| /******************************************************************************* |
| * 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.odata2.client.core; |
| |
| import java.io.InputStream; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.olingo.odata2.api.edm.Edm; |
| import org.apache.olingo.odata2.api.edm.EdmException; |
| import org.apache.olingo.odata2.api.ep.EntityProviderException; |
| import org.apache.olingo.odata2.api.exception.ODataNotAcceptableException; |
| import org.apache.olingo.odata2.api.uri.PathSegment; |
| import org.apache.olingo.odata2.api.uri.UriInfo; |
| import org.apache.olingo.odata2.api.uri.UriNotMatchingException; |
| import org.apache.olingo.odata2.api.uri.UriSyntaxException; |
| import org.apache.olingo.odata2.client.api.ODataClient; |
| import org.apache.olingo.odata2.client.api.edm.EdmDataServices; |
| import org.apache.olingo.odata2.client.api.ep.ContentTypeBasedDeserializer; |
| import org.apache.olingo.odata2.client.api.ep.ContentTypeBasedSerializer; |
| import org.apache.olingo.odata2.client.api.ep.DeserializerMetadataProviderInterface; |
| import org.apache.olingo.odata2.client.api.uri.EdmURIBuilder; |
| import org.apache.olingo.odata2.client.api.uri.URIBuilder; |
| import org.apache.olingo.odata2.client.core.ep.AtomSerializerDeserializer; |
| import org.apache.olingo.odata2.client.core.ep.JsonSerializerDeserializer; |
| import org.apache.olingo.odata2.client.core.ep.deserializer.XmlMetadataDeserializer; |
| import org.apache.olingo.odata2.client.core.uri.EdmURIBuilderImpl; |
| import org.apache.olingo.odata2.client.core.uri.URIBuilderImpl; |
| import org.apache.olingo.odata2.core.ODataPathSegmentImpl; |
| import org.apache.olingo.odata2.core.commons.ContentType; |
| import org.apache.olingo.odata2.core.uri.UriParserImpl; |
| |
| /** |
| * Implementation class to obtain serializers and deserializers based on content type |
| * |
| */ |
| public class ODataClientImpl extends ODataClient implements DeserializerMetadataProviderInterface{ |
| |
| private static final String AMP = "&"; |
| private static final String EQUAL = "="; |
| private static final String QUESTIONMARK = "\\?"; |
| private static final String SLASH = "/"; |
| |
| @Override |
| public ContentTypeBasedSerializer createSerializer(final String contentType) |
| throws EntityProviderException { |
| return createSerializer(ContentType.createAsCustom(contentType)); |
| |
| } |
| |
| private ContentTypeBasedSerializer createSerializer(ContentType contentType) |
| throws EntityProviderException { |
| try { |
| switch (contentType.getODataFormat()) { |
| case ATOM: |
| case XML: |
| return new AtomSerializerDeserializer(contentType.getODataFormat()); |
| case JSON: |
| return new JsonSerializerDeserializer(); |
| default: |
| throw new ODataNotAcceptableException(ODataNotAcceptableException.NOT_SUPPORTED_CONTENT_TYPE |
| .addContent(contentType)); |
| } |
| } catch (final ODataNotAcceptableException e) { |
| throw new EntityProviderException(EntityProviderException.COMMON, e); |
| } |
| } |
| |
| @Override |
| public ContentTypeBasedDeserializer createDeserializer(final String contentType) |
| throws EntityProviderException { |
| return createDeserializer(ContentType.createAsCustom(contentType)); |
| |
| } |
| |
| private ContentTypeBasedDeserializer createDeserializer(ContentType contentType) |
| throws EntityProviderException { |
| try { |
| switch (contentType.getODataFormat()) { |
| case ATOM: |
| case XML: |
| return new AtomSerializerDeserializer(contentType.getODataFormat()); |
| case JSON: |
| return new JsonSerializerDeserializer(); |
| default: |
| throw new ODataNotAcceptableException(ODataNotAcceptableException.NOT_SUPPORTED_CONTENT_TYPE |
| .addContent(contentType)); |
| } |
| } catch (final ODataNotAcceptableException e) { |
| throw new EntityProviderException(EntityProviderException.COMMON, e); |
| } |
| } |
| |
| @Override |
| public EdmDataServices readMetadata(InputStream content, boolean validate) |
| throws EntityProviderException, EdmException { |
| return new XmlMetadataDeserializer().readMetadata(content, validate); |
| } |
| |
| @Override |
| public UriInfo parseUri(Edm edm, List<PathSegment> pathSegments, Map<String, List<String>> queryParameters) |
| throws UriSyntaxException, UriNotMatchingException, EdmException { |
| return new UriParserImpl(edm).parseAll(pathSegments, queryParameters); |
| } |
| |
| @Override |
| public UriInfo parseUri(Edm edm, String uri) throws UriSyntaxException, UriNotMatchingException, EdmException { |
| final String[] path = uri.split(QUESTIONMARK, -1); |
| if (path.length > 2) { |
| throw new UriSyntaxException(UriSyntaxException.URISYNTAX); |
| } |
| |
| final List<PathSegment> pathSegments = getPathSegments(path[0]); |
| |
| Map<String, List<String>> queryParameters; |
| if (path.length == 2) { |
| queryParameters = getQueryParameters(unescape(path[1])); |
| } else { |
| queryParameters = new HashMap<String, List<String>>(); |
| } |
| |
| return new UriParserImpl(edm).parseAll(pathSegments, queryParameters); |
| } |
| /** |
| * Fetch query parameters |
| * @param uri |
| * @return |
| */ |
| private Map<String, List<String>> getQueryParameters(final String uri) { |
| Map<String, List<String>> allQueryParameters = new HashMap<String, List<String>>(); |
| |
| for (final String option : uri.split(AMP)) { |
| final String[] keyAndValue = option.split(EQUAL); |
| List<String> list = allQueryParameters.containsKey(keyAndValue[0]) ? |
| allQueryParameters.get(keyAndValue[0]) : new LinkedList<String>(); |
| |
| list.add(keyAndValue.length == 2 ? keyAndValue[1] : ""); |
| |
| allQueryParameters.put(keyAndValue[0], list); |
| } |
| |
| return allQueryParameters; |
| } |
| /** |
| * Fetch path segments |
| * @param uri |
| * @return |
| * @throws UriSyntaxException |
| */ |
| private List<PathSegment> getPathSegments(final String uri) throws UriSyntaxException { |
| List<PathSegment> pathSegments = new ArrayList<PathSegment>(); |
| for (final String segment : uri.split(SLASH, -1)) { |
| final String unescapedSegment = unescape(segment); |
| PathSegment oDataSegment = new ODataPathSegmentImpl(unescapedSegment, null); |
| pathSegments.add(oDataSegment); |
| } |
| return pathSegments; |
| } |
| |
| private String unescape(final String s) throws UriSyntaxException { |
| try { |
| return new URI(s).getPath(); |
| } catch (URISyntaxException e) { |
| throw new UriSyntaxException(UriSyntaxException.NOTEXT, e); |
| } |
| } |
| |
| |
| @Override |
| public EdmURIBuilder edmUriBuilder(String serviceRoot) { |
| return new EdmURIBuilderImpl(serviceRoot); |
| } |
| |
| @Override |
| public URIBuilder uriBuilder(String serviceRoot) { |
| return new URIBuilderImpl(serviceRoot); |
| } |
| } |