org.odata4j.jersey.producer.resources.ODataProducerProvider Maven / Gradle / Ivy

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package org.odata4j.jersey.producer.resources;

import java.util.Properties;

import javax.ws.rs.core.Context;
import javax.ws.rs.ext.Provider;

import org.odata4j.producer.ODataProducer;
import org.odata4j.producer.resources.DefaultODataProducerProvider;

import com.sun.jersey.api.core.ResourceConfig;

/**
 * Jersey-specific OData producer provider.
 *
 * This provider allows specifying a factory as part of the container's deployment
 * descriptor (web.xml). The factory is used to create an OData producer instance.
 * 
 * {@code
 * 
 *   odata4j.producerfactory
 *   ... full qualified class name ...
 * 
 * }
 * 
 */
@Provider
public class ODataProducerProvider extends DefaultODataProducerProvider {

  @Context
  private ResourceConfig resourceConfig;

  @Override
  protected ODataProducer createInstanceFromFactoryInContainerSpecificSetting() {
    if (resourceConfig != null && resourceConfig.getProperty(FACTORY_PROPNAME) != null) {
      String factoryTypeName = (String) resourceConfig.getProperty(FACTORY_PROPNAME);
      log("Creating producer from factory in resource config: " + factoryTypeName);
      Properties props = new Properties();
      props.putAll(resourceConfig.getProperties());
      return newProducerFromFactory(factoryTypeName, props);
    }
    return null;
  }
}