com.espertech.esper.event.map

Class MapNestedEntryPropertyGetterPropertyProvidedDynamic

java.lang.Object

com.espertech.esper.event.map.MapNestedEntryPropertyGetterBase

com.espertech.esper.event.map.MapNestedEntryPropertyGetterPropertyProvidedDynamic

All Implemented Interfaces:

EventPropertyGetter, EventPropertyGetterSPI, MapEventPropertyGetter

public class MapNestedEntryPropertyGetterPropertyProvidedDynamic
extends MapNestedEntryPropertyGetterBase

Field Summary

Fields inherited from class com.espertech.esper.event.map.MapNestedEntryPropertyGetterBase

eventAdapterService, fragmentType, propertyMap

Constructor Summary

Constructors

Constructor and Description
MapNestedEntryPropertyGetterPropertyProvidedDynamic(String propertyMap, EventType fragmentType, EventAdapterService eventAdapterService, EventPropertyGetter nestedGetter)

Method Summary

Modifier and Type	Method and Description
CodegenExpression	eventBeanExistsCodegen(CodegenExpression beanExpression, CodegenContext context)
Object	handleNestedValue(Object value)
CodegenExpression	handleNestedValueCodegen(CodegenExpression valueExpression, CodegenContext context)
Object	handleNestedValueFragment(Object value)
CodegenExpression	handleNestedValueFragmentCodegen(CodegenExpression name, CodegenContext context)
boolean	isExistsProperty(EventBean eventBean) Returns true if the property exists, or false if the type does not have such a property.
CodegenExpression	underlyingExistsCodegen(CodegenExpression underlyingExpression, CodegenContext context)

Methods inherited from class com.espertech.esper.event.map.MapNestedEntryPropertyGetterBase

eventBeanFragmentCodegen, eventBeanGetCodegen, get, getFragment, getMap, isMapExistsProperty, underlyingFragmentCodegen, underlyingGetCodegen

Methods inherited from class java.lang.Object

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

Constructor Detail

MapNestedEntryPropertyGetterPropertyProvidedDynamic

public MapNestedEntryPropertyGetterPropertyProvidedDynamic(String propertyMap,
                                                           EventType fragmentType,
                                                           EventAdapterService eventAdapterService,
                                                           EventPropertyGetter nestedGetter)

Method Detail

isExistsProperty

public boolean isExistsProperty(EventBean eventBean)

Description copied from interface: EventPropertyGetter

Returns true if the property exists, or false if the type does not have such a property.

Useful for dynamic properties of the syntax "property?" and the dynamic nested/indexed/mapped versions. Dynamic nested properties follow the syntax "property?.nested" which is equivalent to "property?.nested?". If any of the properties in the path of a dynamic nested property return null, the dynamic nested property does not exists and the method returns false.

For non-dynamic properties, this method always returns true since a getter would not be available unless

Specified by:

isExistsProperty in interface EventPropertyGetter

Overrides:

isExistsProperty in class MapNestedEntryPropertyGetterBase

Parameters:

eventBean - is the event to check if the dynamic property exists

Returns:

indictor whether the property exists, always true for non-dynamic (default) properties

handleNestedValue

public Object handleNestedValue(Object value)

Specified by:

handleNestedValue in class MapNestedEntryPropertyGetterBase

handleNestedValueFragment

public Object handleNestedValueFragment(Object value)

Specified by:

handleNestedValueFragment in class MapNestedEntryPropertyGetterBase

handleNestedValueCodegen

public CodegenExpression handleNestedValueCodegen(CodegenExpression valueExpression,
                                                  CodegenContext context)

Specified by:

handleNestedValueCodegen in class MapNestedEntryPropertyGetterBase

handleNestedValueFragmentCodegen

public CodegenExpression handleNestedValueFragmentCodegen(CodegenExpression name,
                                                          CodegenContext context)

Specified by:

handleNestedValueFragmentCodegen in class MapNestedEntryPropertyGetterBase

eventBeanExistsCodegen

public CodegenExpression eventBeanExistsCodegen(CodegenExpression beanExpression,
                                                CodegenContext context)

Specified by:

eventBeanExistsCodegen in interface EventPropertyGetterSPI

Overrides:

eventBeanExistsCodegen in class MapNestedEntryPropertyGetterBase

underlyingExistsCodegen

public CodegenExpression underlyingExistsCodegen(CodegenExpression underlyingExpression,
                                                 CodegenContext context)

Specified by:

underlyingExistsCodegen in interface EventPropertyGetterSPI

Overrides:

underlyingExistsCodegen in class MapNestedEntryPropertyGetterBase