lib/server-tecsvc/src/main/java/org/apache/olingo/server/tecsvc/processor/TechnicalProcessor.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.olingo.server.tecsvc.processor;


import java.util.List;
import java.util.Locale;

import org.apache.olingo.commons.api.edm.EdmEntitySet;
import org.apache.olingo.commons.api.http.HttpStatusCode;
import org.apache.olingo.server.api.OData;
import org.apache.olingo.server.api.ODataApplicationException;
import org.apache.olingo.server.api.ServiceMetadata;
import org.apache.olingo.server.api.processor.Processor;
import org.apache.olingo.server.api.uri.UriInfoResource;
import org.apache.olingo.server.api.uri.UriResource;
import org.apache.olingo.server.api.uri.UriResourceEntitySet;
import org.apache.olingo.server.tecsvc.data.DataProvider;

/**
 * Technical Processor base.
 */
public abstract class TechnicalProcessor implements Processor {

  protected OData odata;
  protected DataProvider dataProvider;

  protected TechnicalProcessor(final DataProvider dataProvider) {
    this.dataProvider = dataProvider;
  }

  @Override
  public void init(final OData odata, final ServiceMetadata serviceMetadata) {
    this.odata = odata;
  }

  protected EdmEntitySet getEdmEntitySet(final UriInfoResource uriInfo) throws ODataApplicationException {
    final List<UriResource> resourcePaths = uriInfo.getUriResourceParts();
    // first must be entity set
    if (!(resourcePaths.get(0) instanceof UriResourceEntitySet)) {
      throw new ODataApplicationException("Invalid resource type.",
          HttpStatusCode.NOT_IMPLEMENTED.getStatusCode(), Locale.ROOT);
    }

    final UriResourceEntitySet uriResource = (UriResourceEntitySet) resourcePaths.get(0);
    if (uriResource.getTypeFilterOnCollection() != null || uriResource.getTypeFilterOnEntry() != null) {
      throw new ODataApplicationException("Type filters are not supported.",
          HttpStatusCode.NOT_IMPLEMENTED.getStatusCode(), Locale.ROOT);
    }
    return uriResource.getEntitySet();
  }

  protected void validateOptions(final UriInfoResource uriInfo) throws ODataApplicationException {
    if (uriInfo.getCountOption() != null
        || !uriInfo.getCustomQueryOptions().isEmpty()
        || uriInfo.getFilterOption() != null
        || uriInfo.getIdOption() != null
        || uriInfo.getOrderByOption() != null
        || uriInfo.getSearchOption() != null
        || uriInfo.getSkipOption() != null
        || uriInfo.getSkipTokenOption() != null
        || uriInfo.getTopOption() != null) {
      throw new ODataApplicationException("Not all of the specified options are supported.",
          HttpStatusCode.NOT_IMPLEMENTED.getStatusCode(), Locale.ROOT);
    }
  }
}