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package org.glassfish.jersey.linking;
import javax.el.BeanELResolver;
import javax.el.CompositeELResolver;
import javax.el.ELContext;
import javax.el.ELResolver;
import javax.el.FunctionMapper;
import javax.el.VariableMapper;
/**
* An ELContext that encapsulates the response information for use by the
* expression evaluator.
*
*
* @author Mark Hadley
* @author Gerard Davison (gerard.davison at oracle.com)
*/
class LinkELContext extends ELContext {
private Object entity;
private Object resource;
private Object instance;
/**
* Convenience constructor for the common case where a context where
* the entity and instance are the same. Equivalent to
* <code>LinkELContext(entity, resource, entity)</code>
*
* @param entity
* @param resource
*/
public LinkELContext(Object entity, Object resource) {
this.entity = entity;
this.resource = resource;
this.instance = entity;
}
/**
* Construct a new context
* @param entity the entity returned from the resource method
* @param resource the resource class instance that returned the entity
* @param instance the instance that contains the entity, e.g. the value of
* a field within an entity class.
*/
public LinkELContext(Object entity, Object resource, Object instance) {
this.entity = entity;
this.resource = resource;
this.instance = instance;
}
@Override
public ELResolver getELResolver() {
CompositeELResolver resolver = new CompositeELResolver();
resolver.add(new ResponseContextResolver(entity, resource, instance));
resolver.add(new BeanELResolver(true));
return resolver;
}
@Override
public FunctionMapper getFunctionMapper() {
return null;
}
@Override
public VariableMapper getVariableMapper() {
return null;
}
}