Package org.apache.camel.support

Class LanguageSupport

java.lang.Object

org.apache.camel.support.LanguageSupport

All Implemented Interfaces:

org.apache.camel.CamelContextAware, org.apache.camel.IsSingleton, org.apache.camel.spi.Language

Direct Known Subclasses:

SingleInputLanguageSupport, TypedLanguageSupport

public abstract class LanguageSupport
extends Object
implements org.apache.camel.spi.Language, org.apache.camel.IsSingleton, org.apache.camel.CamelContextAware

Base language for Language implementations.

Field Summary

Fields

Modifier and Type	Field	Description
static String	RESOURCE

Constructor Summary

Constructors

Constructor	Description
LanguageSupport()

Method Summary

Modifier and Type	Method	Description
org.apache.camel.CamelContext	getCamelContext()
static boolean	hasSimpleFunction(String expression)	Does the expression include a simple function.
protected boolean	isDynamicResource(String expression)	Does the expression refer to a dynamic resource which uses simple functions.
boolean	isSingleton()
protected boolean	isStaticResource(String expression)	Does the expression refer to a static resource.
protected String	loadResource(String expression)	Loads the resource if the given expression is referring to an external resource by using the syntax resource:scheme:uri.
protected <T> T	property(Class<T> type, Object[] properties, int index, Object defaultValue)	Converts the property to the expected type
void	setCamelContext(org.apache.camel.CamelContext camelContext)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.camel.spi.Language

createExpression, createExpression, createPredicate, createPredicate

Field Detail

RESOURCE

public static final String RESOURCE

See Also:

Constant Field Values

Constructor Detail

LanguageSupport

public LanguageSupport()

Method Detail

getCamelContext

public org.apache.camel.CamelContext getCamelContext()

Specified by:

getCamelContext in interface org.apache.camel.CamelContextAware

setCamelContext

public void setCamelContext(org.apache.camel.CamelContext camelContext)

Specified by:

setCamelContext in interface org.apache.camel.CamelContextAware

isSingleton

public boolean isSingleton()

Specified by:

isSingleton in interface org.apache.camel.IsSingleton

loadResource

protected String loadResource(String expression)
                       throws org.apache.camel.ExpressionIllegalSyntaxException

Loads the resource if the given expression is referring to an external resource by using the syntax resource:scheme:uri. If the expression is not referring to a resource, then its returned as is.

For example resource:classpath:mygroovy.groovy to refer to a groovy script on the classpath.

Parameters:

expression - the expression

Returns:

the expression

Throws:

org.apache.camel.ExpressionIllegalSyntaxException - is thrown if error loading the resource

isStaticResource

protected boolean isStaticResource(String expression)

Does the expression refer to a static resource.

isDynamicResource

protected boolean isDynamicResource(String expression)

Does the expression refer to a dynamic resource which uses simple functions.

hasSimpleFunction

public static boolean hasSimpleFunction(String expression)

Does the expression include a simple function.

Parameters:

expression - the expression

Returns:

true if one or more simple function is included in the expression

property

protected <T> T property(Class<T> type,
                         Object[] properties,
                         int index,
                         Object defaultValue)

Converts the property to the expected type

Parameters:

type - the expected type

properties - the options (optimized as object array with hardcoded positions for properties)

index - index of the property

defaultValue - optional default value

Returns:

the value converted to the expected type