diff options
Diffstat (limited to 'verigraph/src/it/polito/verigraph/deserializer')
4 files changed, 264 insertions, 0 deletions
diff --git a/verigraph/src/it/polito/verigraph/deserializer/ConfigurationCustomDeserializer.java b/verigraph/src/it/polito/verigraph/deserializer/ConfigurationCustomDeserializer.java new file mode 100644 index 0000000..e91a53b --- /dev/null +++ b/verigraph/src/it/polito/verigraph/deserializer/ConfigurationCustomDeserializer.java @@ -0,0 +1,38 @@ +/******************************************************************************* + * Copyright (c) 2017 Politecnico di Torino and others. + * + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Apache License, Version 2.0 + * which accompanies this distribution, and is available at + * http://www.apache.org/licenses/LICENSE-2.0 + *******************************************************************************/ +package it.polito.verigraph.deserializer; + +import java.io.IOException; + +import com.fasterxml.jackson.core.JsonParser; +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.databind.DeserializationContext; +import com.fasterxml.jackson.databind.JsonDeserializer; +import com.fasterxml.jackson.databind.JsonNode; + +import it.polito.verigraph.exception.InternalServerErrorException; +import it.polito.verigraph.model.Configuration; + +public class ConfigurationCustomDeserializer extends JsonDeserializer<Configuration> { + + @Override + public Configuration deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, + JsonProcessingException { + try { + JsonNode root = jp.getCodec().readTree(jp); + return new Configuration("", "", root); + } + catch (JsonProcessingException e) { + throw new InternalServerErrorException("Error parsing configuration: " + e.getMessage()); + } + catch (IOException e) { + throw new InternalServerErrorException("I/O error parsing configuration: " + e.getMessage()); + } + } +}
\ No newline at end of file diff --git a/verigraph/src/it/polito/verigraph/deserializer/GraphCustomDeserializer.java b/verigraph/src/it/polito/verigraph/deserializer/GraphCustomDeserializer.java new file mode 100644 index 0000000..19245c2 --- /dev/null +++ b/verigraph/src/it/polito/verigraph/deserializer/GraphCustomDeserializer.java @@ -0,0 +1,86 @@ +/******************************************************************************* + * Copyright (c) 2017 Politecnico di Torino and others. + * + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Apache License, Version 2.0 + * which accompanies this distribution, and is available at + * http://www.apache.org/licenses/LICENSE-2.0 + *******************************************************************************/ +package it.polito.verigraph.deserializer; + +import java.io.IOException; +import java.util.List; +import java.util.Map; + +import com.fasterxml.jackson.core.JsonParseException; +import com.fasterxml.jackson.core.JsonParser; +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.databind.DeserializationContext; +import com.fasterxml.jackson.databind.JsonDeserializer; +import com.fasterxml.jackson.databind.JsonMappingException; +import com.fasterxml.jackson.databind.JsonNode; +import com.fasterxml.jackson.databind.ObjectMapper; +import com.fasterxml.jackson.databind.type.TypeFactory; + +import it.polito.verigraph.exception.BadRequestException; +import it.polito.verigraph.exception.InternalServerErrorException; +import it.polito.verigraph.model.Graph; +import it.polito.verigraph.model.Node; + + +/** + * The Class GraphCustomDeserializer is a custom deserializer for a Graph object + */ +public class GraphCustomDeserializer extends JsonDeserializer<Graph>{ + + /* (non-Javadoc) + * @see com.fasterxml.jackson.databind.JsonDeserializer#deserialize(com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.DeserializationContext) + */ + @Override + public Graph deserialize(JsonParser jp, DeserializationContext context){ + JsonNode root = null; + try { + root = jp.getCodec().readTree(jp); + } + catch (JsonProcessingException e) { + throw new InternalServerErrorException("Error parsing a graph: " + e.getMessage()); + } + catch (IOException e) { + throw new InternalServerErrorException("I/O error parsing a graph: " + e.getMessage()); + } + + JsonNode nodesJson = root.get("nodes"); + + if(nodesJson == null) + throw new BadRequestException("Invalid graph"); + + List<Node> nodeList = null; + try { + nodeList = new ObjectMapper().readValue(nodesJson.toString(), TypeFactory.defaultInstance().constructCollectionType(List.class, Node.class)); + } + catch (JsonParseException e) { + throw new BadRequestException("Invalid content for a graph: " + e.getMessage()); + } + catch (JsonMappingException e) { + throw new BadRequestException("Invalid input json structure for a graph: " + e.getMessage()); + } + catch (IOException e) { + throw new InternalServerErrorException("I/O error parsing a graph: " + e.getMessage()); + } + + Graph graph = new Graph(); + if(root.get("id") != null){ + long graphId = root.get("id").asLong(); + graph.setId(graphId); + } + Map<Long, Node> nodes = graph.getNodes(); + + long numberOfNodes = 0; + for (Node node : nodeList){ + nodes.put(++numberOfNodes, node); + } + return graph; + + } + +}
\ No newline at end of file diff --git a/verigraph/src/it/polito/verigraph/deserializer/NodeCustomDeserializer.java b/verigraph/src/it/polito/verigraph/deserializer/NodeCustomDeserializer.java new file mode 100644 index 0000000..22ec44a --- /dev/null +++ b/verigraph/src/it/polito/verigraph/deserializer/NodeCustomDeserializer.java @@ -0,0 +1,89 @@ +/******************************************************************************* + * Copyright (c) 2017 Politecnico di Torino and others. + * + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Apache License, Version 2.0 + * which accompanies this distribution, and is available at + * http://www.apache.org/licenses/LICENSE-2.0 + *******************************************************************************/ +package it.polito.verigraph.deserializer; + +import java.io.IOException; +import java.util.List; +import java.util.Map; + +import com.fasterxml.jackson.core.JsonParseException; +import com.fasterxml.jackson.core.JsonParser; +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.databind.DeserializationContext; +import com.fasterxml.jackson.databind.JsonDeserializer; +import com.fasterxml.jackson.databind.JsonMappingException; +import com.fasterxml.jackson.databind.JsonNode; +import com.fasterxml.jackson.databind.ObjectMapper; +import com.fasterxml.jackson.databind.type.TypeFactory; + +import it.polito.verigraph.exception.BadRequestException; +import it.polito.verigraph.exception.InternalServerErrorException; +import it.polito.verigraph.model.Configuration; +import it.polito.verigraph.model.Neighbour; +import it.polito.verigraph.model.Node; + +public class NodeCustomDeserializer extends JsonDeserializer<Node> { + + @Override + public Node deserialize(JsonParser jp, DeserializationContext context) { + + try { + JsonNode root = jp.getCodec().readTree(jp); + JsonNode neighboursJson = root.get("neighbours"); + JsonNode configurationJson = root.get("configuration"); + String nodeName = root.get("name").asText(); + String functionalType = root.get("functional_type").asText(); + Node node = new Node(); + + if(root.get("id") != null){ + long nodeId = root.get("id").asLong(); + node.setId(nodeId); + } + node.setName(nodeName); + node.setFunctional_type(functionalType); + + if (configurationJson == null) + node.setConfiguration(new Configuration(node.getName(), "", new ObjectMapper().createArrayNode())); + else { + Configuration conf = node.getConfiguration(); + conf.setId(node.getName()); + conf.setDescription(""); + conf.setConfiguration(configurationJson); + } + + try { + List<Neighbour> neighbourList = new ObjectMapper().readValue( neighboursJson.toString(), + TypeFactory.defaultInstance() + .constructCollectionType(List.class, + Neighbour.class)); + Map<Long, Neighbour> neighbours = node.getNeighbours(); + long numberOfNeighbours = 0; + for (Neighbour neighbour : neighbourList) { + neighbours.put(++numberOfNeighbours, neighbour); + } + + return node; + } + catch (JsonParseException e) { + throw new BadRequestException("Invalid content for a node: " + e.getMessage()); + } + catch (JsonMappingException e) { + throw new BadRequestException("Invalid input json structure for a node: " + e.getMessage()); + } + } + catch (JsonProcessingException e) { + throw new InternalServerErrorException("Error parsing a node: " + e.getMessage()); + } + catch (IOException e) { + throw new InternalServerErrorException("I/O error parsing a node: " + e.getMessage()); + } + + } + +}
\ No newline at end of file diff --git a/verigraph/src/it/polito/verigraph/deserializer/PathsMessageBodyReader.java b/verigraph/src/it/polito/verigraph/deserializer/PathsMessageBodyReader.java new file mode 100644 index 0000000..e243fee --- /dev/null +++ b/verigraph/src/it/polito/verigraph/deserializer/PathsMessageBodyReader.java @@ -0,0 +1,51 @@ +/******************************************************************************* + * Copyright (c) 2017 Politecnico di Torino and others. + * + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Apache License, Version 2.0 + * which accompanies this distribution, and is available at + * http://www.apache.org/licenses/LICENSE-2.0 + *******************************************************************************/ +package it.polito.verigraph.deserializer; + +import java.io.IOException; +import java.io.InputStream; +import java.lang.annotation.Annotation; +import java.lang.reflect.Type; +import javax.ws.rs.Consumes; +import javax.ws.rs.ProcessingException; +import javax.ws.rs.WebApplicationException; +import javax.ws.rs.core.MediaType; +import javax.ws.rs.core.MultivaluedMap; +import javax.ws.rs.ext.MessageBodyReader; +import javax.ws.rs.ext.Provider; +import javax.xml.bind.JAXBContext; +import javax.xml.bind.JAXBException; + +import it.polito.neo4j.jaxb.Paths; + +@Provider +@Consumes(MediaType.APPLICATION_XML) +public class PathsMessageBodyReader implements MessageBodyReader<Paths>{ + + @Override + public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) { + return type == Paths.class; + } + + @Override + public Paths readFrom(Class<Paths> type, Type genericType, Annotation[] annotations, MediaType mediaType, + MultivaluedMap<String, String> httpHeaders, InputStream entityStream) + throws IOException, WebApplicationException { + try { + JAXBContext jaxbContext = JAXBContext.newInstance(Paths.class); + Paths paths = (Paths) jaxbContext.createUnmarshaller() + .unmarshal(entityStream); + return paths; + } catch (JAXBException jaxbException) { + throw new ProcessingException("Error deserializing a Paths object.", + jaxbException); + } + } + +}
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