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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.serialization.queryformats;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.onap.aai.db.props.AAIProperties;
import org.onap.aai.exceptions.AAIException;
import org.onap.aai.introspection.Introspector;
import org.onap.aai.introspection.Loader;
import org.onap.aai.introspection.exceptions.AAIUnknownObjectException;
import org.onap.aai.serialization.db.DBSerializer;
import org.onap.aai.serialization.queryformats.exceptions.AAIFormatVertexException;
import org.onap.aai.serialization.queryformats.params.Depth;
import org.onap.aai.serialization.queryformats.params.NodesOnly;
import org.onap.aai.serialization.queryformats.utils.UrlBuilder;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
public class Resource extends MultiFormatMapper {
private final Loader loader;
private final DBSerializer serializer;
private final JsonParser parser;
private final UrlBuilder urlBuilder;
private final boolean includeUrl;
private final boolean nodesOnly;
private final int depth;
private Resource (Builder builder) {
this.parser = new JsonParser();
this.loader = builder.getLoader();
this.serializer = builder.getSerializer();
this.urlBuilder = builder.getUrlBuilder();
this.includeUrl = builder.isIncludeUrl();
this.nodesOnly = builder.isNodesOnly();
this.depth = builder.getDepth();
}
@Override
protected JsonObject getJsonFromVertex(Vertex v) throws AAIFormatVertexException {
JsonObject json = new JsonObject();
if (this.includeUrl) {
json.addProperty("url", this.urlBuilder.pathed(v));
}
json.add(v.<String>property(AAIProperties.NODE_TYPE)
.orElse(null), this.vertexToJsonObject(v));
return json;
}
protected JsonObject vertexToJsonObject(Vertex v) throws AAIFormatVertexException {
try {
final Introspector obj = getLoader().introspectorFromName(
v.<String>property(AAIProperties.NODE_TYPE)
.orElse(null)
);
final List<Vertex> wrapper = new ArrayList<>();
wrapper.add(v);
try {
getSerializer().dbToObject(wrapper, obj, this.depth, this.nodesOnly, "false");
} catch (AAIException | UnsupportedEncodingException e) {
throw new AAIFormatVertexException("Failed to format vertex - error while serializing: " + e.getMessage(), e);
}
final String json = obj.marshal(false);
return getParser().parse(json).getAsJsonObject();
} catch (AAIUnknownObjectException e) {
throw new AAIFormatVertexException("Failed to format vertex - unknown object", e);
}
}
@Override
public int parallelThreshold() {
return 20;
}
private Loader getLoader() { return loader; }
private DBSerializer getSerializer() { return serializer; }
private JsonParser getParser() { return parser; }
public static class Builder implements NodesOnly<Builder>, Depth<Builder> {
private final Loader loader;
private final DBSerializer serializer;
private final UrlBuilder urlBuilder;
private boolean includeUrl = false;
private boolean nodesOnly = false;
private int depth = 1;
public Builder(Loader loader, DBSerializer serializer, UrlBuilder urlBuilder) {
this.loader = loader;
this.serializer = serializer;
this.urlBuilder = urlBuilder;
}
protected Loader getLoader() {
return this.loader;
}
protected DBSerializer getSerializer() {
return this.serializer;
}
protected UrlBuilder getUrlBuilder() {
return this.urlBuilder;
}
public Builder includeUrl() {
this.includeUrl = true;
return this;
}
public Builder nodesOnly(Boolean nodesOnly) {
this.nodesOnly = nodesOnly;
return this;
}
public boolean isNodesOnly() {
return this.nodesOnly;
}
public Builder depth(Integer depth) {
this.depth = depth;
return this;
}
public int getDepth() {
return this.depth;
}
public boolean isIncludeUrl() {
return this.includeUrl;
}
public Resource build() {
return new Resource(this);
}
}
}
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