/*******************************************************************************
* Copyright 2013 SAP AG
*
* Licensed 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 com.sap.core.odata.core.ep.producer;
import java.io.IOException;
import java.io.Writer;
import com.sap.core.odata.api.edm.Edm;
import com.sap.core.odata.api.edm.EdmEntitySetInfo;
import com.sap.core.odata.api.edm.EdmServiceMetadata;
import com.sap.core.odata.api.ep.EntityProviderException;
import com.sap.core.odata.api.exception.ODataException;
import com.sap.core.odata.core.ep.util.FormatJson;
import com.sap.core.odata.core.ep.util.JsonStreamWriter;
/**
* Writes the OData service document in JSON.
* @author SAP AG
*/
public class JsonServiceDocumentProducer {
public static void writeServiceDocument(final Writer writer, final Edm edm) throws EntityProviderException {
final EdmServiceMetadata serviceMetadata = edm.getServiceMetadata();
JsonStreamWriter jsonStreamWriter = new JsonStreamWriter(writer);
try {
jsonStreamWriter.beginObject()
.name(FormatJson.D)
.beginObject()
.name(FormatJson.ENTITY_SETS)
.beginArray();
boolean first = true;
for (EdmEntitySetInfo info : serviceMetadata.getEntitySetInfos()) {
if (first) {
first = false;
} else {
jsonStreamWriter.separator();
}
jsonStreamWriter.stringValue(info.getEntitySetUri().toASCIIString());
}
jsonStreamWriter.endArray()
.endObject()
.endObject();
} catch (final IOException e) {
throw new EntityProviderException(EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
} catch (final ODataException e) {
throw new EntityProviderException(EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
}
}
}