| /******************************************************************************* |
| * 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.IOException; |
| import java.io.Writer; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.olingo.odata2.api.commons.InlineCount; |
| import org.apache.olingo.odata2.api.ep.EntityProviderException; |
| import org.apache.olingo.odata2.api.ep.EntityProviderWriteProperties; |
| import org.apache.olingo.odata2.core.ep.EntityProviderProducerException; |
| import org.apache.olingo.odata2.core.ep.aggregator.EntityInfoAggregator; |
| import org.apache.olingo.odata2.core.ep.util.FormatJson; |
| import org.apache.olingo.odata2.core.ep.util.JsonStreamWriter; |
| |
| /** |
| * Producer for writing a link collection in JSON. |
| * |
| */ |
| public class JsonLinksEntityProducer { |
| |
| private final EntityProviderWriteProperties properties; |
| |
| public JsonLinksEntityProducer(final EntityProviderWriteProperties properties) throws EntityProviderException { |
| this.properties = properties == null ? EntityProviderWriteProperties.serviceRoot(null).build() : properties; |
| } |
| |
| public void append(final Writer writer, final EntityInfoAggregator entityInfo, final List<Map<String, Object>> data) |
| throws EntityProviderException { |
| JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer); |
| |
| try { |
| if (!properties.isOmitJsonWrapper()) { |
| jsonStreamWriter.beginObject() |
| .name(FormatJson.D); |
| } |
| |
| if (properties.getInlineCountType() == InlineCount.ALLPAGES) { |
| final int inlineCount = properties.getInlineCount() == null ? 0 : properties.getInlineCount(); |
| jsonStreamWriter.beginObject() |
| .namedStringValueRaw(FormatJson.COUNT, String.valueOf(inlineCount)).separator() |
| .name(FormatJson.RESULTS); |
| } |
| |
| jsonStreamWriter.beginArray(); |
| final String serviceRoot = properties.getServiceRoot().toASCIIString(); |
| boolean first = true; |
| for (final Map<String, Object> entryData : data) { |
| if (first) { |
| first = false; |
| } else { |
| jsonStreamWriter.separator(); |
| } |
| JsonLinkEntityProducer.appendUri(jsonStreamWriter, |
| (serviceRoot == null ? "" : serviceRoot) |
| + AtomEntryEntityProducer.createSelfLink(entityInfo, entryData, null)); |
| } |
| jsonStreamWriter.endArray(); |
| |
| if (properties.getInlineCountType() == InlineCount.ALLPAGES) { |
| jsonStreamWriter.endObject(); |
| } |
| if (!properties.isOmitJsonWrapper()) { |
| jsonStreamWriter.endObject(); |
| } |
| } catch (final IOException e) { |
| throw new EntityProviderProducerException(EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass() |
| .getSimpleName()), e); |
| } |
| } |
| } |