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package com.sun.jersey.server.impl.container.filter;
import com.sun.jersey.api.core.ResourceConfig;
import com.sun.jersey.api.model.AbstractMethod;
import com.sun.jersey.core.spi.component.ProviderServices;
import com.sun.jersey.spi.container.ContainerRequestFilter;
import com.sun.jersey.spi.container.ContainerResponseFilter;
import com.sun.jersey.spi.container.ResourceFilter;
import com.sun.jersey.spi.container.ResourceFilterFactory;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.logging.Logger;
/**
*
* @author Paul.Sandoz@Sun.Com
*/
public final class FilterFactory {
private static final Logger LOGGER = Logger.getLogger(FilterFactory.class.getName());
private final ProviderServices providerServices;
private final List<ContainerRequestFilter> requestFilters = new LinkedList<ContainerRequestFilter>();
private final List<ContainerResponseFilter> responseFilters = new LinkedList<ContainerResponseFilter>();
private final List<ResourceFilterFactory> resourceFilterFactories = new LinkedList<ResourceFilterFactory>();
public FilterFactory(ProviderServices providerServices) {
this.providerServices = providerServices;
}
public void init(ResourceConfig resourceConfig) {
// Initiate request filters
requestFilters.addAll(
getFilters(ContainerRequestFilter.class,resourceConfig.getContainerRequestFilters())
);
requestFilters.addAll(providerServices.getServices(ContainerRequestFilter.class));
// Initiate response filters
responseFilters.addAll(
getFilters(ContainerResponseFilter.class, resourceConfig.getContainerResponseFilters())
);
responseFilters.addAll(providerServices.getServices(ContainerResponseFilter.class));
// Initiate resource filter factories
resourceFilterFactories.addAll(
getFilters(ResourceFilterFactory.class, resourceConfig.getResourceFilterFactories())
);
resourceFilterFactories.addAll(providerServices.getServices(ResourceFilterFactory.class));
resourceFilterFactories.add(new AnnotationResourceFilterFactory(this));
}
public List<ContainerRequestFilter> getRequestFilters() {
return requestFilters;
}
public List<ContainerResponseFilter> getResponseFilters() {
return responseFilters;
}
public List<ResourceFilter> getResourceFilters(AbstractMethod am) {
List<ResourceFilter> resourceFilters = new LinkedList<ResourceFilter>();
for (ResourceFilterFactory rff : resourceFilterFactories) {
List<ResourceFilter> rfs = rff.create(am);
if (rfs != null)
resourceFilters.addAll(rfs);
}
return resourceFilters;
}
public List<ResourceFilter> getResourceFilters(Class<? extends ResourceFilter>[] classes) {
if (classes == null || classes.length == 0)
return Collections.EMPTY_LIST;
return providerServices.getInstances(ResourceFilter.class, classes);
}
public static List<ContainerRequestFilter> getRequestFilters(List<ResourceFilter> resourceFilters) {
final List<ContainerRequestFilter> filters = new LinkedList<ContainerRequestFilter>();
for (ResourceFilter rf : resourceFilters) {
ContainerRequestFilter crf = rf.getRequestFilter();
if (crf != null)
filters.add(crf);
}
return filters;
}
public static List<ContainerResponseFilter> getResponseFilters(List<ResourceFilter> resourceFilters) {
final List<ContainerResponseFilter> filters = new LinkedList<ContainerResponseFilter>();
for (ResourceFilter rf : resourceFilters) {
ContainerResponseFilter crf = rf.getResponseFilter();
if (crf != null)
filters.add(crf);
}
return filters;
}
private <T> List<T> getFilters(Class<T> c, List<?> l) {
List<T> f = new LinkedList<T>();
for (Object o : l) {
if (o instanceof String) {
f.addAll(providerServices.getInstances(c,
ResourceConfig.getElements(new String[] {(String)o}, ResourceConfig.COMMON_DELIMITERS)));
} else if (o instanceof String[]) {
f.addAll(providerServices.getInstances(c,
ResourceConfig.getElements((String[])o, ResourceConfig.COMMON_DELIMITERS)));
} else if (c.isInstance(o)) {
f.add(c.cast(o));
} else if (o instanceof Class) {
Class fc = (Class)o;
if (c.isAssignableFrom(fc)) {
f.addAll(providerServices.getInstances(c, new Class[] {fc}));
} else {
LOGGER.severe("The filter, of type" +
o.getClass().getName() +
", MUST be of the type Class<? extends" + c.getName() + ">" +
". The filter is ignored.");
}
} else {
LOGGER.severe("The filter, of type" +
o.getClass().getName() +
", MUST be of the type String, String[], Class<? extends " + c.getName() + ">, or an instance of " + c.getName() +
". The filter is ignored.");
}
}
providerServices.getComponentProviderFactory().injectOnProviderInstances(f);
return f;
}
}