Examples of com.espertech.esper.epl.variable.VariableReader

Package com.espertech.esper.epl.variable

Examples of com.espertech.esper.epl.variable.VariableReader

com.espertech.esper.epl.variable.VariableReader
Reads and writes variable values.
Works closely with {@link VariableService} in determining the version to read.

        this.unmatchedListener = listener;
    }


    public void setVariableValue(String variableName, Object variableValue) throws EPException
    {
        VariableReader reader = services.getVariableService().getReader(variableName);
        if (reader == null) {
            throw new VariableNotFoundException("Variable by name '" + variableName + "' has not been declared");
        }
        if (reader.isConstant()) {
            throw new VariableConstantValueException("Variable by name '" + variableName + "' is declared as constant and may not be assigned a new value");
        }


        services.getVariableService().getReadWriteLock().writeLock().lock();
        try {
            services.getVariableService().checkAndWrite(reader.getVariableNumber(), variableValue);
            services.getVariableService().commit();
        }
        finally {
            services.getVariableService().getReadWriteLock().writeLock().unlock();
        }

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    {
        // verify
        for (Map.Entry<String, Object> entry : variableValues.entrySet())
        {
            String variableName = entry.getKey();
            VariableReader reader = services.getVariableService().getReader(variableName);
            if (reader == null) {
                throw new VariableNotFoundException("Variable by name '" + variableName + "' has not been declared");
            }
            if (reader.isConstant()) {
                throw new VariableConstantValueException("Variable by name '" + variableName + "' is declared as constant and may not be assigned a new value");
            }
        }


        // set values
        services.getVariableService().getReadWriteLock().writeLock().lock();
        try {
            for (Map.Entry<String, Object> entry : variableValues.entrySet())
            {
                String variableName = entry.getKey();
                VariableReader reader = services.getVariableService().getReader(variableName);
                try
                {
                    services.getVariableService().checkAndWrite(reader.getVariableNumber(), entry.getValue());
                }
                catch (RuntimeException ex)
                {
                    services.getVariableService().rollback();
                    throw ex;

View Full Code Here

    }


    public Object getVariableValue(String variableName) throws EPException
    {
        services.getVariableService().setLocalVersion();
        VariableReader reader = services.getVariableService().getReader(variableName);
        if (reader == null) {
            throw new VariableNotFoundException("Variable by name '" + variableName + "' has not been declared");
        }
        Object value = reader.getValue();
        if (value == null || reader.getEventType() == null) {
            return value;
        }
        return ((EventBean) value).getUnderlying();
    }

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    {
        services.getVariableService().setLocalVersion();
        Map<String, Object> values = new HashMap<String, Object>();
        for (String variableName : variableNames)
        {
            VariableReader reader = services.getVariableService().getReader(variableName);
            if (reader == null)
            {
                throw new VariableNotFoundException("Variable by name '" + variableName + "' has not been declared");
            }


            Object value = reader.getValue();
            if (value != null && reader.getEventType() != null) {
                value = ((EventBean) value).getUnderlying();
            }
            values.put(variableName, value);
        }
        return values;

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        return values;
    }


    public Class getVariableType(String variableName)
    {
        VariableReader reader = services.getVariableService().getReader(variableName);
        if (reader == null)
        {
            return null;
        }
        return reader.getType();
    }

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        if (parent.getVariableNames() != null)
        {
            // if using variables, register a callback on the change of the variable
            for (String variableName : parent.getVariableNames())
            {
                final VariableReader reader = agentInstanceContext.getStatementContext().getVariableService().getReader(variableName);
                agentInstanceContext.getStatementContext().getVariableService().registerCallback(reader.getVariableNumber(), this);
                agentInstanceContext.addTerminationCallback(new StopCallback() {
                    public void stop() {
                        agentInstanceContext.getStatementContext().getVariableService().unregisterCallback(reader.getVariableNumber(), OutputConditionExpression.this);
                    }
                });
            }
        }
    }

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    }


    private AggSvcGroupByReclaimAgedEvalFunc getEvaluationFunction(final VariableService variableService, String hintValue)
            throws ExprValidationException
    {
        final VariableReader variableReader = variableService.getReader(hintValue);
        if (variableReader != null)
        {
            if (!JavaClassHelper.isNumeric(variableReader.getType()))
            {
                throw new ExprValidationException("Variable type of variable '" + variableReader.getVariableName() + "' is not numeric");
            }


            return new AggSvcGroupByReclaimAgedEvalFuncVariable(variableReader);
        }
        else

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        this.unmatchedListener = listener;
    }


    public void setVariableValue(String variableName, Object variableValue) throws EPException
    {
        VariableReader reader = services.getVariableService().getReader(variableName);
        if (reader == null) {
            throw new VariableNotFoundException("Variable by name '" + variableName + "' has not been declared");
        }
        if (reader.isConstant()) {
            throw new VariableConstantValueException("Variable by name '" + variableName + "' is declared as constant and may not be assigned a new value");
        }


        services.getVariableService().getReadWriteLock().writeLock().lock();
        try {
            services.getVariableService().checkAndWrite(reader.getVariableNumber(), variableValue);
            services.getVariableService().commit();
        }
        finally {
            services.getVariableService().getReadWriteLock().writeLock().unlock();
        }

View Full Code Here

    {
        // verify
        for (Map.Entry<String, Object> entry : variableValues.entrySet())
        {
            String variableName = entry.getKey();
            VariableReader reader = services.getVariableService().getReader(variableName);
            if (reader == null) {
                throw new VariableNotFoundException("Variable by name '" + variableName + "' has not been declared");
            }
            if (reader.isConstant()) {
                throw new VariableConstantValueException("Variable by name '" + variableName + "' is declared as constant and may not be assigned a new value");
            }
        }


        // set values
        services.getVariableService().getReadWriteLock().writeLock().lock();
        try {
            for (Map.Entry<String, Object> entry : variableValues.entrySet())
            {
                String variableName = entry.getKey();
                VariableReader reader = services.getVariableService().getReader(variableName);
                try
                {
                    services.getVariableService().checkAndWrite(reader.getVariableNumber(), entry.getValue());
                }
                catch (RuntimeException ex)
                {
                    services.getVariableService().rollback();
                    throw ex;

View Full Code Here

    }


    public Object getVariableValue(String variableName) throws EPException
    {
        services.getVariableService().setLocalVersion();
        VariableReader reader = services.getVariableService().getReader(variableName);
        if (reader == null) {
            throw new VariableNotFoundException("Variable by name '" + variableName + "' has not been declared");
        }
        Object value = reader.getValue();
        if (value == null || reader.getEventType() == null) {
            return value;
        }
        return ((EventBean) value).getUnderlying();
    }

View Full Code Here

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com.espertech.esper.core.EPRuntimeImpl

com.espertech.esper.core.service.ConfigurationOperationsImpl

com.espertech.esper.core.service.EPRuntimeImpl

com.espertech.esper.epl.agg.AggSvcGroupByReclaimAged

com.espertech.esper.epl.agg.AggSvcGroupByReclaimAgedFactory

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com.espertech.esper.epl.expression.ExprDotNode

com.espertech.esper.epl.expression.ExprVariableNodeImpl

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