Examples of EPStatement

com.espertech.esper.client.EPStatement
Statement interface that provides methods to start, stop and destroy a statement as well as get statement information such as statement name, expression text and current state.
Statements have 3 states: STARTED, STOPPED and DESTROYED.
In started state, statements are actively evaluating event streams according to the statement expression. Started statements can be stopped and destroyed.
In stopped state, statements are inactive. Stopped statements can either be started, in which case they begin to actively evaluate event streams, or destroyed.
Destroyed statements have relinguished all statement resources and cannot be started or stopped.

Examples of com.espertech.esper.client.EPStatement

        }


        List<DeploymentInformationItem> revertedStatements = new ArrayList<DeploymentInformationItem>();
        Set<String> referencedTypes = new HashSet<String>();
        for (DeploymentInformationItem item : reverted) {
            EPStatement statement = epService.getStatement(item.getStatementName());
            if (statement == null) {
                log.debug("Deployment id '" + info.getDeploymentId() + "' statement name '" + item + "' not found");
                continue;
            }
            referencedTypes.addAll(statementEventTypeRef.getTypesForStatementName(statement.getName()));
            if (statement.isDestroyed()) {
                continue;
            }
            try {
                statement.destroy();
            }
            catch (RuntimeException ex) {
                log.warn("Unexpected exception destroying statement: " + ex.getMessage(), ex);
            }
            revertedStatements.add(item);

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Examples of com.espertech.esper.client.EPStatement


    public EPStatement createEPLStatementId(String eplStatement, String statementName, Object userObject, String statementId) throws EPException
    {
        SelectClauseStreamSelectorEnum defaultStreamSelector = SelectClauseStreamSelectorEnum.mapFromSODA(unisolatedServices.getConfigSnapshot().getEngineDefaults().getStreamSelection().getDefaultStreamSelector());
        StatementSpecRaw statementSpec = EPAdministratorHelper.compileEPL(eplStatement, eplStatement, true, statementName, unisolatedServices, defaultStreamSelector);
        EPStatement statement = unisolatedServices.getStatementLifecycleSvc().createAndStart(statementSpec, eplStatement, false, statementName, userObject, services, statementId, null);
        EPStatementSPI stmtSpi = (EPStatementSPI) statement;
        stmtSpi.getStatementContext().setInternalEventEngineRouteDest(isolatedRuntime);
        stmtSpi.setServiceIsolated(isolatedServiceName);
        statementNames.add(stmtSpi.getName());
        return statement;

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Examples of com.espertech.esper.client.EPStatement

    public void removeAllStatements()
    {
        List<EPStatement> statements = new ArrayList<EPStatement>();
        for (String stmtName : statementNames)
        {
            EPStatement stmt = unisolatedServices.getStatementLifecycleSvc().getStatementByName(stmtName);
            if (stmt == null)
            {
                log.debug("Statement '" + stmtName + "', the statement could not be found");
                continue;
            }


            if (stmt.getServiceIsolated() != null && (!stmt.getServiceIsolated().equals(isolatedServiceName)))
            {
                log.error("Error returning statement '" + stmtName + "', the internal isolation information is incorrect, isolated service for statement is currently '" +
                        stmt.getServiceIsolated() + "' and mismatches this isolated services named '" + isolatedServiceName + "'");
                continue;
            }


            statements.add(stmt);
        }

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Examples of com.espertech.esper.client.EPStatement

          .compileEPL(epStatement.getEsperStatement());


      // Create the actual statement in the current Esper engine from the
      // statement model.
      final String stmtName = epStatement.getName();
      final EPStatement stmt = (stmtName == null ? epAdmin
          .create(stmtModel) : epAdmin.create(stmtModel, stmtName));


      // If an output sink was defined, then we add a subscriber.
      if (epStatement.getOutput() != null) {
        final String sinkName = epStatement.getOutput();
        final Sink sink = _sinksMap.get(sinkName);
        final String[] propertyNames = stmt.getEventType()
            .getPropertyNames();


        if (sink == null) {
          _log.warn(
              "Statement {} declares the sink {} "
                  + "but the corresponding Esper processor does not.",
              epStatement, sinkName);
        } else {
          final EsperStatementSubscriber subscriber = new EsperStatementSubscriber(
              sink, propertyNames);
          _log.info("Adding subscriber {} to statement {}", sink.getId(),
              epStatement);
          stmt.setSubscriber(subscriber);
        }
      }
    }
    _log.debug("Finished adding statements to Esper service");

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Examples of com.espertech.esper.client.EPStatement


    public EPStatement createEPLStatementId(String eplStatement, String statementName, Object userObject, String statementId) throws EPException
    {
        SelectClauseStreamSelectorEnum defaultStreamSelector = SelectClauseStreamSelectorEnum.mapFromSODA(unisolatedServices.getConfigSnapshot().getEngineDefaults().getStreamSelection().getDefaultStreamSelector());
        StatementSpecRaw statementSpec = EPAdministratorHelper.compileEPL(eplStatement, eplStatement, true, statementName, unisolatedServices, defaultStreamSelector);
        EPStatement statement = unisolatedServices.getStatementLifecycleSvc().createAndStart(statementSpec, eplStatement, false, statementName, userObject, services, statementId, null);
        EPStatementSPI stmtSpi = (EPStatementSPI) statement;
        stmtSpi.getStatementContext().setInternalEventEngineRouteDest(isolatedRuntime);
        stmtSpi.setServiceIsolated(isolatedServiceName);
        statementNames.add(stmtSpi.getName());
        return statement;

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Examples of com.espertech.esper.client.EPStatement

    public void removeAllStatements()
    {
        List<EPStatement> statements = new ArrayList<EPStatement>();
        for (String stmtName : statementNames)
        {
            EPStatement stmt = unisolatedServices.getStatementLifecycleSvc().getStatementByName(stmtName);
            if (stmt == null)
            {
                log.error("Error returning statement '" + stmtName + "', the statement could not be found");
                continue;
            }


            if (stmt.getServiceIsolated() != null && (!stmt.getServiceIsolated().equals(isolatedServiceName)))
            {
                log.error("Error returning statement '" + stmtName + "', the internal isolation information is incorrect, isolated service for statement is currently '" +
                        stmt.getServiceIsolated() + "' and mismatches this isolated services named '" + isolatedServiceName + "'");
                continue;
            }


            statements.add(stmt);
        }

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Examples of com.espertech.esper.client.EPStatement

                statementName = options.getStatementNameResolver() != null ? options.getStatementNameResolver().getStatementName(ctx) : null;
                userObject = options.getStatementUserObjectResolver() != null ? options.getStatementUserObjectResolver().getUserObject(ctx) : null;
            }


            try {
                EPStatement stmt;
                if (optionalStatementIdGenerator == null) {
                    if (options.getIsolatedServiceProvider() == null) {
                        stmt = epService.createEPL(item.getExpression(), statementName, userObject);
                    }
                    else {
                        EPServiceProviderIsolated unit = statementIsolationService.getIsolationUnit(options.getIsolatedServiceProvider(), -1);
                        stmt = unit.getEPAdministrator().createEPL(item.getExpression(), statementName, userObject);
                    }
                }
                else {
                    String statementId = optionalStatementIdGenerator.getNextStatementId();
                    if (options.getIsolatedServiceProvider() == null) {
                        stmt = epService.createEPLStatementId(item.getExpression(), statementName, userObject, statementId);
                    }
                    else {
                        EPServiceProviderIsolated unit = statementIsolationService.getIsolationUnit(options.getIsolatedServiceProvider(), -1);
                        EPAdministratorIsolatedSPI spi = (EPAdministratorIsolatedSPI) unit.getEPAdministrator();
                        stmt = spi.createEPLStatementId(item.getExpression(), statementName, userObject, statementId);
                    }
                }
                statementNames.add(new DeploymentInformationItem(stmt.getName(), stmt.getText()));
                statements.add(stmt);


                String[] types = statementEventTypeRef.getTypesForStatementName(stmt.getName());
                if (types != null) {
                    eventTypesReferenced.addAll(Arrays.asList(types));
                }
            }
            catch (EPException ex) {
                exceptions.add(new DeploymentItemException(ex.getMessage(), item.getExpression(), ex, item.getLineNumber()));
                if (options.isFailFast()) {
                    break;
                }
            }
        }


        if (!exceptions.isEmpty()) {
            if (options.isRollbackOnFail()) {
                log.debug("Rolling back intermediate statements for deployment");
                for (EPStatement stmt : statements) {
                    try {
                        stmt.destroy();
                    }
                    catch (Exception ex) {
                        log.debug("Failed to destroy created statement during rollback: " + ex.getMessage(), ex);
                    }
                }
                EPLModuleUtil.undeployTypes(eventTypesReferenced, statementEventTypeRef, eventAdapterService, filterService);
            }
            String text = "Deployment failed";
            if (options.isValidateOnly()) {
                text = "Validation failed";
            }
            throw buildException(text, module, exceptions);
        }


        if (options.isValidateOnly()) {
            log.debug("Rolling back created statements for validate-only");
            for (EPStatement stmt : statements) {
                try {
                    stmt.destroy();
                }
                catch (Exception ex) {
                    log.debug("Failed to destroy created statement during rollback: " + ex.getMessage(), ex);
                }
            }

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Examples of com.espertech.esper.client.EPStatement


        List<DeploymentInformationItem> revertedStatements = new ArrayList<DeploymentInformationItem>();
        if (undeploymentOptions.isDestroyStatements()) {
            Set<String> referencedTypes = new HashSet<String>();
            for (DeploymentInformationItem item : reverted) {
                EPStatement statement = epService.getStatement(item.getStatementName());
                if (statement == null) {
                    log.debug("Deployment id '" + info.getDeploymentId() + "' statement name '" + item + "' not found");
                    continue;
                }
                referencedTypes.addAll(Arrays.asList(statementEventTypeRef.getTypesForStatementName(statement.getName())));
                if (statement.isDestroyed()) {
                    continue;
                }
                try {
                    statement.destroy();
                }
                catch (RuntimeException ex) {
                    log.warn("Unexpected exception destroying statement: " + ex.getMessage(), ex);
                }
                revertedStatements.add(item);

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Examples of com.espertech.esper.client.EPStatement

        // read all lines into the buffer.
        while ((line = reader.readLine()) != null) {
          buffer.append(line);
        }
        // Add the statement to the Esper engine.
        final EPStatement statement = _epService.getEPAdministrator()
            .createEPL(buffer.toString().trim());


        // Add a subscriber to the statement that logs all update
        // events to this statement.
        statement.setSubscriber(new LogSubscriber(statement));


        _log.info("Finished reading statement file {}.", statementFile);
      } catch (Exception e) {
        _log.error("Error reading statement file {}!", statementFile, e);
        assert false;

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Examples of com.espertech.esper.client.EPStatement

      final EPStatementObjectModel stmtModel = epAdmin
          .compileEPL(epStatement);


      // Create the actual statement in the current Esper engine from the
      // statement model.
      final EPStatement stmt = epAdmin.create(stmtModel);


      // Compute the hash value of the statement.
      // We use this to reference the statement's sink, if it declares
      // any.
      final String stmtName = Integer.toString(epStatement.hashCode());


      final Sink sink = _sinksMap.get(_statementSinksMap.get(stmtName));
      final String[] propertyNames = stmt.getEventType()
          .getPropertyNames();


      // Only add a subscriber, if the statement delcares to send its
      // output to a queue.
      if (sink != null) {
        final EsperStatementSubscriber subscriber = new EsperStatementSubscriber(
            sink, propertyNames);
        _log.debug("Adding subscriber to statement {}", stmtName);
        stmt.setSubscriber(subscriber);
      }
    }
    _log.debug("Finished adding statements to Esper service");


    _log.debug("Mapping event types to timestamp properties, if any");

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