Package org.apache.camel.model.language

Class MethodCallExpression

java.lang.Object

org.apache.camel.model.language.ExpressionDefinition

org.apache.camel.model.language.TypedExpressionDefinition

org.apache.camel.model.language.MethodCallExpression

All Implemented Interfaces:

org.apache.camel.Expression, org.apache.camel.ExpressionFactory, HasExpressionType, org.apache.camel.Predicate, org.apache.camel.PredicateFactory, org.apache.camel.spi.ExpressionFactoryAware, org.apache.camel.spi.PredicateFactoryAware

@Metadata(firstVersion="1.3.0",
          label="language,core,java",
          title="Bean Method")
public class MethodCallExpression
extends TypedExpressionDefinition

Calls a Java bean method.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MethodCallExpression.Builder	Builder is a specific builder for MethodCallExpression.

Nested classes/interfaces inherited from class org.apache.camel.model.language.TypedExpressionDefinition

TypedExpressionDefinition.AbstractBuilder<T extends TypedExpressionDefinition.AbstractBuilder<T,E>,E extends TypedExpressionDefinition>

Constructor Summary

Constructors

Constructor	Description
MethodCallExpression()
MethodCallExpression(Class<?> type)
MethodCallExpression(Class<?> type, String method)
MethodCallExpression(Object instance)
MethodCallExpression(Object instance, String method)
MethodCallExpression(String beanName)
MethodCallExpression(String beanName, String method)

Method Summary

Modifier and Type	Method	Description
Class<?>	getBeanType()
String	getBeanTypeName()
Object	getInstance()
String	getLanguage()
String	getMethod()
String	getRef()
String	getScope()
void	setBeanType(Class<?> beanType)
void	setBeanTypeName(String beanTypeName)	Class name (fully qualified) of the bean to use Will lookup in registry and if there is a single instance of the same type, then the existing bean is used, otherwise a new bean is created (requires a default no-arg constructor).
void	setInstance(Object instance)
void	setMethod(String method)	Name of method to call
void	setRef(String ref)	Reference to an existing bean (bean id) to lookup in the registry
void	setScope(String scope)	Scope of bean.
String	toString()

Methods inherited from class org.apache.camel.model.language.TypedExpressionDefinition

getResultType, getResultTypeName, setResultType, setResultTypeName

Methods inherited from class org.apache.camel.model.language.ExpressionDefinition

createExpression, createPredicate, evaluate, getExpression, getExpressionFactory, getExpressionType, getExpressionValue, getId, getLabel, getLabel, getPredicate, getPredicateFactory, getTrim, init, initPredicate, matches, setExpression, setExpressionType, setExpressionValue, setId, setTrim

Methods inherited from class java.lang.Object

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

Constructor Details

MethodCallExpression

public MethodCallExpression()

MethodCallExpression

public MethodCallExpression(String beanName)

MethodCallExpression

public MethodCallExpression(String beanName,
 String method)

MethodCallExpression

public MethodCallExpression(Object instance)

MethodCallExpression

public MethodCallExpression(Object instance,
 String method)

MethodCallExpression

public MethodCallExpression(Class<?> type)

MethodCallExpression

public MethodCallExpression(Class<?> type,
 String method)

Method Details

getLanguage

public String getLanguage()

Overrides:

getLanguage in class ExpressionDefinition

getRef

public String getRef()

setRef

public void setRef(String ref)

Reference to an existing bean (bean id) to lookup in the registry

getMethod

public String getMethod()

setMethod

public void setMethod(String method)

Name of method to call

getBeanType

public Class<?> getBeanType()

setBeanType

public void setBeanType(Class<?> beanType)

getBeanTypeName

public String getBeanTypeName()

setBeanTypeName

public void setBeanTypeName(String beanTypeName)

Class name (fully qualified) of the bean to use Will lookup in registry and if there is a single instance of the same type, then the existing bean is used, otherwise a new bean is created (requires a default no-arg constructor).

getScope

public String getScope()

setScope

public void setScope(String scope)

Scope of bean. When using singleton scope (default) the bean is created or looked up only once and reused for the lifetime of the endpoint. The bean should be thread-safe in case concurrent threads is calling the bean at the same time. When using request scope the bean is created or looked up once per request (exchange). This can be used if you want to store state on a bean while processing a request and you want to call the same bean instance multiple times while processing the request. The bean does not have to be thread-safe as the instance is only called from the same request. When using prototype scope, then the bean will be looked up or created per call. However in case of lookup then this is delegated to the bean registry such as Spring or CDI (if in use), which depends on their configuration can act as either singleton or prototype scope. So when using prototype scope then this depends on the bean registry implementation.

getInstance

public Object getInstance()

setInstance

public void setInstance(Object instance)

toString

public String toString()

Overrides:

toString in class ExpressionDefinition