Package io.micronaut.context.expressions

Class DefaultExpressionEvaluationContext

java.lang.Object

io.micronaut.context.expressions.DefaultExpressionEvaluationContext

All Implemented Interfaces:

ConfigurableExpressionEvaluationContext, ExpressionEvaluationContext, AutoCloseable

@Internal
public final class DefaultExpressionEvaluationContext
extends Object
implements ConfigurableExpressionEvaluationContext

Default implementation of ConfigurableExpressionEvaluationContext. For this implementation, the methods mutating evaluation context return new instance of expression evaluation context.

Since:

4.0.0

Author:

Sergey Gavrilov

Constructor Summary

Constructors

Constructor	Description
DefaultExpressionEvaluationContext()
DefaultExpressionEvaluationContext(@Nullable Object thisObject, @Nullable Object[] args, @Nullable BeanContext beanContext, @Nullable BeanDefinition<?> owningBean)

Method Summary

Modifier and Type	Method	Description
void	close()
Object	getArgument(int index)	Provides method argument by index.
<T> T	getBean(Class<T> type)	Provides bean by type.
String	getProperty(String name)	Provides property by name.
Object	getThis()	Expressions that are evaluated in non-static contexts can reference "this".
ConfigurableExpressionEvaluationContext	withArguments(Object thisObject, Object[] args)	Set arguments passed to invoked method.
ConfigurableExpressionEvaluationContext	withBeanContext(BeanContext beanContext)	Set context in which expression is evaluated.
ConfigurableExpressionEvaluationContext	withOwningBean(BeanDefinition<?> beanDefinition)	Set bean owning evaluated expression.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.micronaut.context.expressions.ConfigurableExpressionEvaluationContext

withArguments

Constructor Details

DefaultExpressionEvaluationContext

public DefaultExpressionEvaluationContext()

DefaultExpressionEvaluationContext

public DefaultExpressionEvaluationContext(@Nullable
 @Nullable Object thisObject,
 @Nullable
 @Nullable Object[] args,
 @Nullable
 @Nullable BeanContext beanContext,
 @Nullable
 @Nullable BeanDefinition<?> owningBean)

Method Details

withArguments

public ConfigurableExpressionEvaluationContext withArguments(Object thisObject,
 Object[] args)

Description copied from interface: ConfigurableExpressionEvaluationContext

Set arguments passed to invoked method.

Specified by:

withArguments in interface ConfigurableExpressionEvaluationContext

Parameters:

thisObject - In the case of non-static methods the object that represents this object

args - method arguments

Returns:

evaluation context which arguments can be used in evaluation.

withOwningBean

public ConfigurableExpressionEvaluationContext withOwningBean(BeanDefinition<?> beanDefinition)

Description copied from interface: ConfigurableExpressionEvaluationContext

Set bean owning evaluated expression.

Specified by:

withOwningBean in interface ConfigurableExpressionEvaluationContext

Parameters:

beanDefinition - owning bean definition

Returns:

evaluation context aware of owning bean.

withBeanContext

public ConfigurableExpressionEvaluationContext withBeanContext(BeanContext beanContext)

Description copied from interface: ConfigurableExpressionEvaluationContext

Set context in which expression is evaluated.

Specified by:

withBeanContext in interface ConfigurableExpressionEvaluationContext

Parameters:

beanContext - bean context

Returns:

evaluation context aware of bean context.

getThis

public Object getThis()

Description copied from interface: ExpressionEvaluationContext

Expressions that are evaluated in non-static contexts can reference "this".

The object returned here is a reference to this.

Specified by:

getThis in interface ExpressionEvaluationContext

Returns:

The object that represents this.

getArgument

public Object getArgument(int index)

Description copied from interface: ExpressionEvaluationContext

Provides method argument by index.

Specified by:

getArgument in interface ExpressionEvaluationContext

Parameters:

index - argument index

Returns:

argument value

getProperty

public String getProperty(String name)

Description copied from interface: ExpressionEvaluationContext

Provides property by name.

Specified by:

getProperty in interface ExpressionEvaluationContext

Parameters:

name - property name

Returns:

property value or null

getBean

public <T> T getBean(Class<T> type)

Description copied from interface: ExpressionEvaluationContext

Provides bean by type.

Specified by:

getBean in interface ExpressionEvaluationContext

Type Parameters:

T - type of required bean

Parameters:

type - required bean class object

Returns:

bean instance

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Throws:

Exception