| /******************************************************************************* |
| * 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.core.ep.producer; |
| |
| import java.io.Writer; |
| import java.util.List; |
| |
| import javax.xml.stream.FactoryConfigurationError; |
| import javax.xml.stream.XMLStreamException; |
| import javax.xml.stream.XMLStreamWriter; |
| |
| import org.apache.olingo.odata2.api.edm.Edm; |
| import org.apache.olingo.odata2.api.edm.EdmEntitySetInfo; |
| import org.apache.olingo.odata2.api.edm.EdmException; |
| import org.apache.olingo.odata2.api.edm.EdmServiceMetadata; |
| import org.apache.olingo.odata2.api.ep.EntityProviderException; |
| import org.apache.olingo.odata2.api.exception.ODataException; |
| import org.apache.olingo.odata2.core.commons.ContentType; |
| import org.apache.olingo.odata2.core.commons.XmlHelper; |
| import org.apache.olingo.odata2.core.ep.EntityProviderProducerException; |
| import org.apache.olingo.odata2.core.ep.util.FormatXml; |
| |
| /** |
| * Writes the OData service document in XML. |
| * |
| */ |
| public class AtomServiceDocumentProducer { |
| |
| private static final String DEFAULT_CHARSET = ContentType.CHARSET_UTF_8; |
| private static final String XML_VERSION = "1.0"; |
| private final Edm edm; |
| private final String serviceRoot; |
| |
| public AtomServiceDocumentProducer(final Edm edm, final String serviceRoot) { |
| this.edm = edm; |
| this.serviceRoot = serviceRoot; |
| } |
| |
| public void writeServiceDocument(final Writer writer) throws EntityProviderException { |
| |
| EdmServiceMetadata serviceMetadata = edm.getServiceMetadata(); |
| |
| try { |
| XMLStreamWriter xmlStreamWriter = XmlHelper.getXMLOutputFactory().createXMLStreamWriter(writer); |
| |
| xmlStreamWriter.writeStartDocument(DEFAULT_CHARSET, XML_VERSION); |
| xmlStreamWriter.setPrefix(Edm.PREFIX_XML, Edm.NAMESPACE_XML_1998); |
| xmlStreamWriter.setPrefix(Edm.PREFIX_ATOM, Edm.NAMESPACE_ATOM_2005); |
| xmlStreamWriter.setDefaultNamespace(Edm.NAMESPACE_APP_2007); |
| |
| xmlStreamWriter.writeStartElement(FormatXml.APP_SERVICE); |
| xmlStreamWriter.writeAttribute(Edm.PREFIX_XML, Edm.NAMESPACE_XML_1998, FormatXml.XML_BASE, serviceRoot); |
| xmlStreamWriter.writeDefaultNamespace(Edm.NAMESPACE_APP_2007); |
| xmlStreamWriter.writeNamespace(Edm.PREFIX_ATOM, Edm.NAMESPACE_ATOM_2005); |
| |
| xmlStreamWriter.writeStartElement(FormatXml.APP_WORKSPACE); |
| xmlStreamWriter.writeStartElement(Edm.NAMESPACE_ATOM_2005, FormatXml.ATOM_TITLE); |
| xmlStreamWriter.writeCharacters(FormatXml.ATOM_TITLE_DEFAULT); |
| xmlStreamWriter.writeEndElement(); |
| |
| List<EdmEntitySetInfo> entitySetInfos = serviceMetadata.getEntitySetInfos(); |
| for (EdmEntitySetInfo info : entitySetInfos) { |
| xmlStreamWriter.writeStartElement(FormatXml.APP_COLLECTION); |
| xmlStreamWriter.writeAttribute(FormatXml.ATOM_HREF, info.getEntitySetUri().toASCIIString()); |
| xmlStreamWriter.writeStartElement(Edm.NAMESPACE_ATOM_2005, FormatXml.ATOM_TITLE); |
| xmlStreamWriter.writeCharacters(info.getEntitySetName()); |
| xmlStreamWriter.writeEndElement(); |
| xmlStreamWriter.writeEndElement(); |
| } |
| |
| xmlStreamWriter.writeEndElement(); |
| xmlStreamWriter.writeEndElement(); |
| xmlStreamWriter.writeEndDocument(); |
| |
| xmlStreamWriter.flush(); |
| } catch (FactoryConfigurationError e) { |
| throw new EntityProviderProducerException(EntityProviderException.COMMON, e); |
| } catch (XMLStreamException e) { |
| throw new EntityProviderProducerException(EntityProviderException.COMMON, e); |
| } catch (EdmException e) { |
| throw new EntityProviderProducerException(e.getMessageReference(), e); |
| } catch (ODataException e) { |
| throw new EntityProviderProducerException(EntityProviderException.COMMON, e); |
| } |
| } |
| } |