com.sun.jersey.server.impl.uri.rules.SubLocatorRule Maven / Gradle / Ivy
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package com.sun.jersey.server.impl.uri.rules;
import com.sun.jersey.api.container.ContainerException;
import com.sun.jersey.api.container.MappableContainerException;
import com.sun.jersey.api.uri.UriTemplate;
import com.sun.jersey.server.impl.inject.AbstractHttpContextInjectable;
import com.sun.jersey.spi.container.ContainerRequest;
import com.sun.jersey.spi.container.ContainerRequestFilter;
import com.sun.jersey.spi.container.ContainerResponseFilter;
import com.sun.jersey.spi.inject.Injectable;
import com.sun.jersey.spi.uri.rules.UriRule;
import com.sun.jersey.spi.uri.rules.UriRuleContext;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.List;
import javax.ws.rs.WebApplicationException;
/**
* The rule for accepting a sub-locator method.
*
* @author [email protected]
*/
public final class SubLocatorRule extends BaseRule {
private final List is;
private final Method m;
private final List requestFilters;
private final List responseFilters;
public SubLocatorRule(UriTemplate template,
Method m,
List is,
List requestFilters,
List responseFilters) {
super(template);
this.m = m;
this.is = AbstractHttpContextInjectable.transform(is);
this.requestFilters = requestFilters;
this.responseFilters = responseFilters;
}
public boolean accept(CharSequence path, Object resource, UriRuleContext context) {
// Set the template values
pushMatch(context);
// Invoke the sub-locator to get the sub-resource
resource = invokeSubLocator(resource, context);
// If null then no match
if (resource == null)
return false;
// Check if instance is a class
if (resource instanceof Class) {
// If so then get the instance of that class
resource = context.getResource((Class)resource);
}
context.pushResource(resource);
// Match sub-rules on the returned resource class
final Iterator matches = context.getRules(resource.getClass()).
match(path, context);
while(matches.hasNext())
if(matches.next().accept(path, resource, context))
return true;
return false;
}
private Object invokeSubLocator(Object resource, UriRuleContext context) {
// Push the response filters
context.pushContainerResponseFilters(responseFilters);
// Process the request filter
if (!requestFilters.isEmpty()) {
ContainerRequest containerRequest = context.getContainerRequest();
for (ContainerRequestFilter f : requestFilters) {
containerRequest = f.filter(containerRequest);
context.setContainerRequest(containerRequest);
}
}
// Invoke the sub-locator method
try {
if (is.size() == 0) {
return m.invoke(resource);
} else {
final Object[] params = new Object[is.size()];
int index = 0;
for (AbstractHttpContextInjectable i : is) {
params[index++] = i.getValue(context);
}
return m.invoke(resource, params);
}
} catch (InvocationTargetException e) {
// Propagate the target exception so it may be mapped to a response
throw new MappableContainerException(e.getTargetException());
} catch (IllegalAccessException e) {
throw new ContainerException(e);
} catch (WebApplicationException e) {
throw e;
} catch (RuntimeException e) {
throw new ContainerException("Exception injecting parameters for sub-locator method: " + m, e);
}
}
}