QueryEngine (Apache Qpid Broker-J Query Engine Plug-In 9.2.0 API)

java.lang.Object
- org.apache.qpid.server.query.engine.QueryEngine

```
public class QueryEngine
extends Object
```
Bridge class between broker configuration and query evaluator

Constructor Summary

Constructors
Constructor Description

QueryEngine(Broker<?> broker)
Constructor injects broker and retrieves default configuration values

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`QueryEvaluator`	`createEvaluator()`	Creates query evaluator
`int`	`getCacheSize()`
`void`	`initQueryCache()`	Initializes query cache
`void`	`setMaxBigDecimalValue(BigDecimal maxBigDecimalValue)`
`void`	`setMaxQueryCacheSize(int maxQueryCacheSize)`
`void`	`setMaxQueryDepth(int maxQueryDepth)`
`void`	`setZoneId(ZoneId zoneId)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- QueryEngine
```
public QueryEngine(Broker<?> broker)
```
  Constructor injects broker and retrieves default configuration values
  
  Parameters:
  
  broker - Broker instance

Method Detail

initQueryCache
```
public void initQueryCache()
```
Initializes query cache

createEvaluator
```
public QueryEvaluator createEvaluator()
```
Creates query evaluator

Returns:

QueryEvaluator instance

setMaxBigDecimalValue

public void setMaxBigDecimalValue(BigDecimal maxBigDecimalValue)

setMaxQueryCacheSize

public void setMaxQueryCacheSize(int maxQueryCacheSize)

setMaxQueryDepth

public void setMaxQueryDepth(int maxQueryDepth)

setZoneId

public void setZoneId(ZoneId zoneId)

getCacheSize
```
public int getCacheSize()
```