Package com.espertech.esper.common.internal.event.xml

Class DOMComplexElementGetter

java.lang.Object

com.espertech.esper.common.internal.event.xml.DOMComplexElementGetter

All Implemented Interfaces:

EventPropertyGetter, EventPropertyValueGetter, EventPropertyGetterSPI, EventPropertyValueGetterForge, DOMPropertyGetter

public class DOMComplexElementGetter
extends Object
implements EventPropertyGetterSPI, DOMPropertyGetter

Getter for a DOM complex element.

Field Summary

Fields inherited from interface com.espertech.esper.common.client.EventPropertyValueGetter

EPTYPE, EPTYPEARRAY

Constructor Summary

Constructors

Constructor	Description
DOMComplexElementGetter(String propertyName, FragmentFactorySPI fragmentFactory, boolean isArray)	Ctor.

Method Summary

Modifier and Type	Method	Description
CodegenExpression	eventBeanExistsCodegen(CodegenExpression beanExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope)
CodegenExpression	eventBeanFragmentCodegen(CodegenExpression beanExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope)
CodegenExpression	eventBeanGetCodegen(CodegenExpression beanExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope)
Object	get(EventBean obj)	Return the value for the property in the event object specified when the instance was obtained.
Object	getFragment(EventBean obj)	Returns EventBean or array of EventBean for a property name or property expression.
Object	getValueAsFragment(Node node)	Returns a property value as a fragment.
CodegenExpression	getValueAsFragmentCodegen(CodegenExpression value, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope)
Node	getValueAsNode(Node node)	Returns a property value as a node.
static Node	getValueAsNode(Node node, String propertyName)	NOTE: Code-generation-invoked method, method name and parameter order matters
Node[]	getValueAsNodeArray(Node node)	Returns a property value that is indexed as a node array.
static Node[]	getValueAsNodeArray(Node node, String propertyName)	NOTE: Code-generation-invoked method, method name and parameter order matters
CodegenExpression	getValueAsNodeArrayCodegen(CodegenExpression value, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope)
CodegenExpression	getValueAsNodeCodegen(CodegenExpression value, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope)
static Object	getValueAsNodeFragment(Node node, String propertyName, FragmentFactory fragmentFactory)	NOTE: Code-generation-invoked method, method name and parameter order matters
static Object	getValueAsNodeFragmentArray(Node node, String propertyName, FragmentFactory fragmentFactory)	NOTE: Code-generation-invoked method, method name and parameter order matters
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, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope)
CodegenExpression	underlyingFragmentCodegen(CodegenExpression underlyingExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope)
CodegenExpression	underlyingGetCodegen(CodegenExpression underlyingExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope)

Methods inherited from class java.lang.Object

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

Constructor Details

DOMComplexElementGetter

public DOMComplexElementGetter(String propertyName,
 FragmentFactorySPI fragmentFactory,
 boolean isArray)

Ctor.

Parameters:

propertyName - property name

fragmentFactory - for creating fragments

isArray - if this is an array property

Method Details

getValueAsNode

public static Node getValueAsNode(Node node,
 String propertyName)

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

Parameters:

node - node

propertyName - prop name

Returns:

node

getValueAsNodeArray

public static Node[] getValueAsNodeArray(Node node,
 String propertyName)

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

Parameters:

node - node

propertyName - prop name

Returns:

node

getValueAsNodeFragment

public static Object getValueAsNodeFragment(Node node,
 String propertyName,
 FragmentFactory fragmentFactory)

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

Parameters:

node - node

propertyName - prop name

fragmentFactory - fragment factory

Returns:

node

getValueAsNodeFragmentArray

public static Object getValueAsNodeFragmentArray(Node node,
 String propertyName,
 FragmentFactory fragmentFactory)

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

Parameters:

node - node

propertyName - prop name

fragmentFactory - fragment factory

Returns:

node

getValueAsFragment

public Object getValueAsFragment(Node node)

Description copied from interface: DOMPropertyGetter

Returns a property value as a fragment.

Specified by:

getValueAsFragment in interface DOMPropertyGetter

Parameters:

node - to evaluate

Returns:

fragment

getValueAsNode

public Node getValueAsNode(Node node)

Description copied from interface: DOMPropertyGetter

Returns a property value as a node.

Specified by:

getValueAsNode in interface DOMPropertyGetter

Parameters:

node - to evaluate

Returns:

value node

getValueAsNodeArray

public Node[] getValueAsNodeArray(Node node)

Description copied from interface: DOMPropertyGetter

Returns a property value that is indexed as a node array.

Specified by:

getValueAsNodeArray in interface DOMPropertyGetter

Parameters:

node - to evaluate

Returns:

nodes

get

public Object get(EventBean obj)
           throws PropertyAccessException

Description copied from interface: EventPropertyValueGetter

Return the value for the property in the event object specified when the instance was obtained. Useful for fast access to event properties. Throws a PropertyAccessException if the getter instance doesn't match the EventType it was obtained from, and to indicate other property access problems.

Specified by:

get in interface EventPropertyValueGetter

Parameters:

obj - is the event to get the value of a property from

Returns:

value of property in event

Throws:

PropertyAccessException - to indicate that property access failed

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

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

getFragment

public Object getFragment(EventBean obj)
                   throws PropertyAccessException

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:

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

Returns:

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

Throws:

PropertyAccessException - - if there is no property of the specified name, or the property cannot be accessed

eventBeanGetCodegen

public CodegenExpression eventBeanGetCodegen(CodegenExpression beanExpression,
 CodegenMethodScope codegenMethodScope,
 CodegenClassScope codegenClassScope)

Specified by:

eventBeanGetCodegen in interface EventPropertyValueGetterForge

eventBeanExistsCodegen

public CodegenExpression eventBeanExistsCodegen(CodegenExpression beanExpression,
 CodegenMethodScope codegenMethodScope,
 CodegenClassScope codegenClassScope)

Specified by:

eventBeanExistsCodegen in interface EventPropertyGetterSPI

eventBeanFragmentCodegen

public CodegenExpression eventBeanFragmentCodegen(CodegenExpression beanExpression,
 CodegenMethodScope codegenMethodScope,
 CodegenClassScope codegenClassScope)

Specified by:

eventBeanFragmentCodegen in interface EventPropertyGetterSPI

underlyingGetCodegen

public CodegenExpression underlyingGetCodegen(CodegenExpression underlyingExpression,
 CodegenMethodScope codegenMethodScope,
 CodegenClassScope codegenClassScope)

Specified by:

underlyingGetCodegen in interface EventPropertyGetterSPI

underlyingExistsCodegen

public CodegenExpression underlyingExistsCodegen(CodegenExpression underlyingExpression,
 CodegenMethodScope codegenMethodScope,
 CodegenClassScope codegenClassScope)

Specified by:

underlyingExistsCodegen in interface EventPropertyGetterSPI

underlyingFragmentCodegen

public CodegenExpression underlyingFragmentCodegen(CodegenExpression underlyingExpression,
 CodegenMethodScope codegenMethodScope,
 CodegenClassScope codegenClassScope)

Specified by:

underlyingFragmentCodegen in interface EventPropertyGetterSPI

getValueAsNodeCodegen

public CodegenExpression getValueAsNodeCodegen(CodegenExpression value,
 CodegenMethodScope codegenMethodScope,
 CodegenClassScope codegenClassScope)

Specified by:

getValueAsNodeCodegen in interface DOMPropertyGetter

getValueAsNodeArrayCodegen

public CodegenExpression getValueAsNodeArrayCodegen(CodegenExpression value,
 CodegenMethodScope codegenMethodScope,
 CodegenClassScope codegenClassScope)

Specified by:

getValueAsNodeArrayCodegen in interface DOMPropertyGetter

getValueAsFragmentCodegen

public CodegenExpression getValueAsFragmentCodegen(CodegenExpression value,
 CodegenMethodScope codegenMethodScope,
 CodegenClassScope codegenClassScope)

Specified by:

getValueAsFragmentCodegen in interface DOMPropertyGetter