com.espertech.esper.event.bean

Class BaseNativePropertyGetter

java.lang.Object

com.espertech.esper.event.bean.BaseNativePropertyGetter

All Implemented Interfaces:

EventPropertyGetter, EventPropertyGetterSPI

Direct Known Subclasses:

ArrayFastPropertyGetter, ArrayFieldPropertyGetter, ArrayMethodPropertyGetter, CGLibPropertyGetter, IterableFastPropertyGetter, IterableFieldPropertyGetter, IterableMethodPropertyGetter, KeyedFastPropertyGetter, KeyedMapFastPropertyGetter, KeyedMapFieldPropertyGetter, KeyedMapMethodPropertyGetter, KeyedMethodPropertyGetter, ListFastPropertyGetter, ListFieldPropertyGetter, ListMethodPropertyGetter, MapArrayPOJOBeanEntryIndexedPropertyGetter, MapArrayPOJOEntryIndexedPropertyGetter, MapPOJOEntryPropertyGetter, NestedPropertyGetter, ObjectArrayArrayPOJOBeanEntryIndexedPropertyGetter, ObjectArrayArrayPOJOEntryIndexedPropertyGetter, ObjectArrayPOJOEntryPropertyGetter, ReflectionPropFieldGetter, ReflectionPropMethodGetter

public abstract class BaseNativePropertyGetter
extends Object
implements EventPropertyGetterSPI

Base getter for native fragments.

Constructor Summary

Constructors

Constructor and Description
BaseNativePropertyGetter(EventAdapterService eventAdapterService, Class returnType, Class genericType) Constructor.

Method Summary

Modifier and Type	Method and Description
CodegenExpression	eventBeanFragmentCodegen(CodegenExpression beanExpression, CodegenContext context)
abstract Class	getBeanPropType()
Object	getFragment(EventBean eventBean) Returns EventBean or array of EventBean for a property name or property expression.
static Object	getFragmentDynamic(Object object, EventAdapterService eventAdapterService) NOTE: Code-generation-invoked method, method name and parameter order matters Returns the fragment for dynamic properties.
abstract Class	getTargetType()
static Object	toFragmentArray(Object[] object, BeanEventType fragmentEventType, EventAdapterService eventAdapterService) NOTE: Code-generation-invoked method, method name and parameter order matters
static Object	toFragmentIterable(Object object, BeanEventType fragmentEventType, EventAdapterService eventAdapterService) NOTE: Code-generation-invoked method, method name and parameter order matters Returns the fragment for dynamic properties.
CodegenExpression	underlyingFragmentCodegen(CodegenExpression underlyingExpression, CodegenContext context)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.espertech.esper.event.EventPropertyGetterSPI

eventBeanExistsCodegen, eventBeanGetCodegen, underlyingExistsCodegen, underlyingGetCodegen

Methods inherited from interface com.espertech.esper.client.EventPropertyGetter

get, isExistsProperty

Constructor Detail

BaseNativePropertyGetter

public BaseNativePropertyGetter(EventAdapterService eventAdapterService,
                                Class returnType,
                                Class genericType)

Constructor.

Parameters:

eventAdapterService - factory for event beans and event types

returnType - type of the entry returned

genericType - type generic parameter, if any

Method Detail

getTargetType

public abstract Class getTargetType()

getBeanPropType

public abstract Class getBeanPropType()

toFragmentArray

public static Object toFragmentArray(Object[] object,
                                     BeanEventType fragmentEventType,
                                     EventAdapterService eventAdapterService)

NOTE: Code-generation-invoked method, method name and parameter order matters

Parameters:

object - array

fragmentEventType - fragment type

eventAdapterService - event adapters

Returns:

array

getFragmentDynamic

public static Object getFragmentDynamic(Object object,
                                        EventAdapterService eventAdapterService)

NOTE: Code-generation-invoked method, method name and parameter order matters Returns the fragment for dynamic properties.

Parameters:

object - to inspect

eventAdapterService - factory for event beans and event types

Returns:

fragment

toFragmentIterable

public static Object toFragmentIterable(Object object,
                                        BeanEventType fragmentEventType,
                                        EventAdapterService eventAdapterService)

NOTE: Code-generation-invoked method, method name and parameter order matters Returns the fragment for dynamic properties.

Parameters:

object - to inspect

fragmentEventType - type

eventAdapterService - factory for event beans and event types

Returns:

fragment

getFragment

public Object getFragment(EventBean eventBean)

Description copied from interface: EventPropertyGetter

Returns EventBean or array of EventBean for a property name or property expression.

For use with properties whose value is itself an event or whose value can be represented as an event by the underlying event representation.

The EventType of the EventBean instance(s) returned by this method can be determined by EventType.getFragmentType(String). Use EventPropertyDescriptor to obtain a list of properties that return fragments from an event type.

Returns null if the property value is null or the property value cannot be represented as a fragment by the underlying representation.

Specified by:

getFragment in interface EventPropertyGetter

Parameters:

eventBean - is the event to get the fragment value of a property

Returns:

the value of a property as an EventBean or array of EventBean

eventBeanFragmentCodegen

public final CodegenExpression eventBeanFragmentCodegen(CodegenExpression beanExpression,
                                                        CodegenContext context)

Specified by:

eventBeanFragmentCodegen in interface EventPropertyGetterSPI

underlyingFragmentCodegen

public final CodegenExpression underlyingFragmentCodegen(CodegenExpression underlyingExpression,
                                                         CodegenContext context)

Specified by:

underlyingFragmentCodegen in interface EventPropertyGetterSPI