections.Collection homeCol = broker.getCollection(XmldbURI.create(VALIDATION_HOME_COLLECTION_URI));
            storeDocument(broker, txn, homeCol, "hamlet_valid.xml", new String(TestTools.loadSample("validation/dtd/hamlet_valid.xml")));
            storeDocument(broker, txn, homeCol, "hamlet_invalid.xml", new String(TestTools.loadSample("validation/dtd/hamlet_invalid.xml")));
            broker.saveCollection(txn, homeCol);


            config.setProperty(XMLReaderObjectFactory.PROPERTY_VALIDATION_MODE, "yes");


            transact.commit(txn);
        } catch (Exception e) {
            if(transact != null && txn != null) {
                transact.abort(txn);
            }
            throw e;
        } finally {
            if(broker != null) {
                pool.release(broker);
            }
        }
    }

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        collection.addBinaryResource(txn, broker, docUri, data.getBytes(), "text/plain");
    }


    private static void removeTestCollections() throws Exception {


        BrokerPool pool = BrokerPool.getInstance();
        DBBroker broker = null;
        TransactionManager transact = null;
        Txn txn = null;
        try {
            Subject admin = pool.getSecurityManager().authenticate(ADMIN_UID, ADMIN_PWD);


            broker = pool.get(admin);


            transact = pool.getTransactionManager();
            txn = transact.beginTransaction();


            org.exist.collections.Collection testCollection = broker.getOrCreateCollection(txn, XmldbURI.create(VALIDATION_HOME_COLLECTION_URI));
            broker.removeCollection(txn, testCollection);


            transact.commit(txn);
        } catch (Exception e) {
            if(transact != null && txn != null) {
                transact.abort(txn);
            }
            throw e;
        } finally {
            if(broker != null) {
                pool.release(broker);
            }
        }
    }

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                    "    <?echo \"A processing instruction\"?>\n" +
                    "    <para>Another <b>paragraph</b>.</para>\n" +
                    "</test>";


    public void testNodeStorage() throws Exception {
        BrokerPool pool = BrokerPool.getInstance();
        DBBroker broker = null;
        try {
            broker = pool.get(pool.getSecurityManager().getSystemSubject());
            XQuery xquery = broker.getXQueryService();
            assertNotNull(xquery);
            // test element ids
            Sequence seq = xquery.execute("doc('/db/test/test_string.xml')/test/para",
                    null, AccessContext.TEST);
            assertEquals(3, seq.getItemCount());
            NodeProxy comment = (NodeProxy) seq.itemAt(0);
            assertEquals(comment.getNodeId().toString(), "1.1");
            comment = (NodeProxy) seq.itemAt(1);
            assertEquals(comment.getNodeId().toString(), "1.3");
            comment = (NodeProxy) seq.itemAt(2);
            assertEquals(comment.getNodeId().toString(), "1.5");


            seq = xquery.execute("doc('/db/test/test_string.xml')/test//a",
                    null, AccessContext.TEST);
            assertEquals(1, seq.getItemCount());
            NodeProxy a = (NodeProxy) seq.itemAt(0);
            assertEquals("1.3.2", a.getNodeId().toString());


            // test attribute id
            seq = xquery.execute("doc('/db/test/test_string.xml')/test//a/@href",
                    null, AccessContext.TEST);
            assertEquals(1, seq.getItemCount());
            NodeProxy href = (NodeProxy) seq.itemAt(0);
            System.out.println(StorageAddress.toString(href.getInternalAddress()));
            assertEquals("1.3.2.1", href.getNodeId().toString());
            // test Attr deserialization
            Attr attr = (Attr) href.getNode();
            System.out.println(StorageAddress.toString(((StoredNode)attr).getInternalAddress()));
            // test Attr fields
            assertEquals(attr.getNodeName(), "href");
            assertEquals(attr.getName(), "href");
            assertEquals(attr.getValue(), "#");
             // test DOMFile.getNodeValue()
            assertEquals(href.getStringValue(), "#");


            // test text node
            seq = xquery.execute("doc('/db/test/test_string.xml')/test//b/text()",
                    null, AccessContext.TEST);
            assertEquals(1, seq.getItemCount());
            NodeProxy text = (NodeProxy) seq.itemAt(0);
            assertEquals("1.5.2.1", text.getNodeId().toString());
            // test DOMFile.getNodeValue()
            assertEquals(text.getStringValue(), "paragraph");
            // test Text deserialization
            Text node = (Text) text.getNode();
            assertEquals(node.getNodeValue(), "paragraph");
            assertEquals(node.getData(), "paragraph");
        } catch (Exception e) {
            e.printStackTrace();
            fail(e.getMessage());
        } finally {
            pool.release(broker);
        }
    }

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            BrokerPool.configure(1, 5, config);
        } catch (Exception e) {
            fail(e.getMessage());
        }


        BrokerPool pool = BrokerPool.getInstance();
        DBBroker broker = null;
        TransactionManager transact = null;
        Txn transaction = null;       
        try {
            broker = pool.get(pool.getSecurityManager().getSystemSubject());
            transact = pool.getTransactionManager();
            transaction = transact.beginTransaction();
            System.out.println("Transaction started ...");


            Collection test = broker.getOrCreateCollection(transaction, TEST_COLLECTION);
            broker.saveCollection(transaction, test);


            IndexInfo info = test.validateXMLResource(transaction, broker, XmldbURI.create("test_string.xml"), 
                TEST_XML);
            //TODO : unlock the collection here ?
            assertNotNull(info);


            test.store(transaction, broker, info, TEST_XML, false);


            transact.commit(transaction);
            System.out.println("Transaction commited ...");
        } catch (Exception e) {
          transact.abort(transaction);
            fail(e.getMessage());
        } finally {
            pool.release(broker);
        }
    }

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        this.realm = realm;
        this.id = id;
        this.name = name;


        if (collection != null) {
            BrokerPool database;
            try {
                database = BrokerPool.getInstance();
            } catch (final EXistException e) {
                throw new ConfigurationException(e);
            } 


            DBBroker broker = null;
            try {
                broker = database.get(null);


                final Configuration _config_ = Configurator.parse(this, broker, collection, XmldbURI.create(name + ".xml"));
                configuration = Configurator.configure(this, _config_);
            } catch (final EXistException e) {
                throw new ConfigurationException(e);
            } finally {
                database.release(broker);
            }
        }
    }

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        decoder.reset();
        return outBuf.flip().toString();
    }


    private static Subject getUser() throws SVNException {
      BrokerPool database;
      try {
      database = BrokerPool.getInstance();
    } catch (EXistException e) {
            SVNErrorMessage err = SVNErrorMessage.create(SVNErrorCode.IO_ERROR, 
                    "Cannot get current user: {0}", e.getMessage());
            SVNErrorManager.error(err, e, Level.FINE, SVNLogType.DEFAULT);
            return null;
    }
    
      DBBroker broker = null;
    try {
      broker = database.get(null);
          return broker.getSubject();
    } catch (EXistException e) {
            SVNErrorMessage err = SVNErrorMessage.create(SVNErrorCode.IO_ERROR, 
                    "Cannot get current user: {0}", e.getMessage());
            SVNErrorManager.error(err, e, Level.FINE, SVNLogType.DEFAULT);
    } finally {
      database.release(broker);
    }
    
    return null;
    }

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                    break;
                }
            }
        }


        final BrokerPool pool = startDB( dbConfig );


        if( pool == null ) {
            System.exit( 1 );
        }
        int      retval = 0; // return value
        DBBroker broker = null;


        try {
            broker = pool.get(pool.getSecurityManager().getSystemSubject());
            List<ErrorReport> errors  = null;
            
            if(!nocheck) {
                final ConsistencyCheck  checker = new ConsistencyCheck( broker, direct, checkDocs );
                errors = checker.checkAll( new CheckCallback() );
            }


            if( errors != null && errors.size() > 0 ) {
                System.err.println( "ERRORS FOUND." );
                retval = 1;
            } else {
                System.out.println( "No errors." );
            }


            if( export ) {
                final File dir = new File( exportTarget );


                if( !dir.exists() ) {
                    dir.mkdirs();
                }
                final SystemExport sysexport = new SystemExport( broker, new Callback(verbose), null, direct );
                sysexport.export( exportTarget, incremental, zip, errors );
            }
        }
        catch( final EXistException e ) {
            System.err.println( "ERROR: Failed to retrieve database broker: " + e.getMessage() );
            retval = 2;
        }
        catch( final TerminatedException e ) {
            System.err.println( "WARN: Export was terminated by db." );
            retval = 3;
        }
        catch(final PermissionDeniedException pde) {
            System.err.println( "ERROR: Failed to retrieve database data: " + pde.getMessage() );
            retval = 4;
        }
        finally {
            pool.release( broker );
            BrokerPool.stopAll( false );
        }
        System.exit( retval );
    }

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        }


        @Override
        public Sequence call() throws XPathException {
          
          BrokerPool db = null;
            DBBroker broker = null;
            
            try {
        db = BrokerPool.getInstance();
      } catch (final EXistException e) {
                throw new XPathException("Unable to get new broker: " + e.getMessage(), e);
      }
            
            try {
                final XQueryContext context = callersContext.copyContext(); //make a copy
                broker = db.get(subject); //get a new broker


                return doEval(context, contextSequence, args);
            } catch(final EXistException ex) {
                throw new XPathException("Unable to get new broker: " + ex.getMessage(), ex);
            } finally {
              db.release(broker); //release the broker
            }
        }

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org.exist.collections.Collection

org.exist.collections.CollectionCache

org.exist.collections.CollectionConfiguration

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org.exist.collections.triggers.SAXTriggerTest

org.exist.config.Configurator

org.exist.deadlocks.GetReleaseBrokerDeadlocks$EnterServiceMode

org.exist.deadlocks.GetReleaseBrokerDeadlocks$GetRelease

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